Merge https://github.com/IntellectualSites/FastAsyncWorldEdit

build.gradle.kts

@@ -7,7 +7,7 @@ import xyz.jpenilla.runpaper.task.RunServer
 
 plugins {
     id("io.github.gradle-nexus.publish-plugin") version "2.0.0"
-    id("xyz.jpenilla.run-paper") version "2.3.0"
+    id("xyz.jpenilla.run-paper") version "2.3.1"
 }
 
 if (!File("$rootDir/.git").exists()) {
@@ -34,7 +34,7 @@ logger.lifecycle("""
 *******************************************
 """)
 
-var rootVersion by extra("2.11.2")
+var rootVersion by extra("2.11.3")
 var snapshot by extra("SNAPSHOT")
 var revision: String by extra("")
 var buildNumber by extra("")
@@ -91,13 +91,13 @@ tasks {
             minecraftVersion(it)
             pluginJars(*project(":worldedit-bukkit").getTasksByName("shadowJar", false).map { (it as Jar).archiveFile }
                     .toTypedArray())
-            jvmArgs("-DPaper.IgnoreJavaVersion=true", "-Dcom.mojang.eula.agree=true")
+            jvmArgs("-DPaper.IgnoreJavaVersion=true", "-Dcom.mojang.eula.agree=true", "--add-modules=jdk.incubator.vector")
             group = "run paper"
             runDirectory.set(file("run-$it"))
         }
     }
     runServer {
-        minecraftVersion("1.20.4")
+        minecraftVersion("1.21.1")
         pluginJars(*project(":worldedit-bukkit").getTasksByName("shadowJar", false).map { (it as Jar).archiveFile }
                 .toTypedArray())
 

buildSrc/build.gradle.kts

@@ -26,9 +26,9 @@ val properties = Properties().also { props ->
 
 dependencies {
     implementation(gradleApi())
-    implementation("org.ajoberstar.grgit:grgit-gradle:5.2.2")
+    implementation("org.ajoberstar.grgit:grgit-gradle:5.3.0")
-    implementation("com.github.johnrengelman:shadow:8.1.1")
+    implementation("com.gradleup.shadow:shadow-gradle-plugin:8.3.3")
-    implementation("io.papermc.paperweight.userdev:io.papermc.paperweight.userdev.gradle.plugin:1.7.2")
+    implementation("io.papermc.paperweight.userdev:io.papermc.paperweight.userdev.gradle.plugin:1.7.3")
     constraints {
         val asmVersion = "[9.7,)"
         implementation("org.ow2.asm:asm:$asmVersion") {

buildSrc/src/main/kotlin/CommonJavaConfig.kt

@@ -28,6 +28,7 @@ fun Project.applyCommonJavaConfiguration(sourcesJar: Boolean, banSlf4j: Boolean
                 options.isDeprecation = true
                 options.encoding = "UTF-8"
                 options.compilerArgs.add("-parameters")
+                options.compilerArgs.add("--add-modules=jdk.incubator.vector")
             }
 
     configurations.all {
@@ -40,28 +41,30 @@ fun Project.applyCommonJavaConfiguration(sourcesJar: Boolean, banSlf4j: Boolean
 
     dependencies {
         "compileOnly"("com.google.code.findbugs:jsr305:3.0.2")
-        "testImplementation"("org.junit.jupiter:junit-jupiter-api:5.10.0")
+        "testImplementation"("org.junit.jupiter:junit-jupiter-api:5.11.1")
-        "testImplementation"("org.junit.jupiter:junit-jupiter-params:5.10.0")
+        "testImplementation"("org.junit.jupiter:junit-jupiter-params:5.11.1")
-        "testImplementation"("org.mockito:mockito-core:5.4.0")
+        "testImplementation"("org.mockito:mockito-core:5.14.0")
-        "testImplementation"("org.mockito:mockito-junit-jupiter:5.4.0")
+        "testImplementation"("org.mockito:mockito-junit-jupiter:5.14.0")
-        "testRuntimeOnly"("org.junit.jupiter:junit-jupiter-engine:5.10.0")
+        "testRuntimeOnly"("org.junit.jupiter:junit-jupiter-engine:5.11.1")
     }
 
     // Java 8 turns on doclint which we fail
     tasks.withType<Javadoc>().configureEach {
         (options as StandardJavadocDocletOptions).apply {
             addStringOption("Xdoclint:none", "-quiet")
+            addStringOption("-add-modules", "jdk.incubator.vector")
             tags(
                     "apiNote:a:API Note:",
                     "implSpec:a:Implementation Requirements:",
                     "implNote:a:Implementation Note:"
             )
             options.encoding = "UTF-8"
+
             links(
                     "https://jd.advntr.dev/api/latest/",
                     "https://logging.apache.org/log4j/2.x/javadoc/log4j-api/",
                     "https://www.antlr.org/api/Java/",
-                    "https://jd.papermc.io/paper/1.21/",
+                    "https://jd.papermc.io/paper/1.21.1/",
                     "https://intellectualsites.github.io/fastasyncworldedit-javadocs/worldedit-core/"
             )
             docTitle = "${rootProject.name}-${project.description}" +  " " + "${rootProject.version}"

buildSrc/src/main/kotlin/LibsConfig.kt

@@ -29,7 +29,7 @@ fun Project.applyLibrariesConfiguration() {
     applyCommonConfiguration()
     apply(plugin = "java-base")
     apply(plugin = "maven-publish")
-    apply(plugin = "com.github.johnrengelman.shadow")
+    apply(plugin = "com.gradleup.shadow")
     apply(plugin = "signing")
 
     configurations {

buildSrc/src/main/kotlin/PlatformConfig.kt

@@ -20,7 +20,7 @@ fun Project.applyPlatformAndCoreConfiguration() {
     apply(plugin = "eclipse")
     apply(plugin = "idea")
     apply(plugin = "maven-publish")
-    apply(plugin = "com.github.johnrengelman.shadow")
+    apply(plugin = "com.gradleup.shadow")
     apply(plugin = "signing")
 
     applyCommonJavaConfiguration(

gradle/libs.versions.toml

@@ -9,21 +9,21 @@ snakeyaml = "2.0"
 
 # Plugins
 dummypermscompat = "1.10"
-worldguard-bukkit = "7.0.10"
+worldguard-bukkit = "7.0.12"
 mapmanager = "1.8.0-SNAPSHOT"
 griefprevention = "17.0.0"
 griefdefender = "2.1.0-SNAPSHOT"
 residence = "4.5._13.1"
-towny = "0.100.3.12"
+towny = "0.100.4.4"
-plotsquared = "7.3.9"
+plotsquared = "7.3.11"
 
 # Third party
-bstats = "3.0.2"
+bstats = "3.1.0"
 sparsebitset = "1.3"
 parallelgzip = "1.0.5"
 adventure = "4.17.0"
 adventure-bukkit = "4.3.4"
-checkerqual = "3.46.0"
+checkerqual = "3.47.0"
 truezip = "6.8.4"
 auto-value = "1.11.0"
 findbugs = "3.0.2"
@@ -35,7 +35,7 @@ jlibnoise = "1.0.0"
 jchronic = "0.2.4a"
 lz4-java = "1.8.0"
 lz4-stream = "1.0.0"
-commons-cli = "1.8.0"
+commons-cli = "1.9.0"
 paperlib = "1.0.8"
 paster = "1.1.6"
 vault = "1.7.1"
@@ -47,7 +47,7 @@ text = "3.0.4"
 piston = "0.5.10"
 
 # Tests
-mockito = "5.12.0"
+mockito = "5.14.1"
 
 # Gradle plugins
 pluginyml = "0.6.0"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -84,7 +86,8 @@ done
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum

gradlew.bat

@@ -13,6 +13,8 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightBlockMaterial.java

@@ -1,10 +1,8 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2;
 
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.util.ReflectionUtil;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.EmptyBlockGetter;
@@ -17,6 +15,8 @@ import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.material.PushReaction;
 import org.bukkit.craftbukkit.v1_20_R2.block.data.CraftBlockData;
 
+import javax.annotation.Nullable;
+
 public class PaperweightBlockMaterial implements BlockMaterial {
 
     private final Block block;
@@ -25,7 +25,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     private final CraftBlockData craftBlockData;
     private final org.bukkit.Material craftMaterial;
     private final int opacity;
-    private final CompoundTag tile;
+    private final FaweCompoundTag tile;
 
     public PaperweightBlockMaterial(Block block) {
         this(block, block.defaultBlockState());
@@ -48,7 +48,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
         );
         tile = tileEntity == null
                 ? null
-                : new PaperweightLazyCompoundTag(Suppliers.memoize(tileEntity::saveWithId));
+                : PaperweightGetBlocks.NMS_TO_TILE.apply(tileEntity);
     }
 
     public Block getBlock() {
@@ -135,9 +135,10 @@ public class PaperweightBlockMaterial implements BlockMaterial {
         return block.isRandomlyTicking(blockState);
     }
 
+    @SuppressWarnings("deprecation")
     @Override
     public boolean isMovementBlocker() {
-        return craftMaterial.isSolid();
+        return blockState.blocksMotion();
     }
 
     @Override
@@ -172,7 +173,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     }
 
     @Override
-    public CompoundTag getDefaultTile() {
+    public @Nullable FaweCompoundTag defaultTile() {
         return tile;
     }
 

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightFaweAdapter.java

@@ -5,6 +5,7 @@ import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.packet.ChunkPacket;
@@ -97,6 +98,7 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.OptionalInt;
 import java.util.Set;
+import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -129,6 +131,12 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         this.parent = new com.sk89q.worldedit.bukkit.adapter.ext.fawe.v1_20_R2.PaperweightAdapter();
     }
 
+    public Function<BlockEntity, FaweCompoundTag> blockEntityToCompoundTag() {
+        return blockEntity -> FaweCompoundTag.of(
+                () -> (LinCompoundTag) toNativeLin(blockEntity.saveWithId())
+        );
+    }
+
     @Nullable
     private static String getEntityId(Entity entity) {
         ResourceLocation resourceLocation = net.minecraft.world.entity.EntityType.getKey(entity.getType());

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightGetBlocks.java

@@ -7,20 +7,17 @@ import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.queue.implementation.QueueHandler;
 import com.fastasyncworldedit.core.queue.implementation.blocks.CharGetBlocks;
 import com.fastasyncworldedit.core.util.MathMan;
+import com.fastasyncworldedit.core.util.NbtUtils;
 import com.fastasyncworldedit.core.util.collection.AdaptedMap;
-import com.google.common.base.Suppliers;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.jnbt.ListTag;
-import com.sk89q.jnbt.StringTag;
-import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -34,6 +31,7 @@ import net.minecraft.core.Holder;
 import net.minecraft.core.IdMap;
 import net.minecraft.core.Registry;
 import net.minecraft.core.SectionPos;
+import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.IntTag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.sounds.SoundEvents;
@@ -61,11 +59,19 @@ import org.bukkit.World;
 import org.bukkit.craftbukkit.v1_20_R2.CraftWorld;
 import org.bukkit.craftbukkit.v1_20_R2.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.enginehub.linbus.tree.LinCompoundTag;
+import org.enginehub.linbus.tree.LinDoubleTag;
+import org.enginehub.linbus.tree.LinFloatTag;
+import org.enginehub.linbus.tree.LinListTag;
+import org.enginehub.linbus.tree.LinStringTag;
+import org.enginehub.linbus.tree.LinTagType;
 
 import javax.annotation.Nonnull;
-import java.util.AbstractSet;
+import javax.annotation.Nullable;
+import java.util.AbstractCollection;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -82,7 +88,6 @@ import java.util.concurrent.locks.ReadWriteLock;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.function.Function;
-import java.util.stream.Collectors;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
@@ -91,8 +96,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPos, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
-    private static final Function<BlockEntity, CompoundTag> nmsTile2We =
+    public static final Function<BlockEntity, FaweCompoundTag> NMS_TO_TILE = ((PaperweightFaweAdapter) WorldEditPlugin
-            tileEntity -> new PaperweightLazyCompoundTag(Suppliers.memoize(tileEntity::saveWithId));
+            .getInstance()
+            .getBukkitImplAdapter()).blockEntityToCompoundTag();
     private final PaperweightFaweAdapter adapter = ((PaperweightFaweAdapter) WorldEditPlugin
             .getInstance()
             .getBukkitImplAdapter());
@@ -101,6 +107,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final ServerLevel serverLevel;
     private final int chunkX;
     private final int chunkZ;
+    private final IntPair chunkPos;
     private final int minHeight;
     private final int maxHeight;
     private final int minSectionPosition;
@@ -135,6 +142,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         this.blockLight = new DataLayer[getSectionCount()];
         this.biomeRegistry = serverLevel.registryAccess().registryOrThrow(BIOME);
         this.biomeHolderIdMap = biomeRegistry.asHolderIdMap();
+        this.chunkPos = new IntPair(chunkX, chunkZ);
     }
 
     public int getChunkX() {
@@ -256,23 +264,24 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getTile(int x, int y, int z) {
+    public FaweCompoundTag tile(final int x, final int y, final int z) {
         BlockEntity blockEntity = getChunk().getBlockEntity(new BlockPos((x & 15) + (
                 chunkX << 4), y, (z & 15) + (
                 chunkZ << 4)));
         if (blockEntity == null) {
             return null;
         }
-        return new PaperweightLazyCompoundTag(Suppliers.memoize(blockEntity::saveWithId));
+        return NMS_TO_TILE.apply(blockEntity);
+
     }
 
     @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
         Map<BlockPos, BlockEntity> nmsTiles = getChunk().getBlockEntities();
         if (nmsTiles.isEmpty()) {
             return Collections.emptyMap();
         }
-        return AdaptedMap.immutable(nmsTiles, posNms2We, nmsTile2We);
+        return AdaptedMap.immutable(nmsTiles, posNms2We, NMS_TO_TILE);
     }
 
     @Override
@@ -335,7 +344,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         Entity entity = null;
@@ -347,10 +356,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         }
         if (entity != null) {
             org.bukkit.entity.Entity bukkitEnt = entity.getBukkitEntity();
-            return BukkitAdapter.adapt(bukkitEnt).getState().getNbtData();
+            return FaweCompoundTag.of(BukkitAdapter.adapt(bukkitEnt).getState().getNbt());
         }
-        for (CompoundTag tag : getEntities()) {
+        for (FaweCompoundTag tag : entities()) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -358,14 +367,14 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         if (entities.isEmpty()) {
-            return Collections.emptySet();
+            return Collections.emptyList();
         }
         int size = entities.size();
-        return new AbstractSet<>() {
+        return new AbstractCollection<>() {
             @Override
             public int size() {
                 return size;
@@ -378,10 +387,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Override
             public boolean contains(Object get) {
-                if (!(get instanceof CompoundTag getTag)) {
+                if (!(get instanceof FaweCompoundTag getTag)) {
                     return false;
                 }
-                UUID getUUID = getTag.getUUID();
+                UUID getUUID = NbtUtils.uuid(getTag);
                 for (Entity entity : entities) {
                     UUID uuid = entity.getUUID();
                     if (uuid.equals(getUUID)) {
@@ -393,12 +402,12 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Nonnull
             @Override
-            public Iterator<CompoundTag> iterator() {
+            public Iterator<FaweCompoundTag> iterator() {
-                Iterable<CompoundTag> result = entities.stream().map(input -> {
+                Iterable<FaweCompoundTag> result = entities.stream().map(input -> {
-                    net.minecraft.nbt.CompoundTag tag = new net.minecraft.nbt.CompoundTag();
+                    CompoundTag tag = new CompoundTag();
                     input.save(tag);
-                    return (CompoundTag) adapter.toNative(tag);
+                    return FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(tag));
-                }).collect(Collectors.toList());
+                })::iterator;
                 return result.iterator();
             }
         };
@@ -419,7 +428,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             throw new IllegalStateException("Attempted to call chunk GET but chunk was not call-locked.");
         }
         forceLoadSections = false;
-        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(levelChunk) : null;
+        LevelChunk nmsChunk = ensureLoaded(serverLevel, chunkX, chunkZ);
+        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(nmsChunk) : null;
         if (createCopy) {
             if (copies.containsKey(copyKey)) {
                 throw new IllegalStateException("Copy key already used.");
@@ -427,9 +437,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             copies.put(copyKey, copy);
         }
         try {
-            ServerLevel nmsWorld = serverLevel;
-            LevelChunk nmsChunk = ensureLoaded(nmsWorld, chunkX, chunkZ);
-
             // Remove existing tiles. Create a copy so that we can remove blocks
             Map<BlockPos, BlockEntity> chunkTiles = new HashMap<>(nmsChunk.getBlockEntities());
             List<BlockEntity> beacons = null;
@@ -501,6 +508,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                             biomeData
                                     );
                                     if (PaperweightPlatformAdapter.setSectionAtomic(
+                                            serverLevel.getWorld().getName(),
+                                            chunkPos,
                                             levelChunkSections,
                                             null,
                                             newSection,
@@ -578,6 +587,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeData
                             );
                             if (PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
                                     levelChunkSections,
                                     null,
                                     newSection,
@@ -643,6 +654,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeData != null ? biomeData : (PalettedContainer<Holder<Biome>>) existingSection.getBiomes()
                             );
                             if (!PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
                                     levelChunkSections,
                                     existingSection,
                                     newSection,
@@ -716,7 +729,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         }
                         if (Settings.settings().EXPERIMENTAL.REMOVE_ENTITY_FROM_WORLD_ON_CHUNK_FAIL) {
                             for (UUID uuid : entityRemoves) {
-                                Entity entity = nmsWorld.getEntities().get(uuid);
+                                Entity entity = serverLevel.getEntities().get(uuid);
                                 if (entity != null) {
                                     removeEntity(entity);
                                 }
@@ -728,48 +741,47 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     };
                 }
 
-                Set<CompoundTag> entities = set.getEntities();
+                Collection<FaweCompoundTag> entities = set.entities();
                 if (entities != null && !entities.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[2];
                     }
 
                     syncTasks[1] = () -> {
-                        Iterator<CompoundTag> iterator = entities.iterator();
+                        Iterator<FaweCompoundTag> iterator = entities.iterator();
                         while (iterator.hasNext()) {
-                            final CompoundTag nativeTag = iterator.next();
+                            final FaweCompoundTag nativeTag = iterator.next();
-                            final Map<String, Tag<?, ?>> entityTagMap = nativeTag.getValue();
+                            final LinCompoundTag linTag = nativeTag.linTag();
-                            final StringTag idTag = (StringTag) entityTagMap.get("Id");
+                            final LinStringTag idTag = linTag.findTag("Id", LinTagType.stringTag());
-                            final ListTag posTag = (ListTag) entityTagMap.get("Pos");
+                            final LinListTag<LinDoubleTag> posTag = linTag.findListTag("Pos", LinTagType.doubleTag());
-                            final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
+                            final LinListTag<LinFloatTag> rotTag = linTag.findListTag("Rotation", LinTagType.floatTag());
                             if (idTag == null || posTag == null || rotTag == null) {
                                 LOGGER.error("Unknown entity tag: {}", nativeTag);
                                 continue;
                             }
-                            final double x = posTag.getDouble(0);
+                            final double x = posTag.get(0).valueAsDouble();
-                            final double y = posTag.getDouble(1);
+                            final double y = posTag.get(1).valueAsDouble();
-                            final double z = posTag.getDouble(2);
+                            final double z = posTag.get(2).valueAsDouble();
-                            final float yaw = rotTag.getFloat(0);
+                            final float yaw = rotTag.get(0).valueAsFloat();
-                            final float pitch = rotTag.getFloat(1);
+                            final float pitch = rotTag.get(1).valueAsFloat();
-                            final String id = idTag.getValue();
+                            final String id = idTag.value();
 
                             EntityType<?> type = EntityType.byString(id).orElse(null);
                             if (type != null) {
-                                Entity entity = type.create(nmsWorld);
+                                Entity entity = type.create(serverLevel);
                                 if (entity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final CompoundTag tag = (CompoundTag) adapter.fromNativeLin(linTag);
-                                            nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
                                     entity.load(tag);
                                     entity.absMoveTo(x, y, z, yaw, pitch);
-                                    entity.setUUID(nativeTag.getUUID());
+                                    entity.setUUID(NbtUtils.uuid(nativeTag));
-                                    if (!nmsWorld.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
+                                    if (!serverLevel.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
                                         LOGGER.warn(
                                                 "Error creating entity of type `{}` in world `{}` at location `{},{},{}`",
                                                 id,
-                                                nmsWorld.getWorld().getName(),
+                                                serverLevel.getWorld().getName(),
                                                 x,
                                                 y,
                                                 z
@@ -784,30 +796,29 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                 }
 
                 // set tiles
-                Map<BlockVector3, CompoundTag> tiles = set.getTiles();
+                Map<BlockVector3, FaweCompoundTag> tiles = set.tiles();
                 if (tiles != null && !tiles.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[1];
                     }
 
                     syncTasks[0] = () -> {
-                        for (final Map.Entry<BlockVector3, CompoundTag> entry : tiles.entrySet()) {
+                        for (final Map.Entry<BlockVector3, FaweCompoundTag> entry : tiles.entrySet()) {
-                            final CompoundTag nativeTag = entry.getValue();
+                            final FaweCompoundTag nativeTag = entry.getValue();
                             final BlockVector3 blockHash = entry.getKey();
                             final int x = blockHash.x() + bx;
                             final int y = blockHash.y();
                             final int z = blockHash.z() + bz;
                             final BlockPos pos = new BlockPos(x, y, z);
 
-                            synchronized (nmsWorld) {
+                            synchronized (serverLevel) {
-                                BlockEntity tileEntity = nmsWorld.getBlockEntity(pos);
+                                BlockEntity tileEntity = serverLevel.getBlockEntity(pos);
                                 if (tileEntity == null || tileEntity.isRemoved()) {
-                                    nmsWorld.removeBlockEntity(pos);
+                                    serverLevel.removeBlockEntity(pos);
-                                    tileEntity = nmsWorld.getBlockEntity(pos);
+                                    tileEntity = serverLevel.getBlockEntity(pos);
                                 }
                                 if (tileEntity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final CompoundTag tag = (CompoundTag) adapter.fromNativeLin(nativeTag.linTag());
-                                            nativeTag);
                                     tag.put("x", IntTag.valueOf(x));
                                     tag.put("y", IntTag.valueOf(y));
                                     tag.put("z", IntTag.valueOf(z));
@@ -823,7 +834,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     callback = null;
                 } else {
                     int finalMask = bitMask != 0 ? bitMask : lightUpdate ? set.getBitMask() : 0;
-                    boolean finalLightUpdate = lightUpdate;
                     callback = () -> {
                         // Set Modified
                         nmsChunk.setLightCorrect(true); // Set Modified
@@ -929,7 +939,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     @Override
     public void send() {
         synchronized (sendLock) {
-            PaperweightPlatformAdapter.sendChunk(this, serverLevel, chunkX, chunkZ);
+            PaperweightPlatformAdapter.sendChunk(new IntPair(chunkX, chunkZ), serverLevel, chunkX, chunkZ);
         }
     }
 

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightGetBlocks_Copy.java

@@ -1,21 +1,22 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2;
 
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBlocks;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.util.NbtUtils;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
+import net.minecraft.nbt.Tag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.level.biome.Biome;
@@ -24,9 +25,11 @@ import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.PalettedContainer;
 import net.minecraft.world.level.chunk.PalettedContainerRO;
 import org.apache.logging.log4j.Logger;
+import org.enginehub.linbus.tree.LinCompoundTag;
 
 import javax.annotation.Nullable;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -38,8 +41,8 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
 
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
-    private final Map<BlockVector3, CompoundTag> tiles = new HashMap<>();
+    private final Map<BlockVector3, FaweCompoundTag> tiles = new HashMap<>();
-    private final Set<CompoundTag> entities = new HashSet<>();
+    private final Set<FaweCompoundTag> entities = new HashSet<>();
     private final char[][] blocks;
     private final int minHeight;
     private final int maxHeight;
@@ -56,44 +59,35 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     }
 
     protected void storeTile(BlockEntity blockEntity) {
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         tiles.put(
                 BlockVector3.at(
                         blockEntity.getBlockPos().getX(),
                         blockEntity.getBlockPos().getY(),
                         blockEntity.getBlockPos().getZ()
                 ),
-                new PaperweightLazyCompoundTag(Suppliers.memoize(blockEntity::saveWithId))
+                FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(blockEntity.saveWithId()))
         );
     }
 
-    @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
-        return tiles;
-    }
-
-    @Override
-    @Nullable
-    public CompoundTag getTile(int x, int y, int z) {
-        return tiles.get(BlockVector3.at(x, y, z));
-    }
-
-    @SuppressWarnings({"unchecked", "rawtypes"})
     protected void storeEntity(Entity entity) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         net.minecraft.nbt.CompoundTag compoundTag = new net.minecraft.nbt.CompoundTag();
         entity.save(compoundTag);
-        entities.add((CompoundTag) adapter.toNative(compoundTag));
+        entities.add(FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(compoundTag)));
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         return this.entities;
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
-        for (CompoundTag tag : entities) {
+        for (FaweCompoundTag tag : entities) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -179,8 +173,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
-            for (int i = 0; i < 64; i++) {
+            if (PaperLib.isPaper()) {
-                biomes[layer][i] = palettedContainer.get(i);
+                for (int i = 0; i < 64; i++) {
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(
@@ -194,7 +198,7 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     @Override
     public BaseBlock getFullBlock(int x, int y, int z) {
         BlockState state = BlockTypesCache.states[get(x, y, z)];
-        return state.toBaseBlock(this, x, y, z);
+        return state.toBaseBlock((IBlocks) this, x, y, z);
     }
 
     @Override
@@ -224,6 +228,16 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
         return BlockTypesCache.states[get(x, y, z)];
     }
 
+    @Override
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
+        return tiles;
+    }
+
+    @Override
+    public @Nullable FaweCompoundTag tile(final int x, final int y, final int z) {
+        return tiles.get(BlockVector3.at(x, y, z));
+    }
+
     @Override
     public int getSkyLight(int x, int y, int z) {
         return 0;

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightPlatformAdapter.java

@@ -7,8 +7,8 @@ import com.fastasyncworldedit.bukkit.adapter.NMSAdapter;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.util.MathMan;
-import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.fastasyncworldedit.core.util.TaskManager;
 import com.mojang.datafixers.util.Either;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
@@ -123,6 +123,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Field LEVEL_CHUNK_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -212,6 +214,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             } catch (NoSuchFieldException ignored) {
             }
             POST_CHUNK_REWRITE = chunkRewrite;
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {
@@ -234,15 +243,14 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     static boolean setSectionAtomic(
+            String worldName,
+            IntPair pair,
             LevelChunkSection[] sections,
             LevelChunkSection expected,
             LevelChunkSection value,
             int layer
     ) {
-        if (layer >= 0 && layer < sections.length) {
+        return NMSAdapter.setSectionAtomic(worldName, pair, sections, expected, value, layer);
-            return ReflectionUtils.compareAndSet(sections, expected, value, layer);
-        }
-        return false;
     }
 
     // There is no point in having a functional semaphore for paper servers.
@@ -340,7 +348,7 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     @SuppressWarnings("deprecation")
-    public static void sendChunk(Object chunk, ServerLevel nmsWorld, int chunkX, int chunkZ) {
+    public static void sendChunk(IntPair pair, ServerLevel nmsWorld, int chunkX, int chunkZ) {
         ChunkHolder chunkHolder = getPlayerChunk(nmsWorld, chunkX, chunkZ);
         if (chunkHolder == null) {
             return;
@@ -361,26 +369,35 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
         if (levelChunk == null) {
             return;
         }
+        StampLockHolder lockHolder = new StampLockHolder();
+        NMSAdapter.beginChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
+        if (lockHolder.chunkLock == null) {
+            return;
+        }
         MinecraftServer.getServer().execute(() -> {
-            ClientboundLevelChunkWithLightPacket packet;
+            try {
-            if (PaperLib.isPaper()) {
+                ClientboundLevelChunkWithLightPacket packet;
-                packet = new ClientboundLevelChunkWithLightPacket(
+                if (PaperLib.isPaper()) {
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null,
+                            null,
-                        false // last false is to not bother with x-ray
+                            null,
-                );
+                            false // last false is to not bother with x-ray
-            } else {
+                    );
-                // deprecated on paper - deprecation suppressed
+                } else {
-                packet = new ClientboundLevelChunkWithLightPacket(
+                    // deprecated on paper - deprecation suppressed
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null
+                            null,
-                );
+                            null
+                    );
+                }
+                nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
+            } finally {
+                NMSAdapter.endChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
             }
-            nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
         });
     }
 

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightStarlightRelighter.java

@@ -2,6 +2,7 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2;
 
 import com.fastasyncworldedit.bukkit.adapter.StarlightRelighter;
 import com.fastasyncworldedit.core.configuration.Settings;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.queue.IQueueExtent;
 import net.minecraft.server.level.ChunkMap;
 import net.minecraft.server.level.ServerLevel;
@@ -67,7 +68,7 @@ public class PaperweightStarlightRelighter extends StarlightRelighter<ServerLeve
             int x = pos.x;
             int z = pos.z;
             if (delay) { // we still need to send the block changes of that chunk
-                PaperweightPlatformAdapter.sendChunk(pos, serverLevel, x, z);
+                PaperweightPlatformAdapter.sendChunk(new IntPair(x, z), serverLevel, x, z);
             }
             serverLevel.getChunkSource().removeTicketAtLevel(FAWE_TICKET, pos, LIGHT_LEVEL, Unit.INSTANCE);
         }

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/regen/PaperweightRegen.java

@@ -4,167 +4,74 @@ import com.fastasyncworldedit.bukkit.adapter.Regenerator;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.queue.IChunkCache;
 import com.fastasyncworldedit.core.queue.IChunkGet;
-import com.fastasyncworldedit.core.util.ReflectionUtils;
+import com.fastasyncworldedit.core.queue.implementation.chunk.ChunkCache;
-import com.fastasyncworldedit.core.util.TaskManager;
 import com.google.common.collect.ImmutableList;
-import com.mojang.datafixers.util.Either;
 import com.mojang.serialization.Lifecycle;
+import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2.PaperweightGetBlocks;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.io.file.SafeFiles;
 import com.sk89q.worldedit.world.RegenOptions;
-import it.unimi.dsi.fastutil.objects.Object2ObjectArrayMap;
 import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.dedicated.DedicatedServer;
-import net.minecraft.server.level.ChunkMap;
-import net.minecraft.server.level.ChunkTaskPriorityQueueSorter.Message;
-import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ThreadedLevelLightEngine;
 import net.minecraft.server.level.progress.ChunkProgressListener;
-import net.minecraft.util.thread.ProcessorHandle;
+import net.minecraft.util.ProgressListener;
-import net.minecraft.util.thread.ProcessorMailbox;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.LevelHeightAccessor;
 import net.minecraft.world.level.LevelSettings;
 import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.FixedBiomeSource;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
 import net.minecraft.world.level.chunk.ChunkStatus;
-import net.minecraft.world.level.chunk.LevelChunk;
-import net.minecraft.world.level.chunk.ProtoChunk;
-import net.minecraft.world.level.chunk.UpgradeData;
 import net.minecraft.world.level.dimension.LevelStem;
-import net.minecraft.world.level.levelgen.FlatLevelSource;
 import net.minecraft.world.level.levelgen.NoiseBasedChunkGenerator;
-import net.minecraft.world.level.levelgen.NoiseGeneratorSettings;
 import net.minecraft.world.level.levelgen.WorldOptions;
-import net.minecraft.world.level.levelgen.blending.BlendingData;
-import net.minecraft.world.level.levelgen.flat.FlatLevelGeneratorSettings;
-import net.minecraft.world.level.levelgen.structure.placement.ConcentricRingsStructurePlacement;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
 import net.minecraft.world.level.storage.LevelStorageSource;
 import net.minecraft.world.level.storage.PrimaryLevelData;
-import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
-import org.bukkit.Chunk;
+import org.bukkit.World;
 import org.bukkit.craftbukkit.v1_20_R2.CraftServer;
 import org.bukkit.craftbukkit.v1_20_R2.CraftWorld;
-import org.bukkit.craftbukkit.v1_20_R2.generator.CustomChunkGenerator;
 import org.bukkit.generator.BiomeProvider;
-import org.bukkit.generator.BlockPopulator;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
-import javax.annotation.Nullable;
 import java.lang.reflect.Field;
 import java.nio.file.Path;
-import java.util.Collections;
-import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.OptionalLong;
-import java.util.Random;
-import java.util.concurrent.CompletableFuture;
 import java.util.function.BooleanSupplier;
 import java.util.function.Supplier;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
-public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, LevelChunk, PaperweightRegen.ChunkStatusWrap> {
+public class PaperweightRegen extends Regenerator {
-
-    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Field serverWorldsField;
     private static final Field paperConfigField;
-    private static final Field flatBedrockField;
-    private static final Field generatorSettingFlatField;
     private static final Field generatorSettingBaseSupplierField;
-    private static final Field delegateField;
-    private static final Field chunkSourceField;
-    private static final Field generatorStructureStateField;
-    private static final Field ringPositionsField;
-    private static final Field hasGeneratedPositionsField;
 
-    //list of chunk stati in correct order without FULL
-    private static final Map<ChunkStatus, Concurrency> chunkStati = new LinkedHashMap<>();
 
     static {
-        chunkStati.put(ChunkStatus.EMPTY, Concurrency.FULL);   // empty: radius -1, does nothing
-        chunkStati.put(ChunkStatus.STRUCTURE_STARTS, Concurrency.NONE);   // structure starts: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.STRUCTURE_REFERENCES,
-                Concurrency.FULL
-        );   // structure refs: radius 8, but only writes to current chunk
-        chunkStati.put(ChunkStatus.BIOMES, Concurrency.FULL);   // biomes: radius 0
-        chunkStati.put(ChunkStatus.NOISE, Concurrency.RADIUS); // noise: radius 8
-        chunkStati.put(ChunkStatus.SURFACE, Concurrency.NONE);   // surface: radius 0, requires NONE
-        chunkStati.put(ChunkStatus.CARVERS, Concurrency.NONE);   // carvers: radius 0, but RADIUS and FULL change results
-        /*chunkStati.put(
-                ChunkStatus.LIQUID_CARVERS,
-                Concurrency.NONE
-        );   // liquid carvers: radius 0, but RADIUS and FULL change results*/
-        chunkStati.put(ChunkStatus.FEATURES, Concurrency.NONE);   // features: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.LIGHT,
-                Concurrency.FULL
-        );   // light: radius 1, but no writes to other chunks, only current chunk
-        chunkStati.put(ChunkStatus.SPAWN, Concurrency.FULL);   // spawn: radius 0
-        // chunkStati.put(ChunkStatus.HEIGHTMAPS, Concurrency.FULL);   // heightmaps: radius 0
-
         try {
             serverWorldsField = CraftServer.class.getDeclaredField("worlds");
             serverWorldsField.setAccessible(true);
 
             Field tmpPaperConfigField;
-            Field tmpFlatBedrockField;
             try { //only present on paper
                 tmpPaperConfigField = Level.class.getDeclaredField("paperConfig");
                 tmpPaperConfigField.setAccessible(true);
-
-                tmpFlatBedrockField = tmpPaperConfigField.getType().getDeclaredField("generateFlatBedrock");
-                tmpFlatBedrockField.setAccessible(true);
             } catch (Exception e) {
                 tmpPaperConfigField = null;
-                tmpFlatBedrockField = null;
             }
             paperConfigField = tmpPaperConfigField;
-            flatBedrockField = tmpFlatBedrockField;
 
             generatorSettingBaseSupplierField = NoiseBasedChunkGenerator.class.getDeclaredField(Refraction.pickName(
                     "settings", "e"));
             generatorSettingBaseSupplierField.setAccessible(true);
-
-            generatorSettingFlatField = FlatLevelSource.class.getDeclaredField(Refraction.pickName("settings", "d"));
-            generatorSettingFlatField.setAccessible(true);
-
-            delegateField = CustomChunkGenerator.class.getDeclaredField("delegate");
-            delegateField.setAccessible(true);
-
-            chunkSourceField = ServerLevel.class.getDeclaredField(Refraction.pickName("chunkSource", "I"));
-            chunkSourceField.setAccessible(true);
-
-            generatorStructureStateField = ChunkMap.class.getDeclaredField(Refraction.pickName("chunkGeneratorState", "v"));
-            generatorStructureStateField.setAccessible(true);
-
-            ringPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(Refraction.pickName("ringPositions", "g"));
-            ringPositionsField.setAccessible(true);
-
-            hasGeneratedPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(
-                    Refraction.pickName("hasGeneratedPositions", "h")
-            );
-            hasGeneratedPositionsField.setAccessible(true);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -172,43 +79,37 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     //runtime
     private ServerLevel originalServerWorld;
-    private ServerChunkCache originalChunkProvider;
     private ServerLevel freshWorld;
-    private ServerChunkCache freshChunkProvider;
     private LevelStorageSource.LevelStorageAccess session;
-    private StructureTemplateManager structureTemplateManager;
-    private ThreadedLevelLightEngine threadedLevelLightEngine;
-    private ChunkGenerator chunkGenerator;
 
     private Path tempDir;
 
-    private boolean generateFlatBedrock = false;
+    public PaperweightRegen(
-
+            World originalBukkitWorld,
-    public PaperweightRegen(org.bukkit.World originalBukkitWorld, Region region, Extent target, RegenOptions options) {
+            Region region,
+            Extent target,
+            RegenOptions options
+    ) {
         super(originalBukkitWorld, region, target, options);
     }
 
+    @Override
+    protected void runTasks(final BooleanSupplier shouldKeepTicking) {
+        while (shouldKeepTicking.getAsBoolean()) {
+            if (!this.freshWorld.getChunkSource().pollTask()) {
+                return;
+            }
+        }
+    }
+
     @Override
     protected boolean prepare() {
         this.originalServerWorld = ((CraftWorld) originalBukkitWorld).getHandle();
-        originalChunkProvider = originalServerWorld.getChunkSource();
-
-        //flat bedrock? (only on paper)
-        if (paperConfigField != null) {
-            try {
-                generateFlatBedrock = flatBedrockField.getBoolean(paperConfigField.get(originalServerWorld));
-            } catch (Exception ignored) {
-            }
-        }
-
         seed = options.getSeed().orElse(originalServerWorld.getSeed());
-        chunkStati.forEach((s, c) -> super.chunkStatuses.put(new ChunkStatusWrap(s), c));
-
         return true;
     }
 
     @Override
-    @SuppressWarnings("unchecked")
     protected boolean initNewWorld() throws Exception {
         //world folder
         tempDir = java.nio.file.Files.createTempDirectory("FastAsyncWorldEditWorldGen");
@@ -254,8 +155,10 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                 session,
                 newWorldData,
                 originalServerWorld.dimension(),
-                DedicatedServer.getServer().registryAccess().registry(Registries.LEVEL_STEM).orElseThrow()
+                new LevelStem(
-                        .getOrThrow(levelStemResourceKey),
+                        originalServerWorld.dimensionTypeRegistration(),
+                        originalServerWorld.getChunkSource().getGenerator()
+                ),
                 new RegenNoOpWorldLoadListener(),
                 originalServerWorld.isDebug(),
                 seed,
@@ -273,17 +176,30 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                     ) : null;
 
             @Override
-            public void tick(BooleanSupplier shouldKeepTicking) { //no ticking
+            public @NotNull Holder<Biome> getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
-            }
-
-            @Override
-            public Holder<Biome> getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
                 if (options.hasBiomeType()) {
                     return singleBiome;
                 }
-                return PaperweightRegen.this.chunkGenerator.getBiomeSource().getNoiseBiome(
+                return super.getUncachedNoiseBiome(biomeX, biomeY, biomeZ);
-                        biomeX, biomeY, biomeZ, getChunkSource().randomState().sampler()
+            }
-                );
+
+            @Override
+            public void save(
+                    @org.jetbrains.annotations.Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled
+            ) {
+                // noop, spigot
+            }
+
+            @Override
+            public void save(
+                    @Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled,
+                    final boolean close
+            ) {
+                // noop, paper
             }
         }).get();
         freshWorld.noSave = true;
@@ -292,89 +208,6 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         if (paperConfigField != null) {
             paperConfigField.set(freshWorld, originalServerWorld.paperConfig());
         }
-
-        ChunkGenerator originalGenerator = originalChunkProvider.getGenerator();
-        if (originalGenerator instanceof FlatLevelSource flatLevelSource) {
-            FlatLevelGeneratorSettings generatorSettingFlat = flatLevelSource.settings();
-            chunkGenerator = new FlatLevelSource(generatorSettingFlat);
-        } else if (originalGenerator instanceof NoiseBasedChunkGenerator noiseBasedChunkGenerator) {
-            Holder<NoiseGeneratorSettings> generatorSettingBaseSupplier = (Holder<NoiseGeneratorSettings>) generatorSettingBaseSupplierField.get(
-                    originalGenerator);
-            BiomeSource biomeSource;
-            if (options.hasBiomeType()) {
-
-                biomeSource = new FixedBiomeSource(
-                        DedicatedServer.getServer().registryAccess()
-                                .registryOrThrow(BIOME).asHolderIdMap().byIdOrThrow(
-                                        WorldEditPlugin.getInstance().getBukkitImplAdapter().getInternalBiomeId(options.getBiomeType())
-                                )
-                );
-            } else {
-                biomeSource = originalGenerator.getBiomeSource();
-            }
-            chunkGenerator = new NoiseBasedChunkGenerator(
-                    biomeSource,
-                    generatorSettingBaseSupplier
-            );
-        } else if (originalGenerator instanceof CustomChunkGenerator customChunkGenerator) {
-            chunkGenerator = customChunkGenerator.getDelegate();
-        } else {
-            LOGGER.error("Unsupported generator type {}", originalGenerator.getClass().getName());
-            return false;
-        }
-        if (generator != null) {
-            chunkGenerator = new CustomChunkGenerator(freshWorld, chunkGenerator, generator);
-            generateConcurrent = generator.isParallelCapable();
-        }
-//        chunkGenerator.conf = freshWorld.spigotConfig; - Does not exist anymore, may need to be re-addressed
-
-        freshChunkProvider = new ServerChunkCache(
-                freshWorld,
-                session,
-                server.getFixerUpper(),
-                server.getStructureManager(),
-                server.executor,
-                chunkGenerator,
-                freshWorld.spigotConfig.viewDistance,
-                freshWorld.spigotConfig.simulationDistance,
-                server.forceSynchronousWrites(),
-                new RegenNoOpWorldLoadListener(),
-                (chunkCoordIntPair, state) -> {
-                },
-                () -> server.overworld().getDataStorage()
-        ) {
-            // redirect to LevelChunks created in #createChunks
-            @Override
-            public ChunkAccess getChunk(int x, int z, ChunkStatus chunkstatus, boolean create) {
-                ChunkAccess chunkAccess = getChunkAt(x, z);
-                if (chunkAccess == null && create) {
-                    chunkAccess = createChunk(getProtoChunkAt(x, z));
-                }
-                return chunkAccess;
-            }
-        };
-
-        if (seed == originalOpts.seed() && !options.hasBiomeType()) {
-            // Optimisation for needless ring position calculation when the seed and biome is the same.
-            ChunkGeneratorStructureState state = (ChunkGeneratorStructureState) generatorStructureStateField.get(originalChunkProvider.chunkMap);
-            boolean hasGeneratedPositions = hasGeneratedPositionsField.getBoolean(state);
-            if (hasGeneratedPositions) {
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> origPositions =
-                        (Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>>) ringPositionsField.get(state);
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> copy = new Object2ObjectArrayMap<>(
-                        origPositions);
-                ChunkGeneratorStructureState newState = (ChunkGeneratorStructureState) generatorStructureStateField.get(freshChunkProvider.chunkMap);
-                ringPositionsField.set(newState, copy);
-                hasGeneratedPositionsField.setBoolean(newState, true);
-            }
-        }
-
-
-        chunkSourceField.set(freshWorld, freshChunkProvider);
-        //let's start then
-        structureTemplateManager = server.getStructureManager();
-        threadedLevelLightEngine = new NoOpLightEngine(freshChunkProvider);
-
         return true;
     }
 
@@ -389,7 +222,8 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         try {
             Fawe.instance().getQueueHandler().sync(() -> {
                 try {
-                    freshChunkProvider.close(false);
+                    freshWorld.getChunkSource().getDataStorage().cache.clear();
+                    freshWorld.getChunkSource().close(false);
                 } catch (Exception e) {
                     throw new RuntimeException(e);
                 }
@@ -410,63 +244,20 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         }
     }
 
-    @Override
-    protected ProtoChunk createProtoChunk(int x, int z) {
-        return new FastProtoChunk(new ChunkPos(x, z), UpgradeData.EMPTY, freshWorld,
-                this.freshWorld.registryAccess().registryOrThrow(BIOME), null
-        );
-    }
-
-    @Override
-    protected LevelChunk createChunk(ProtoChunk protoChunk) {
-        return new LevelChunk(
-                freshWorld,
-                protoChunk,
-                null // we don't want to add entities
-        );
-    }
-
-    @Override
-    protected ChunkStatusWrap getFullChunkStatus() {
-        return new ChunkStatusWrap(ChunkStatus.FULL);
-    }
-
-    @Override
-    protected List<BlockPopulator> getBlockPopulators() {
-        return originalServerWorld.getWorld().getPopulators();
-    }
-
-    @Override
-    protected void populate(LevelChunk levelChunk, Random random, BlockPopulator blockPopulator) {
-        // BlockPopulator#populate has to be called synchronously for TileEntity access
-        TaskManager.taskManager().task(() -> {
-            final CraftWorld world = freshWorld.getWorld();
-            final Chunk chunk = world.getChunkAt(levelChunk.locX, levelChunk.locZ);
-            blockPopulator.populate(world, random, chunk);
-        });
-    }
-
     @Override
     protected IChunkCache<IChunkGet> initSourceQueueCache() {
-        return (chunkX, chunkZ) -> new PaperweightGetBlocks(freshWorld, chunkX, chunkZ) {
+        return new ChunkCache<>(BukkitAdapter.adapt(freshWorld.getWorld()));
-            @Override
-            public LevelChunk ensureLoaded(ServerLevel nmsWorld, int x, int z) {
-                return getChunkAt(x, z);
-            }
-        };
     }
 
     //util
     @SuppressWarnings("unchecked")
     private void removeWorldFromWorldsMap() {
-        Fawe.instance().getQueueHandler().sync(() -> {
+        try {
-            try {
+            Map<String, org.bukkit.World> map = (Map<String, org.bukkit.World>) serverWorldsField.get(Bukkit.getServer());
-                Map<String, org.bukkit.World> map = (Map<String, org.bukkit.World>) serverWorldsField.get(Bukkit.getServer());
+            map.remove("faweregentempworld");
-                map.remove("faweregentempworld");
+        } catch (IllegalAccessException e) {
-            } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
-                throw new RuntimeException(e);
+        }
-            }
-        });
     }
 
     private ResourceKey<LevelStem> getWorldDimKey(org.bukkit.World.Environment env) {
@@ -483,11 +274,15 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         }
 
         @Override
-        public void updateSpawnPos(ChunkPos spawnPos) {
+        public void updateSpawnPos(@NotNull ChunkPos spawnPos) {
         }
 
         @Override
-        public void onStatusChange(ChunkPos pos, @Nullable ChunkStatus status) {
+        public void onStatusChange(
+                final @NotNull ChunkPos pos,
+                @org.jetbrains.annotations.Nullable final ChunkStatus status
+        ) {
+
         }
 
         @Override
@@ -505,87 +300,4 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     }
 
-    private class FastProtoChunk extends ProtoChunk {
-
-        public FastProtoChunk(
-                final ChunkPos pos,
-                final UpgradeData upgradeData,
-                final LevelHeightAccessor world,
-                final Registry<Biome> biomeRegistry,
-                @Nullable final BlendingData blendingData
-        ) {
-            super(pos, upgradeData, world, biomeRegistry, blendingData);
-        }
-
-        // avoid warning on paper
-
-        // compatibility with spigot
-
-        public boolean generateFlatBedrock() {
-            return generateFlatBedrock;
-        }
-
-        // no one will ever see the entities!
-        @Override
-        public List<CompoundTag> getEntities() {
-            return Collections.emptyList();
-        }
-
-    }
-
-    protected class ChunkStatusWrap extends ChunkStatusWrapper<ChunkAccess> {
-
-        private final ChunkStatus chunkStatus;
-
-        public ChunkStatusWrap(ChunkStatus chunkStatus) {
-            this.chunkStatus = chunkStatus;
-        }
-
-        @Override
-        public int requiredNeighborChunkRadius() {
-            return chunkStatus.getRange();
-        }
-
-        @Override
-        public String name() {
-            return chunkStatus.toString();
-        }
-
-        @Override
-        public CompletableFuture<?> processChunk(List<ChunkAccess> accessibleChunks) {
-            return chunkStatus.generate(
-                    Runnable::run, // TODO revisit, we might profit from this somehow?
-                    freshWorld,
-                    chunkGenerator,
-                    structureTemplateManager,
-                    threadedLevelLightEngine,
-                    c -> CompletableFuture.completedFuture(Either.left(c)),
-                    accessibleChunks
-            );
-        }
-
-    }
-
-    /**
-     * A light engine that does nothing. As light is calculated after pasting anyway, we can avoid
-     * work this way.
-     */
-    static class NoOpLightEngine extends ThreadedLevelLightEngine {
-
-        private static final ProcessorMailbox<Runnable> MAILBOX = ProcessorMailbox.create(task -> {
-        }, "fawe-no-op");
-        private static final ProcessorHandle<Message<Runnable>> HANDLE = ProcessorHandle.of("fawe-no-op", m -> {
-        });
-
-        public NoOpLightEngine(final ServerChunkCache chunkProvider) {
-            super(chunkProvider, chunkProvider.chunkMap, false, MAILBOX, HANDLE);
-        }
-
-        @Override
-        public CompletableFuture<ChunkAccess> lightChunk(final ChunkAccess chunk, final boolean excludeBlocks) {
-            return CompletableFuture.completedFuture(chunk);
-        }
-
-    }
-
 }

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightBlockMaterial.java

@@ -1,8 +1,6 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3;
 
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.EmptyBlockGetter;
@@ -14,6 +12,8 @@ import net.minecraft.world.level.material.Fluids;
 import net.minecraft.world.level.material.PushReaction;
 import org.bukkit.craftbukkit.v1_20_R3.block.data.CraftBlockData;
 
+import javax.annotation.Nullable;
+
 public class PaperweightBlockMaterial implements BlockMaterial {
 
     private final Block block;
@@ -21,7 +21,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     private final CraftBlockData craftBlockData;
     private final org.bukkit.Material craftMaterial;
     private final int opacity;
-    private final CompoundTag tile;
+    private final FaweCompoundTag tile;
 
     public PaperweightBlockMaterial(Block block) {
         this(block, block.defaultBlockState());
@@ -39,7 +39,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
         );
         tile = tileEntity == null
                 ? null
-                : new PaperweightLazyCompoundTag(Suppliers.memoize(tileEntity::saveWithId));
+                : PaperweightGetBlocks.NMS_TO_TILE.apply(tileEntity);
     }
 
     public Block getBlock() {
@@ -125,9 +125,10 @@ public class PaperweightBlockMaterial implements BlockMaterial {
         return block.isRandomlyTicking(blockState);
     }
 
+    @SuppressWarnings("deprecation")
     @Override
     public boolean isMovementBlocker() {
-        return craftMaterial.isSolid();
+        return blockState.blocksMotion();
     }
 
     @Override
@@ -162,7 +163,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     }
 
     @Override
-    public CompoundTag getDefaultTile() {
+    public @Nullable FaweCompoundTag defaultTile() {
         return tile;
     }
 

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightFaweAdapter.java

@@ -5,6 +5,7 @@ import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.packet.ChunkPacket;
@@ -97,6 +98,7 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.OptionalInt;
 import java.util.Set;
+import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -129,6 +131,12 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         this.parent = new com.sk89q.worldedit.bukkit.adapter.ext.fawe.v1_20_R3.PaperweightAdapter();
     }
 
+    public Function<BlockEntity, FaweCompoundTag> blockEntityToCompoundTag() {
+        return blockEntity -> FaweCompoundTag.of(
+                () -> (LinCompoundTag) toNativeLin(blockEntity.saveWithId())
+        );
+    }
+
     @Nullable
     private static String getEntityId(Entity entity) {
         ResourceLocation resourceLocation = net.minecraft.world.entity.EntityType.getKey(entity.getType());

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightGetBlocks.java

@@ -7,20 +7,17 @@ import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.queue.implementation.QueueHandler;
 import com.fastasyncworldedit.core.queue.implementation.blocks.CharGetBlocks;
 import com.fastasyncworldedit.core.util.MathMan;
+import com.fastasyncworldedit.core.util.NbtUtils;
 import com.fastasyncworldedit.core.util.collection.AdaptedMap;
-import com.google.common.base.Suppliers;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.jnbt.ListTag;
-import com.sk89q.jnbt.StringTag;
-import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -34,6 +31,7 @@ import net.minecraft.core.Holder;
 import net.minecraft.core.IdMap;
 import net.minecraft.core.Registry;
 import net.minecraft.core.SectionPos;
+import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.IntTag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.sounds.SoundEvents;
@@ -61,11 +59,19 @@ import org.bukkit.World;
 import org.bukkit.craftbukkit.v1_20_R3.CraftWorld;
 import org.bukkit.craftbukkit.v1_20_R3.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.enginehub.linbus.tree.LinCompoundTag;
+import org.enginehub.linbus.tree.LinDoubleTag;
+import org.enginehub.linbus.tree.LinFloatTag;
+import org.enginehub.linbus.tree.LinListTag;
+import org.enginehub.linbus.tree.LinStringTag;
+import org.enginehub.linbus.tree.LinTagType;
 
 import javax.annotation.Nonnull;
-import java.util.AbstractSet;
+import javax.annotation.Nullable;
+import java.util.AbstractCollection;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -82,7 +88,6 @@ import java.util.concurrent.locks.ReadWriteLock;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.function.Function;
-import java.util.stream.Collectors;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
@@ -91,8 +96,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPos, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
-    private static final Function<BlockEntity, CompoundTag> nmsTile2We =
+    public static final Function<BlockEntity, FaweCompoundTag> NMS_TO_TILE = ((PaperweightFaweAdapter) WorldEditPlugin
-            tileEntity -> new PaperweightLazyCompoundTag(Suppliers.memoize(tileEntity::saveWithId));
+            .getInstance()
+            .getBukkitImplAdapter()).blockEntityToCompoundTag();
     private final PaperweightFaweAdapter adapter = ((PaperweightFaweAdapter) WorldEditPlugin
             .getInstance()
             .getBukkitImplAdapter());
@@ -101,6 +107,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final ServerLevel serverLevel;
     private final int chunkX;
     private final int chunkZ;
+    private final IntPair chunkPos;
     private final int minHeight;
     private final int maxHeight;
     private final int minSectionPosition;
@@ -108,6 +115,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final Registry<Biome> biomeRegistry;
     private final IdMap<Holder<Biome>> biomeHolderIdMap;
     private final ConcurrentHashMap<Integer, PaperweightGetBlocks_Copy> copies = new ConcurrentHashMap<>();
+    private final Object sendLock = new Object();
     private LevelChunkSection[] sections;
     private LevelChunk levelChunk;
     private DataLayer[] blockLight;
@@ -134,6 +142,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         this.blockLight = new DataLayer[getSectionCount()];
         this.biomeRegistry = serverLevel.registryAccess().registryOrThrow(BIOME);
         this.biomeHolderIdMap = biomeRegistry.asHolderIdMap();
+        this.chunkPos = new IntPair(chunkX, chunkZ);
     }
 
     public int getChunkX() {
@@ -255,23 +264,24 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getTile(int x, int y, int z) {
+    public FaweCompoundTag tile(final int x, final int y, final int z) {
         BlockEntity blockEntity = getChunk().getBlockEntity(new BlockPos((x & 15) + (
                 chunkX << 4), y, (z & 15) + (
                 chunkZ << 4)));
         if (blockEntity == null) {
             return null;
         }
-        return new PaperweightLazyCompoundTag(Suppliers.memoize(blockEntity::saveWithId));
+        return NMS_TO_TILE.apply(blockEntity);
+
     }
 
     @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
         Map<BlockPos, BlockEntity> nmsTiles = getChunk().getBlockEntities();
         if (nmsTiles.isEmpty()) {
             return Collections.emptyMap();
         }
-        return AdaptedMap.immutable(nmsTiles, posNms2We, nmsTile2We);
+        return AdaptedMap.immutable(nmsTiles, posNms2We, NMS_TO_TILE);
     }
 
     @Override
@@ -334,7 +344,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         Entity entity = null;
@@ -346,10 +356,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         }
         if (entity != null) {
             org.bukkit.entity.Entity bukkitEnt = entity.getBukkitEntity();
-            return BukkitAdapter.adapt(bukkitEnt).getState().getNbtData();
+            return FaweCompoundTag.of(BukkitAdapter.adapt(bukkitEnt).getState().getNbt());
         }
-        for (CompoundTag tag : getEntities()) {
+        for (FaweCompoundTag tag : entities()) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -357,14 +367,14 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         if (entities.isEmpty()) {
-            return Collections.emptySet();
+            return Collections.emptyList();
         }
         int size = entities.size();
-        return new AbstractSet<>() {
+        return new AbstractCollection<>() {
             @Override
             public int size() {
                 return size;
@@ -377,10 +387,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Override
             public boolean contains(Object get) {
-                if (!(get instanceof CompoundTag getTag)) {
+                if (!(get instanceof FaweCompoundTag getTag)) {
                     return false;
                 }
-                UUID getUUID = getTag.getUUID();
+                UUID getUUID = NbtUtils.uuid(getTag);
                 for (Entity entity : entities) {
                     UUID uuid = entity.getUUID();
                     if (uuid.equals(getUUID)) {
@@ -392,12 +402,12 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Nonnull
             @Override
-            public Iterator<CompoundTag> iterator() {
+            public Iterator<FaweCompoundTag> iterator() {
-                Iterable<CompoundTag> result = entities.stream().map(input -> {
+                Iterable<FaweCompoundTag> result = entities.stream().map(input -> {
                     net.minecraft.nbt.CompoundTag tag = new net.minecraft.nbt.CompoundTag();
                     input.save(tag);
-                    return (CompoundTag) adapter.toNative(tag);
+                    return FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(tag));
-                }).collect(Collectors.toList());
+                })::iterator;
                 return result.iterator();
             }
         };
@@ -418,7 +428,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             throw new IllegalStateException("Attempted to call chunk GET but chunk was not call-locked.");
         }
         forceLoadSections = false;
-        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(levelChunk) : null;
+        LevelChunk nmsChunk = ensureLoaded(serverLevel, chunkX, chunkZ);
+        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(nmsChunk) : null;
         if (createCopy) {
             if (copies.containsKey(copyKey)) {
                 throw new IllegalStateException("Copy key already used.");
@@ -426,9 +437,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             copies.put(copyKey, copy);
         }
         try {
-            ServerLevel nmsWorld = serverLevel;
-            LevelChunk nmsChunk = ensureLoaded(nmsWorld, chunkX, chunkZ);
-
             // Remove existing tiles. Create a copy so that we can remove blocks
             Map<BlockPos, BlockEntity> chunkTiles = new HashMap<>(nmsChunk.getBlockEntities());
             List<BlockEntity> beacons = null;
@@ -500,6 +508,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                             biomeData
                                     );
                                     if (PaperweightPlatformAdapter.setSectionAtomic(
+                                            serverLevel.getWorld().getName(),
+                                            chunkPos,
                                             levelChunkSections,
                                             null,
                                             newSection,
@@ -577,6 +587,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeData
                             );
                             if (PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
                                     levelChunkSections,
                                     null,
                                     newSection,
@@ -642,6 +654,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeData != null ? biomeData : (PalettedContainer<Holder<Biome>>) existingSection.getBiomes()
                             );
                             if (!PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
                                     levelChunkSections,
                                     existingSection,
                                     newSection,
@@ -715,7 +729,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         }
                         if (Settings.settings().EXPERIMENTAL.REMOVE_ENTITY_FROM_WORLD_ON_CHUNK_FAIL) {
                             for (UUID uuid : entityRemoves) {
-                                Entity entity = nmsWorld.getEntities().get(uuid);
+                                Entity entity = serverLevel.getEntities().get(uuid);
                                 if (entity != null) {
                                     removeEntity(entity);
                                 }
@@ -727,48 +741,47 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     };
                 }
 
-                Set<CompoundTag> entities = set.getEntities();
+                Collection<FaweCompoundTag> entities = set.entities();
                 if (entities != null && !entities.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[2];
                     }
 
                     syncTasks[1] = () -> {
-                        Iterator<CompoundTag> iterator = entities.iterator();
+                        Iterator<FaweCompoundTag> iterator = entities.iterator();
                         while (iterator.hasNext()) {
-                            final CompoundTag nativeTag = iterator.next();
+                            final FaweCompoundTag nativeTag = iterator.next();
-                            final Map<String, Tag<?, ?>> entityTagMap = nativeTag.getValue();
+                            final LinCompoundTag linTag = nativeTag.linTag();
-                            final StringTag idTag = (StringTag) entityTagMap.get("Id");
+                            final LinStringTag idTag = linTag.findTag("Id", LinTagType.stringTag());
-                            final ListTag posTag = (ListTag) entityTagMap.get("Pos");
+                            final LinListTag<LinDoubleTag> posTag = linTag.findListTag("Pos", LinTagType.doubleTag());
-                            final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
+                            final LinListTag<LinFloatTag> rotTag = linTag.findListTag("Rotation", LinTagType.floatTag());
                             if (idTag == null || posTag == null || rotTag == null) {
                                 LOGGER.error("Unknown entity tag: {}", nativeTag);
                                 continue;
                             }
-                            final double x = posTag.getDouble(0);
+                            final double x = posTag.get(0).valueAsDouble();
-                            final double y = posTag.getDouble(1);
+                            final double y = posTag.get(1).valueAsDouble();
-                            final double z = posTag.getDouble(2);
+                            final double z = posTag.get(2).valueAsDouble();
-                            final float yaw = rotTag.getFloat(0);
+                            final float yaw = rotTag.get(0).valueAsFloat();
-                            final float pitch = rotTag.getFloat(1);
+                            final float pitch = rotTag.get(1).valueAsFloat();
-                            final String id = idTag.getValue();
+                            final String id = idTag.value();
 
                             EntityType<?> type = EntityType.byString(id).orElse(null);
                             if (type != null) {
-                                Entity entity = type.create(nmsWorld);
+                                Entity entity = type.create(serverLevel);
                                 if (entity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNativeLin(linTag);
-                                            nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
                                     entity.load(tag);
                                     entity.absMoveTo(x, y, z, yaw, pitch);
-                                    entity.setUUID(nativeTag.getUUID());
+                                    entity.setUUID(NbtUtils.uuid(nativeTag));
-                                    if (!nmsWorld.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
+                                    if (!serverLevel.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
                                         LOGGER.warn(
                                                 "Error creating entity of type `{}` in world `{}` at location `{},{},{}`",
                                                 id,
-                                                nmsWorld.getWorld().getName(),
+                                                serverLevel.getWorld().getName(),
                                                 x,
                                                 y,
                                                 z
@@ -783,30 +796,29 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                 }
 
                 // set tiles
-                Map<BlockVector3, CompoundTag> tiles = set.getTiles();
+                Map<BlockVector3, FaweCompoundTag> tiles = set.tiles();
                 if (tiles != null && !tiles.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[1];
                     }
 
                     syncTasks[0] = () -> {
-                        for (final Map.Entry<BlockVector3, CompoundTag> entry : tiles.entrySet()) {
+                        for (final Map.Entry<BlockVector3, FaweCompoundTag> entry : tiles.entrySet()) {
-                            final CompoundTag nativeTag = entry.getValue();
+                            final FaweCompoundTag nativeTag = entry.getValue();
                             final BlockVector3 blockHash = entry.getKey();
                             final int x = blockHash.x() + bx;
                             final int y = blockHash.y();
                             final int z = blockHash.z() + bz;
                             final BlockPos pos = new BlockPos(x, y, z);
 
-                            synchronized (nmsWorld) {
+                            synchronized (serverLevel) {
-                                BlockEntity tileEntity = nmsWorld.getBlockEntity(pos);
+                                BlockEntity tileEntity = serverLevel.getBlockEntity(pos);
                                 if (tileEntity == null || tileEntity.isRemoved()) {
-                                    nmsWorld.removeBlockEntity(pos);
+                                    serverLevel.removeBlockEntity(pos);
-                                    tileEntity = nmsWorld.getBlockEntity(pos);
+                                    tileEntity = serverLevel.getBlockEntity(pos);
                                 }
                                 if (tileEntity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final net.minecraft.nbt.CompoundTag tag = (CompoundTag) adapter.fromNativeLin(nativeTag.linTag());
-                                            nativeTag);
                                     tag.put("x", IntTag.valueOf(x));
                                     tag.put("y", IntTag.valueOf(y));
                                     tag.put("z", IntTag.valueOf(z));
@@ -822,7 +834,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     callback = null;
                 } else {
                     int finalMask = bitMask != 0 ? bitMask : lightUpdate ? set.getBitMask() : 0;
-                    boolean finalLightUpdate = lightUpdate;
                     callback = () -> {
                         // Set Modified
                         nmsChunk.setLightCorrect(true); // Set Modified
@@ -927,7 +938,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
     @Override
     public void send() {
-        PaperweightPlatformAdapter.sendChunk(this, serverLevel, chunkX, chunkZ);
+        PaperweightPlatformAdapter.sendChunk(new IntPair(chunkX, chunkZ), serverLevel, chunkX, chunkZ);
     }
 
     /**

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightGetBlocks_Copy.java

@@ -1,21 +1,22 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3;
 
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBlocks;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.util.NbtUtils;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
+import net.minecraft.nbt.Tag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.level.biome.Biome;
@@ -24,9 +25,11 @@ import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.PalettedContainer;
 import net.minecraft.world.level.chunk.PalettedContainerRO;
 import org.apache.logging.log4j.Logger;
+import org.enginehub.linbus.tree.LinCompoundTag;
 
 import javax.annotation.Nullable;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -38,8 +41,8 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
 
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
-    private final Map<BlockVector3, CompoundTag> tiles = new HashMap<>();
+    private final Map<BlockVector3, FaweCompoundTag> tiles = new HashMap<>();
-    private final Set<CompoundTag> entities = new HashSet<>();
+    private final Set<FaweCompoundTag> entities = new HashSet<>();
     private final char[][] blocks;
     private final int minHeight;
     private final int maxHeight;
@@ -56,44 +59,35 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     }
 
     protected void storeTile(BlockEntity blockEntity) {
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         tiles.put(
                 BlockVector3.at(
                         blockEntity.getBlockPos().getX(),
                         blockEntity.getBlockPos().getY(),
                         blockEntity.getBlockPos().getZ()
                 ),
-                new PaperweightLazyCompoundTag(Suppliers.memoize(blockEntity::saveWithId))
+                FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(blockEntity.saveWithId()))
         );
     }
 
-    @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
-        return tiles;
-    }
-
-    @Override
-    @Nullable
-    public CompoundTag getTile(int x, int y, int z) {
-        return tiles.get(BlockVector3.at(x, y, z));
-    }
-
-    @SuppressWarnings({"unchecked", "rawtypes"})
     protected void storeEntity(Entity entity) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         net.minecraft.nbt.CompoundTag compoundTag = new net.minecraft.nbt.CompoundTag();
         entity.save(compoundTag);
-        entities.add((CompoundTag) adapter.toNative(compoundTag));
+        entities.add(FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(compoundTag)));
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         return this.entities;
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
-        for (CompoundTag tag : entities) {
+        for (FaweCompoundTag tag : entities) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -179,8 +173,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
-            for (int i = 0; i < 64; i++) {
+            if (PaperLib.isPaper()) {
-                biomes[layer][i] = palettedContainer.get(i);
+                for (int i = 0; i < 64; i++) {
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(
@@ -194,7 +198,7 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     @Override
     public BaseBlock getFullBlock(int x, int y, int z) {
         BlockState state = BlockTypesCache.states[get(x, y, z)];
-        return state.toBaseBlock(this, x, y, z);
+        return state.toBaseBlock((IBlocks) this, x, y, z);
     }
 
     @Override
@@ -224,6 +228,16 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
         return BlockTypesCache.states[get(x, y, z)];
     }
 
+    @Override
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
+        return tiles;
+    }
+
+    @Override
+    public @Nullable FaweCompoundTag tile(final int x, final int y, final int z) {
+        return tiles.get(BlockVector3.at(x, y, z));
+    }
+
     @Override
     public int getSkyLight(int x, int y, int z) {
         return 0;

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightPlatformAdapter.java

@@ -7,8 +7,8 @@ import com.fastasyncworldedit.bukkit.adapter.NMSAdapter;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.util.MathMan;
-import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.fastasyncworldedit.core.util.TaskManager;
 import com.mojang.datafixers.util.Either;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
@@ -123,6 +123,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Field LEVEL_CHUNK_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -212,6 +214,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             } catch (NoSuchFieldException ignored) {
             }
             POST_CHUNK_REWRITE = chunkRewrite;
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {
@@ -234,15 +243,14 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     static boolean setSectionAtomic(
+            String worldName,
+            IntPair pair,
             LevelChunkSection[] sections,
             LevelChunkSection expected,
             LevelChunkSection value,
             int layer
     ) {
-        if (layer >= 0 && layer < sections.length) {
+        return NMSAdapter.setSectionAtomic(worldName, pair, sections, expected, value, layer);
-            return ReflectionUtils.compareAndSet(sections, expected, value, layer);
-        }
-        return false;
     }
 
     // There is no point in having a functional semaphore for paper servers.
@@ -340,7 +348,7 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     @SuppressWarnings("deprecation")
-    public static void sendChunk(Object chunk, ServerLevel nmsWorld, int chunkX, int chunkZ) {
+    public static void sendChunk(IntPair pair, ServerLevel nmsWorld, int chunkX, int chunkZ) {
         ChunkHolder chunkHolder = getPlayerChunk(nmsWorld, chunkX, chunkZ);
         if (chunkHolder == null) {
             return;
@@ -361,26 +369,35 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
         if (levelChunk == null) {
             return;
         }
+        StampLockHolder lockHolder = new StampLockHolder();
+        NMSAdapter.beginChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
+        if (lockHolder.chunkLock == null) {
+            return;
+        }
         MinecraftServer.getServer().execute(() -> {
-            ClientboundLevelChunkWithLightPacket packet;
+            try {
-            if (PaperLib.isPaper()) {
+                ClientboundLevelChunkWithLightPacket packet;
-                packet = new ClientboundLevelChunkWithLightPacket(
+                if (PaperLib.isPaper()) {
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null,
+                            null,
-                        false // last false is to not bother with x-ray
+                            null,
-                );
+                            false // last false is to not bother with x-ray
-            } else {
+                    );
-                // deprecated on paper - deprecation suppressed
+                } else {
-                packet = new ClientboundLevelChunkWithLightPacket(
+                    // deprecated on paper - deprecation suppressed
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null
+                            null,
-                );
+                            null
+                    );
+                }
+                nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
+            } finally {
+                NMSAdapter.endChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
             }
-            nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
         });
     }
 

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightStarlightRelighter.java

@@ -2,6 +2,7 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3;
 
 import com.fastasyncworldedit.bukkit.adapter.StarlightRelighter;
 import com.fastasyncworldedit.core.configuration.Settings;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.queue.IQueueExtent;
 import net.minecraft.server.level.ChunkMap;
 import net.minecraft.server.level.ServerLevel;
@@ -67,7 +68,7 @@ public class PaperweightStarlightRelighter extends StarlightRelighter<ServerLeve
             int x = pos.x;
             int z = pos.z;
             if (delay) { // we still need to send the block changes of that chunk
-                PaperweightPlatformAdapter.sendChunk(pos, serverLevel, x, z);
+                PaperweightPlatformAdapter.sendChunk(new IntPair(x, z), serverLevel, x, z);
             }
             serverLevel.getChunkSource().removeTicketAtLevel(FAWE_TICKET, pos, LIGHT_LEVEL, Unit.INSTANCE);
         }

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/regen/PaperweightRegen.java

@@ -4,166 +4,74 @@ import com.fastasyncworldedit.bukkit.adapter.Regenerator;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.queue.IChunkCache;
 import com.fastasyncworldedit.core.queue.IChunkGet;
-import com.fastasyncworldedit.core.util.TaskManager;
+import com.fastasyncworldedit.core.queue.implementation.chunk.ChunkCache;
 import com.google.common.collect.ImmutableList;
-import com.mojang.datafixers.util.Either;
 import com.mojang.serialization.Lifecycle;
+import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3.PaperweightGetBlocks;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.io.file.SafeFiles;
 import com.sk89q.worldedit.world.RegenOptions;
-import it.unimi.dsi.fastutil.objects.Object2ObjectArrayMap;
 import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.dedicated.DedicatedServer;
-import net.minecraft.server.level.ChunkMap;
-import net.minecraft.server.level.ChunkTaskPriorityQueueSorter.Message;
-import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ThreadedLevelLightEngine;
 import net.minecraft.server.level.progress.ChunkProgressListener;
-import net.minecraft.util.thread.ProcessorHandle;
+import net.minecraft.util.ProgressListener;
-import net.minecraft.util.thread.ProcessorMailbox;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.LevelHeightAccessor;
 import net.minecraft.world.level.LevelSettings;
 import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.FixedBiomeSource;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
 import net.minecraft.world.level.chunk.ChunkStatus;
-import net.minecraft.world.level.chunk.LevelChunk;
-import net.minecraft.world.level.chunk.ProtoChunk;
-import net.minecraft.world.level.chunk.UpgradeData;
 import net.minecraft.world.level.dimension.LevelStem;
-import net.minecraft.world.level.levelgen.FlatLevelSource;
 import net.minecraft.world.level.levelgen.NoiseBasedChunkGenerator;
-import net.minecraft.world.level.levelgen.NoiseGeneratorSettings;
 import net.minecraft.world.level.levelgen.WorldOptions;
-import net.minecraft.world.level.levelgen.blending.BlendingData;
-import net.minecraft.world.level.levelgen.flat.FlatLevelGeneratorSettings;
-import net.minecraft.world.level.levelgen.structure.placement.ConcentricRingsStructurePlacement;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
 import net.minecraft.world.level.storage.LevelStorageSource;
 import net.minecraft.world.level.storage.PrimaryLevelData;
-import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
-import org.bukkit.Chunk;
+import org.bukkit.World;
 import org.bukkit.craftbukkit.v1_20_R3.CraftServer;
 import org.bukkit.craftbukkit.v1_20_R3.CraftWorld;
-import org.bukkit.craftbukkit.v1_20_R3.generator.CustomChunkGenerator;
 import org.bukkit.generator.BiomeProvider;
-import org.bukkit.generator.BlockPopulator;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
-import javax.annotation.Nullable;
 import java.lang.reflect.Field;
 import java.nio.file.Path;
-import java.util.Collections;
-import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.OptionalLong;
-import java.util.Random;
-import java.util.concurrent.CompletableFuture;
 import java.util.function.BooleanSupplier;
 import java.util.function.Supplier;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
-public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, LevelChunk, PaperweightRegen.ChunkStatusWrap> {
+public class PaperweightRegen extends Regenerator {
-
-    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Field serverWorldsField;
     private static final Field paperConfigField;
-    private static final Field flatBedrockField;
-    private static final Field generatorSettingFlatField;
     private static final Field generatorSettingBaseSupplierField;
-    private static final Field delegateField;
-    private static final Field chunkSourceField;
-    private static final Field generatorStructureStateField;
-    private static final Field ringPositionsField;
-    private static final Field hasGeneratedPositionsField;
 
-    //list of chunk stati in correct order without FULL
-    private static final Map<ChunkStatus, Concurrency> chunkStati = new LinkedHashMap<>();
 
     static {
-        chunkStati.put(ChunkStatus.EMPTY, Concurrency.FULL);   // empty: radius -1, does nothing
-        chunkStati.put(ChunkStatus.STRUCTURE_STARTS, Concurrency.NONE);   // structure starts: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.STRUCTURE_REFERENCES,
-                Concurrency.FULL
-        );   // structure refs: radius 8, but only writes to current chunk
-        chunkStati.put(ChunkStatus.BIOMES, Concurrency.FULL);   // biomes: radius 0
-        chunkStati.put(ChunkStatus.NOISE, Concurrency.RADIUS); // noise: radius 8
-        chunkStati.put(ChunkStatus.SURFACE, Concurrency.NONE);   // surface: radius 0, requires NONE
-        chunkStati.put(ChunkStatus.CARVERS, Concurrency.NONE);   // carvers: radius 0, but RADIUS and FULL change results
-        /*chunkStati.put(
-                ChunkStatus.LIQUID_CARVERS,
-                Concurrency.NONE
-        );   // liquid carvers: radius 0, but RADIUS and FULL change results*/
-        chunkStati.put(ChunkStatus.FEATURES, Concurrency.NONE);   // features: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.LIGHT,
-                Concurrency.FULL
-        );   // light: radius 1, but no writes to other chunks, only current chunk
-        chunkStati.put(ChunkStatus.SPAWN, Concurrency.FULL);   // spawn: radius 0
-        // chunkStati.put(ChunkStatus.HEIGHTMAPS, Concurrency.FULL);   // heightmaps: radius 0
-
         try {
             serverWorldsField = CraftServer.class.getDeclaredField("worlds");
             serverWorldsField.setAccessible(true);
 
             Field tmpPaperConfigField;
-            Field tmpFlatBedrockField;
             try { //only present on paper
                 tmpPaperConfigField = Level.class.getDeclaredField("paperConfig");
                 tmpPaperConfigField.setAccessible(true);
-
-                tmpFlatBedrockField = tmpPaperConfigField.getType().getDeclaredField("generateFlatBedrock");
-                tmpFlatBedrockField.setAccessible(true);
             } catch (Exception e) {
                 tmpPaperConfigField = null;
-                tmpFlatBedrockField = null;
             }
             paperConfigField = tmpPaperConfigField;
-            flatBedrockField = tmpFlatBedrockField;
 
             generatorSettingBaseSupplierField = NoiseBasedChunkGenerator.class.getDeclaredField(Refraction.pickName(
                     "settings", "e"));
             generatorSettingBaseSupplierField.setAccessible(true);
-
-            generatorSettingFlatField = FlatLevelSource.class.getDeclaredField(Refraction.pickName("settings", "d"));
-            generatorSettingFlatField.setAccessible(true);
-
-            delegateField = CustomChunkGenerator.class.getDeclaredField("delegate");
-            delegateField.setAccessible(true);
-
-            chunkSourceField = ServerLevel.class.getDeclaredField(Refraction.pickName("chunkSource", "I"));
-            chunkSourceField.setAccessible(true);
-
-            generatorStructureStateField = ChunkMap.class.getDeclaredField(Refraction.pickName("chunkGeneratorState", "v"));
-            generatorStructureStateField.setAccessible(true);
-
-            ringPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(Refraction.pickName("ringPositions", "g"));
-            ringPositionsField.setAccessible(true);
-
-            hasGeneratedPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(
-                    Refraction.pickName("hasGeneratedPositions", "h")
-            );
-            hasGeneratedPositionsField.setAccessible(true);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -171,43 +79,37 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     //runtime
     private ServerLevel originalServerWorld;
-    private ServerChunkCache originalChunkProvider;
     private ServerLevel freshWorld;
-    private ServerChunkCache freshChunkProvider;
     private LevelStorageSource.LevelStorageAccess session;
-    private StructureTemplateManager structureTemplateManager;
-    private ThreadedLevelLightEngine threadedLevelLightEngine;
-    private ChunkGenerator chunkGenerator;
 
     private Path tempDir;
 
-    private boolean generateFlatBedrock = false;
+    public PaperweightRegen(
-
+            World originalBukkitWorld,
-    public PaperweightRegen(org.bukkit.World originalBukkitWorld, Region region, Extent target, RegenOptions options) {
+            Region region,
+            Extent target,
+            RegenOptions options
+    ) {
         super(originalBukkitWorld, region, target, options);
     }
 
+    @Override
+    protected void runTasks(final BooleanSupplier shouldKeepTicking) {
+        while (shouldKeepTicking.getAsBoolean()) {
+            if (!this.freshWorld.getChunkSource().pollTask()) {
+                return;
+            }
+        }
+    }
+
     @Override
     protected boolean prepare() {
         this.originalServerWorld = ((CraftWorld) originalBukkitWorld).getHandle();
-        originalChunkProvider = originalServerWorld.getChunkSource();
-
-        //flat bedrock? (only on paper)
-        if (paperConfigField != null) {
-            try {
-                generateFlatBedrock = flatBedrockField.getBoolean(paperConfigField.get(originalServerWorld));
-            } catch (Exception ignored) {
-            }
-        }
-
         seed = options.getSeed().orElse(originalServerWorld.getSeed());
-        chunkStati.forEach((s, c) -> super.chunkStatuses.put(new ChunkStatusWrap(s), c));
-
         return true;
     }
 
     @Override
-    @SuppressWarnings("unchecked")
     protected boolean initNewWorld() throws Exception {
         //world folder
         tempDir = java.nio.file.Files.createTempDirectory("FastAsyncWorldEditWorldGen");
@@ -253,8 +155,10 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                 session,
                 newWorldData,
                 originalServerWorld.dimension(),
-                DedicatedServer.getServer().registryAccess().registry(Registries.LEVEL_STEM).orElseThrow()
+                new LevelStem(
-                        .getOrThrow(levelStemResourceKey),
+                        originalServerWorld.dimensionTypeRegistration(),
+                        originalServerWorld.getChunkSource().getGenerator()
+                ),
                 new RegenNoOpWorldLoadListener(),
                 originalServerWorld.isDebug(),
                 seed,
@@ -272,17 +176,30 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                     ) : null;
 
             @Override
-            public void tick(BooleanSupplier shouldKeepTicking) { //no ticking
+            public @NotNull Holder<Biome> getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
-            }
-
-            @Override
-            public Holder<Biome> getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
                 if (options.hasBiomeType()) {
                     return singleBiome;
                 }
-                return PaperweightRegen.this.chunkGenerator.getBiomeSource().getNoiseBiome(
+                return super.getUncachedNoiseBiome(biomeX, biomeY, biomeZ);
-                        biomeX, biomeY, biomeZ, getChunkSource().randomState().sampler()
+            }
-                );
+
+            @Override
+            public void save(
+                    @org.jetbrains.annotations.Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled
+            ) {
+                // noop, spigot
+            }
+
+            @Override
+            public void save(
+                    @Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled,
+                    final boolean close
+            ) {
+                // noop, paper
             }
         }).get();
         freshWorld.noSave = true;
@@ -291,89 +208,6 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         if (paperConfigField != null) {
             paperConfigField.set(freshWorld, originalServerWorld.paperConfig());
         }
-
-        ChunkGenerator originalGenerator = originalChunkProvider.getGenerator();
-        if (originalGenerator instanceof FlatLevelSource flatLevelSource) {
-            FlatLevelGeneratorSettings generatorSettingFlat = flatLevelSource.settings();
-            chunkGenerator = new FlatLevelSource(generatorSettingFlat);
-        } else if (originalGenerator instanceof NoiseBasedChunkGenerator noiseBasedChunkGenerator) {
-            Holder<NoiseGeneratorSettings> generatorSettingBaseSupplier = (Holder<NoiseGeneratorSettings>) generatorSettingBaseSupplierField.get(
-                    originalGenerator);
-            BiomeSource biomeSource;
-            if (options.hasBiomeType()) {
-
-                biomeSource = new FixedBiomeSource(
-                        DedicatedServer.getServer().registryAccess()
-                                .registryOrThrow(BIOME).asHolderIdMap().byIdOrThrow(
-                                        WorldEditPlugin.getInstance().getBukkitImplAdapter().getInternalBiomeId(options.getBiomeType())
-                                )
-                );
-            } else {
-                biomeSource = originalGenerator.getBiomeSource();
-            }
-            chunkGenerator = new NoiseBasedChunkGenerator(
-                    biomeSource,
-                    generatorSettingBaseSupplier
-            );
-        } else if (originalGenerator instanceof CustomChunkGenerator customChunkGenerator) {
-            chunkGenerator = customChunkGenerator.getDelegate();
-        } else {
-            LOGGER.error("Unsupported generator type {}", originalGenerator.getClass().getName());
-            return false;
-        }
-        if (generator != null) {
-            chunkGenerator = new CustomChunkGenerator(freshWorld, chunkGenerator, generator);
-            generateConcurrent = generator.isParallelCapable();
-        }
-//        chunkGenerator.conf = freshWorld.spigotConfig; - Does not exist anymore, may need to be re-addressed
-
-        freshChunkProvider = new ServerChunkCache(
-                freshWorld,
-                session,
-                server.getFixerUpper(),
-                server.getStructureManager(),
-                server.executor,
-                chunkGenerator,
-                freshWorld.spigotConfig.viewDistance,
-                freshWorld.spigotConfig.simulationDistance,
-                server.forceSynchronousWrites(),
-                new RegenNoOpWorldLoadListener(),
-                (chunkCoordIntPair, state) -> {
-                },
-                () -> server.overworld().getDataStorage()
-        ) {
-            // redirect to LevelChunks created in #createChunks
-            @Override
-            public ChunkAccess getChunk(int x, int z, ChunkStatus chunkstatus, boolean create) {
-                ChunkAccess chunkAccess = getChunkAt(x, z);
-                if (chunkAccess == null && create) {
-                    chunkAccess = createChunk(getProtoChunkAt(x, z));
-                }
-                return chunkAccess;
-            }
-        };
-
-        if (seed == originalOpts.seed() && !options.hasBiomeType()) {
-            // Optimisation for needless ring position calculation when the seed and biome is the same.
-            ChunkGeneratorStructureState state = (ChunkGeneratorStructureState) generatorStructureStateField.get(originalChunkProvider.chunkMap);
-            boolean hasGeneratedPositions = hasGeneratedPositionsField.getBoolean(state);
-            if (hasGeneratedPositions) {
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> origPositions =
-                        (Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>>) ringPositionsField.get(state);
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> copy = new Object2ObjectArrayMap<>(
-                        origPositions);
-                ChunkGeneratorStructureState newState = (ChunkGeneratorStructureState) generatorStructureStateField.get(freshChunkProvider.chunkMap);
-                ringPositionsField.set(newState, copy);
-                hasGeneratedPositionsField.setBoolean(newState, true);
-            }
-        }
-
-
-        chunkSourceField.set(freshWorld, freshChunkProvider);
-        //let's start then
-        structureTemplateManager = server.getStructureManager();
-        threadedLevelLightEngine = new NoOpLightEngine(freshChunkProvider);
-
         return true;
     }
 
@@ -388,7 +222,8 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         try {
             Fawe.instance().getQueueHandler().sync(() -> {
                 try {
-                    freshChunkProvider.close(false);
+                    freshWorld.getChunkSource().getDataStorage().cache.clear();
+                    freshWorld.getChunkSource().close(false);
                 } catch (Exception e) {
                     throw new RuntimeException(e);
                 }
@@ -409,63 +244,20 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         }
     }
 
-    @Override
-    protected ProtoChunk createProtoChunk(int x, int z) {
-        return new FastProtoChunk(new ChunkPos(x, z), UpgradeData.EMPTY, freshWorld,
-                this.freshWorld.registryAccess().registryOrThrow(BIOME), null
-        );
-    }
-
-    @Override
-    protected LevelChunk createChunk(ProtoChunk protoChunk) {
-        return new LevelChunk(
-                freshWorld,
-                protoChunk,
-                null // we don't want to add entities
-        );
-    }
-
-    @Override
-    protected ChunkStatusWrap getFullChunkStatus() {
-        return new ChunkStatusWrap(ChunkStatus.FULL);
-    }
-
-    @Override
-    protected List<BlockPopulator> getBlockPopulators() {
-        return originalServerWorld.getWorld().getPopulators();
-    }
-
-    @Override
-    protected void populate(LevelChunk levelChunk, Random random, BlockPopulator blockPopulator) {
-        // BlockPopulator#populate has to be called synchronously for TileEntity access
-        TaskManager.taskManager().task(() -> {
-            final CraftWorld world = freshWorld.getWorld();
-            final Chunk chunk = world.getChunkAt(levelChunk.locX, levelChunk.locZ);
-            blockPopulator.populate(world, random, chunk);
-        });
-    }
-
     @Override
     protected IChunkCache<IChunkGet> initSourceQueueCache() {
-        return (chunkX, chunkZ) -> new PaperweightGetBlocks(freshWorld, chunkX, chunkZ) {
+        return new ChunkCache<>(BukkitAdapter.adapt(freshWorld.getWorld()));
-            @Override
-            public LevelChunk ensureLoaded(ServerLevel nmsWorld, int x, int z) {
-                return getChunkAt(x, z);
-            }
-        };
     }
 
     //util
     @SuppressWarnings("unchecked")
     private void removeWorldFromWorldsMap() {
-        Fawe.instance().getQueueHandler().sync(() -> {
+        try {
-            try {
+            Map<String, org.bukkit.World> map = (Map<String, org.bukkit.World>) serverWorldsField.get(Bukkit.getServer());
-                Map<String, org.bukkit.World> map = (Map<String, org.bukkit.World>) serverWorldsField.get(Bukkit.getServer());
+            map.remove("faweregentempworld");
-                map.remove("faweregentempworld");
+        } catch (IllegalAccessException e) {
-            } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
-                throw new RuntimeException(e);
+        }
-            }
-        });
     }
 
     private ResourceKey<LevelStem> getWorldDimKey(org.bukkit.World.Environment env) {
@@ -482,11 +274,15 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         }
 
         @Override
-        public void updateSpawnPos(ChunkPos spawnPos) {
+        public void updateSpawnPos(@NotNull ChunkPos spawnPos) {
         }
 
         @Override
-        public void onStatusChange(ChunkPos pos, @Nullable ChunkStatus status) {
+        public void onStatusChange(
+                final @NotNull ChunkPos pos,
+                @org.jetbrains.annotations.Nullable final ChunkStatus status
+        ) {
+
         }
 
         @Override
@@ -504,87 +300,4 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     }
 
-    private class FastProtoChunk extends ProtoChunk {
-
-        public FastProtoChunk(
-                final ChunkPos pos,
-                final UpgradeData upgradeData,
-                final LevelHeightAccessor world,
-                final Registry<Biome> biomeRegistry,
-                @Nullable final BlendingData blendingData
-        ) {
-            super(pos, upgradeData, world, biomeRegistry, blendingData);
-        }
-
-        // avoid warning on paper
-
-        // compatibility with spigot
-
-        public boolean generateFlatBedrock() {
-            return generateFlatBedrock;
-        }
-
-        // no one will ever see the entities!
-        @Override
-        public List<CompoundTag> getEntities() {
-            return Collections.emptyList();
-        }
-
-    }
-
-    protected class ChunkStatusWrap extends ChunkStatusWrapper<ChunkAccess> {
-
-        private final ChunkStatus chunkStatus;
-
-        public ChunkStatusWrap(ChunkStatus chunkStatus) {
-            this.chunkStatus = chunkStatus;
-        }
-
-        @Override
-        public int requiredNeighborChunkRadius() {
-            return chunkStatus.getRange();
-        }
-
-        @Override
-        public String name() {
-            return chunkStatus.toString();
-        }
-
-        @Override
-        public CompletableFuture<?> processChunk(List<ChunkAccess> accessibleChunks) {
-            return chunkStatus.generate(
-                    Runnable::run, // TODO revisit, we might profit from this somehow?
-                    freshWorld,
-                    chunkGenerator,
-                    structureTemplateManager,
-                    threadedLevelLightEngine,
-                    c -> CompletableFuture.completedFuture(Either.left(c)),
-                    accessibleChunks
-            );
-        }
-
-    }
-
-    /**
-     * A light engine that does nothing. As light is calculated after pasting anyway, we can avoid
-     * work this way.
-     */
-    static class NoOpLightEngine extends ThreadedLevelLightEngine {
-
-        private static final ProcessorMailbox<Runnable> MAILBOX = ProcessorMailbox.create(task -> {
-        }, "fawe-no-op");
-        private static final ProcessorHandle<Message<Runnable>> HANDLE = ProcessorHandle.of("fawe-no-op", m -> {
-        });
-
-        public NoOpLightEngine(final ServerChunkCache chunkProvider) {
-            super(chunkProvider, chunkProvider.chunkMap, false, MAILBOX, HANDLE);
-        }
-
-        @Override
-        public CompletableFuture<ChunkAccess> lightChunk(final ChunkAccess chunk, final boolean excludeBlocks) {
-            return CompletableFuture.completedFuture(chunk);
-        }
-
-    }
-
 }

worldedit-bukkit/adapters/adapter-1_20_5/build.gradle.kts

@@ -12,6 +12,6 @@ repositories {
 
 dependencies {
     // url=https://repo.papermc.io/service/rest/repository/browse/maven-public/io/papermc/paper/dev-bundle/1.20.6-R0.1-SNAPSHOT/
-    the<PaperweightUserDependenciesExtension>().paperDevBundle("1.20.6-R0.1-20240702.153951-123")
+    the<PaperweightUserDependenciesExtension>().paperDevBundle("1.20.6-R0.1-20240916.192025-125")
     compileOnly(libs.paperlib)
 }

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightBlockMaterial.java

@@ -1,11 +1,8 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4;
 
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
 import net.minecraft.core.BlockPos;
-import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.world.level.EmptyBlockGetter;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.EntityBlock;
@@ -15,6 +12,8 @@ import net.minecraft.world.level.material.Fluids;
 import net.minecraft.world.level.material.PushReaction;
 import org.bukkit.craftbukkit.block.data.CraftBlockData;
 
+import javax.annotation.Nullable;
+
 public class PaperweightBlockMaterial implements BlockMaterial {
 
     private final Block block;
@@ -22,7 +21,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     private final CraftBlockData craftBlockData;
     private final org.bukkit.Material craftMaterial;
     private final int opacity;
-    private final CompoundTag tile;
+    private final FaweCompoundTag tile;
 
     public PaperweightBlockMaterial(Block block) {
         this(block, block.defaultBlockState());
@@ -38,9 +37,9 @@ public class PaperweightBlockMaterial implements BlockMaterial {
                 BlockPos.ZERO,
                 blockState
         );
-        tile = tileEntity == null ? null : new PaperweightLazyCompoundTag(
+        tile = tileEntity == null
-                Suppliers.memoize(() -> tileEntity.saveWithId(DedicatedServer.getServer().registryAccess()))
+                ? null
-        );
+                : PaperweightGetBlocks.NMS_TO_TILE.apply(tileEntity);
     }
 
     public Block getBlock() {
@@ -126,9 +125,10 @@ public class PaperweightBlockMaterial implements BlockMaterial {
         return blockState.isRandomlyTicking();
     }
 
+    @SuppressWarnings("deprecation")
     @Override
     public boolean isMovementBlocker() {
-        return craftMaterial.isSolid();
+        return blockState.blocksMotion();
     }
 
     @Override
@@ -163,7 +163,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     }
 
     @Override
-    public CompoundTag getDefaultTile() {
+    public @Nullable FaweCompoundTag defaultTile() {
         return tile;
     }
 

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightFaweAdapter.java

@@ -5,6 +5,7 @@ import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.packet.ChunkPacket;
@@ -103,6 +104,7 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.OptionalInt;
 import java.util.Set;
+import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -138,6 +140,12 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         this.parent = new com.sk89q.worldedit.bukkit.adapter.ext.fawe.v1_20_R4.PaperweightAdapter();
     }
 
+    public Function<BlockEntity, FaweCompoundTag> blockEntityToCompoundTag() {
+        return blockEntity -> FaweCompoundTag.of(
+                () -> (LinCompoundTag) toNativeLin(blockEntity.saveWithId(DedicatedServer.getServer().registryAccess()))
+        );
+    }
+
     @Nullable
     private static String getEntityId(Entity entity) {
         ResourceLocation resourceLocation = net.minecraft.world.entity.EntityType.getKey(entity.getType());

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightGetBlocks.java

@@ -7,20 +7,17 @@ import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.queue.implementation.QueueHandler;
 import com.fastasyncworldedit.core.queue.implementation.blocks.CharGetBlocks;
 import com.fastasyncworldedit.core.util.MathMan;
+import com.fastasyncworldedit.core.util.NbtUtils;
 import com.fastasyncworldedit.core.util.collection.AdaptedMap;
-import com.google.common.base.Suppliers;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.jnbt.ListTag;
-import com.sk89q.jnbt.StringTag;
-import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -34,6 +31,7 @@ import net.minecraft.core.Holder;
 import net.minecraft.core.IdMap;
 import net.minecraft.core.Registry;
 import net.minecraft.core.SectionPos;
+import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.IntTag;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.server.level.ServerLevel;
@@ -62,11 +60,19 @@ import org.bukkit.World;
 import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.craftbukkit.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.enginehub.linbus.tree.LinCompoundTag;
+import org.enginehub.linbus.tree.LinDoubleTag;
+import org.enginehub.linbus.tree.LinFloatTag;
+import org.enginehub.linbus.tree.LinListTag;
+import org.enginehub.linbus.tree.LinStringTag;
+import org.enginehub.linbus.tree.LinTagType;
 
 import javax.annotation.Nonnull;
-import java.util.AbstractSet;
+import javax.annotation.Nullable;
+import java.util.AbstractCollection;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -83,7 +89,6 @@ import java.util.concurrent.locks.ReadWriteLock;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.function.Function;
-import java.util.stream.Collectors;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
@@ -92,9 +97,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPos, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
-    private static final Function<BlockEntity, CompoundTag> nmsTile2We = tileEntity -> new PaperweightLazyCompoundTag(
+    public static final Function<BlockEntity, FaweCompoundTag> NMS_TO_TILE = ((PaperweightFaweAdapter) WorldEditPlugin
-            Suppliers.memoize(() -> tileEntity.saveWithId(DedicatedServer.getServer().registryAccess()))
+            .getInstance()
-    );
+            .getBukkitImplAdapter()).blockEntityToCompoundTag();
     private final PaperweightFaweAdapter adapter = ((PaperweightFaweAdapter) WorldEditPlugin
             .getInstance()
             .getBukkitImplAdapter());
@@ -103,6 +108,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final ServerLevel serverLevel;
     private final int chunkX;
     private final int chunkZ;
+    private final IntPair chunkPos;
     private final int minHeight;
     private final int maxHeight;
     private final int minSectionPosition;
@@ -137,6 +143,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         this.blockLight = new DataLayer[getSectionCount()];
         this.biomeRegistry = serverLevel.registryAccess().registryOrThrow(BIOME);
         this.biomeHolderIdMap = biomeRegistry.asHolderIdMap();
+        this.chunkPos = new IntPair(chunkX, chunkZ);
     }
 
     public int getChunkX() {
@@ -258,23 +265,24 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getTile(int x, int y, int z) {
+    public FaweCompoundTag tile(final int x, final int y, final int z) {
         BlockEntity blockEntity = getChunk().getBlockEntity(new BlockPos((x & 15) + (
                 chunkX << 4), y, (z & 15) + (
                 chunkZ << 4)));
         if (blockEntity == null) {
             return null;
         }
-        return new PaperweightLazyCompoundTag(Suppliers.memoize(() -> blockEntity.saveWithId(DedicatedServer.getServer().registryAccess())));
+        return NMS_TO_TILE.apply(blockEntity);
+
     }
 
     @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
         Map<BlockPos, BlockEntity> nmsTiles = getChunk().getBlockEntities();
         if (nmsTiles.isEmpty()) {
             return Collections.emptyMap();
         }
-        return AdaptedMap.immutable(nmsTiles, posNms2We, nmsTile2We);
+        return AdaptedMap.immutable(nmsTiles, posNms2We, NMS_TO_TILE);
     }
 
     @Override
@@ -337,7 +345,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         Entity entity = null;
@@ -349,10 +357,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         }
         if (entity != null) {
             org.bukkit.entity.Entity bukkitEnt = entity.getBukkitEntity();
-            return BukkitAdapter.adapt(bukkitEnt).getState().getNbtData();
+            return FaweCompoundTag.of(BukkitAdapter.adapt(bukkitEnt).getState().getNbt());
         }
-        for (CompoundTag tag : getEntities()) {
+        for (FaweCompoundTag tag : entities()) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -360,14 +368,14 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         if (entities.isEmpty()) {
-            return Collections.emptySet();
+            return Collections.emptyList();
         }
         int size = entities.size();
-        return new AbstractSet<>() {
+        return new AbstractCollection<>() {
             @Override
             public int size() {
                 return size;
@@ -380,10 +388,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Override
             public boolean contains(Object get) {
-                if (!(get instanceof CompoundTag getTag)) {
+                if (!(get instanceof FaweCompoundTag getTag)) {
                     return false;
                 }
-                UUID getUUID = getTag.getUUID();
+                UUID getUUID = NbtUtils.uuid(getTag);
                 for (Entity entity : entities) {
                     UUID uuid = entity.getUUID();
                     if (uuid.equals(getUUID)) {
@@ -395,12 +403,12 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Nonnull
             @Override
-            public Iterator<CompoundTag> iterator() {
+            public Iterator<FaweCompoundTag> iterator() {
-                Iterable<CompoundTag> result = entities.stream().map(input -> {
+                Iterable<FaweCompoundTag> result = entities.stream().map(input -> {
                     net.minecraft.nbt.CompoundTag tag = new net.minecraft.nbt.CompoundTag();
                     input.save(tag);
-                    return (CompoundTag) adapter.toNative(tag);
+                    return FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(tag));
-                }).collect(Collectors.toList());
+                })::iterator;
                 return result.iterator();
             }
         };
@@ -421,7 +429,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             throw new IllegalStateException("Attempted to call chunk GET but chunk was not call-locked.");
         }
         forceLoadSections = false;
-        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(levelChunk) : null;
+        LevelChunk nmsChunk = ensureLoaded(serverLevel, chunkX, chunkZ);
+        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(nmsChunk) : null;
         if (createCopy) {
             if (copies.containsKey(copyKey)) {
                 throw new IllegalStateException("Copy key already used.");
@@ -429,9 +438,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             copies.put(copyKey, copy);
         }
         try {
-            ServerLevel nmsWorld = serverLevel;
-            LevelChunk nmsChunk = ensureLoaded(nmsWorld, chunkX, chunkZ);
-
             // Remove existing tiles. Create a copy so that we can remove blocks
             Map<BlockPos, BlockEntity> chunkTiles = new HashMap<>(nmsChunk.getBlockEntities());
             List<BlockEntity> beacons = null;
@@ -503,6 +509,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                             biomeData
                                     );
                                     if (PaperweightPlatformAdapter.setSectionAtomic(
+                                            serverLevel.getWorld().getName(),
+                                            chunkPos,
                                             levelChunkSections,
                                             null,
                                             newSection,
@@ -580,6 +588,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeData
                             );
                             if (PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
                                     levelChunkSections,
                                     null,
                                     newSection,
@@ -644,7 +654,11 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeRegistry,
                                     biomeData != null ? biomeData : (PalettedContainer<Holder<Biome>>) existingSection.getBiomes()
                             );
-                            if (!PaperweightPlatformAdapter.setSectionAtomic(levelChunkSections, existingSection,
+                            if (!PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
+                                    levelChunkSections,
+                                    existingSection,
                                     newSection,
                                     getSectionIndex
                             )) {
@@ -716,7 +730,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         }
                         if (Settings.settings().EXPERIMENTAL.REMOVE_ENTITY_FROM_WORLD_ON_CHUNK_FAIL) {
                             for (UUID uuid : entityRemoves) {
-                                Entity entity = nmsWorld.getEntities().get(uuid);
+                                Entity entity = serverLevel.getEntities().get(uuid);
                                 if (entity != null) {
                                     removeEntity(entity);
                                 }
@@ -728,48 +742,47 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     };
                 }
 
-                Set<CompoundTag> entities = set.getEntities();
+                Collection<FaweCompoundTag> entities = set.entities();
                 if (entities != null && !entities.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[2];
                     }
 
                     syncTasks[1] = () -> {
-                        Iterator<CompoundTag> iterator = entities.iterator();
+                        Iterator<FaweCompoundTag> iterator = entities.iterator();
                         while (iterator.hasNext()) {
-                            final CompoundTag nativeTag = iterator.next();
+                            final FaweCompoundTag nativeTag = iterator.next();
-                            final Map<String, Tag<?, ?>> entityTagMap = nativeTag.getValue();
+                            final LinCompoundTag linTag = nativeTag.linTag();
-                            final StringTag idTag = (StringTag) entityTagMap.get("Id");
+                            final LinStringTag idTag = linTag.findTag("Id", LinTagType.stringTag());
-                            final ListTag posTag = (ListTag) entityTagMap.get("Pos");
+                            final LinListTag<LinDoubleTag> posTag = linTag.findListTag("Pos", LinTagType.doubleTag());
-                            final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
+                            final LinListTag<LinFloatTag> rotTag = linTag.findListTag("Rotation", LinTagType.floatTag());
                             if (idTag == null || posTag == null || rotTag == null) {
                                 LOGGER.error("Unknown entity tag: {}", nativeTag);
                                 continue;
                             }
-                            final double x = posTag.getDouble(0);
+                            final double x = posTag.get(0).valueAsDouble();
-                            final double y = posTag.getDouble(1);
+                            final double y = posTag.get(1).valueAsDouble();
-                            final double z = posTag.getDouble(2);
+                            final double z = posTag.get(2).valueAsDouble();
-                            final float yaw = rotTag.getFloat(0);
+                            final float yaw = rotTag.get(0).valueAsFloat();
-                            final float pitch = rotTag.getFloat(1);
+                            final float pitch = rotTag.get(1).valueAsFloat();
-                            final String id = idTag.getValue();
+                            final String id = idTag.value();
 
                             EntityType<?> type = EntityType.byString(id).orElse(null);
                             if (type != null) {
-                                Entity entity = type.create(nmsWorld);
+                                Entity entity = type.create(serverLevel);
                                 if (entity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNativeLin(linTag);
-                                            nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
                                     entity.load(tag);
                                     entity.absMoveTo(x, y, z, yaw, pitch);
-                                    entity.setUUID(nativeTag.getUUID());
+                                    entity.setUUID(NbtUtils.uuid(nativeTag));
-                                    if (!nmsWorld.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
+                                    if (!serverLevel.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
                                         LOGGER.warn(
                                                 "Error creating entity of type `{}` in world `{}` at location `{},{},{}`",
                                                 id,
-                                                nmsWorld.getWorld().getName(),
+                                                serverLevel.getWorld().getName(),
                                                 x,
                                                 y,
                                                 z
@@ -784,30 +797,29 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                 }
 
                 // set tiles
-                Map<BlockVector3, CompoundTag> tiles = set.getTiles();
+                Map<BlockVector3, FaweCompoundTag> tiles = set.tiles();
                 if (tiles != null && !tiles.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[1];
                     }
 
                     syncTasks[0] = () -> {
-                        for (final Map.Entry<BlockVector3, CompoundTag> entry : tiles.entrySet()) {
+                        for (final Map.Entry<BlockVector3, FaweCompoundTag> entry : tiles.entrySet()) {
-                            final CompoundTag nativeTag = entry.getValue();
+                            final FaweCompoundTag nativeTag = entry.getValue();
                             final BlockVector3 blockHash = entry.getKey();
                             final int x = blockHash.x() + bx;
                             final int y = blockHash.y();
                             final int z = blockHash.z() + bz;
                             final BlockPos pos = new BlockPos(x, y, z);
 
-                            synchronized (nmsWorld) {
+                            synchronized (serverLevel) {
-                                BlockEntity tileEntity = nmsWorld.getBlockEntity(pos);
+                                BlockEntity tileEntity = serverLevel.getBlockEntity(pos);
                                 if (tileEntity == null || tileEntity.isRemoved()) {
-                                    nmsWorld.removeBlockEntity(pos);
+                                    serverLevel.removeBlockEntity(pos);
-                                    tileEntity = nmsWorld.getBlockEntity(pos);
+                                    tileEntity = serverLevel.getBlockEntity(pos);
                                 }
                                 if (tileEntity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final net.minecraft.nbt.CompoundTag tag = (CompoundTag) adapter.fromNativeLin(nativeTag.linTag());
-                                            nativeTag);
                                     tag.put("x", IntTag.valueOf(x));
                                     tag.put("y", IntTag.valueOf(y));
                                     tag.put("z", IntTag.valueOf(z));
@@ -823,7 +835,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     callback = null;
                 } else {
                     int finalMask = bitMask != 0 ? bitMask : lightUpdate ? set.getBitMask() : 0;
-                    boolean finalLightUpdate = lightUpdate;
                     callback = () -> {
                         // Set Modified
                         nmsChunk.setLightCorrect(true); // Set Modified
@@ -929,7 +940,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     @Override
     public void send() {
         synchronized (sendLock) {
-            PaperweightPlatformAdapter.sendChunk(this, serverLevel, chunkX, chunkZ);
+            PaperweightPlatformAdapter.sendChunk(new IntPair(chunkX, chunkZ), serverLevel, chunkX, chunkZ);
         }
     }
 

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightGetBlocks_Copy.java

@@ -1,21 +1,22 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4;
 
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBlocks;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.util.NbtUtils;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
+import net.minecraft.nbt.Tag;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
@@ -25,9 +26,11 @@ import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.PalettedContainer;
 import net.minecraft.world.level.chunk.PalettedContainerRO;
 import org.apache.logging.log4j.Logger;
+import org.enginehub.linbus.tree.LinCompoundTag;
 
 import javax.annotation.Nullable;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -39,8 +42,8 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
 
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
-    private final Map<BlockVector3, CompoundTag> tiles = new HashMap<>();
+    private final Map<BlockVector3, FaweCompoundTag> tiles = new HashMap<>();
-    private final Set<CompoundTag> entities = new HashSet<>();
+    private final Set<FaweCompoundTag> entities = new HashSet<>();
     private final char[][] blocks;
     private final int minHeight;
     private final int maxHeight;
@@ -57,44 +60,37 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     }
 
     protected void storeTile(BlockEntity blockEntity) {
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         tiles.put(
                 BlockVector3.at(
                         blockEntity.getBlockPos().getX(),
                         blockEntity.getBlockPos().getY(),
                         blockEntity.getBlockPos().getZ()
                 ),
-                new PaperweightLazyCompoundTag(Suppliers.memoize(() -> blockEntity.saveWithId(DedicatedServer.getServer().registryAccess())))
+                FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(blockEntity.saveWithId(DedicatedServer
+                        .getServer()
+                        .registryAccess())))
         );
     }
 
-    @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
-        return tiles;
-    }
-
-    @Override
-    @Nullable
-    public CompoundTag getTile(int x, int y, int z) {
-        return tiles.get(BlockVector3.at(x, y, z));
-    }
-
-    @SuppressWarnings({"unchecked", "rawtypes"})
     protected void storeEntity(Entity entity) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         net.minecraft.nbt.CompoundTag compoundTag = new net.minecraft.nbt.CompoundTag();
         entity.save(compoundTag);
-        entities.add((CompoundTag) adapter.toNative(compoundTag));
+        entities.add(FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(compoundTag)));
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         return this.entities;
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
-        for (CompoundTag tag : entities) {
+        for (FaweCompoundTag tag : entities) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -180,8 +176,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
-            for (int i = 0; i < 64; i++) {
+            if (PaperLib.isPaper()) {
-                biomes[layer][i] = palettedContainer.get(i);
+                for (int i = 0; i < 64; i++) {
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(
@@ -195,7 +201,7 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     @Override
     public BaseBlock getFullBlock(int x, int y, int z) {
         BlockState state = BlockTypesCache.states[get(x, y, z)];
-        return state.toBaseBlock(this, x, y, z);
+        return state.toBaseBlock((IBlocks) this, x, y, z);
     }
 
     @Override
@@ -225,6 +231,16 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
         return BlockTypesCache.states[get(x, y, z)];
     }
 
+    @Override
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
+        return tiles;
+    }
+
+    @Override
+    public @Nullable FaweCompoundTag tile(final int x, final int y, final int z) {
+        return tiles.get(BlockVector3.at(x, y, z));
+    }
+
     @Override
     public int getSkyLight(int x, int y, int z) {
         return 0;

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightPlatformAdapter.java

@@ -7,9 +7,10 @@ import com.fastasyncworldedit.bukkit.adapter.NMSAdapter;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.util.MathMan;
-import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.fastasyncworldedit.core.util.TaskManager;
+import com.mojang.datafixers.util.Either;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
@@ -76,6 +77,7 @@ import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.TimeUnit;
@@ -121,6 +123,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Field LEVEL_CHUNK_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -210,6 +214,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             } catch (NoSuchFieldException ignored) {
             }
             POST_CHUNK_REWRITE = chunkRewrite;
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {
@@ -232,15 +243,14 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     static boolean setSectionAtomic(
+            String worldName,
+            IntPair pair,
             LevelChunkSection[] sections,
             LevelChunkSection expected,
             LevelChunkSection value,
             int layer
     ) {
-        if (layer >= 0 && layer < sections.length) {
+        return NMSAdapter.setSectionAtomic(worldName, pair, sections, expected, value, layer);
-            return ReflectionUtils.compareAndSet(sections, expected, value, layer);
-        }
-        return false;
     }
 
     // There is no point in having a functional semaphore for paper servers.
@@ -338,7 +348,7 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     @SuppressWarnings("deprecation")
-    public static void sendChunk(Object chunk, ServerLevel nmsWorld, int chunkX, int chunkZ) {
+    public static void sendChunk(IntPair pair, ServerLevel nmsWorld, int chunkX, int chunkZ) {
         ChunkHolder chunkHolder = getPlayerChunk(nmsWorld, chunkX, chunkZ);
         if (chunkHolder == null) {
             return;
@@ -347,36 +357,42 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
         LevelChunk levelChunk;
         if (PaperLib.isPaper()) {
             // getChunkAtIfLoadedImmediately is paper only
-            levelChunk = nmsWorld
+            levelChunk = nmsWorld.getChunkSource().getChunkAtIfLoadedImmediately(chunkX, chunkZ);
-                    .getChunkSource()
-                    .getChunkAtIfLoadedImmediately(chunkX, chunkZ);
         } else {
-            levelChunk = chunkHolder.getTickingChunkFuture()
+            levelChunk = chunkHolder.getTickingChunkFuture().getNow(ChunkHolder.UNLOADED_LEVEL_CHUNK).orElse(null);
-                    .getNow(ChunkHolder.UNLOADED_LEVEL_CHUNK).orElse(null);
         }
         if (levelChunk == null) {
             return;
         }
+        StampLockHolder lockHolder = new StampLockHolder();
+        NMSAdapter.beginChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
+        if (lockHolder.chunkLock == null) {
+            return;
+        }
         MinecraftServer.getServer().execute(() -> {
-            ClientboundLevelChunkWithLightPacket packet;
+            try {
-            if (PaperLib.isPaper()) {
+                ClientboundLevelChunkWithLightPacket packet;
-                packet = new ClientboundLevelChunkWithLightPacket(
+                if (PaperLib.isPaper()) {
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null,
+                            null,
-                        false // last false is to not bother with x-ray
+                            null,
-                );
+                            false // last false is to not bother with x-ray
-            } else {
+                    );
-                // deprecated on paper - deprecation suppressed
+                } else {
-                packet = new ClientboundLevelChunkWithLightPacket(
+                    // deprecated on paper - deprecation suppressed
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null
+                            null,
-                );
+                            null
+                    );
+                }
+                nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
+            } finally {
+                NMSAdapter.endChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
             }
-            nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
         });
     }
 

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightStarlightRelighter.java

@@ -2,6 +2,7 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4;
 
 import com.fastasyncworldedit.bukkit.adapter.StarlightRelighter;
 import com.fastasyncworldedit.core.configuration.Settings;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.queue.IQueueExtent;
 import net.minecraft.server.level.ChunkMap;
 import net.minecraft.server.level.ServerLevel;
@@ -67,7 +68,7 @@ public class PaperweightStarlightRelighter extends StarlightRelighter<ServerLeve
             int x = pos.x;
             int z = pos.z;
             if (delay) { // we still need to send the block changes of that chunk
-                PaperweightPlatformAdapter.sendChunk(pos, serverLevel, x, z);
+                PaperweightPlatformAdapter.sendChunk(new IntPair(x, z), serverLevel, x, z);
             }
             serverLevel.getChunkSource().removeTicketAtLevel(FAWE_TICKET, pos, LIGHT_LEVEL, Unit.INSTANCE);
         }

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/regen/PaperweightRegen.java

@@ -4,166 +4,73 @@ import com.fastasyncworldedit.bukkit.adapter.Regenerator;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.queue.IChunkCache;
 import com.fastasyncworldedit.core.queue.IChunkGet;
-import com.fastasyncworldedit.core.util.TaskManager;
+import com.fastasyncworldedit.core.queue.implementation.chunk.ChunkCache;
 import com.google.common.collect.ImmutableList;
 import com.mojang.serialization.Lifecycle;
+import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4.PaperweightGetBlocks;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.io.file.SafeFiles;
 import com.sk89q.worldedit.world.RegenOptions;
-import it.unimi.dsi.fastutil.objects.Object2ObjectArrayMap;
 import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.dedicated.DedicatedServer;
-import net.minecraft.server.level.ChunkMap;
-import net.minecraft.server.level.ChunkTaskPriorityQueueSorter.Message;
-import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ThreadedLevelLightEngine;
 import net.minecraft.server.level.progress.ChunkProgressListener;
-import net.minecraft.util.thread.ProcessorHandle;
+import net.minecraft.util.ProgressListener;
-import net.minecraft.util.thread.ProcessorMailbox;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.LevelHeightAccessor;
 import net.minecraft.world.level.LevelSettings;
 import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.FixedBiomeSource;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
-import net.minecraft.world.level.chunk.LevelChunk;
-import net.minecraft.world.level.chunk.ProtoChunk;
-import net.minecraft.world.level.chunk.UpgradeData;
-import net.minecraft.world.level.chunk.status.ChunkStatus;
-import net.minecraft.world.level.chunk.status.WorldGenContext;
 import net.minecraft.world.level.dimension.LevelStem;
-import net.minecraft.world.level.levelgen.FlatLevelSource;
 import net.minecraft.world.level.levelgen.NoiseBasedChunkGenerator;
-import net.minecraft.world.level.levelgen.NoiseGeneratorSettings;
 import net.minecraft.world.level.levelgen.WorldOptions;
-import net.minecraft.world.level.levelgen.blending.BlendingData;
-import net.minecraft.world.level.levelgen.flat.FlatLevelGeneratorSettings;
-import net.minecraft.world.level.levelgen.structure.placement.ConcentricRingsStructurePlacement;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
 import net.minecraft.world.level.storage.LevelStorageSource;
 import net.minecraft.world.level.storage.PrimaryLevelData;
-import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
-import org.bukkit.Chunk;
+import org.bukkit.World;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.CraftWorld;
-import org.bukkit.craftbukkit.generator.CustomChunkGenerator;
 import org.bukkit.generator.BiomeProvider;
-import org.bukkit.generator.BlockPopulator;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
-import javax.annotation.Nullable;
 import java.lang.reflect.Field;
 import java.nio.file.Path;
-import java.util.Collections;
-import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.OptionalLong;
-import java.util.Random;
-import java.util.concurrent.CompletableFuture;
 import java.util.function.BooleanSupplier;
 import java.util.function.Supplier;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
-public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, LevelChunk, PaperweightRegen.ChunkStatusWrap> {
+public class PaperweightRegen extends Regenerator {
-
-    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Field serverWorldsField;
     private static final Field paperConfigField;
-    private static final Field flatBedrockField;
-    private static final Field generatorSettingFlatField;
     private static final Field generatorSettingBaseSupplierField;
-    private static final Field delegateField;
-    private static final Field chunkSourceField;
-    private static final Field generatorStructureStateField;
-    private static final Field ringPositionsField;
-    private static final Field hasGeneratedPositionsField;
 
-    //list of chunk stati in correct order without FULL
-    private static final Map<ChunkStatus, Concurrency> chunkStati = new LinkedHashMap<>();
 
     static {
-        chunkStati.put(ChunkStatus.EMPTY, Concurrency.FULL);   // empty: radius -1, does nothing
-        chunkStati.put(ChunkStatus.STRUCTURE_STARTS, Concurrency.NONE);   // structure starts: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.STRUCTURE_REFERENCES,
-                Concurrency.NONE
-        );   // structure refs: radius 8, but only writes to current chunk
-        chunkStati.put(ChunkStatus.BIOMES, Concurrency.NONE);   // biomes: radius 0
-        chunkStati.put(ChunkStatus.NOISE, Concurrency.RADIUS); // noise: radius 8
-        chunkStati.put(ChunkStatus.SURFACE, Concurrency.NONE);   // surface: radius 0, requires NONE
-        chunkStati.put(ChunkStatus.CARVERS, Concurrency.NONE);   // carvers: radius 0, but RADIUS and FULL change results
-        chunkStati.put(ChunkStatus.FEATURES, Concurrency.NONE);   // features: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.INITIALIZE_LIGHT,
-                Concurrency.FULL
-        ); // initialize_light: radius 0
-        chunkStati.put(
-                ChunkStatus.LIGHT,
-                Concurrency.FULL
-        );   // light: radius 1, but no writes to other chunks, only current chunk
-        chunkStati.put(ChunkStatus.SPAWN, Concurrency.NONE);   // spawn: radius 0
-
         try {
             serverWorldsField = CraftServer.class.getDeclaredField("worlds");
             serverWorldsField.setAccessible(true);
 
             Field tmpPaperConfigField;
-            Field tmpFlatBedrockField;
             try { //only present on paper
                 tmpPaperConfigField = Level.class.getDeclaredField("paperConfig");
                 tmpPaperConfigField.setAccessible(true);
-
-                tmpFlatBedrockField = tmpPaperConfigField.getType().getDeclaredField("generateFlatBedrock");
-                tmpFlatBedrockField.setAccessible(true);
             } catch (Exception e) {
                 tmpPaperConfigField = null;
-                tmpFlatBedrockField = null;
             }
             paperConfigField = tmpPaperConfigField;
-            flatBedrockField = tmpFlatBedrockField;
 
             generatorSettingBaseSupplierField = NoiseBasedChunkGenerator.class.getDeclaredField(Refraction.pickName(
                     "settings", "e"));
             generatorSettingBaseSupplierField.setAccessible(true);
-
-            generatorSettingFlatField = FlatLevelSource.class.getDeclaredField(Refraction.pickName("settings", "d"));
-            generatorSettingFlatField.setAccessible(true);
-
-            delegateField = CustomChunkGenerator.class.getDeclaredField("delegate");
-            delegateField.setAccessible(true);
-
-            chunkSourceField = ServerLevel.class.getDeclaredField(Refraction.pickName("chunkSource", "I"));
-            chunkSourceField.setAccessible(true);
-
-            generatorStructureStateField = ChunkMap.class.getDeclaredField(Refraction.pickName("chunkGeneratorState", "v"));
-            generatorStructureStateField.setAccessible(true);
-
-            ringPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(Refraction.pickName("ringPositions", "g"));
-            ringPositionsField.setAccessible(true);
-
-            hasGeneratedPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(
-                    Refraction.pickName("hasGeneratedPositions", "h")
-            );
-            hasGeneratedPositionsField.setAccessible(true);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -171,44 +78,37 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     //runtime
     private ServerLevel originalServerWorld;
-    private ServerChunkCache originalChunkProvider;
     private ServerLevel freshWorld;
-    private ServerChunkCache freshChunkProvider;
     private LevelStorageSource.LevelStorageAccess session;
-    private StructureTemplateManager structureTemplateManager;
-    private ThreadedLevelLightEngine threadedLevelLightEngine;
-    private ChunkGenerator chunkGenerator;
-    private WorldGenContext worldGenContext;
 
     private Path tempDir;
 
-    private boolean generateFlatBedrock = false;
+    public PaperweightRegen(
-
+            World originalBukkitWorld,
-    public PaperweightRegen(org.bukkit.World originalBukkitWorld, Region region, Extent target, RegenOptions options) {
+            Region region,
+            Extent target,
+            RegenOptions options
+    ) {
         super(originalBukkitWorld, region, target, options);
     }
 
+    @Override
+    protected void runTasks(final BooleanSupplier shouldKeepTicking) {
+        while (shouldKeepTicking.getAsBoolean()) {
+            if (!this.freshWorld.getChunkSource().pollTask()) {
+                return;
+            }
+        }
+    }
+
     @Override
     protected boolean prepare() {
         this.originalServerWorld = ((CraftWorld) originalBukkitWorld).getHandle();
-        originalChunkProvider = originalServerWorld.getChunkSource();
-
-        //flat bedrock? (only on paper)
-        if (paperConfigField != null) {
-            try {
-                generateFlatBedrock = flatBedrockField.getBoolean(paperConfigField.get(originalServerWorld));
-            } catch (Exception ignored) {
-            }
-        }
-
         seed = options.getSeed().orElse(originalServerWorld.getSeed());
-        chunkStati.forEach((s, c) -> super.chunkStatuses.put(new ChunkStatusWrap(s), c));
-
         return true;
     }
 
     @Override
-    @SuppressWarnings("unchecked")
     protected boolean initNewWorld() throws Exception {
         //world folder
         tempDir = java.nio.file.Files.createTempDirectory("FastAsyncWorldEditWorldGen");
@@ -254,8 +154,10 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                 session,
                 newWorldData,
                 originalServerWorld.dimension(),
-                DedicatedServer.getServer().registryAccess().registry(Registries.LEVEL_STEM).orElseThrow()
+                new LevelStem(
-                        .getOrThrow(levelStemResourceKey),
+                        originalServerWorld.dimensionTypeRegistration(),
+                        originalServerWorld.getChunkSource().getGenerator()
+                ),
                 new RegenNoOpWorldLoadListener(),
                 originalServerWorld.isDebug(),
                 seed,
@@ -272,20 +174,32 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                             WorldEditPlugin.getInstance().getBukkitImplAdapter().getInternalBiomeId(options.getBiomeType())
                     ) : null;
 
-            @Override
-            public void tick(@NotNull BooleanSupplier shouldKeepTicking) { //no ticking
-            }
-
             @Override
             public @NotNull Holder<Biome> getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
                 if (options.hasBiomeType()) {
                     return singleBiome;
                 }
-                return PaperweightRegen.this.chunkGenerator.getBiomeSource().getNoiseBiome(
+                return super.getUncachedNoiseBiome(biomeX, biomeY, biomeZ);
-                        biomeX, biomeY, biomeZ, getChunkSource().randomState().sampler()
-                );
             }
 
+            @Override
+            public void save(
+                    @org.jetbrains.annotations.Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled
+            ) {
+                // noop, spigot
+            }
+
+            @Override
+            public void save(
+                    @Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled,
+                    final boolean close
+            ) {
+                // noop, paper
+            }
         }).get();
         freshWorld.noSave = true;
         removeWorldFromWorldsMap();
@@ -293,93 +207,6 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         if (paperConfigField != null) {
             paperConfigField.set(freshWorld, originalServerWorld.paperConfig());
         }
-
-        ChunkGenerator originalGenerator = originalChunkProvider.getGenerator();
-        if (originalGenerator instanceof FlatLevelSource flatLevelSource) {
-            FlatLevelGeneratorSettings generatorSettingFlat = flatLevelSource.settings();
-            chunkGenerator = new FlatLevelSource(generatorSettingFlat);
-        } else if (originalGenerator instanceof NoiseBasedChunkGenerator noiseBasedChunkGenerator) {
-            Holder<NoiseGeneratorSettings> generatorSettingBaseSupplier = (Holder<NoiseGeneratorSettings>)
-                    generatorSettingBaseSupplierField.get(noiseBasedChunkGenerator);
-            BiomeSource biomeSource;
-            if (options.hasBiomeType()) {
-                biomeSource = new FixedBiomeSource(
-                        DedicatedServer.getServer().registryAccess()
-                                .registryOrThrow(BIOME).asHolderIdMap().byIdOrThrow(
-                                        WorldEditPlugin.getInstance().getBukkitImplAdapter().getInternalBiomeId(options.getBiomeType())
-                                )
-                );
-            } else {
-                biomeSource = originalGenerator.getBiomeSource();
-            }
-            chunkGenerator = new NoiseBasedChunkGenerator(
-                    biomeSource,
-                    generatorSettingBaseSupplier
-            );
-        } else if (originalGenerator instanceof CustomChunkGenerator customChunkGenerator) {
-            chunkGenerator = customChunkGenerator.getDelegate();
-        } else {
-            LOGGER.error("Unsupported generator type {}", originalGenerator.getClass().getName());
-            return false;
-        }
-        if (generator != null) {
-            chunkGenerator = new CustomChunkGenerator(freshWorld, chunkGenerator, generator);
-            generateConcurrent = generator.isParallelCapable();
-        }
-//        chunkGenerator.conf = freshWorld.spigotConfig; - Does not exist anymore, may need to be re-addressed
-
-        freshChunkProvider = new ServerChunkCache(
-                freshWorld,
-                session,
-                server.getFixerUpper(),
-                server.getStructureManager(),
-                server.executor,
-                chunkGenerator,
-                freshWorld.spigotConfig.viewDistance,
-                freshWorld.spigotConfig.simulationDistance,
-                server.forceSynchronousWrites(),
-                new RegenNoOpWorldLoadListener(),
-                (chunkCoordIntPair, state) -> {
-                },
-                () -> server.overworld().getDataStorage()
-        ) {
-            // redirect to LevelChunks created in #createChunks
-            @Override
-            public ChunkAccess getChunk(int x, int z, @NotNull ChunkStatus chunkstatus, boolean create) {
-                ChunkAccess chunkAccess = getChunkAt(x, z);
-                if (chunkAccess == null && create) {
-                    chunkAccess = createChunk(getProtoChunkAt(x, z));
-                }
-                return chunkAccess;
-            }
-        };
-
-        if (seed == originalOpts.seed() && !options.hasBiomeType()) {
-            // Optimisation for needless ring position calculation when the seed and biome is the same.
-            ChunkGeneratorStructureState state = (ChunkGeneratorStructureState) generatorStructureStateField.get(
-                    originalChunkProvider.chunkMap);
-            boolean hasGeneratedPositions = hasGeneratedPositionsField.getBoolean(state);
-            if (hasGeneratedPositions) {
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> origPositions =
-                        (Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>>) ringPositionsField.get(state);
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> copy = new Object2ObjectArrayMap<>(
-                        origPositions);
-                ChunkGeneratorStructureState newState = (ChunkGeneratorStructureState) generatorStructureStateField.get(
-                        freshChunkProvider.chunkMap);
-                ringPositionsField.set(newState, copy);
-                hasGeneratedPositionsField.setBoolean(newState, true);
-            }
-        }
-
-
-        chunkSourceField.set(freshWorld, freshChunkProvider);
-        //let's start then
-        structureTemplateManager = server.getStructureManager();
-        threadedLevelLightEngine = new NoOpLightEngine(freshChunkProvider);
-
-        this.worldGenContext = new WorldGenContext(freshWorld, chunkGenerator, structureTemplateManager,
-                threadedLevelLightEngine
-        );
         return true;
     }
 
@@ -394,7 +221,8 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         try {
             Fawe.instance().getQueueHandler().sync(() -> {
                 try {
-                    freshChunkProvider.close(false);
+                    freshWorld.getChunkSource().getDataStorage().cache.clear();
+                    freshWorld.getChunkSource().close(false);
                 } catch (Exception e) {
                     throw new RuntimeException(e);
                 }
@@ -415,50 +243,9 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         }
     }
 
-    @Override
-    protected ProtoChunk createProtoChunk(int x, int z) {
-        return new FastProtoChunk(new ChunkPos(x, z), UpgradeData.EMPTY, freshWorld,
-                this.freshWorld.registryAccess().registryOrThrow(BIOME), null
-        );
-    }
-
-    @Override
-    protected LevelChunk createChunk(ProtoChunk protoChunk) {
-        return new LevelChunk(
-                freshWorld,
-                protoChunk,
-                null // we don't want to add entities
-        );
-    }
-
-    @Override
-    protected ChunkStatusWrap getFullChunkStatus() {
-        return new ChunkStatusWrap(ChunkStatus.FULL);
-    }
-
-    @Override
-    protected List<BlockPopulator> getBlockPopulators() {
-        return originalServerWorld.getWorld().getPopulators();
-    }
-
-    @Override
-    protected void populate(LevelChunk levelChunk, Random random, BlockPopulator blockPopulator) {
-        // BlockPopulator#populate has to be called synchronously for TileEntity access
-        TaskManager.taskManager().task(() -> {
-            final CraftWorld world = freshWorld.getWorld();
-            final Chunk chunk = world.getChunkAt(levelChunk.locX, levelChunk.locZ);
-            blockPopulator.populate(world, random, chunk);
-        });
-    }
-
     @Override
     protected IChunkCache<IChunkGet> initSourceQueueCache() {
-        return (chunkX, chunkZ) -> new PaperweightGetBlocks(freshWorld, chunkX, chunkZ) {
+        return new ChunkCache<>(BukkitAdapter.adapt(freshWorld.getWorld()));
-            @Override
-            public LevelChunk ensureLoaded(ServerLevel nmsWorld, int x, int z) {
-                return getChunkAt(x, z);
-            }
-        };
     }
 
     //util
@@ -512,83 +299,4 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     }
 
-    private class FastProtoChunk extends ProtoChunk {
-
-        public FastProtoChunk(
-                final ChunkPos pos,
-                final UpgradeData upgradeData,
-                final LevelHeightAccessor world,
-                final Registry<Biome> biomeRegistry,
-                @Nullable final BlendingData blendingData
-        ) {
-            super(pos, upgradeData, world, biomeRegistry, blendingData);
-        }
-
-        // avoid warning on paper
-
-        @SuppressWarnings("unused") // compatibility with spigot
-        public boolean generateFlatBedrock() {
-            return generateFlatBedrock;
-        }
-
-        // no one will ever see the entities!
-        @Override
-        public @NotNull List<CompoundTag> getEntities() {
-            return Collections.emptyList();
-        }
-
-    }
-
-    protected class ChunkStatusWrap extends ChunkStatusWrapper<ChunkAccess> {
-
-        private final ChunkStatus chunkStatus;
-
-        public ChunkStatusWrap(ChunkStatus chunkStatus) {
-            this.chunkStatus = chunkStatus;
-        }
-
-        @Override
-        public int requiredNeighborChunkRadius() {
-            return chunkStatus.getRange();
-        }
-
-        @Override
-        public String name() {
-            return chunkStatus.toString();
-        }
-
-        @Override
-        public CompletableFuture<?> processChunk(List<ChunkAccess> accessibleChunks) {
-            return chunkStatus.generate(
-                    worldGenContext,
-                    Runnable::run,
-                    CompletableFuture::completedFuture,
-                    accessibleChunks
-            );
-        }
-
-    }
-
-    /**
-     * A light engine that does nothing. As light is calculated after pasting anyway, we can avoid
-     * work this way.
-     */
-    static class NoOpLightEngine extends ThreadedLevelLightEngine {
-
-        private static final ProcessorMailbox<Runnable> MAILBOX = ProcessorMailbox.create(task -> {
-        }, "fawe-no-op");
-        private static final ProcessorHandle<Message<Runnable>> HANDLE = ProcessorHandle.of("fawe-no-op", m -> {
-        });
-
-        public NoOpLightEngine(final ServerChunkCache chunkProvider) {
-            super(chunkProvider, chunkProvider.chunkMap, false, MAILBOX, HANDLE);
-        }
-
-        @Override
-        public @NotNull CompletableFuture<ChunkAccess> lightChunk(final @NotNull ChunkAccess chunk, final boolean excludeBlocks) {
-            return CompletableFuture.completedFuture(chunk);
-        }
-
-    }
-
 }

worldedit-bukkit/adapters/adapter-1_21/build.gradle.kts

@@ -12,6 +12,6 @@ repositories {
 
 dependencies {
     // url=https://repo.papermc.io/service/rest/repository/browse/maven-public/io/papermc/paper/dev-bundle/1.21.1-R0.1-SNAPSHOT/
-    the<PaperweightUserDependenciesExtension>().paperDevBundle("1.21.1-R0.1-20240811.223934-9")
+    the<PaperweightUserDependenciesExtension>().paperDevBundle("1.21.1-R0.1-20241012.212042-119")
     compileOnly(libs.paperlib)
 }

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightBlockMaterial.java

@@ -1,11 +1,8 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1;
 
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
 import net.minecraft.core.BlockPos;
-import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.world.level.EmptyBlockGetter;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.EntityBlock;
@@ -15,6 +12,8 @@ import net.minecraft.world.level.material.Fluids;
 import net.minecraft.world.level.material.PushReaction;
 import org.bukkit.craftbukkit.block.data.CraftBlockData;
 
+import javax.annotation.Nullable;
+
 public class PaperweightBlockMaterial implements BlockMaterial {
 
     private final Block block;
@@ -22,7 +21,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     private final CraftBlockData craftBlockData;
     private final org.bukkit.Material craftMaterial;
     private final int opacity;
-    private final CompoundTag tile;
+    private final FaweCompoundTag tile;
 
     public PaperweightBlockMaterial(Block block) {
         this(block, block.defaultBlockState());
@@ -38,9 +37,9 @@ public class PaperweightBlockMaterial implements BlockMaterial {
                 BlockPos.ZERO,
                 blockState
         );
-        tile = tileEntity == null ? null : new PaperweightLazyCompoundTag(
+        tile = tileEntity == null
-                Suppliers.memoize(() -> tileEntity.saveWithId(DedicatedServer.getServer().registryAccess()))
+                ? null
-        );
+                : PaperweightGetBlocks.NMS_TO_TILE.apply(tileEntity);
     }
 
     public Block getBlock() {
@@ -126,9 +125,10 @@ public class PaperweightBlockMaterial implements BlockMaterial {
         return blockState.isRandomlyTicking();
     }
 
+    @SuppressWarnings("deprecation")
     @Override
     public boolean isMovementBlocker() {
-        return craftMaterial.isSolid();
+        return blockState.blocksMotion();
     }
 
     @Override
@@ -163,7 +163,7 @@ public class PaperweightBlockMaterial implements BlockMaterial {
     }
 
     @Override
-    public CompoundTag getDefaultTile() {
+    public @Nullable FaweCompoundTag defaultTile() {
         return tile;
     }
 

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightFaweAdapter.java

@@ -5,6 +5,7 @@ import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.packet.ChunkPacket;
@@ -18,6 +19,7 @@ import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.nbt.PaperweightLazyCompoundTag;
+import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.regen.PaperweightRegen;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.internal.block.BlockStateIdAccess;
@@ -102,6 +104,7 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.OptionalInt;
 import java.util.Set;
+import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -137,6 +140,12 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         this.parent = new com.sk89q.worldedit.bukkit.adapter.ext.fawe.v1_21_R1.PaperweightAdapter();
     }
 
+    public Function<BlockEntity, FaweCompoundTag> blockEntityToCompoundTag() {
+        return blockEntity -> FaweCompoundTag.of(
+                () -> (LinCompoundTag) toNativeLin(blockEntity.saveWithId(DedicatedServer.getServer().registryAccess()))
+        );
+    }
+
     @Nullable
     private static String getEntityId(Entity entity) {
         ResourceLocation resourceLocation = net.minecraft.world.entity.EntityType.getKey(entity.getType());
@@ -557,7 +566,7 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
 
     @Override
     public boolean regenerate(org.bukkit.World bukkitWorld, Region region, Extent target, RegenOptions options) throws Exception {
-        throw new UnsupportedOperationException("Regen support for 1.21 not yet implemented.");
+        return new PaperweightRegen(bukkitWorld, region, target, options).regenerate();
     }
 
     @Override

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightGetBlocks.java

@@ -7,20 +7,17 @@ import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.queue.implementation.QueueHandler;
 import com.fastasyncworldedit.core.queue.implementation.blocks.CharGetBlocks;
 import com.fastasyncworldedit.core.util.MathMan;
+import com.fastasyncworldedit.core.util.NbtUtils;
 import com.fastasyncworldedit.core.util.collection.AdaptedMap;
-import com.google.common.base.Suppliers;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.jnbt.ListTag;
-import com.sk89q.jnbt.StringTag;
-import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -34,6 +31,7 @@ import net.minecraft.core.Holder;
 import net.minecraft.core.IdMap;
 import net.minecraft.core.Registry;
 import net.minecraft.core.SectionPos;
+import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.IntTag;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.server.level.ServerLevel;
@@ -62,11 +60,19 @@ import org.bukkit.World;
 import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.craftbukkit.block.CraftBlock;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.enginehub.linbus.tree.LinCompoundTag;
+import org.enginehub.linbus.tree.LinDoubleTag;
+import org.enginehub.linbus.tree.LinFloatTag;
+import org.enginehub.linbus.tree.LinListTag;
+import org.enginehub.linbus.tree.LinStringTag;
+import org.enginehub.linbus.tree.LinTagType;
 
 import javax.annotation.Nonnull;
-import java.util.AbstractSet;
+import javax.annotation.Nullable;
+import java.util.AbstractCollection;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -83,7 +89,6 @@ import java.util.concurrent.locks.ReadWriteLock;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.function.Function;
-import java.util.stream.Collectors;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
@@ -92,9 +97,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Function<BlockPos, BlockVector3> posNms2We = v -> BlockVector3.at(v.getX(), v.getY(), v.getZ());
-    private static final Function<BlockEntity, CompoundTag> nmsTile2We = tileEntity -> new PaperweightLazyCompoundTag(
+    public static final Function<BlockEntity, FaweCompoundTag> NMS_TO_TILE = ((PaperweightFaweAdapter) WorldEditPlugin
-            Suppliers.memoize(() -> tileEntity.saveWithId(DedicatedServer.getServer().registryAccess()))
+            .getInstance()
-    );
+            .getBukkitImplAdapter()).blockEntityToCompoundTag();
     private final PaperweightFaweAdapter adapter = ((PaperweightFaweAdapter) WorldEditPlugin
             .getInstance()
             .getBukkitImplAdapter());
@@ -103,6 +108,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final ServerLevel serverLevel;
     private final int chunkX;
     private final int chunkZ;
+    private final IntPair chunkPos;
     private final int minHeight;
     private final int maxHeight;
     private final int minSectionPosition;
@@ -137,6 +143,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         this.blockLight = new DataLayer[getSectionCount()];
         this.biomeRegistry = serverLevel.registryAccess().registryOrThrow(BIOME);
         this.biomeHolderIdMap = biomeRegistry.asHolderIdMap();
+        this.chunkPos = new IntPair(chunkX, chunkZ);
     }
 
     public int getChunkX() {
@@ -258,23 +265,24 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getTile(int x, int y, int z) {
+    public FaweCompoundTag tile(final int x, final int y, final int z) {
         BlockEntity blockEntity = getChunk().getBlockEntity(new BlockPos((x & 15) + (
                 chunkX << 4), y, (z & 15) + (
                 chunkZ << 4)));
         if (blockEntity == null) {
             return null;
         }
-        return new PaperweightLazyCompoundTag(Suppliers.memoize(() -> blockEntity.saveWithId(DedicatedServer.getServer().registryAccess())));
+        return NMS_TO_TILE.apply(blockEntity);
+
     }
 
     @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
         Map<BlockPos, BlockEntity> nmsTiles = getChunk().getBlockEntities();
         if (nmsTiles.isEmpty()) {
             return Collections.emptyMap();
         }
-        return AdaptedMap.immutable(nmsTiles, posNms2We, nmsTile2We);
+        return AdaptedMap.immutable(nmsTiles, posNms2We, NMS_TO_TILE);
     }
 
     @Override
@@ -337,7 +345,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         Entity entity = null;
@@ -349,10 +357,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         }
         if (entity != null) {
             org.bukkit.entity.Entity bukkitEnt = entity.getBukkitEntity();
-            return BukkitAdapter.adapt(bukkitEnt).getState().getNbtData();
+            return FaweCompoundTag.of(BukkitAdapter.adapt(bukkitEnt).getState().getNbt());
         }
-        for (CompoundTag tag : getEntities()) {
+        for (FaweCompoundTag tag : entities()) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -360,14 +368,14 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         ensureLoaded(serverLevel, chunkX, chunkZ);
         List<Entity> entities = PaperweightPlatformAdapter.getEntities(getChunk());
         if (entities.isEmpty()) {
-            return Collections.emptySet();
+            return Collections.emptyList();
         }
         int size = entities.size();
-        return new AbstractSet<>() {
+        return new AbstractCollection<>() {
             @Override
             public int size() {
                 return size;
@@ -380,10 +388,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Override
             public boolean contains(Object get) {
-                if (!(get instanceof CompoundTag getTag)) {
+                if (!(get instanceof FaweCompoundTag getTag)) {
                     return false;
                 }
-                UUID getUUID = getTag.getUUID();
+                UUID getUUID = NbtUtils.uuid(getTag);
                 for (Entity entity : entities) {
                     UUID uuid = entity.getUUID();
                     if (uuid.equals(getUUID)) {
@@ -395,15 +403,16 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
 
             @Nonnull
             @Override
-            public Iterator<CompoundTag> iterator() {
+            public Iterator<FaweCompoundTag> iterator() {
-                Iterable<CompoundTag> result = entities.stream().map(input -> {
+                Iterable<FaweCompoundTag> result = entities.stream().map(input -> {
-                    net.minecraft.nbt.CompoundTag tag = new net.minecraft.nbt.CompoundTag();
+                    CompoundTag tag = new CompoundTag();
                     input.save(tag);
-                    return (CompoundTag) adapter.toNative(tag);
+                    return FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(tag));
-                }).collect(Collectors.toList());
+                })::iterator;
                 return result.iterator();
             }
         };
+
     }
 
     private void removeEntity(Entity entity) {
@@ -421,7 +430,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             throw new IllegalStateException("Attempted to call chunk GET but chunk was not call-locked.");
         }
         forceLoadSections = false;
-        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(levelChunk) : null;
+        LevelChunk nmsChunk = ensureLoaded(serverLevel, chunkX, chunkZ);
+        PaperweightGetBlocks_Copy copy = createCopy ? new PaperweightGetBlocks_Copy(nmsChunk) : null;
         if (createCopy) {
             if (copies.containsKey(copyKey)) {
                 throw new IllegalStateException("Copy key already used.");
@@ -429,9 +439,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
             copies.put(copyKey, copy);
         }
         try {
-            ServerLevel nmsWorld = serverLevel;
-            LevelChunk nmsChunk = ensureLoaded(nmsWorld, chunkX, chunkZ);
-
             // Remove existing tiles. Create a copy so that we can remove blocks
             Map<BlockPos, BlockEntity> chunkTiles = new HashMap<>(nmsChunk.getBlockEntities());
             List<BlockEntity> beacons = null;
@@ -503,6 +510,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                             biomeData
                                     );
                                     if (PaperweightPlatformAdapter.setSectionAtomic(
+                                            serverLevel.getWorld().getName(),
+                                            chunkPos,
                                             levelChunkSections,
                                             null,
                                             newSection,
@@ -577,6 +586,8 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeData
                             );
                             if (PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
                                     levelChunkSections,
                                     null,
                                     newSection,
@@ -638,7 +649,11 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                                     biomeRegistry,
                                     biomeData != null ? biomeData : (PalettedContainer<Holder<Biome>>) existingSection.getBiomes()
                             );
-                            if (!PaperweightPlatformAdapter.setSectionAtomic(levelChunkSections, existingSection,
+                            if (!PaperweightPlatformAdapter.setSectionAtomic(
+                                    serverLevel.getWorld().getName(),
+                                    chunkPos,
+                                    levelChunkSections,
+                                    existingSection,
                                     newSection,
                                     getSectionIndex
                             )) {
@@ -710,7 +725,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         }
                         if (Settings.settings().EXPERIMENTAL.REMOVE_ENTITY_FROM_WORLD_ON_CHUNK_FAIL) {
                             for (UUID uuid : entityRemoves) {
-                                Entity entity = nmsWorld.getEntities().get(uuid);
+                                Entity entity = serverLevel.getEntities().get(uuid);
                                 if (entity != null) {
                                     removeEntity(entity);
                                 }
@@ -722,48 +737,47 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     };
                 }
 
-                Set<CompoundTag> entities = set.getEntities();
+                Collection<FaweCompoundTag> entities = set.entities();
                 if (entities != null && !entities.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[2];
                     }
 
                     syncTasks[1] = () -> {
-                        Iterator<CompoundTag> iterator = entities.iterator();
+                        Iterator<FaweCompoundTag> iterator = entities.iterator();
                         while (iterator.hasNext()) {
-                            final CompoundTag nativeTag = iterator.next();
+                            final FaweCompoundTag nativeTag = iterator.next();
-                            final Map<String, Tag<?, ?>> entityTagMap = nativeTag.getValue();
+                            final LinCompoundTag linTag = nativeTag.linTag();
-                            final StringTag idTag = (StringTag) entityTagMap.get("Id");
+                            final LinStringTag idTag = linTag.findTag("Id", LinTagType.stringTag());
-                            final ListTag posTag = (ListTag) entityTagMap.get("Pos");
+                            final LinListTag<LinDoubleTag> posTag = linTag.findListTag("Pos", LinTagType.doubleTag());
-                            final ListTag rotTag = (ListTag) entityTagMap.get("Rotation");
+                            final LinListTag<LinFloatTag> rotTag = linTag.findListTag("Rotation", LinTagType.floatTag());
                             if (idTag == null || posTag == null || rotTag == null) {
                                 LOGGER.error("Unknown entity tag: {}", nativeTag);
                                 continue;
                             }
-                            final double x = posTag.getDouble(0);
+                            final double x = posTag.get(0).valueAsDouble();
-                            final double y = posTag.getDouble(1);
+                            final double y = posTag.get(1).valueAsDouble();
-                            final double z = posTag.getDouble(2);
+                            final double z = posTag.get(2).valueAsDouble();
-                            final float yaw = rotTag.getFloat(0);
+                            final float yaw = rotTag.get(0).valueAsFloat();
-                            final float pitch = rotTag.getFloat(1);
+                            final float pitch = rotTag.get(1).valueAsFloat();
-                            final String id = idTag.getValue();
+                            final String id = idTag.value();
 
                             EntityType<?> type = EntityType.byString(id).orElse(null);
                             if (type != null) {
-                                Entity entity = type.create(nmsWorld);
+                                Entity entity = type.create(serverLevel);
                                 if (entity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final CompoundTag tag = (CompoundTag) adapter.fromNativeLin(linTag);
-                                            nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
                                     entity.load(tag);
                                     entity.absMoveTo(x, y, z, yaw, pitch);
-                                    entity.setUUID(nativeTag.getUUID());
+                                    entity.setUUID(NbtUtils.uuid(nativeTag));
-                                    if (!nmsWorld.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
+                                    if (!serverLevel.addFreshEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM)) {
                                         LOGGER.warn(
                                                 "Error creating entity of type `{}` in world `{}` at location `{},{},{}`",
                                                 id,
-                                                nmsWorld.getWorld().getName(),
+                                                serverLevel.getWorld().getName(),
                                                 x,
                                                 y,
                                                 z
@@ -778,30 +792,29 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                 }
 
                 // set tiles
-                Map<BlockVector3, CompoundTag> tiles = set.getTiles();
+                Map<BlockVector3, FaweCompoundTag> tiles = set.tiles();
                 if (tiles != null && !tiles.isEmpty()) {
                     if (syncTasks == null) {
                         syncTasks = new Runnable[1];
                     }
 
                     syncTasks[0] = () -> {
-                        for (final Map.Entry<BlockVector3, CompoundTag> entry : tiles.entrySet()) {
+                        for (final Map.Entry<BlockVector3, FaweCompoundTag> entry : tiles.entrySet()) {
-                            final CompoundTag nativeTag = entry.getValue();
+                            final FaweCompoundTag nativeTag = entry.getValue();
                             final BlockVector3 blockHash = entry.getKey();
                             final int x = blockHash.x() + bx;
                             final int y = blockHash.y();
                             final int z = blockHash.z() + bz;
                             final BlockPos pos = new BlockPos(x, y, z);
 
-                            synchronized (nmsWorld) {
+                            synchronized (serverLevel) {
-                                BlockEntity tileEntity = nmsWorld.getBlockEntity(pos);
+                                BlockEntity tileEntity = serverLevel.getBlockEntity(pos);
                                 if (tileEntity == null || tileEntity.isRemoved()) {
-                                    nmsWorld.removeBlockEntity(pos);
+                                    serverLevel.removeBlockEntity(pos);
-                                    tileEntity = nmsWorld.getBlockEntity(pos);
+                                    tileEntity = serverLevel.getBlockEntity(pos);
                                 }
                                 if (tileEntity != null) {
-                                    final net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) adapter.fromNative(
+                                    final CompoundTag tag = (CompoundTag) adapter.fromNativeLin(nativeTag.linTag());
-                                            nativeTag);
                                     tag.put("x", IntTag.valueOf(x));
                                     tag.put("y", IntTag.valueOf(y));
                                     tag.put("z", IntTag.valueOf(z));
@@ -817,7 +830,6 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                     callback = null;
                 } else {
                     int finalMask = bitMask != 0 ? bitMask : lightUpdate ? set.getBitMask() : 0;
-                    boolean finalLightUpdate = lightUpdate;
                     callback = () -> {
                         // Set Modified
                         nmsChunk.setLightCorrect(true); // Set Modified
@@ -923,7 +935,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     @Override
     public void send() {
         synchronized (sendLock) {
-            PaperweightPlatformAdapter.sendChunk(this, serverLevel, chunkX, chunkZ);
+            PaperweightPlatformAdapter.sendChunk(new IntPair(chunkX, chunkZ), serverLevel, chunkX, chunkZ);
         }
     }
 

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightGetBlocks_Copy.java

@@ -1,21 +1,22 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1;
 
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBlocks;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
-import com.google.common.base.Suppliers;
+import com.fastasyncworldedit.core.util.NbtUtils;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.nbt.PaperweightLazyCompoundTag;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
+import net.minecraft.nbt.Tag;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
@@ -25,9 +26,11 @@ import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.PalettedContainer;
 import net.minecraft.world.level.chunk.PalettedContainerRO;
 import org.apache.logging.log4j.Logger;
+import org.enginehub.linbus.tree.LinCompoundTag;
 
 import javax.annotation.Nullable;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -39,8 +42,8 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
 
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
-    private final Map<BlockVector3, CompoundTag> tiles = new HashMap<>();
+    private final Map<BlockVector3, FaweCompoundTag> tiles = new HashMap<>();
-    private final Set<CompoundTag> entities = new HashSet<>();
+    private final Set<FaweCompoundTag> entities = new HashSet<>();
     private final char[][] blocks;
     private final int minHeight;
     private final int maxHeight;
@@ -57,44 +60,37 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     }
 
     protected void storeTile(BlockEntity blockEntity) {
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         tiles.put(
                 BlockVector3.at(
                         blockEntity.getBlockPos().getX(),
                         blockEntity.getBlockPos().getY(),
                         blockEntity.getBlockPos().getZ()
                 ),
-                new PaperweightLazyCompoundTag(Suppliers.memoize(() -> blockEntity.saveWithId(DedicatedServer.getServer().registryAccess())))
+                FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(blockEntity.saveWithId(DedicatedServer
+                        .getServer()
+                        .registryAccess())))
         );
     }
 
-    @Override
-    public Map<BlockVector3, CompoundTag> getTiles() {
-        return tiles;
-    }
-
-    @Override
-    @Nullable
-    public CompoundTag getTile(int x, int y, int z) {
-        return tiles.get(BlockVector3.at(x, y, z));
-    }
-
-    @SuppressWarnings({"unchecked", "rawtypes"})
     protected void storeEntity(Entity entity) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        @SuppressWarnings("unchecked")
+        BukkitImplAdapter<Tag> adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
         net.minecraft.nbt.CompoundTag compoundTag = new net.minecraft.nbt.CompoundTag();
         entity.save(compoundTag);
-        entities.add((CompoundTag) adapter.toNative(compoundTag));
+        entities.add(FaweCompoundTag.of((LinCompoundTag) adapter.toNativeLin(compoundTag)));
     }
 
     @Override
-    public Set<CompoundTag> getEntities() {
+    public Collection<FaweCompoundTag> entities() {
         return this.entities;
     }
 
     @Override
-    public CompoundTag getEntity(UUID uuid) {
+    public @Nullable FaweCompoundTag entity(final UUID uuid) {
-        for (CompoundTag tag : entities) {
+        for (FaweCompoundTag tag : entities) {
-            if (uuid.equals(tag.getUUID())) {
+            if (uuid.equals(NbtUtils.uuid(tag))) {
                 return tag;
             }
         }
@@ -180,8 +176,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
-            for (int i = 0; i < 64; i++) {
+            if (PaperLib.isPaper()) {
-                biomes[layer][i] = palettedContainer.get(i);
+                for (int i = 0; i < 64; i++) {
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(
@@ -195,7 +201,7 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
     @Override
     public BaseBlock getFullBlock(int x, int y, int z) {
         BlockState state = BlockTypesCache.states[get(x, y, z)];
-        return state.toBaseBlock(this, x, y, z);
+        return state.toBaseBlock((IBlocks) this, x, y, z);
     }
 
     @Override
@@ -225,6 +231,16 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
         return BlockTypesCache.states[get(x, y, z)];
     }
 
+    @Override
+    public Map<BlockVector3, FaweCompoundTag> tiles() {
+        return tiles;
+    }
+
+    @Override
+    public @Nullable FaweCompoundTag tile(final int x, final int y, final int z) {
+        return tiles.get(BlockVector3.at(x, y, z));
+    }
+
     @Override
     public int getSkyLight(int x, int y, int z) {
         return 0;

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightPlatformAdapter.java

@@ -8,9 +8,10 @@ import com.fastasyncworldedit.bukkit.adapter.NMSAdapter;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.math.BitArrayUnstretched;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.util.MathMan;
-import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.fastasyncworldedit.core.util.TaskManager;
+import com.mojang.datafixers.util.Either;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
@@ -31,7 +32,6 @@ import net.minecraft.server.level.ChunkMap;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.util.BitStorage;
-import net.minecraft.util.ExceptionCollector;
 import net.minecraft.util.SimpleBitStorage;
 import net.minecraft.util.ThreadingDetector;
 import net.minecraft.util.Unit;
@@ -76,6 +76,7 @@ import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.TimeUnit;
@@ -119,6 +120,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Method PAPER_CHUNK_GEN_ALL_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -195,6 +198,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
                 SERVER_LEVEL_ENTITY_MANAGER = ServerLevel.class.getDeclaredField(Refraction.pickName("entityManager", "N"));
                 SERVER_LEVEL_ENTITY_MANAGER.setAccessible(true);
             }
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {
@@ -217,15 +227,14 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     static boolean setSectionAtomic(
+            String worldName,
+            IntPair pair,
             LevelChunkSection[] sections,
             LevelChunkSection expected,
             LevelChunkSection value,
             int layer
     ) {
-        if (layer >= 0 && layer < sections.length) {
+        return NMSAdapter.setSectionAtomic(worldName, pair, sections, expected, value, layer);
-            return ReflectionUtils.compareAndSet(sections, expected, value, layer);
-        }
-        return false;
     }
 
     // There is no point in having a functional semaphore for paper servers.
@@ -323,7 +332,7 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     }
 
     @SuppressWarnings("deprecation")
-    public static void sendChunk(Object chunk, ServerLevel nmsWorld, int chunkX, int chunkZ) {
+    public static void sendChunk(IntPair pair, ServerLevel nmsWorld, int chunkX, int chunkZ) {
         ChunkHolder chunkHolder = getPlayerChunk(nmsWorld, chunkX, chunkZ);
         if (chunkHolder == null) {
             return;
@@ -332,36 +341,42 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
         LevelChunk levelChunk;
         if (PaperLib.isPaper()) {
             // getChunkAtIfLoadedImmediately is paper only
-            levelChunk = nmsWorld
+            levelChunk = nmsWorld.getChunkSource().getChunkAtIfLoadedImmediately(chunkX, chunkZ);
-                    .getChunkSource()
-                    .getChunkAtIfLoadedImmediately(chunkX, chunkZ);
         } else {
-            levelChunk = chunkHolder.getTickingChunkFuture()
+            levelChunk = chunkHolder.getTickingChunkFuture().getNow(ChunkHolder.UNLOADED_LEVEL_CHUNK).orElse(null);
-                    .getNow(ChunkHolder.UNLOADED_LEVEL_CHUNK).orElse(null);
         }
         if (levelChunk == null) {
             return;
         }
+        StampLockHolder lockHolder = new StampLockHolder();
+        NMSAdapter.beginChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
+        if (lockHolder.chunkLock == null) {
+            return;
+        }
         MinecraftServer.getServer().execute(() -> {
-            ClientboundLevelChunkWithLightPacket packet;
+            try {
-            if (PaperLib.isPaper()) {
+                ClientboundLevelChunkWithLightPacket packet;
-                packet = new ClientboundLevelChunkWithLightPacket(
+                if (PaperLib.isPaper()) {
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null,
+                            null,
-                        false // last false is to not bother with x-ray
+                            null,
-                );
+                            false // last false is to not bother with x-ray
-            } else {
+                    );
-                // deprecated on paper - deprecation suppressed
+                } else {
-                packet = new ClientboundLevelChunkWithLightPacket(
+                    // deprecated on paper - deprecation suppressed
-                        levelChunk,
+                    packet = new ClientboundLevelChunkWithLightPacket(
-                        nmsWorld.getChunkSource().getLightEngine(),
+                            levelChunk,
-                        null,
+                            nmsWorld.getChunkSource().getLightEngine(),
-                        null
+                            null,
-                );
+                            null
+                    );
+                }
+                nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
+            } finally {
+                NMSAdapter.endChunkPacketSend(nmsWorld.getWorld().getName(), pair, lockHolder);
             }
-            nearbyPlayers(nmsWorld, coordIntPair).forEach(p -> p.connection.send(packet));
         });
     }
 

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightStarlightRelighter.java

@@ -2,6 +2,7 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1;
 
 import com.fastasyncworldedit.bukkit.adapter.StarlightRelighter;
 import com.fastasyncworldedit.core.configuration.Settings;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.queue.IQueueExtent;
 import net.minecraft.server.level.ChunkMap;
 import net.minecraft.server.level.ServerLevel;
@@ -70,7 +71,7 @@ public class PaperweightStarlightRelighter extends StarlightRelighter<ServerLeve
             int x = pos.x;
             int z = pos.z;
             if (delay) { // we still need to send the block changes of that chunk
-                PaperweightPlatformAdapter.sendChunk(pos, serverLevel, x, z);
+                PaperweightPlatformAdapter.sendChunk(new IntPair(x, z), serverLevel, x, z);
             }
             serverLevel.getChunkSource().removeTicketAtLevel(FAWE_TICKET, pos, LIGHT_LEVEL, Unit.INSTANCE);
         }

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/regen/PaperweightRegen.java

@@ -1,175 +1,76 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.regen;
 
-import ca.spottedleaf.moonrise.patches.chunk_system.scheduling.ChunkHolderManager;
 import com.fastasyncworldedit.bukkit.adapter.Regenerator;
 import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.queue.IChunkCache;
 import com.fastasyncworldedit.core.queue.IChunkGet;
-import com.fastasyncworldedit.core.util.TaskManager;
+import com.fastasyncworldedit.core.queue.implementation.chunk.ChunkCache;
 import com.google.common.collect.ImmutableList;
 import com.mojang.serialization.Lifecycle;
+import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.bukkit.adapter.Refraction;
-import com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1.PaperweightGetBlocks;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.io.file.SafeFiles;
 import com.sk89q.worldedit.world.RegenOptions;
-import io.papermc.lib.PaperLib;
-import it.unimi.dsi.fastutil.objects.Object2ObjectArrayMap;
 import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.dedicated.DedicatedServer;
-import net.minecraft.server.level.ChunkHolder;
-import net.minecraft.server.level.ChunkMap;
-import net.minecraft.server.level.ChunkTaskPriorityQueueSorter.Message;
-import net.minecraft.server.level.GenerationChunkHolder;
-import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ThreadedLevelLightEngine;
 import net.minecraft.server.level.progress.ChunkProgressListener;
-import net.minecraft.util.StaticCache2D;
+import net.minecraft.util.ProgressListener;
-import net.minecraft.util.thread.ProcessorHandle;
-import net.minecraft.util.thread.ProcessorMailbox;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.LevelHeightAccessor;
 import net.minecraft.world.level.LevelSettings;
 import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.FixedBiomeSource;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
-import net.minecraft.world.level.chunk.LevelChunk;
-import net.minecraft.world.level.chunk.ProtoChunk;
-import net.minecraft.world.level.chunk.UpgradeData;
-import net.minecraft.world.level.chunk.status.ChunkPyramid;
-import net.minecraft.world.level.chunk.status.ChunkStatus;
-import net.minecraft.world.level.chunk.status.WorldGenContext;
 import net.minecraft.world.level.dimension.LevelStem;
-import net.minecraft.world.level.levelgen.FlatLevelSource;
 import net.minecraft.world.level.levelgen.NoiseBasedChunkGenerator;
-import net.minecraft.world.level.levelgen.NoiseGeneratorSettings;
 import net.minecraft.world.level.levelgen.WorldOptions;
-import net.minecraft.world.level.levelgen.blending.BlendingData;
-import net.minecraft.world.level.levelgen.flat.FlatLevelGeneratorSettings;
-import net.minecraft.world.level.levelgen.structure.placement.ConcentricRingsStructurePlacement;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
 import net.minecraft.world.level.storage.LevelStorageSource;
 import net.minecraft.world.level.storage.PrimaryLevelData;
-import org.apache.logging.log4j.Logger;
 import org.bukkit.Bukkit;
-import org.bukkit.Chunk;
+import org.bukkit.World;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.CraftWorld;
-import org.bukkit.craftbukkit.generator.CustomChunkGenerator;
 import org.bukkit.generator.BiomeProvider;
-import org.bukkit.generator.BlockPopulator;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
-import javax.annotation.Nullable;
 import java.lang.reflect.Field;
 import java.nio.file.Path;
-import java.util.Collections;
-import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.OptionalLong;
-import java.util.Random;
-import java.util.concurrent.CompletableFuture;
 import java.util.function.BooleanSupplier;
 import java.util.function.Supplier;
 
 import static net.minecraft.core.registries.Registries.BIOME;
 
-public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, LevelChunk, PaperweightRegen.ChunkStatusWrap> {
+public class PaperweightRegen extends Regenerator {
-
-    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     private static final Field serverWorldsField;
     private static final Field paperConfigField;
-    private static final Field flatBedrockField;
-    private static final Field generatorSettingFlatField;
     private static final Field generatorSettingBaseSupplierField;
-    private static final Field delegateField;
-    private static final Field chunkSourceField;
-    private static final Field generatorStructureStateField;
-    private static final Field ringPositionsField;
-    private static final Field hasGeneratedPositionsField;
 
-    //list of chunk stati in correct order without FULL
-    private static final Map<ChunkStatus, Concurrency> chunkStati = new LinkedHashMap<>();
 
     static {
-        chunkStati.put(ChunkStatus.EMPTY, Concurrency.FULL);   // empty: radius -1, does nothing
-        chunkStati.put(ChunkStatus.STRUCTURE_STARTS, Concurrency.NONE);   // structure starts: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.STRUCTURE_REFERENCES,
-                Concurrency.NONE
-        );   // structure refs: radius 8, but only writes to current chunk
-        chunkStati.put(ChunkStatus.BIOMES, Concurrency.NONE);   // biomes: radius 0
-        chunkStati.put(ChunkStatus.NOISE, Concurrency.RADIUS); // noise: radius 8
-        chunkStati.put(ChunkStatus.SURFACE, Concurrency.NONE);   // surface: radius 0, requires NONE
-        chunkStati.put(ChunkStatus.CARVERS, Concurrency.NONE);   // carvers: radius 0, but RADIUS and FULL change results
-        chunkStati.put(ChunkStatus.FEATURES, Concurrency.NONE);   // features: uses unsynchronized maps
-        chunkStati.put(
-                ChunkStatus.INITIALIZE_LIGHT,
-                Concurrency.FULL
-        ); // initialize_light: radius 0
-        chunkStati.put(
-                ChunkStatus.LIGHT,
-                Concurrency.FULL
-        );   // light: radius 1, but no writes to other chunks, only current chunk
-        chunkStati.put(ChunkStatus.SPAWN, Concurrency.NONE);   // spawn: radius 0
-
         try {
             serverWorldsField = CraftServer.class.getDeclaredField("worlds");
             serverWorldsField.setAccessible(true);
 
             Field tmpPaperConfigField;
-            Field tmpFlatBedrockField;
             try { //only present on paper
                 tmpPaperConfigField = Level.class.getDeclaredField("paperConfig");
                 tmpPaperConfigField.setAccessible(true);
-
-                tmpFlatBedrockField = tmpPaperConfigField.getType().getDeclaredField("generateFlatBedrock");
-                tmpFlatBedrockField.setAccessible(true);
             } catch (Exception e) {
                 tmpPaperConfigField = null;
-                tmpFlatBedrockField = null;
             }
             paperConfigField = tmpPaperConfigField;
-            flatBedrockField = tmpFlatBedrockField;
 
             generatorSettingBaseSupplierField = NoiseBasedChunkGenerator.class.getDeclaredField(Refraction.pickName(
                     "settings", "e"));
             generatorSettingBaseSupplierField.setAccessible(true);
-
-            generatorSettingFlatField = FlatLevelSource.class.getDeclaredField(Refraction.pickName("settings", "d"));
-            generatorSettingFlatField.setAccessible(true);
-
-            delegateField = CustomChunkGenerator.class.getDeclaredField("delegate");
-            delegateField.setAccessible(true);
-
-            chunkSourceField = ServerLevel.class.getDeclaredField(Refraction.pickName("chunkSource", "I"));
-            chunkSourceField.setAccessible(true);
-
-            generatorStructureStateField = ChunkMap.class.getDeclaredField(Refraction.pickName("chunkGeneratorState", "w"));
-            generatorStructureStateField.setAccessible(true);
-
-            ringPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(Refraction.pickName("ringPositions", "g"));
-            ringPositionsField.setAccessible(true);
-
-            hasGeneratedPositionsField = ChunkGeneratorStructureState.class.getDeclaredField(
-                    Refraction.pickName("hasGeneratedPositions", "h")
-            );
-            hasGeneratedPositionsField.setAccessible(true);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -177,47 +78,37 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     //runtime
     private ServerLevel originalServerWorld;
-    private ServerChunkCache originalChunkProvider;
     private ServerLevel freshWorld;
-    private ServerChunkCache freshChunkProvider;
     private LevelStorageSource.LevelStorageAccess session;
-    private StructureTemplateManager structureTemplateManager;
-    private ThreadedLevelLightEngine threadedLevelLightEngine;
-    private ChunkGenerator chunkGenerator;
-    private WorldGenContext worldGenContext;
 
     private Path tempDir;
 
-    private boolean generateFlatBedrock = false;
+    public PaperweightRegen(
-
+            World originalBukkitWorld,
-    public PaperweightRegen(org.bukkit.World originalBukkitWorld, Region region, Extent target, RegenOptions options) {
+            Region region,
+            Extent target,
+            RegenOptions options
+    ) {
         super(originalBukkitWorld, region, target, options);
-        if (PaperLib.isPaper()) {
+    }
-            throw new UnsupportedOperationException("Regeneration currently not support on Paper due to the new generation system");
+
+    @Override
+    protected void runTasks(final BooleanSupplier shouldKeepTicking) {
+        while (shouldKeepTicking.getAsBoolean()) {
+            if (!this.freshWorld.getChunkSource().pollTask()) {
+                return;
+            }
         }
     }
 
     @Override
     protected boolean prepare() {
         this.originalServerWorld = ((CraftWorld) originalBukkitWorld).getHandle();
-        originalChunkProvider = originalServerWorld.getChunkSource();
-
-        //flat bedrock? (only on paper)
-        if (paperConfigField != null) {
-            try {
-                generateFlatBedrock = flatBedrockField.getBoolean(paperConfigField.get(originalServerWorld));
-            } catch (Exception ignored) {
-            }
-        }
-
         seed = options.getSeed().orElse(originalServerWorld.getSeed());
-        chunkStati.forEach((s, c) -> super.chunkStatuses.put(new ChunkStatusWrap(s), c));
-
         return true;
     }
 
     @Override
-    @SuppressWarnings("unchecked")
     protected boolean initNewWorld() throws Exception {
         //world folder
         tempDir = java.nio.file.Files.createTempDirectory("FastAsyncWorldEditWorldGen");
@@ -263,8 +154,10 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                 session,
                 newWorldData,
                 originalServerWorld.dimension(),
-                DedicatedServer.getServer().registryAccess().registry(Registries.LEVEL_STEM).orElseThrow()
+                new LevelStem(
-                        .getOrThrow(levelStemResourceKey),
+                        originalServerWorld.dimensionTypeRegistration(),
+                        originalServerWorld.getChunkSource().getGenerator()
+                ),
                 new RegenNoOpWorldLoadListener(),
                 originalServerWorld.isDebug(),
                 seed,
@@ -281,20 +174,32 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
                             WorldEditPlugin.getInstance().getBukkitImplAdapter().getInternalBiomeId(options.getBiomeType())
                     ) : null;
 
-            @Override
-            public void tick(@NotNull BooleanSupplier shouldKeepTicking) { //no ticking
-            }
-
             @Override
             public @NotNull Holder<Biome> getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
                 if (options.hasBiomeType()) {
                     return singleBiome;
                 }
-                return PaperweightRegen.this.chunkGenerator.getBiomeSource().getNoiseBiome(
+                return super.getUncachedNoiseBiome(biomeX, biomeY, biomeZ);
-                        biomeX, biomeY, biomeZ, getChunkSource().randomState().sampler()
-                );
             }
 
+            @Override
+            public void save(
+                    @Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled
+            ) {
+                // noop, spigot
+            }
+
+            @Override
+            public void save(
+                    @Nullable final ProgressListener progressListener,
+                    final boolean flush,
+                    final boolean savingDisabled,
+                    final boolean close
+            ) {
+                // noop, paper
+            }
         }).get();
         freshWorld.noSave = true;
         removeWorldFromWorldsMap();
@@ -302,97 +207,6 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         if (paperConfigField != null) {
             paperConfigField.set(freshWorld, originalServerWorld.paperConfig());
         }
-
-        ChunkGenerator originalGenerator = originalChunkProvider.getGenerator();
-        if (originalGenerator instanceof FlatLevelSource flatLevelSource) {
-            FlatLevelGeneratorSettings generatorSettingFlat = flatLevelSource.settings();
-            chunkGenerator = new FlatLevelSource(generatorSettingFlat);
-        } else if (originalGenerator instanceof NoiseBasedChunkGenerator noiseBasedChunkGenerator) {
-            Holder<NoiseGeneratorSettings> generatorSettingBaseSupplier = (Holder<NoiseGeneratorSettings>)
-                    generatorSettingBaseSupplierField.get(noiseBasedChunkGenerator);
-            BiomeSource biomeSource;
-            if (options.hasBiomeType()) {
-                biomeSource = new FixedBiomeSource(
-                        DedicatedServer.getServer().registryAccess()
-                                .registryOrThrow(BIOME).asHolderIdMap().byIdOrThrow(
-                                        WorldEditPlugin.getInstance().getBukkitImplAdapter().getInternalBiomeId(options.getBiomeType())
-                                )
-                );
-            } else {
-                biomeSource = originalGenerator.getBiomeSource();
-            }
-            chunkGenerator = new NoiseBasedChunkGenerator(
-                    biomeSource,
-                    generatorSettingBaseSupplier
-            );
-        } else if (originalGenerator instanceof CustomChunkGenerator customChunkGenerator) {
-            chunkGenerator = customChunkGenerator.getDelegate();
-        } else {
-            LOGGER.error("Unsupported generator type {}", originalGenerator.getClass().getName());
-            return false;
-        }
-        if (generator != null) {
-            chunkGenerator = new CustomChunkGenerator(freshWorld, chunkGenerator, generator);
-            generateConcurrent = generator.isParallelCapable();
-        }
-//        chunkGenerator.conf = freshWorld.spigotConfig; - Does not exist anymore, may need to be re-addressed
-
-        freshChunkProvider = new ServerChunkCache(
-                freshWorld,
-                session,
-                server.getFixerUpper(),
-                server.getStructureManager(),
-                server.executor,
-                chunkGenerator,
-                freshWorld.spigotConfig.viewDistance,
-                freshWorld.spigotConfig.simulationDistance,
-                server.forceSynchronousWrites(),
-                new RegenNoOpWorldLoadListener(),
-                (chunkCoordIntPair, state) -> {
-                },
-                () -> server.overworld().getDataStorage()
-        ) {
-            // redirect to LevelChunks created in #createChunks
-            @Override
-            public ChunkAccess getChunk(int x, int z, @NotNull ChunkStatus chunkstatus, boolean create) {
-                ChunkAccess chunkAccess = getChunkAt(x, z);
-                if (chunkAccess == null && create) {
-                    chunkAccess = createChunk(getProtoChunkAt(x, z));
-                }
-                return chunkAccess;
-            }
-        };
-
-        if (seed == originalOpts.seed() && !options.hasBiomeType()) {
-            // Optimisation for needless ring position calculation when the seed and biome is the same.
-            ChunkGeneratorStructureState state = (ChunkGeneratorStructureState) generatorStructureStateField.get(
-                    originalChunkProvider.chunkMap);
-            boolean hasGeneratedPositions = hasGeneratedPositionsField.getBoolean(state);
-            if (hasGeneratedPositions) {
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> origPositions =
-                        (Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>>) ringPositionsField.get(state);
-                Map<ConcentricRingsStructurePlacement, CompletableFuture<List<ChunkPos>>> copy = new Object2ObjectArrayMap<>(
-                        origPositions);
-                ChunkGeneratorStructureState newState = (ChunkGeneratorStructureState) generatorStructureStateField.get(
-                        freshChunkProvider.chunkMap);
-                ringPositionsField.set(newState, copy);
-                hasGeneratedPositionsField.setBoolean(newState, true);
-            }
-        }
-
-
-        chunkSourceField.set(freshWorld, freshChunkProvider);
-        //let's start then
-        structureTemplateManager = server.getStructureManager();
-        threadedLevelLightEngine = new NoOpLightEngine(freshChunkProvider);
-
-        this.worldGenContext = new WorldGenContext(
-                freshWorld,
-                chunkGenerator,
-                structureTemplateManager,
-                threadedLevelLightEngine,
-                originalChunkProvider.chunkMap.worldGenContext.mainThreadMailBox()
-        );
         return true;
     }
 
@@ -407,7 +221,8 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         try {
             Fawe.instance().getQueueHandler().sync(() -> {
                 try {
-                    freshChunkProvider.close(false);
+                    freshWorld.getChunkSource().getDataStorage().cache.clear();
+                    freshWorld.getChunkSource().close(false);
                 } catch (Exception e) {
                     throw new RuntimeException(e);
                 }
@@ -428,50 +243,9 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
         }
     }
 
-    @Override
-    protected ProtoChunk createProtoChunk(int x, int z) {
-        return new FastProtoChunk(new ChunkPos(x, z), UpgradeData.EMPTY, freshWorld,
-                this.freshWorld.registryAccess().registryOrThrow(BIOME), null
-        );
-    }
-
-    @Override
-    protected LevelChunk createChunk(ProtoChunk protoChunk) {
-        return new LevelChunk(
-                freshWorld,
-                protoChunk,
-                null // we don't want to add entities
-        );
-    }
-
-    @Override
-    protected ChunkStatusWrap getFullChunkStatus() {
-        return new ChunkStatusWrap(ChunkStatus.FULL);
-    }
-
-    @Override
-    protected List<BlockPopulator> getBlockPopulators() {
-        return originalServerWorld.getWorld().getPopulators();
-    }
-
-    @Override
-    protected void populate(LevelChunk levelChunk, Random random, BlockPopulator blockPopulator) {
-        // BlockPopulator#populate has to be called synchronously for TileEntity access
-        TaskManager.taskManager().task(() -> {
-            final CraftWorld world = freshWorld.getWorld();
-            final Chunk chunk = world.getChunkAt(levelChunk.locX, levelChunk.locZ);
-            blockPopulator.populate(world, random, chunk);
-        });
-    }
-
     @Override
     protected IChunkCache<IChunkGet> initSourceQueueCache() {
-        return (chunkX, chunkZ) -> new PaperweightGetBlocks(freshWorld, chunkX, chunkZ) {
+        return new ChunkCache<>(BukkitAdapter.adapt(freshWorld.getWorld()));
-            @Override
-            public LevelChunk ensureLoaded(ServerLevel nmsWorld, int x, int z) {
-                return getChunkAt(x, z);
-            }
-        };
     }
 
     //util
@@ -525,99 +299,4 @@ public class PaperweightRegen extends Regenerator<ChunkAccess, ProtoChunk, Level
 
     }
 
-    private class FastProtoChunk extends ProtoChunk {
-
-        public FastProtoChunk(
-                final ChunkPos pos,
-                final UpgradeData upgradeData,
-                final LevelHeightAccessor world,
-                final Registry<Biome> biomeRegistry,
-                @Nullable final BlendingData blendingData
-        ) {
-            super(pos, upgradeData, world, biomeRegistry, blendingData);
-        }
-
-        // avoid warning on paper
-
-        @SuppressWarnings("unused") // compatibility with spigot
-        public boolean generateFlatBedrock() {
-            return generateFlatBedrock;
-        }
-
-        // no one will ever see the entities!
-        @Override
-        public @NotNull List<CompoundTag> getEntities() {
-            return Collections.emptyList();
-        }
-
-    }
-
-    protected class ChunkStatusWrap extends ChunkStatusWrapper<ChunkAccess> {
-
-        private final ChunkStatus chunkStatus;
-
-        public ChunkStatusWrap(ChunkStatus chunkStatus) {
-            this.chunkStatus = chunkStatus;
-        }
-
-        @Override
-        public int requiredNeighborChunkRadius() {
-            return ChunkPyramid.GENERATION_PYRAMID.getStepTo(ChunkStatus.FULL).getAccumulatedRadiusOf(chunkStatus);
-        }
-
-        @Override
-        public String name() {
-            return chunkStatus.toString();
-        }
-
-        @Override
-        public CompletableFuture<?> processChunk(List<ChunkAccess> accessibleChunks) {
-            ChunkAccess chunkAccess = accessibleChunks.get(accessibleChunks.size() / 2);
-            int chunkX = chunkAccess.getPos().x;
-            int chunkZ = chunkAccess.getPos().z;
-            getProtoChunkAt(chunkX, chunkZ);
-            StaticCache2D<GenerationChunkHolder> neighbours = StaticCache2D
-                    .create(
-                            chunkX,
-                            chunkZ,
-                            requiredNeighborChunkRadius(),
-                            (final int nx, final int nz) -> new ChunkHolder(new ChunkPos(nx, nz),
-                                    ChunkHolderManager.MAX_TICKET_LEVEL,
-                                    freshWorld,
-                                    threadedLevelLightEngine,
-                                    null,
-                                    freshChunkProvider.chunkMap
-                            )
-                    );
-            return ChunkPyramid.GENERATION_PYRAMID.getStepTo(chunkStatus).apply(
-                    worldGenContext,
-                    neighbours,
-                    chunkAccess
-            );
-        }
-
-    }
-
-    /**
-     * A light engine that does nothing. As light is calculated after pasting anyway, we can avoid
-     * work this way.
-     */
-    static class NoOpLightEngine extends ThreadedLevelLightEngine {
-
-        private static final ProcessorMailbox<Runnable> MAILBOX = ProcessorMailbox.create(task -> {
-        }, "fawe-no-op");
-        private static final ProcessorHandle<Message<Runnable>> HANDLE = ProcessorHandle.of("fawe-no-op", m -> {
-        });
-
-        public NoOpLightEngine(final ServerChunkCache chunkProvider) {
-            super(chunkProvider, chunkProvider.chunkMap, false, MAILBOX, HANDLE);
-        }
-
-        @Override
-        public @NotNull CompletableFuture<ChunkAccess> lightChunk(final @NotNull ChunkAccess chunk, final boolean excludeBlocks) {
-            return CompletableFuture.completedFuture(chunk);
-        }
-
-    }
-
 }

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/FaweBukkitWorld.java

@@ -0,0 +1,67 @@
+package com.fastasyncworldedit.bukkit;
+
+import com.fastasyncworldedit.bukkit.adapter.NMSAdapter;
+import com.fastasyncworldedit.bukkit.util.WorldUnloadedException;
+import com.fastasyncworldedit.core.math.IntPair;
+import com.sk89q.worldedit.bukkit.BukkitWorld;
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+
+import java.lang.ref.WeakReference;
+import java.util.Collections;
+import java.util.Map;
+import java.util.WeakHashMap;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class FaweBukkitWorld extends BukkitWorld {
+
+    private static final Map<World, FaweBukkitWorld> CACHE = Collections.synchronizedMap(new WeakHashMap<>());
+
+    private final ConcurrentHashMap<IntPair, NMSAdapter.ChunkSendLock> SENDING_CHUNKS = new ConcurrentHashMap<>();
+
+    /**
+     * Construct the object.
+     *
+     * @param world the world
+     */
+    private FaweBukkitWorld(final World world) {
+        super(world);
+    }
+
+    public static FaweBukkitWorld of(World world) {
+        return CACHE.compute(world, (__, val) -> {
+            if (val == null) {
+                return new FaweBukkitWorld(world);
+            }
+            val.updateReference();
+            return val;
+        });
+    }
+
+    public static FaweBukkitWorld of(String worldName) {
+        World world = Bukkit.getWorld(worldName);
+        if (world == null) {
+            throw new UnsupportedOperationException("Unable to find org.bukkit.World instance for " + worldName + ". Is it loaded?");
+        }
+        return of(world);
+    }
+
+    public static ConcurrentHashMap<IntPair, NMSAdapter.ChunkSendLock> getWorldSendingChunksMap(FaweBukkitWorld world) {
+        return world.SENDING_CHUNKS;
+    }
+
+    public static ConcurrentHashMap<IntPair, NMSAdapter.ChunkSendLock> getWorldSendingChunksMap(String worldName) {
+        return of(worldName).SENDING_CHUNKS;
+    }
+
+    private void updateReference() {
+        World world = getWorld();
+        World bukkitWorld = Bukkit.getWorld(worldNameRef);
+        if (bukkitWorld == null) {
+            throw new WorldUnloadedException(worldNameRef);
+        } else if (bukkitWorld != world) {
+            worldRef = new WeakReference<>(bukkitWorld);
+        }
+    }
+
+}

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/adapter/NMSAdapter.java

@@ -1,12 +1,17 @@
 package com.fastasyncworldedit.bukkit.adapter;
 
+import com.fastasyncworldedit.bukkit.FaweBukkitWorld;
 import com.fastasyncworldedit.core.FAWEPlatformAdapterImpl;
+import com.fastasyncworldedit.core.math.IntPair;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.util.MathMan;
+import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.locks.StampedLock;
 import java.util.function.Function;
 
 public class NMSAdapter implements FAWEPlatformAdapterImpl {
@@ -140,4 +145,118 @@ public class NMSAdapter implements FAWEPlatformAdapterImpl {
         ((BukkitGetBlocks) chunk).send();
     }
 
+    /**
+     * Atomically set the given chunk section to the chunk section array stored in the chunk, given the expected existing chunk
+     * section instance at the given layer position.
+     * <p>
+     * Acquires a (FAWE-implemented only) write-lock on the chunk packet lock, waiting if required before writing, then freeing
+     * the lock. Also sets a boolean to indicate a write is waiting and therefore reads should not occur.
+     * <p>
+     * Utilises ConcurrentHashMap#compute for easy synchronisation for all of the above. Only tryWriteLock is used in blocks
+     * synchronised using ConcurrentHashMap methods.
+     *
+     * @since TODO
+     */
+    protected static <LevelChunkSection> boolean setSectionAtomic(
+            String worldName,
+            IntPair pair,
+            LevelChunkSection[] sections,
+            LevelChunkSection expected,
+            LevelChunkSection value,
+            int layer
+    ) {
+        if (layer < 0 || layer >= sections.length) {
+            return false;
+        }
+        StampLockHolder holder = new StampLockHolder();
+        ConcurrentHashMap<IntPair, ChunkSendLock> chunks = FaweBukkitWorld.getWorldSendingChunksMap(worldName);
+        chunks.compute(pair, (k, lock) -> {
+            if (lock == null) {
+                lock = new ChunkSendLock();
+            } else if (lock.writeWaiting) {
+                throw new IllegalStateException("Attempting to write chunk section when write is already ongoing?!");
+            }
+            holder.stamp = lock.lock.tryWriteLock();
+            holder.chunkLock = lock;
+            lock.writeWaiting = true;
+            return lock;
+        });
+        try {
+            if (holder.stamp == 0) {
+                holder.stamp = holder.chunkLock.lock.writeLock();
+            }
+            return ReflectionUtils.compareAndSet(sections, expected, value, layer);
+        } finally {
+            chunks = FaweBukkitWorld.getWorldSendingChunksMap(worldName);
+            chunks.computeIfPresent(pair, (k, lock) -> {
+                if (lock != holder.chunkLock) {
+                    throw new IllegalStateException("SENDING_CHUNKS stored lock does not equal lock attempted to be unlocked?!");
+                }
+                lock.lock.unlockWrite(holder.stamp);
+                lock.writeWaiting = false;
+                // Keep the lock, etc. in the map as we're going to be accessing again later when sending
+                return lock;
+            });
+        }
+    }
+
+    /**
+     * Called before sending a chunk packet, filling the given stamp and stampedLock arrays' zeroth indices if the chunk packet
+     * send should go ahead.
+     * <p>
+     * Chunk packets should be sent if both of the following are met:
+     *  - There is no more than one current packet send ongoing
+     *  - There is no chunk section "write" waiting or ongoing,
+     * which are determined by the number of readers currently locking the StampedLock (i.e. the number of sends), if the
+     * stamped lock is currently write-locked and if the boolean for waiting write is true.
+     * <p>
+     * Utilises ConcurrentHashMap#compute for easy synchronisation
+     *
+     * @since TODO
+     */
+    protected static void beginChunkPacketSend(String worldName, IntPair pair, StampLockHolder stampedLock) {
+        ConcurrentHashMap<IntPair, ChunkSendLock> chunks = FaweBukkitWorld.getWorldSendingChunksMap(worldName);
+        chunks.compute(pair, (k, lock) -> {
+            if (lock == null) {
+                lock = new ChunkSendLock();
+            }
+            // Allow twice-read-locking, so if the packets have been created but not sent, we can queue another read
+            if (lock.writeWaiting || lock.lock.getReadLockCount() > 1 || lock.lock.isWriteLocked()) {
+                return lock;
+            }
+            stampedLock.stamp = lock.lock.readLock();
+            stampedLock.chunkLock = lock;
+            return lock;
+        });
+    }
+
+    /**
+     * Releases the read lock acquired when sending a chunk packet for a chunk
+     *
+     * @since TODO
+     */
+    protected static void endChunkPacketSend(String worldName, IntPair pair, StampLockHolder lockHolder) {
+        ConcurrentHashMap<IntPair, ChunkSendLock> chunks = FaweBukkitWorld.getWorldSendingChunksMap(worldName);
+        chunks.computeIfPresent(pair, (k, lock) -> {
+            if (lock.lock != lockHolder.chunkLock.lock) {
+                throw new IllegalStateException("SENDING_CHUNKS stored lock does not equal lock attempted to be unlocked?!");
+            }
+            lock.lock.unlockRead(lockHolder.stamp);
+            // Do not continue to store the lock if we may not need it (i.e. chunk has been sent, may not be sent again)
+            return null;
+        });
+    }
+
+    public static final class StampLockHolder {
+        public long stamp;
+        public ChunkSendLock chunkLock = null;
+    }
+
+    public static final class ChunkSendLock {
+
+        public final StampedLock lock = new StampedLock();
+        public boolean writeWaiting = false;
+
+    }
+
 }

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/adapter/Regenerator.java

@@ -1,67 +1,32 @@
 package com.fastasyncworldedit.bukkit.adapter;
 
-import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.queue.IChunkCache;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.SingleThreadQueueExtent;
-import com.fastasyncworldedit.core.util.MathMan;
+import com.fastasyncworldedit.core.util.TaskManager;
-import com.google.common.collect.Lists;
-import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.internal.util.LogManagerCompat;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.world.RegenOptions;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
-import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
-import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
-import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
-import it.unimi.dsi.fastutil.longs.LongArrayList;
-import it.unimi.dsi.fastutil.longs.LongList;
-import jdk.jfr.Category;
-import jdk.jfr.Event;
-import jdk.jfr.Label;
-import jdk.jfr.Name;
-import org.apache.logging.log4j.Logger;
 import org.bukkit.generator.BiomeProvider;
-import org.bukkit.generator.BlockPopulator;
 import org.bukkit.generator.WorldInfo;
 
-import java.util.AbstractList;
-import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Comparator;
-import java.util.Iterator;
-import java.util.LinkedHashMap;
 import java.util.List;
-import java.util.Map;
+import java.util.concurrent.TimeUnit;
-import java.util.Objects;
+import java.util.function.BooleanSupplier;
-import java.util.Random;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
-import java.util.concurrent.ThreadFactory;
 import java.util.function.Function;
 
 /**
  * Represents an abstract regeneration handler.
- *
- * @param <IChunkAccess> the type of the {@code IChunkAccess} of the current Minecraft implementation
- * @param <ProtoChunk>   the type of the {@code ProtoChunk} of the current Minecraft implementation
- * @param <Chunk>        the type of the {@code Chunk} of the current Minecraft implementation
- * @param <ChunkStatus>  the type of the {@code ChunkStatusWrapper} wrapping the {@code ChunkStatus} enum
  */
-public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess, Chunk extends IChunkAccess, ChunkStatus extends Regenerator.ChunkStatusWrapper<IChunkAccess>> {
+public abstract class Regenerator {
-
-    private static final Logger LOGGER = LogManagerCompat.getLogger();
 
     protected final org.bukkit.World originalBukkitWorld;
     protected final Region region;
@@ -69,13 +34,8 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
     protected final RegenOptions options;
 
     //runtime
-    protected final LinkedHashMap<ChunkStatus, Concurrency> chunkStatuses = new LinkedHashMap<>(); // TODO (j21): use SequencedMap
-    private final Long2ObjectLinkedOpenHashMap<ProtoChunk> protoChunks = new Long2ObjectLinkedOpenHashMap<>();
-    private final Long2ObjectOpenHashMap<Chunk> chunks = new Long2ObjectOpenHashMap<>();
-    protected boolean generateConcurrent = true;
     protected long seed;
-    private ExecutorService executor;
+    protected SingleThreadQueueExtent source;
-    private SingleThreadQueueExtent source;
 
     /**
      * Initializes an abstract regeneration handler.
@@ -92,15 +52,6 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
         this.options = options;
     }
 
-    private static Random getChunkRandom(long worldSeed, int x, int z) {
-        Random random = new Random();
-        random.setSeed(worldSeed);
-        long xRand = random.nextLong() / 2L * 2L + 1L;
-        long zRand = random.nextLong() / 2L * 2L + 1L;
-        random.setSeed((long) x * xRand + (long) z * zRand ^ worldSeed);
-        return random;
-    }
-
     /**
      * Regenerates the selected {@code Region}.
      *
@@ -122,16 +73,6 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
             throw e;
         }
 
-        try {
-            if (!generate()) {
-                cleanup0();
-                return false;
-            }
-        } catch (Exception e) {
-            cleanup0();
-            throw e;
-        }
-
         try {
             copyToWorld();
         } catch (Exception e) {
@@ -144,193 +85,26 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
     }
 
     /**
-     * Returns the {@code ProtoChunk} at the given chunk coordinates.
+     * Execute tasks on the main thread during regen.
-     *
-     * @param x the chunk x coordinate
-     * @param z the chunk z coordinate
-     * @return the {@code ProtoChunk} at the given chunk coordinates or null if it is not part of the regeneration process or has not been initialized yet.
      */
-    protected ProtoChunk getProtoChunkAt(int x, int z) {
+    protected abstract void runTasks(BooleanSupplier shouldKeepTicking);
-        return protoChunks.get(MathMan.pairInt(x, z));
-    }
 
-    /**
+    private void createSource() {
-     * Returns the {@code Chunk} at the given chunk coordinates.
-     *
-     * @param x the chunk x coordinate
-     * @param z the chunk z coordinate
-     * @return the {@code Chunk} at the given chunk coordinates or null if it is not part of the regeneration process or has not been converted yet.
-     */
-    protected Chunk getChunkAt(int x, int z) {
-        return chunks.get(MathMan.pairInt(x, z));
-    }
-
-    private boolean generate() throws Exception {
-        ThreadFactory factory = new ThreadFactoryBuilder()
-                .setNameFormat("FAWE Regenerator - %d")
-                .build();
-        if (generateConcurrent) {
-            //Using concurrent chunk generation
-            executor = Executors.newFixedThreadPool(Settings.settings().QUEUE.PARALLEL_THREADS, factory);
-        } else { // else using sequential chunk generation, concurrent not supported
-            executor = Executors.newSingleThreadExecutor(factory);
-        }
-
-        //TODO: can we get that required radius down without affecting chunk generation (e.g. strucures, features, ...)?
-        //for now it is working well and fast, if we are bored in the future we could do the research (a lot of it) to reduce the border radius
-
-        // to get the chunks we need to generate in the nth chunk status, we need to know how many chunks
-        // we need to generate in the n + 1 th chunk status. Summing up the margin solves that
-        LinkedHashMap<ChunkStatus, long[]> chunkCoordsForChunkStatus = new LinkedHashMap<>();
-        int borderSum = 1;
-        // TODO (j21): use SequencedMap#sequencedKeySet().reversed()
-        final List<ChunkStatus> reversedKeys = Lists.reverse(new ArrayList<>(chunkStatuses.keySet()));
-        for (final ChunkStatus status : reversedKeys) {
-            chunkCoordsForChunkStatus.put(status, getChunkCoordsRegen(region, borderSum));
-            borderSum += status.requiredNeighborChunkRadius();
-        }
-
-        //create chunks
-        // TODO (j21): use SequencedMap#firstEntry().getKey()
-        for (long xz : chunkCoordsForChunkStatus.get(chunkStatuses.keySet().iterator().next())) {
-            ProtoChunk chunk = createProtoChunk(MathMan.unpairIntX(xz), MathMan.unpairIntY(xz));
-            protoChunks.put(xz, chunk);
-        }
-
-        // a memory-efficient, lightweight "list" that calculates index -> ChunkAccess
-        // as needed when accessed
-        class LazyChunkList extends AbstractList<IChunkAccess> {
-            private final int size;
-            private final int minX;
-            private final int minZ;
-            private final int sizeSqrt;
-
-            LazyChunkList(int radius, int centerX, int centerZ) {
-                this.sizeSqrt = radius + 1 + radius; // length of one side
-                this.size = this.sizeSqrt * this.sizeSqrt;
-                this.minX = centerX - radius;
-                this.minZ = centerZ - radius;
-            }
-            @Override
-            public IChunkAccess get(final int index) {
-                Objects.checkIndex(index, size);
-                int absX = (index % sizeSqrt) + minX;
-                int absZ = (index / sizeSqrt) + minZ;
-                return protoChunks.get(MathMan.pairInt(absX, absZ));
-            }
-
-            @Override
-            public int size() {
-                return size;
-            }
-
-        }
-        @Label("Regeneration")
-        @Category("FAWE")
-        @Name("fawe.regen")
-        class RegenerationEvent extends Event {
-            private String chunkStatus;
-            private int chunksToProcess;
-        }
-
-        //run generation tasks excluding FULL chunk status
-        for (Map.Entry<ChunkStatus, Concurrency> entry : chunkStatuses.entrySet()) {
-            ChunkStatus chunkStatus = entry.getKey();
-            final RegenerationEvent event = new RegenerationEvent();
-            event.begin();
-            event.chunkStatus = chunkStatus.name();
-            int radius = Math.max(1, chunkStatus.requiredNeighborChunkRadius0());
-
-            long[] coords = chunkCoordsForChunkStatus.get(chunkStatus);
-            event.chunksToProcess = coords.length;
-            if (this.generateConcurrent && entry.getValue() == Concurrency.RADIUS) {
-                SequentialTasks<ConcurrentTasks<LongList>> tasks = getChunkStatusTaskRows(coords, radius);
-                for (ConcurrentTasks<LongList> para : tasks) {
-                    List<Runnable> scheduled = new ArrayList<>(tasks.size());
-                    for (LongList row : para) {
-                        scheduled.add(() -> {
-                            for (long xz : row) {
-                                chunkStatus.processChunkSave(xz, new LazyChunkList(radius, MathMan.unpairIntX(xz),
-                                        MathMan.unpairIntY(xz)));
-                            }
-                        });
-                    }
-                    runAndWait(scheduled);
-                }
-            } else if (this.generateConcurrent && entry.getValue() == Concurrency.FULL) {
-                // every chunk can be processed individually
-                List<Runnable> scheduled = new ArrayList<>(coords.length);
-                for (long xz : coords) {
-                    scheduled.add(() -> chunkStatus.processChunkSave(xz, new LazyChunkList(radius, MathMan.unpairIntX(xz),
-                            MathMan.unpairIntY(xz))));
-                }
-                runAndWait(scheduled);
-            } else { // Concurrency.NONE or generateConcurrent == false
-                // run sequential but submit to different thread
-                // running regen on the main thread otherwise triggers async-only events on the main thread
-                executor.submit(() -> {
-                    for (long xz : coords) {
-                        chunkStatus.processChunkSave(xz, new LazyChunkList(radius, MathMan.unpairIntX(xz),
-                                MathMan.unpairIntY(xz)));
-                    }
-                }).get(); // wait until finished this step
-            }
-            event.commit();
-        }
-
-        //convert to proper chunks
-        // TODO (j21): use SequencedMap#firstEntry().getValue()
-        for (long xz : chunkCoordsForChunkStatus.values().iterator().next()) {
-            ProtoChunk proto = protoChunks.get(xz);
-            chunks.put(xz, createChunk(proto));
-        }
-
-        //final chunkstatus
-        ChunkStatus FULL = getFullChunkStatus();
-        // TODO (j21): use SequencedMap#firstEntry().getValue()
-        for (long xz : chunkCoordsForChunkStatus.values().iterator().next()) { //FULL.requiredNeighbourChunkRadius() == 0!
-            Chunk chunk = chunks.get(xz);
-            FULL.processChunkSave(xz, List.of(chunk));
-        }
-
-        //populate
-        List<BlockPopulator> populators = getBlockPopulators();
-        // TODO (j21): use SequencedMap#firstEntry().getValue()
-        for (long xz : chunkCoordsForChunkStatus.values().iterator().next()) {
-            int x = MathMan.unpairIntX(xz);
-            int z = MathMan.unpairIntY(xz);
-
-            //prepare chunk seed
-            Random random = getChunkRandom(seed, x, z);
-
-            //actually populate
-            Chunk c = chunks.get(xz);
-            populators.forEach(pop -> {
-                populate(c, random, pop);
-            });
-        }
 
         source = new SingleThreadQueueExtent(
                 BukkitWorld.HAS_MIN_Y ? originalBukkitWorld.getMinHeight() : 0,
                 BukkitWorld.HAS_MIN_Y ? originalBukkitWorld.getMaxHeight() : 256
         );
         source.init(target, initSourceQueueCache(), null);
-        return true;
-    }
-
-    private void runAndWait(final List<Runnable> tasks) {
-        try {
-            List<Future<?>> futures = new ArrayList<>();
-            tasks.forEach(task -> futures.add(executor.submit(task)));
-            for (Future<?> future : futures) {
-                future.get();
-            }
-        } catch (Exception e) {
-            LOGGER.catching(e);
-        }
     }
 
     private void copyToWorld() {
+        createSource();
+        final long timeoutPerTick = TimeUnit.MILLISECONDS.toNanos(10);
+        int taskId = TaskManager.taskManager().repeat(() -> {
+            final long startTime = System.nanoTime();
+            runTasks(() -> System.nanoTime() - startTime < timeoutPerTick);
+        }, 1);
         //Setting Blocks
         boolean genbiomes = options.shouldRegenBiomes();
         boolean hasBiome = options.hasBiomeType();
@@ -343,6 +117,7 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
         } else if (genbiomes) {
             target.setBlocks(region, new WithBiomePlacementPattern(vec -> source.getBiome(vec)));
         }
+        TaskManager.taskManager().cancel(taskId);
     }
 
     private class PlacementPattern implements Pattern {
@@ -382,9 +157,6 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
 
     //functions to be implemented by sub class
     private void cleanup0() {
-        if (executor != null) {
-            executor.shutdownNow();
-        }
         cleanup();
     }
 
@@ -416,47 +188,6 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
      */
     protected abstract void cleanup();
 
-    /**
-     * Implement the initialization of a {@code ProtoChunk} here.
-     *
-     * @param x the x coorinate of the {@code ProtoChunk} to create
-     * @param z the z coorinate of the {@code ProtoChunk} to create
-     * @return an initialized {@code ProtoChunk}
-     */
-    protected abstract ProtoChunk createProtoChunk(int x, int z);
-
-    /**
-     * Implement the convertion of a {@code ProtoChunk} to a {@code Chunk} here.
-     *
-     * @param protoChunk the {@code ProtoChunk} to be converted to a {@code Chunk}
-     * @return the converted {@code Chunk}
-     */
-    protected abstract Chunk createChunk(ProtoChunk protoChunk);
-
-    /**
-     * Return the {@code ChunkStatus.FULL} here.
-     * ChunkStatus.FULL is the last step of vanilla chunk generation.
-     *
-     * @return {@code ChunkStatus.FULL}
-     */
-    protected abstract ChunkStatus getFullChunkStatus();
-
-    /**
-     * Return a list of {@code BlockPopulator} used to populate the original world here.
-     *
-     * @return {@code ChunkStatus.FULL}
-     */
-    protected abstract List<BlockPopulator> getBlockPopulators();
-
-    /**
-     * Implement the population of the {@code Chunk} with the given chunk random and {@code BlockPopulator} here.
-     *
-     * @param chunk  the {@code Chunk} to populate
-     * @param random the chunk random to use for population
-     * @param pop    the {@code BlockPopulator} to use
-     */
-    protected abstract void populate(Chunk chunk, Random random, BlockPopulator pop);
-
     /**
      * Implement the initialization an {@code IChunkCache<IChunkGet>} here. Use will need the {@code getChunkAt} function
      *
@@ -464,106 +195,6 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
      */
     protected abstract IChunkCache<IChunkGet> initSourceQueueCache();
 
-    //algorithms
-    private long[] getChunkCoordsRegen(Region region, int border) { //needs to be square num of chunks
-        BlockVector3 oldMin = region.getMinimumPoint();
-        BlockVector3 newMin = BlockVector3.at(
-                (oldMin.x() >> 4 << 4) - border * 16,
-                oldMin.y(),
-                (oldMin.z() >> 4 << 4) - border * 16
-        );
-        BlockVector3 oldMax = region.getMaximumPoint();
-        BlockVector3 newMax = BlockVector3.at(
-                (oldMax.x() >> 4 << 4) + (border + 1) * 16 - 1,
-                oldMax.y(),
-                (oldMax.z() >> 4 << 4) + (border + 1) * 16 - 1
-        );
-        Region adjustedRegion = new CuboidRegion(newMin, newMax);
-        return adjustedRegion.getChunks().stream()
-                .sorted(Comparator
-                        .comparingInt(BlockVector2::z)
-                        .thenComparingInt(BlockVector2::x)) //needed for RegionLimitedWorldAccess
-                .mapToLong(c -> MathMan.pairInt(c.x(), c.z()))
-                .toArray();
-    }
-
-    /**
-     * Creates a list of chunkcoord rows that may be executed concurrently
-     *
-     * @param allCoords                   the coords that should be sorted into rows, must be sorted by z and x
-     * @param requiredNeighborChunkRadius the radius of neighbor chunks that may not be written to concurrently (ChunkStatus
-     *                                    .requiredNeighborRadius)
-     * @return a list of chunkcoords rows that may be executed concurrently
-     */
-    private SequentialTasks<ConcurrentTasks<LongList>> getChunkStatusTaskRows(
-            long[] allCoords,
-            int requiredNeighborChunkRadius
-    ) {
-        int requiredNeighbors = Math.max(0, requiredNeighborChunkRadius);
-
-        final int coordsCount = allCoords.length;
-        long first = coordsCount == 0 ? 0 : allCoords[0];
-        long last = coordsCount == 0 ? 0 : allCoords[coordsCount - 1];
-        int minX = MathMan.unpairIntX(first);
-        int maxX = MathMan.unpairIntX(last);
-        int minZ = MathMan.unpairIntY(first);
-        int maxZ = MathMan.unpairIntY(last);
-        SequentialTasks<ConcurrentTasks<LongList>> tasks;
-        if (maxZ - minZ > maxX - minX) {
-            int numlists = Math.min(requiredNeighbors * 2 + 1, maxX - minX + 1);
-
-            Int2ObjectOpenHashMap<LongList> byX = new Int2ObjectOpenHashMap<>();
-            int expectedListLength = (coordsCount + 1) / (maxX - minX);
-
-            //init lists
-            for (int i = minX; i <= maxX; i++) {
-                byX.put(i, new LongArrayList(expectedListLength));
-            }
-
-            //sort into lists by x coord
-            for (long allCoord : allCoords) {
-                byX.get(MathMan.unpairIntX(allCoord)).add(allCoord);
-            }
-
-            //create parallel tasks
-            tasks = new SequentialTasks<>(numlists);
-            for (int offset = 0; offset < numlists; offset++) {
-                ConcurrentTasks<LongList> para = new ConcurrentTasks<>((maxZ - minZ + 1) / numlists + 1);
-                for (int i = 0; minX + i * numlists + offset <= maxX; i++) {
-                    para.add(byX.get(minX + i * numlists + offset));
-                }
-                tasks.add(para);
-            }
-        } else {
-            int numlists = Math.min(requiredNeighbors * 2 + 1, maxZ - minZ + 1);
-
-            Int2ObjectOpenHashMap<LongList> byZ = new Int2ObjectOpenHashMap<>();
-            int expectedListLength = (coordsCount + 1) / (maxZ - minZ + 2);
-
-            //init lists
-            for (int i = minZ; i <= maxZ; i++) {
-                byZ.put(i, new LongArrayList(expectedListLength));
-            }
-
-            //sort into lists by x coord
-            for (long allCoord : allCoords) {
-                byZ.get(MathMan.unpairIntY(allCoord)).add(allCoord);
-            }
-
-            //create parallel tasks
-            tasks = new SequentialTasks<>(numlists);
-            for (int offset = 0; offset < numlists; offset++) {
-                ConcurrentTasks<LongList> para = new ConcurrentTasks<>((maxX - minX + 1) / numlists + 1);
-                for (int i = 0; minZ + i * numlists + offset <= maxZ; i++) {
-                    para.add(byZ.get(minZ + i * numlists + offset));
-                }
-                tasks.add(para);
-            }
-        }
-
-        return tasks;
-    }
-
     protected BiomeProvider getBiomeProvider() {
         if (options.hasBiomeType()) {
             return new SingleBiomeProvider();
@@ -579,103 +210,6 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
         NONE
     }
 
-    /**
-     * This class is used to wrap the ChunkStatus of the current Minecraft implementation and as the implementation to execute a chunk generation step.
-     *
-     * @param <IChunkAccess> the IChunkAccess class of the current Minecraft implementation
-     */
-    public static abstract class ChunkStatusWrapper<IChunkAccess> {
-
-        /**
-         * Return the required neighbor chunk radius the wrapped {@code ChunkStatus} requires.
-         *
-         * @return the radius of required neighbor chunks
-         */
-        public abstract int requiredNeighborChunkRadius();
-
-        int requiredNeighborChunkRadius0() {
-            return Math.max(0, requiredNeighborChunkRadius());
-        }
-
-        /**
-         * Return the name of the wrapped {@code ChunkStatus}.
-         *
-         * @return the radius of required neighbor chunks
-         */
-        public abstract String name();
-
-        /**
-         * Return the name of the wrapped {@code ChunkStatus}.
-         *
-         * @param accessibleChunks a list of chunks that will be used during the execution of the wrapped {@code ChunkStatus}.
-         *                         This list is order in the correct order required by the {@code ChunkStatus}, unless Mojang suddenly decides to do things differently.
-         */
-        public abstract CompletableFuture<?> processChunk(List<IChunkAccess> accessibleChunks);
-
-        void processChunkSave(long xz, List<IChunkAccess> accessibleChunks) {
-            try {
-                processChunk(accessibleChunks).get();
-            } catch (Exception e) {
-                LOGGER.error("Error while running {} on chunk {}/{}",
-                        name(), MathMan.unpairIntX(xz), MathMan.unpairIntY(xz), e);
-            }
-        }
-
-        @Override
-        public String toString() {
-            return name();
-        }
-
-    }
-
-    public static class SequentialTasks<T> extends Tasks<T> {
-
-        public SequentialTasks(int expectedSize) {
-            super(expectedSize);
-        }
-
-    }
-
-    public static class ConcurrentTasks<T> extends Tasks<T> {
-
-        public ConcurrentTasks(int expectedSize) {
-            super(expectedSize);
-        }
-
-    }
-
-    public static class Tasks<T> implements Iterable<T> {
-
-        private final List<T> tasks;
-
-        public Tasks(int expectedSize) {
-            tasks = new ArrayList<>(expectedSize);
-        }
-
-        public void add(T task) {
-            tasks.add(task);
-        }
-
-        public List<T> list() {
-            return tasks;
-        }
-
-        public int size() {
-            return tasks.size();
-        }
-
-        @Override
-        public Iterator<T> iterator() {
-            return tasks.iterator();
-        }
-
-        @Override
-        public String toString() {
-            return tasks.toString();
-        }
-
-    }
-
     public class SingleBiomeProvider extends BiomeProvider {
 
         private final org.bukkit.block.Biome biome = BukkitAdapter.adapt(options.getBiomeType());

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/regions/GriefDefenderFeature.java

@@ -3,7 +3,9 @@ package com.fastasyncworldedit.bukkit.regions;
 import com.fastasyncworldedit.core.regions.FaweMask;
 import com.griefdefender.api.GriefDefender;
 import com.griefdefender.api.claim.Claim;
+import com.griefdefender.api.claim.ClaimManager;
 import com.griefdefender.api.claim.TrustTypes;
+import com.griefdefender.lib.flowpowered.math.vector.Vector3i;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -17,8 +19,8 @@ public class GriefDefenderFeature extends BukkitMaskManager implements Listener
 
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
-    public GriefDefenderFeature(final Plugin GriefDefenderPlugin) {
+    public GriefDefenderFeature(final Plugin plugin) {
-        super(GriefDefenderPlugin.getName());
+        super(plugin.getName());
         LOGGER.info("Plugin 'GriefDefender' found. Using it now.");
     }
 
@@ -44,9 +46,14 @@ public class GriefDefenderFeature extends BukkitMaskManager implements Listener
                 );
                 return new FaweMask(new CuboidRegion(pos1, pos2)) {
 
+                    private final int[] bounds = new int[]{
+                            pos1.x(), pos1.y(), pos1.z(),
+                            pos2.x(), pos2.y(), pos2.z()
+                    };
+
                     @Override
                     public boolean isValid(com.sk89q.worldedit.entity.Player wePlayer, MaskType type) {
-                        return isAllowed(player, claim, type);
+                        return validateClaimAgainstCache(claim, bounds) && isAllowed(player, claim, type);
                     }
                 };
             }
@@ -54,4 +61,20 @@ public class GriefDefenderFeature extends BukkitMaskManager implements Listener
         return null;
     }
 
+    private static boolean validateClaimAgainstCache(Claim claim, int[] bounds) {
+        Vector3i min = claim.getLesserBoundaryCorner();
+        Vector3i max = claim.getGreaterBoundaryCorner();
+        if (min.getX() != bounds[0] || min.getY() != bounds[1] || min.getZ() != bounds[2]) {
+            return false;
+        }
+        if (max.getX() != bounds[3] || max.getY() != bounds[4] || max.getZ() != bounds[5]) {
+            return false;
+        }
+        final ClaimManager manager = GriefDefender.getCore().getClaimManager(claim.getWorldUniqueId());
+        if (manager == null) {
+            return false;
+        }
+        return manager.getClaimByUUID(claim.getUniqueId()) != null;
+    }
+
 }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -24,12 +24,12 @@ import com.fastasyncworldedit.core.Fawe;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.internal.exception.FaweException;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.packet.ChunkPacket;
 import com.fastasyncworldedit.core.util.TaskManager;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.blocks.BaseItem;
@@ -118,9 +118,9 @@ public class BukkitWorld extends AbstractWorld {
         HAS_MIN_Y = temp;
     }
 
-    private WeakReference<World> worldRef;
+    protected WeakReference<World> worldRef;
     //FAWE start
-    private final String worldNameRef;
+    protected final String worldNameRef;
     //FAWE end
     private final WorldNativeAccess<?, ?, ?> worldNativeAccess;
 
@@ -665,7 +665,7 @@ public class BukkitWorld extends AbstractWorld {
     }
 
     @Override
-    public boolean setTile(int x, int y, int z, CompoundTag tile) throws WorldEditException {
+    public boolean tile(int x, int y, int z, FaweCompoundTag tile) throws WorldEditException {
         return false;
     }
 

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplLoader.java

@@ -165,9 +165,11 @@ public class BukkitImplLoader {
      * @throws AdapterLoadException thrown if no adapter could be found
      */
     public BukkitImplAdapter loadAdapter() throws AdapterLoadException {
+        // FAWE - do not initialize classes on lookup
+        final ClassLoader classLoader = this.getClass().getClassLoader();
         for (String className : adapterCandidates) {
             try {
-                Class<?> cls = Class.forName(className);
+                Class<?> cls = Class.forName(className, false, classLoader);
                 if (cls.isSynthetic()) {
                     continue;
                 }

worldedit-cli/src/main/java/com/sk89q/worldedit/cli/schematic/ClipboardWorld.java

@@ -19,10 +19,10 @@
 
 package com.sk89q.worldedit.cli.schematic;
 
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.implementation.packet.ChunkPacket;
 import com.google.common.collect.ImmutableSet;
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.WorldEditException;
@@ -193,7 +193,7 @@ public class ClipboardWorld extends AbstractWorld implements Clipboard, CLIWorld
     }
 
     @Override
-    public boolean setTile(int x, int y, int z, CompoundTag tile) throws WorldEditException {
+    public boolean tile(int x, int y, int z, FaweCompoundTag tile) throws WorldEditException {
         return false;
     }
 

worldedit-core/src/main/java/com/fastasyncworldedit/core/Fawe.java

@@ -365,6 +365,18 @@ public class Fawe {
                     Settings.settings().QUEUE.PARALLEL_THREADS
             );
         }
+        if (Settings.settings().HISTORY.DELETE_DISK_ON_LOGOUT && Settings.settings().HISTORY.USE_DATABASE) {
+            LOGGER.warn("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            LOGGER.warn("!!!                                                                !!!");
+            LOGGER.warn("!!!    Using history database whilst deleting disk history!        !!!");
+            LOGGER.warn("!!!    You will not be able to rollback edits after a user logs    !!!");
+            LOGGER.warn("!!!    out, recommended to disable delete-disk-on-logout if you    !!!");
+            LOGGER.warn("!!!    you want to have full history rollback functionality.       !!!");
+            LOGGER.warn("!!!    Disable use-database if you do not need to have rollback    !!!");
+            LOGGER.warn("!!!    functionality and wish to disable this warning.             !!!");
+            LOGGER.warn("!!!                                                                !!!");
+            LOGGER.warn("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+        }
         try {
             byte[] in = new byte[0];
             byte[] compressed = LZ4Factory.fastestJavaInstance().fastCompressor().compress(in);

worldedit-core/src/main/java/com/fastasyncworldedit/core/FaweCache.java

@@ -192,17 +192,22 @@ public enum FaweCache implements Trimable {
             Type.OUTSIDE_REGION
     );
     public static final FaweException MAX_CHECKS = new FaweException(
-            Caption.of("fawe.cancel.reason.max" + ".checks"),
+            Caption.of("fawe.cancel.reason.max.checks"),
+            Type.MAX_CHECKS,
+            true
+    );
+    public static final FaweException MAX_FAILS = new FaweException(
+            Caption.of("fawe.cancel.reason.max.fails"),
             Type.MAX_CHECKS,
             true
     );
     public static final FaweException MAX_CHANGES = new FaweException(
-            Caption.of("fawe.cancel.reason.max" + ".changes"),
+            Caption.of("fawe.cancel.reason.max.changes"),
             Type.MAX_CHANGES,
             false
     );
     public static final FaweException LOW_MEMORY = new FaweException(
-            Caption.of("fawe.cancel.reason.low" + ".memory"),
+            Caption.of("fawe.cancel.reason.low.memory"),
             Type.LOW_MEMORY,
             false
     );

worldedit-core/src/main/java/com/fastasyncworldedit/core/configuration/Settings.java

@@ -123,29 +123,31 @@ public class Settings extends Config {
                         limit.MAX_ACTIONS,
                         newLimit.MAX_ACTIONS != -1 ? newLimit.MAX_ACTIONS : Integer.MAX_VALUE
                 );
-                limit.MAX_CHANGES = Math.max(
+                limit.MAX_CHANGES.set(Math.max(
-                        limit.MAX_CHANGES,
+                        limit.MAX_CHANGES.get(),
                         newLimit.MAX_CHANGES != -1 ? newLimit.MAX_CHANGES : Long.MAX_VALUE
-                );
+                ));
-                limit.MAX_BLOCKSTATES = Math.max(
+                limit.MAX_BLOCKSTATES.set(Math.max(
-                        limit.MAX_BLOCKSTATES,
+                        limit.MAX_BLOCKSTATES.get(),
                         newLimit.MAX_BLOCKSTATES != -1 ? newLimit.MAX_BLOCKSTATES : Integer.MAX_VALUE
-                );
+                ));
-                limit.MAX_CHECKS = Math.max(
+                limit.MAX_CHECKS.set(Math.max(
-                        limit.MAX_CHECKS,
+                        limit.MAX_CHECKS.get(),
                         newLimit.MAX_CHECKS != -1 ? newLimit.MAX_CHECKS : Long.MAX_VALUE
-                );
+                ));
-                limit.MAX_ENTITIES = Math.max(
+                limit.MAX_ENTITIES.set(Math.max(
-                        limit.MAX_ENTITIES,
+                        limit.MAX_ENTITIES.get(),
                         newLimit.MAX_ENTITIES != -1 ? newLimit.MAX_ENTITIES : Integer.MAX_VALUE
-                );
+                ));
-                limit.MAX_FAILS = Math.max(limit.MAX_FAILS, newLimit.MAX_FAILS != -1 ? newLimit.MAX_FAILS : Integer.MAX_VALUE);
+                limit.MAX_FAILS.set(Math.max(
-                limit.MAX_ITERATIONS = Math.max(
+                        limit.MAX_FAILS.get(),
-                        limit.MAX_ITERATIONS, newLimit.MAX_ITERATIONS != -1 ? newLimit.MAX_ITERATIONS : Integer.MAX_VALUE);
+                        newLimit.MAX_FAILS != -1 ? newLimit.MAX_FAILS : Integer.MAX_VALUE
-                limit.MAX_RADIUS = Math.max(
+                ));
-                        limit.MAX_RADIUS,
+                limit.MAX_ITERATIONS.set(Math.max(
-                        newLimit.MAX_RADIUS != -1 ? newLimit.MAX_RADIUS : Integer.MAX_VALUE
+                        limit.MAX_ITERATIONS.get(),
-                );
+                        newLimit.MAX_ITERATIONS != -1 ? newLimit.MAX_ITERATIONS : Integer.MAX_VALUE
+                ));
+                limit.MAX_RADIUS = Math.max(limit.MAX_RADIUS, newLimit.MAX_RADIUS != -1 ? newLimit.MAX_RADIUS : Integer.MAX_VALUE);
                 limit.MAX_SUPER_PICKAXE_SIZE = Math.max(
                         limit.MAX_SUPER_PICKAXE_SIZE,
                         newLimit.MAX_SUPER_PICKAXE_SIZE != -1 ? newLimit.MAX_SUPER_PICKAXE_SIZE : Integer.MAX_VALUE
@@ -622,6 +624,13 @@ public class Settings extends Config {
     })
     public static class EXPERIMENTAL {
 
+        @Comment({
+                "Undo operation batch size",
+                " - The size defines the number of changes read at once.",
+                " - Larger numbers might reduce overhead but increase latency for edits with only few changes.",
+                " - 0 means undo operations are not batched."})
+        public int UNDO_BATCH_SIZE = 128;
+
         @Comment({
                 "[UNSAFE] Directly modify the region files. (OBSOLETE - USE ANVIL COMMANDS)",
                 " - IMPROPER USE CAN CAUSE WORLD CORRUPTION!",
@@ -668,6 +677,11 @@ public class Settings extends Config {
         })
         public boolean ALLOW_TICK_FLUIDS = false;
 
+        @Comment({
+                "Whether FAWE should use the incubator Vector API to accelerate some operations"
+        })
+        public boolean USE_VECTOR_API = false;
+
     }
 
     @Comment({"Web/HTTP connection related settings"})

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/AdjacentMaskParser.java

@@ -19,9 +19,9 @@ public class AdjacentMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return worldEdit.getMaskFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getMaskFactory().getSuggestions(argumentInput, context).stream();
         } else if (index == 1 || index == 2) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/AngleMaskParser.java

@@ -22,7 +22,7 @@ public class AngleMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0 || index == 1) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput).flatMap(s -> Stream.of(s, s + "d"));
         } else if (index > 1 && index <= 1 + flags.length) {

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/BesideMaskParser.java

@@ -18,9 +18,9 @@ public class BesideMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(final String argumentInput, final int index) {
+    protected Stream<String> getSuggestions(final String argumentInput, final int index, ParserContext context) {
         if (index == 0) {
-            return worldEdit.getMaskFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getMaskFactory().getSuggestions(argumentInput, context).stream();
         } else if (index == 1 || index == 2) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/ExtremaMaskParser.java

@@ -22,7 +22,7 @@ public class ExtremaMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0 || index == 1) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput).flatMap(s -> Stream.of(s, s + "d"));
         } else if (index > 1 && index <= 1 + flags.length) {

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/ROCAngleMaskParser.java

@@ -22,7 +22,7 @@ public class ROCAngleMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0 || index == 1) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput).flatMap(s -> Stream.of(s, s + "d"));
         } else if (index > 1 && index <= 1 + flags.length) {

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/RadiusMaskParser.java

@@ -18,7 +18,7 @@ public class RadiusMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0 || index == 1) {
             return SuggestionHelper.suggestPositiveIntegers(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/RichOffsetMaskParser.java

@@ -24,12 +24,12 @@ public class RichOffsetMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index < 3) {
             return SuggestionHelper.suggestPositiveIntegers(argumentInput);
         }
         if (index == 3) {
-            return worldEdit.getMaskFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getMaskFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/SimplexMaskParser.java

@@ -20,7 +20,7 @@ public class SimplexMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index < 3) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/SurfaceAngleMaskParser.java

@@ -23,7 +23,7 @@ public class SurfaceAngleMaskParser extends RichParser<Mask> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index <= 2) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/AngleColorPatternParser.java

@@ -25,7 +25,7 @@ public class AngleColorPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index != 0) {
             return Stream.empty();
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/AverageColorPatternParser.java

@@ -25,7 +25,7 @@ public class AverageColorPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index > 4) {
             return Stream.empty();
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/BiomePatternParser.java

@@ -54,7 +54,7 @@ public class BiomePatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
             return BiomeType.REGISTRY.getSuggestions(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/BufferedPattern2DParser.java

@@ -26,9 +26,9 @@ public class BufferedPattern2DParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/BufferedPatternParser.java

@@ -26,9 +26,9 @@ public class BufferedPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/ColorPatternParser.java

@@ -26,7 +26,7 @@ public class ColorPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index > 4) {
             return Stream.empty();
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/DesaturatePatternParser.java

@@ -25,7 +25,7 @@ public class DesaturatePatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/Linear2DPatternParser.java

@@ -28,9 +28,9 @@ public class Linear2DPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1, 2 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/Linear3DPatternParser.java

@@ -28,9 +28,9 @@ public class Linear3DPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1, 2, 3 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/LinearPatternParser.java

@@ -28,9 +28,9 @@ public class LinearPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1, 2, 3 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/MaskedPatternParser.java

@@ -25,10 +25,10 @@ public class MaskedPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getMaskFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getMaskFactory().getSuggestions(argumentInput, context).stream();
-            case 1, 2 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 1, 2 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             default -> Stream.empty();
         };
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/NoXPatternParser.java

@@ -24,9 +24,9 @@ public class NoXPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/NoYPatternParser.java

@@ -24,9 +24,9 @@ public class NoYPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/NoZPatternParser.java

@@ -24,9 +24,9 @@ public class NoZPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/NoisePatternParser.java

@@ -36,12 +36,12 @@ public abstract class NoisePatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }
         if (index == 1) {
-            return worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/OffsetPatternParser.java

@@ -25,9 +25,9 @@ public class OffsetPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1, 2, 3 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/RandomFullClipboardPatternParser.java

@@ -4,6 +4,7 @@ import com.fastasyncworldedit.core.configuration.Caption;
 import com.fastasyncworldedit.core.extension.factory.parser.RichParser;
 import com.fastasyncworldedit.core.extent.clipboard.MultiClipboardHolder;
 import com.fastasyncworldedit.core.function.pattern.RandomFullClipboardPattern;
+import com.google.common.base.Function;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.command.util.SuggestionHelper;
 import com.sk89q.worldedit.extension.input.InputParseException;
@@ -33,7 +34,7 @@ public class RandomFullClipboardPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         switch (index) {
             case 0:
                 if (argumentInput.equals("#") || argumentInput.equals("#c")) {

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/RandomOffsetPatternParser.java

@@ -25,9 +25,9 @@ public class RandomOffsetPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1, 2, 3 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/RelativePatternParser.java

@@ -24,9 +24,9 @@ public class RelativePatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/SaturatePatternParser.java

@@ -25,7 +25,7 @@ public class SaturatePatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index > 3) {
             return Stream.empty();
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/SolidRandomOffsetPatternParser.java

@@ -25,9 +25,9 @@ public class SolidRandomOffsetPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1, 2, 3 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/SurfaceRandomOffsetPatternParser.java

@@ -25,9 +25,9 @@ public class SurfaceRandomOffsetPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         return switch (index) {
-            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            case 0 -> this.worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
             case 1 -> SuggestionHelper.suggestPositiveIntegers(argumentInput);
             default -> Stream.empty();
         };

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/pattern/TypeSwapPatternParser.java

@@ -28,7 +28,7 @@ public class TypeSwapPatternParser extends RichParser<Pattern> {
     }
 
     @Override
-    public Stream<String> getSuggestions(String argumentInput, int index) {
+    public Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index > 2) {
             return Stream.empty();
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/Linear3DTransformParser.java

@@ -23,9 +23,9 @@ public class Linear3DTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/LinearTransformParser.java

@@ -23,9 +23,9 @@ public class LinearTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/OffsetTransformParser.java

@@ -26,11 +26,11 @@ public class OffsetTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index < 3) {
             return SuggestionHelper.suggestPositiveIntegers(argumentInput);
         } else if (index == 3) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/PatternTransformParser.java

@@ -24,11 +24,11 @@ public class PatternTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index == 0) {
-            return worldEdit.getPatternFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getPatternFactory().getSuggestions(argumentInput, context).stream();
         } else if (index == 1) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/RotateTransformParser.java

@@ -25,12 +25,12 @@ public class RotateTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index < 3) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         }
         if (index == 3) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/ScaleTransformParser.java

@@ -24,11 +24,11 @@ public class ScaleTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index < 3) {
             return SuggestionHelper.suggestPositiveDoubles(argumentInput);
         } else if (index == 3) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/transform/SpreadTransformParser.java

@@ -24,11 +24,11 @@ public class SpreadTransformParser extends RichParser<ResettableExtent> {
     }
 
     @Override
-    protected Stream<String> getSuggestions(String argumentInput, int index) {
+    protected Stream<String> getSuggestions(String argumentInput, int index, ParserContext context) {
         if (index < 3) {
             return SuggestionHelper.suggestPositiveIntegers(argumentInput);
         } else if (index == 3) {
-            return worldEdit.getTransformFactory().getSuggestions(argumentInput).stream();
+            return worldEdit.getTransformFactory().getSuggestions(argumentInput, context).stream();
         }
         return Stream.empty();
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/platform/binding/EditSessionHolder.java

@@ -0,0 +1,7 @@
+package com.fastasyncworldedit.core.extension.platform.binding;
+
+import com.sk89q.worldedit.EditSession;
+
+public record EditSessionHolder(EditSession session) {
+
+}

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/platform/binding/ProvideBindings.java

@@ -3,7 +3,11 @@ package com.fastasyncworldedit.core.extension.platform.binding;
 import com.fastasyncworldedit.core.configuration.Caption;
 import com.fastasyncworldedit.core.database.DBHandler;
 import com.fastasyncworldedit.core.database.RollbackDatabase;
+import com.fastasyncworldedit.core.extent.LimitExtent;
+import com.fastasyncworldedit.core.extent.processor.ExtentBatchProcessorHolder;
+import com.fastasyncworldedit.core.internal.exception.FaweException;
 import com.fastasyncworldedit.core.regions.FaweMaskManager;
+import com.fastasyncworldedit.core.util.ExtentTraverser;
 import com.fastasyncworldedit.core.util.TextureUtil;
 import com.fastasyncworldedit.core.util.image.ImageUtil;
 import com.sk89q.worldedit.EditSession;
@@ -11,6 +15,7 @@ import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.command.argument.Arguments;
 import com.sk89q.worldedit.command.util.annotation.AllowedRegion;
+import com.sk89q.worldedit.command.util.annotation.SynchronousSettingExpected;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.platform.Actor;
@@ -25,6 +30,7 @@ import org.enginehub.piston.inject.Key;
 import org.enginehub.piston.util.ValueProvider;
 
 import java.awt.image.BufferedImage;
+import java.lang.reflect.Method;
 import java.net.URI;
 import java.util.Optional;
 
@@ -52,11 +58,33 @@ public class ProvideBindings extends Bindings {
 
     @Binding
     public EditSession editSession(LocalSession localSession, Actor actor, InjectedValueAccess context) {
+        Method commandMethod =
+                context.injectedValue(Key.of(InjectedValueStore.class)).get().injectedValue(Key.of(Method.class)).get();
+
         Arguments arguments = context.injectedValue(Key.of(Arguments.class)).orElse(null);
         String command = arguments == null ? null : arguments.get();
-        EditSession editSession = localSession.createEditSession(actor, command);
+        boolean synchronousSetting = commandMethod.getAnnotation(SynchronousSettingExpected.class) != null;
-        editSession.enableStandardMode();
+        EditSessionHolder holder = context.injectedValue(Key.of(EditSessionHolder.class)).orElse(null);
-        Request.request().setEditSession(editSession);
+        EditSession editSession = holder != null ? holder.session() : null;
+        if (editSession == null) {
+            editSession = localSession.createEditSession(actor, command);
+            editSession.enableStandardMode();
+        } else {
+            LimitExtent limitExtent = new ExtentTraverser<>(editSession).findAndGet(LimitExtent.class);
+            if (limitExtent != null) {
+                limitExtent.setProcessing(!synchronousSetting);
+                if (!synchronousSetting) {
+                    ExtentBatchProcessorHolder processorHolder = new ExtentTraverser<>(editSession).findAndGet(
+                            ExtentBatchProcessorHolder.class);
+                    if (processorHolder != null) {
+                        processorHolder.addProcessor(limitExtent);
+                    } else {
+                        throw new FaweException(Caption.of("fawe.error.no-process-non-synchronous-edit"));
+                    }
+                }
+            }
+            Request.request().setEditSession(editSession);
+        }
         return editSession;
     }
 

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/HistoryExtent.java

@@ -2,6 +2,7 @@ package com.fastasyncworldedit.core.extent;
 
 import com.fastasyncworldedit.core.history.changeset.AbstractChangeSet;
 import com.fastasyncworldedit.core.math.MutableBlockVector3;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
@@ -74,7 +75,7 @@ public class HistoryExtent extends AbstractDelegateExtent {
     public Entity createEntity(Location location, BaseEntity state) {
         final Entity entity = super.createEntity(location, state);
         if (state != null) {
-            this.changeSet.addEntityCreate(state.getNbtData());
+            this.changeSet.addEntityCreate(FaweCompoundTag.of(state.getNbt()));
         }
         return entity;
     }
@@ -84,7 +85,7 @@ public class HistoryExtent extends AbstractDelegateExtent {
     public Entity createEntity(Location location, BaseEntity state, UUID uuid) {
         final Entity entity = super.createEntity(location, state, uuid);
         if (state != null) {
-            this.changeSet.addEntityCreate(state.getNbtData());
+            this.changeSet.addEntityCreate(FaweCompoundTag.of(state.getNbt()));
         }
         return entity;
     }
@@ -154,11 +155,10 @@ public class HistoryExtent extends AbstractDelegateExtent {
 
         @Override
         public boolean remove() {
-            final Location location = this.entity.getLocation();
             final BaseEntity state = this.entity.getState();
             final boolean success = this.entity.remove();
             if (state != null && success) {
-                HistoryExtent.this.changeSet.addEntityRemove(state.getNbtData());
+                HistoryExtent.this.changeSet.addEntityRemove(FaweCompoundTag.of(state.getNbt()));
             }
             return success;
         }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/LimitExtent.java

@@ -1,11 +1,15 @@
 package com.fastasyncworldedit.core.extent;
 
 import com.fastasyncworldedit.core.extent.filter.block.ExtentFilterBlock;
-import com.fastasyncworldedit.core.function.generator.GenBase;
+import com.fastasyncworldedit.core.extent.processor.ProcessorScope;
-import com.fastasyncworldedit.core.function.generator.Resource;
 import com.fastasyncworldedit.core.internal.exception.FaweException;
 import com.fastasyncworldedit.core.limit.FaweLimit;
 import com.fastasyncworldedit.core.queue.Filter;
+import com.fastasyncworldedit.core.queue.IBatchProcessor;
+import com.fastasyncworldedit.core.queue.IChunk;
+import com.fastasyncworldedit.core.queue.IChunkGet;
+import com.fastasyncworldedit.core.queue.IChunkSet;
+import com.fastasyncworldedit.core.util.ExtentTraverser;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.WorldEditException;
@@ -17,7 +21,6 @@ import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
-import com.sk89q.worldedit.session.ClipboardHolder;
 import com.sk89q.worldedit.util.Countable;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.formatting.text.Component;
@@ -37,18 +40,22 @@ import java.util.Set;
 import java.util.UUID;
 import java.util.function.Consumer;
 
-public class LimitExtent extends AbstractDelegateExtent {
+public class LimitExtent extends AbstractDelegateExtent implements IBatchProcessor {
 
     private final FaweLimit limit;
     private final boolean[] faweExceptionReasonsUsed = new boolean[FaweException.Type.values().length];
     private final Consumer<Component> onErrorMessage;
+    private final int chunk_size;
+    private boolean processing;
 
     /**
      * Create a new instance.
      *
      * @param extent the extent
      * @param limit  the limit
+     * @deprecated Use {@link LimitExtent#LimitExtent(Extent, FaweLimit, Consumer, boolean)}
      */
+    @Deprecated(forRemoval = true, since = "TODO")
     public LimitExtent(Extent extent, FaweLimit limit) {
         this(extent, limit, c -> {
         });
@@ -60,11 +67,33 @@ public class LimitExtent extends AbstractDelegateExtent {
      * @param extent         the extent
      * @param limit          the limit
      * @param onErrorMessage consumer to handle a component generated by exceptions
+     * @deprecated Use {@link LimitExtent#LimitExtent(Extent, FaweLimit, Consumer, boolean)}
      */
+    @Deprecated(forRemoval = true, since = "TODO")
     public LimitExtent(Extent extent, FaweLimit limit, Consumer<Component> onErrorMessage) {
+        this(extent, limit, onErrorMessage, false);
+    }
+
+    /**
+     * Create a new instance.
+     *
+     * @param extent                   the extent
+     * @param limit                    the limit
+     * @param onErrorMessage           consumer to handle a component generated by exceptions
+     * @param processing               if this limit extent is expected to be processing
+     * @since TODO
+     */
+    public LimitExtent(
+            Extent extent,
+            FaweLimit limit,
+            Consumer<Component> onErrorMessage,
+            boolean processing
+    ) {
         super(extent);
         this.limit = limit;
         this.onErrorMessage = onErrorMessage;
+        this.chunk_size = 16 * 16 * (extent.getMaxY() - extent.getMinY());
+        this.processing = processing;
     }
 
     private void handleException(FaweException e) {
@@ -81,7 +110,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public List<? extends Entity> getEntities(Region region) {
         limit.THROW_MAX_CHECKS(region.getVolume());
         try {
-            return super.getEntities(region);
+            return extent.getEntities(region);
         } catch (FaweException e) {
             handleException(e);
             return Collections.emptyList();
@@ -92,7 +121,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public List<? extends Entity> getEntities() {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getEntities();
+            return extent.getEntities();
         } catch (FaweException e) {
             handleException(e);
             return Collections.emptyList();
@@ -105,7 +134,7 @@ public class LimitExtent extends AbstractDelegateExtent {
         limit.THROW_MAX_CHANGES();
         limit.THROW_MAX_ENTITIES();
         try {
-            return super.createEntity(location, entity);
+            return extent.createEntity(location, entity);
         } catch (FaweException e) {
             handleException(e);
             return null;
@@ -118,7 +147,7 @@ public class LimitExtent extends AbstractDelegateExtent {
         limit.THROW_MAX_CHANGES();
         limit.THROW_MAX_ENTITIES();
         try {
-            return super.createEntity(location, entity, uuid);
+            return extent.createEntity(location, entity, uuid);
         } catch (FaweException e) {
             handleException(e);
             return null;
@@ -130,7 +159,7 @@ public class LimitExtent extends AbstractDelegateExtent {
         limit.THROW_MAX_CHANGES();
         limit.THROW_MAX_ENTITIES();
         try {
-            super.removeEntity(x, y, z, uuid);
+            extent.removeEntity(x, y, z, uuid);
         } catch (FaweException e) {
             handleException(e);
         }
@@ -138,9 +167,9 @@ public class LimitExtent extends AbstractDelegateExtent {
 
     @Override
     public boolean regenerateChunk(int x, int z, @Nullable BiomeType type, @Nullable Long seed) {
-        limit.THROW_MAX_CHANGES(Character.MAX_VALUE);
+        limit.THROW_MAX_CHANGES(chunk_size);
         try {
-            return super.regenerateChunk(x, z, type, seed);
+            return extent.regenerateChunk(x, z, type, seed);
         } catch (FaweException e) {
             handleException(e);
             return false;
@@ -151,7 +180,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getHighestTerrainBlock(int x, int z, int minY, int maxY) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getHighestTerrainBlock(x, z, minY, maxY);
+            return extent.getHighestTerrainBlock(x, z, minY, maxY);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -162,7 +191,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getHighestTerrainBlock(int x, int z, int minY, int maxY, Mask filter) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getHighestTerrainBlock(x, z, minY, maxY, filter);
+            return extent.getHighestTerrainBlock(x, z, minY, maxY, filter);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -173,7 +202,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getNearestSurfaceLayer(int x, int z, int y, int minY, int maxY) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getNearestSurfaceLayer(x, z, y, minY, maxY);
+            return extent.getNearestSurfaceLayer(x, z, y, minY, maxY);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -184,7 +213,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getNearestSurfaceTerrainBlock(int x, int z, int y, int minY, int maxY, boolean ignoreAir) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, ignoreAir);
+            return extent.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, ignoreAir);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -195,7 +224,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getNearestSurfaceTerrainBlock(int x, int z, int y, int minY, int maxY) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY);
+            return extent.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -206,7 +235,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getNearestSurfaceTerrainBlock(int x, int z, int y, int minY, int maxY, int failedMin, int failedMax) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, failedMin, failedMax);
+            return extent.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, failedMin, failedMax);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -217,7 +246,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public int getNearestSurfaceTerrainBlock(int x, int z, int y, int minY, int maxY, int failedMin, int failedMax, Mask mask) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, failedMin, failedMax, mask);
+            return extent.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, failedMin, failedMax, mask);
         } catch (FaweException e) {
             handleException(e);
             return minY;
@@ -237,91 +266,47 @@ public class LimitExtent extends AbstractDelegateExtent {
     ) {
         limit.THROW_MAX_CHECKS(maxY - minY + 1);
         try {
-            return super.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, failedMin, failedMax, ignoreAir);
+            return extent.getNearestSurfaceTerrainBlock(x, z, y, minY, maxY, failedMin, failedMax, ignoreAir);
         } catch (FaweException e) {
             handleException(e);
             return minY;
         }
     }
 
-    @Override
-    public void addCaves(Region region) throws WorldEditException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        super.addCaves(region);
-    }
-
-    @Override
-    public void generate(Region region, GenBase gen) throws WorldEditException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        super.generate(region, gen);
-    }
-
-    @Override
-    public void addSchems(Region region, Mask mask, List<ClipboardHolder> clipboards, int rarity, boolean rotate) throws
-            WorldEditException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        super.addSchems(region, mask, clipboards, rarity, rotate);
-    }
-
-    @Override
-    public void spawnResource(Region region, Resource gen, int rarity, int frequency) throws WorldEditException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        super.spawnResource(region, gen, rarity, frequency);
-    }
-
-    @Override
-    public void addOre(Region region, Mask mask, Pattern material, int size, int frequency, int rarity, int minY, int maxY) throws
-            WorldEditException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        super.addOre(region, mask, material, size, frequency, rarity, minY, maxY);
-    }
-
-    @Override
-    public void addOres(Region region, Mask mask) throws WorldEditException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        super.addOres(region, mask);
-    }
-
     @Override
     public List<Countable<BlockType>> getBlockDistribution(Region region) {
         limit.THROW_MAX_CHECKS(region.getVolume());
-        return super.getBlockDistribution(region);
+        return extent.getBlockDistribution(region);
     }
 
     @Override
     public List<Countable<BlockState>> getBlockDistributionWithData(Region region) {
         limit.THROW_MAX_CHECKS(region.getVolume());
-        return super.getBlockDistributionWithData(region);
+        return extent.getBlockDistributionWithData(region);
     }
 
     @Override
     public int countBlocks(Region region, Set<BaseBlock> searchBlocks) {
         limit.THROW_MAX_CHECKS(region.getVolume());
-        return super.countBlocks(region, searchBlocks);
+        return extent.countBlocks(region, searchBlocks);
     }
 
     @Override
     public int countBlocks(Region region, Mask searchMask) {
         limit.THROW_MAX_CHECKS(region.getVolume());
-        return super.countBlocks(region, searchMask);
+        return extent.countBlocks(region, searchMask);
     }
 
     @Override
     public <B extends BlockStateHolder<B>> int setBlocks(Region region, B block) throws MaxChangedBlocksException {
         limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.setBlocks(region, block);
+        return extent.setBlocks(region, block);
     }
 
     @Override
     public int setBlocks(Region region, Pattern pattern) throws MaxChangedBlocksException {
         limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.setBlocks(region, pattern);
+        return extent.setBlocks(region, pattern);
     }
 
     @Override
@@ -329,41 +314,34 @@ public class LimitExtent extends AbstractDelegateExtent {
             MaxChangedBlocksException {
         limit.THROW_MAX_CHECKS(region.getVolume());
         limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.replaceBlocks(region, filter, replacement);
+        return extent.replaceBlocks(region, filter, replacement);
     }
 
     @Override
     public int replaceBlocks(Region region, Set<BaseBlock> filter, Pattern pattern) throws MaxChangedBlocksException {
         limit.THROW_MAX_CHECKS(region.getVolume());
         limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.replaceBlocks(region, filter, pattern);
+        return extent.replaceBlocks(region, filter, pattern);
     }
 
     @Override
     public int replaceBlocks(Region region, Mask mask, Pattern pattern) throws MaxChangedBlocksException {
         limit.THROW_MAX_CHECKS(region.getVolume());
         limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.replaceBlocks(region, mask, pattern);
+        return extent.replaceBlocks(region, mask, pattern);
-    }
-
-    @Override
-    public int center(Region region, Pattern pattern) throws MaxChangedBlocksException {
-        limit.THROW_MAX_CHECKS(region.getVolume());
-        limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.center(region, pattern);
     }
 
     @Override
     public int setBlocks(Set<BlockVector3> vset, Pattern pattern) {
         limit.THROW_MAX_CHANGES(vset.size());
-        return super.setBlocks(vset, pattern);
+        return extent.setBlocks(vset, pattern);
     }
 
     @Override
     public <T extends Filter> T apply(Region region, T filter, boolean full) {
         limit.THROW_MAX_CHECKS(region.getVolume());
         limit.THROW_MAX_CHANGES(region.getVolume());
-        return super.apply(region, filter, full);
+        return extent.apply(region, filter, full);
     }
 
     @Override
@@ -393,14 +371,14 @@ public class LimitExtent extends AbstractDelegateExtent {
         }
         limit.THROW_MAX_CHECKS(size);
         limit.THROW_MAX_CHANGES(size);
-        return super.apply(positions, filter);
+        return extent.apply(positions, filter);
     }
 
     @Override
     public BlockState getBlock(BlockVector3 position) {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getBlock(position);
+            return extent.getBlock(position);
         } catch (FaweException e) {
             handleException(e);
             return BlockTypes.AIR.getDefaultState();
@@ -411,7 +389,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public BlockState getBlock(int x, int y, int z) {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getBlock(x, y, z);
+            return extent.getBlock(x, y, z);
         } catch (FaweException e) {
             handleException(e);
             return BlockTypes.AIR.getDefaultState();
@@ -422,7 +400,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public BaseBlock getFullBlock(BlockVector3 position) {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getFullBlock(position);
+            return extent.getFullBlock(position);
         } catch (FaweException e) {
             handleException(e);
             return BlockTypes.AIR.getDefaultState().toBaseBlock();
@@ -433,7 +411,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public BaseBlock getFullBlock(int x, int y, int z) {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getFullBlock(x, y, z);
+            return extent.getFullBlock(x, y, z);
         } catch (FaweException e) {
             handleException(e);
             return BlockTypes.AIR.getDefaultState().toBaseBlock();
@@ -444,7 +422,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public BiomeType getBiome(BlockVector3 position) {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getBiome(position);
+            return extent.getBiome(position);
         } catch (FaweException e) {
             handleException(e);
             return BiomeTypes.FOREST;
@@ -455,7 +433,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public BiomeType getBiomeType(int x, int y, int z) {
         limit.THROW_MAX_CHECKS();
         try {
-            return super.getBiomeType(x, y, z);
+            return extent.getBiomeType(x, y, z);
         } catch (FaweException e) {
             handleException(e);
             return BiomeTypes.FOREST;
@@ -470,7 +448,7 @@ public class LimitExtent extends AbstractDelegateExtent {
             limit.THROW_MAX_BLOCKSTATES();
         }
         try {
-            return super.setBlock(position, block);
+            return extent.setBlock(position, block);
         } catch (FaweException e) {
             handleException(e);
             return false;
@@ -484,7 +462,7 @@ public class LimitExtent extends AbstractDelegateExtent {
             limit.THROW_MAX_BLOCKSTATES();
         }
         try {
-            return super.setBlock(x, y, z, block);
+            return extent.setBlock(x, y, z, block);
         } catch (FaweException e) {
             handleException(e);
             return false;
@@ -494,9 +472,9 @@ public class LimitExtent extends AbstractDelegateExtent {
     @Override
     public boolean setTile(int x, int y, int z, CompoundTag tile) throws WorldEditException {
         limit.THROW_MAX_CHANGES();
-        limit.MAX_BLOCKSTATES();
+        limit.THROW_MAX_BLOCKSTATES();
         try {
-            return super.setTile(x, y, z, tile);
+            return extent.setTile(x, y, z, tile);
         } catch (FaweException e) {
             handleException(e);
             return false;
@@ -507,7 +485,7 @@ public class LimitExtent extends AbstractDelegateExtent {
     public boolean setBiome(BlockVector3 position, BiomeType biome) {
         limit.THROW_MAX_CHANGES();
         try {
-            return super.setBiome(position, biome);
+            return extent.setBiome(position, biome);
         } catch (FaweException e) {
             handleException(e);
             return false;
@@ -518,11 +496,41 @@ public class LimitExtent extends AbstractDelegateExtent {
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
         limit.THROW_MAX_CHANGES();
         try {
-            return super.setBiome(x, y, z, biome);
+            return extent.setBiome(x, y, z, biome);
         } catch (FaweException e) {
             handleException(e);
             return false;
         }
     }
 
+    public void setProcessing(boolean processing) {
+        this.processing = processing;
+    }
+
+    @Override
+    public IChunkSet processSet(IChunk chunk, IChunkGet get, IChunkSet set) {
+        if (!processing) {
+            return set;
+        }
+        int tiles = set.tiles().size();
+        int ents = set.entities().size() + set.getEntityRemoves().size();
+        limit.THROW_MAX_CHANGES(tiles + ents);
+        limit.THROW_MAX_BLOCKSTATES(tiles);
+        limit.THROW_MAX_ENTITIES(ents);
+        return set;
+    }
+
+    @Override
+    public Extent construct(final Extent child) {
+        if (extent != child) {
+            new ExtentTraverser<Extent>(this).setNext(child);
+        }
+        return this;
+    }
+
+    @Override
+    public ProcessorScope getScope() {
+        return ProcessorScope.READING_SET_BLOCKS;
+    }
+
 }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/StripNBTExtent.java

@@ -2,14 +2,12 @@ package com.fastasyncworldedit.core.extent;
 
 import com.fastasyncworldedit.core.extent.processor.ProcessorScope;
 import com.fastasyncworldedit.core.math.BlockVector3ChunkMap;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.fastasyncworldedit.core.queue.IChunk;
 import com.fastasyncworldedit.core.queue.IChunkGet;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.util.ExtentTraverser;
-import com.google.common.collect.ImmutableMap;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
@@ -20,16 +18,17 @@ import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.NbtValued;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
+import org.enginehub.linbus.tree.LinCompoundTag;
+import org.enginehub.linbus.tree.LinTag;
 
 import javax.annotation.Nullable;
-import java.util.HashMap;
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Collectors;
 
 public class StripNBTExtent extends AbstractDelegateExtent implements IBatchProcessor {
@@ -75,79 +74,82 @@ public class StripNBTExtent extends AbstractDelegateExtent implements IBatchProc
         if (!(block instanceof BaseBlock localBlock)) {
             return block;
         }
-        if (!localBlock.hasNbtData()) {
+        final LinCompoundTag nbt = localBlock.getNbt();
+        if (nbt == null) {
             return block;
         }
-        CompoundTag nbt = localBlock.getNbtData();
+        LinCompoundTag.Builder nbtBuilder = nbt.toBuilder();
-        Map<String, Tag<?, ?>> value = new HashMap<>(nbt.getValue());
         for (String key : strip) {
-            value.remove(key);
+            nbtBuilder.remove(key);
         }
-        return (B) localBlock.toBaseBlock(new CompoundTag(value));
+        return (B) localBlock.toBaseBlock(nbtBuilder.build());
     }
 
     public <T extends NbtValued> T stripEntityNBT(T entity) {
-        if (!entity.hasNbtData()) {
+        LinCompoundTag nbt = entity.getNbt();
+        if (nbt == null) {
             return entity;
         }
-        CompoundTag nbt = entity.getNbtData();
+        LinCompoundTag.Builder nbtBuilder = nbt.toBuilder();
-        Map<String, Tag<?, ?>> value = new HashMap<>(nbt.getValue());
         for (String key : strip) {
-            value.remove(key);
+            nbtBuilder.remove(key);
         }
-        entity.setNbtData(new CompoundTag(value));
+        entity.setNbt(nbtBuilder.build());
         return entity;
     }
 
     @Override
     public IChunkSet processSet(final IChunk chunk, final IChunkGet get, final IChunkSet set) {
-        Map<BlockVector3, CompoundTag> tiles = set.getTiles();
+        Map<BlockVector3, FaweCompoundTag> tiles = set.tiles();
-        Set<CompoundTag> entities = set.getEntities();
+        Collection<FaweCompoundTag> entities = set.entities();
         if (tiles.isEmpty() && entities.isEmpty()) {
             return set;
         }
         boolean isBv3ChunkMap = tiles instanceof BlockVector3ChunkMap;
-        for (final Map.Entry<BlockVector3, CompoundTag> entry : tiles.entrySet()) {
+        for (final var entry : tiles.entrySet()) {
-            ImmutableMap.Builder<String, Tag<?, ?>> map = ImmutableMap.builder();
+            FaweCompoundTag original = entry.getValue();
-            final AtomicBoolean isStripped = new AtomicBoolean(false);
+            FaweCompoundTag result = stripNbt(original);
-            entry.getValue().getValue().forEach((k, v) -> {
+            if (original != result) {
-                if (strip.contains(k.toLowerCase())) {
-                    isStripped.set(true);
-                } else {
-                    map.put(k, v);
-                }
-            });
-            if (isStripped.get()) {
                 if (isBv3ChunkMap) {
                     // Replace existing value with stripped value
-                    tiles.put(entry.getKey(), new CompoundTag(map.build()));
+                    tiles.put(entry.getKey(), result);
                 } else {
-                    entry.setValue(new CompoundTag(map.build()));
+                    entry.setValue(result);
                 }
             }
         }
-        Set<CompoundTag> stripped = new HashSet<>();
+        Set<FaweCompoundTag> stripped = new HashSet<>();
-        Iterator<CompoundTag> iterator = entities.iterator();
+        Iterator<FaweCompoundTag> iterator = entities.iterator();
         while (iterator.hasNext()) {
-            CompoundTag entity = iterator.next();
+            FaweCompoundTag original = iterator.next();
-            ImmutableMap.Builder<String, Tag<?, ?>> map = ImmutableMap.builder();
+            FaweCompoundTag result = stripNbt(original);
-            final AtomicBoolean isStripped = new AtomicBoolean(false);
+            if (original != result) {
-            entity.getValue().forEach((k, v) -> {
-                if (strip.contains(k.toUpperCase(Locale.ROOT))) {
-                    isStripped.set(true);
-                } else {
-                    map.put(k, v);
-                }
-            });
-            if (isStripped.get()) {
                 iterator.remove();
-                stripped.add(new CompoundTag(map.build()));
+                stripped.add(result);
             }
         }
-        set.getEntities().addAll(stripped);
+        // this relies on entities.addAll(...) not throwing an exception if empty+unmodifiable (=> stripped is empty too)
+        entities.addAll(stripped);
         return set;
     }
 
+    private FaweCompoundTag stripNbt(
+            FaweCompoundTag compoundTag
+    ) {
+        LinCompoundTag.Builder builder = LinCompoundTag.builder();
+        boolean stripped = false;
+        for (var entry : compoundTag.linTag().value().entrySet()) {
+            String k = entry.getKey();
+            LinTag<?> v = entry.getValue();
+            if (strip.contains(k.toLowerCase(Locale.ROOT))) {
+                stripped = true;
+            } else {
+                builder.put(k, v);
+            }
+        }
+        return stripped ? FaweCompoundTag.of(builder.build()) : compoundTag;
+    }
+
     @Nullable
     @Override
     public Extent construct(final Extent child) {

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/CPUOptimizedClipboard.java

@@ -2,9 +2,11 @@ package com.fastasyncworldedit.core.extent.clipboard;
 
 import com.fastasyncworldedit.core.jnbt.streamer.IntValueReader;
 import com.fastasyncworldedit.core.math.IntTriple;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.IntTag;
 import com.sk89q.jnbt.Tag;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -175,6 +177,12 @@ public class CPUOptimizedClipboard extends LinearClipboard {
         return true;
     }
 
+    @Override
+    public boolean tile(final int x, final int y, final int z, final FaweCompoundTag tile) throws WorldEditException {
+        // TODO replace
+        return setTile(x, y, z, new CompoundTag(tile.linTag()));
+    }
+
     private boolean setTile(int index, CompoundTag tag) {
         final Map<String, Tag<?, ?>> values = new HashMap<>(tag.getValue());
         values.remove("x");

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/DiskOptimizedClipboard.java

@@ -6,15 +6,18 @@ import com.fastasyncworldedit.core.internal.exception.FaweClipboardVersionMismat
 import com.fastasyncworldedit.core.internal.io.ByteBufferInputStream;
 import com.fastasyncworldedit.core.jnbt.streamer.IntValueReader;
 import com.fastasyncworldedit.core.math.IntTriple;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.util.MainUtil;
+import com.fastasyncworldedit.core.util.NbtUtils;
 import com.fastasyncworldedit.core.util.ReflectionUtils;
+import com.google.common.collect.Collections2;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.DoubleTag;
-import com.sk89q.jnbt.IntTag;
 import com.sk89q.jnbt.ListTag;
 import com.sk89q.jnbt.NBTInputStream;
 import com.sk89q.jnbt.NBTOutputStream;
 import com.sk89q.jnbt.Tag;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
@@ -28,6 +31,8 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import org.apache.logging.log4j.Logger;
+import org.enginehub.linbus.tree.LinCompoundTag;
+import org.enginehub.linbus.tree.LinTagType;
 
 import java.io.ByteArrayOutputStream;
 import java.io.DataInputStream;
@@ -64,7 +69,7 @@ public class DiskOptimizedClipboard extends LinearClipboard {
     private static final int VERSION_2_HEADER_SIZE = 27; // Header size of "version 2" i.e. when NBT/entities could be saved
     private static final Map<String, LockHolder> LOCK_HOLDER_CACHE = new ConcurrentHashMap<>();
 
-    private final HashMap<IntTriple, CompoundTag> nbtMap;
+    private final HashMap<IntTriple, FaweCompoundTag> nbtMap;
     private final File file;
     private final int headerSize;
 
@@ -248,12 +253,12 @@ public class DiskOptimizedClipboard extends LinearClipboard {
         try (NBTInputStream nbtIS = new NBTInputStream(MainUtil.getCompressedIS(new ByteBufferInputStream(tmp)))) {
             Iterator<CompoundTag> iter = nbtIS.toIterator();
             while (nbtCount > 0 && iter.hasNext()) { // TileEntities are stored "before" entities
-                CompoundTag tag = iter.next();
+                LinCompoundTag tag = iter.next().toLinTag();
-                int x = tag.getInt("x");
+                int x = tag.getTag("x", LinTagType.intTag()).valueAsInt();
-                int y = tag.getInt("y");
+                int y = tag.getTag("y", LinTagType.intTag()).valueAsInt();
-                int z = tag.getInt("z");
+                int z = tag.getTag("z", LinTagType.intTag()).valueAsInt();
                 IntTriple pos = new IntTriple(x, y, z);
-                nbtMap.put(pos, tag);
+                nbtMap.put(pos, FaweCompoundTag.of(tag));
                 nbtCount--;
             }
             while (entitiesCount > 0 && iter.hasNext()) {
@@ -559,8 +564,8 @@ public class DiskOptimizedClipboard extends LinearClipboard {
             ))) {
                 if (!nbtMap.isEmpty()) {
                     try {
-                        for (CompoundTag tag : nbtMap.values()) {
+                        for (FaweCompoundTag tag : nbtMap.values()) {
-                            nbtOS.writeTag(tag);
+                            nbtOS.writeTag(new CompoundTag(tag.linTag()));
                         }
                     } catch (IOException e) {
                         e.printStackTrace();
@@ -638,7 +643,7 @@ public class DiskOptimizedClipboard extends LinearClipboard {
 
     @Override
     public Collection<CompoundTag> getTileEntities() {
-        return nbtMap.values();
+        return Collections2.transform(nbtMap.values(), fct -> new CompoundTag(fct.linTag()));
     }
 
     public int getIndex(int x, int y, int z) {
@@ -656,10 +661,10 @@ public class DiskOptimizedClipboard extends LinearClipboard {
 
     private BaseBlock toBaseBlock(BlockState state, int i) {
         if (state.getMaterial().hasContainer() && !nbtMap.isEmpty()) {
-            CompoundTag nbt;
+            FaweCompoundTag nbt;
             if (nbtMap.size() < 4) {
                 nbt = null;
-                for (Map.Entry<IntTriple, CompoundTag> entry : nbtMap.entrySet()) {
+                for (Map.Entry<IntTriple, FaweCompoundTag> entry : nbtMap.entrySet()) {
                     IntTriple key = entry.getKey();
                     int index = getIndex(key.x(), key.y(), key.z());
                     if (index == i) {
@@ -674,15 +679,15 @@ public class DiskOptimizedClipboard extends LinearClipboard {
                 int x = newI - z * getWidth();
                 nbt = nbtMap.get(new IntTriple(x, y, z));
             }
-            return state.toBaseBlock(nbt);
+            return state.toBaseBlock(nbt == null ? null : nbt.linTag());
         }
         return state.toBaseBlock();
     }
 
     private BaseBlock toBaseBlock(BlockState state, int x, int y, int z) {
         if (state.getMaterial().hasContainer() && !nbtMap.isEmpty()) {
-            CompoundTag nbt = nbtMap.get(new IntTriple(x, y, z));
+            FaweCompoundTag nbt = nbtMap.get(new IntTriple(x, y, z));
-            return state.toBaseBlock(nbt);
+            return state.toBaseBlock(nbt == null ? null : nbt.linTag());
         }
         return state.toBaseBlock();
     }
@@ -709,12 +714,8 @@ public class DiskOptimizedClipboard extends LinearClipboard {
     }
 
     @Override
-    public boolean setTile(int x, int y, int z, CompoundTag tag) {
+    public boolean tile(final int x, final int y, final int z, final FaweCompoundTag tile) throws WorldEditException {
-        final Map<String, Tag<?, ?>> values = new HashMap<>(tag.getValue());
+        nbtMap.put(new IntTriple(x, y, z), NbtUtils.withPosition(tile, x, y, z));
-        values.put("x", new IntTag(x));
-        values.put("y", new IntTag(y));
-        values.put("z", new IntTag(z));
-        nbtMap.put(new IntTriple(x, y, z), new CompoundTag(values));
         return true;
     }
 

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/EmptyClipboard.java

@@ -1,7 +1,7 @@
 package com.fastasyncworldedit.core.extent.clipboard;
 
 import com.fastasyncworldedit.core.extent.processor.heightmap.HeightMapType;
-import com.sk89q.jnbt.CompoundTag;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
@@ -84,7 +84,8 @@ public final class EmptyClipboard implements Clipboard {
         return false;
     }
 
-    public boolean setTile(int x, int y, int z, @Nonnull CompoundTag tile) throws WorldEditException {
+    @Override
+    public boolean tile(final int x, final int y, final int z, final FaweCompoundTag tile) throws WorldEditException {
         return false;
     }
 

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/LinearClipboard.java

@@ -57,6 +57,10 @@ public abstract class LinearClipboard extends SimpleClipboard {
      */
     public abstract void streamBiomes(IntValueReader task);
 
+    /**
+     * @deprecated will be removed as it is unused and uses outdated types
+     */
+    @Deprecated(forRemoval = true, since = "TODO")
     public abstract Collection<CompoundTag> getTileEntities();
 
     @Override

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/MemoryOptimizedClipboard.java

@@ -3,10 +3,12 @@ package com.fastasyncworldedit.core.extent.clipboard;
 import com.fastasyncworldedit.core.configuration.Settings;
 import com.fastasyncworldedit.core.jnbt.streamer.IntValueReader;
 import com.fastasyncworldedit.core.math.IntTriple;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.util.MainUtil;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.IntTag;
 import com.sk89q.jnbt.Tag;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -262,6 +264,12 @@ public class MemoryOptimizedClipboard extends LinearClipboard {
         return true;
     }
 
+    @Override
+    public boolean tile(final int x, final int y, final int z, final FaweCompoundTag tile) throws WorldEditException {
+        // TODO replace
+        return setTile(x, y, z, new CompoundTag(tile.linTag()));
+    }
+
     @Override
     public <B extends BlockStateHolder<B>> boolean setBlock(int x, int y, int z, B block) {
         return setBlock(getIndex(x, y, z), block);

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/ReadOnlyClipboard.java

@@ -1,7 +1,7 @@
 package com.fastasyncworldedit.core.extent.clipboard;
 
 import com.fastasyncworldedit.core.Fawe;
-import com.sk89q.jnbt.CompoundTag;
+import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
@@ -106,7 +106,7 @@ public abstract class ReadOnlyClipboard extends SimpleClipboard {
     }
 
     @Override
-    public boolean setTile(int x, int y, int z, CompoundTag tag) {
+    public boolean tile(int x, int y, int z, FaweCompoundTag tag) {
         throw new UnsupportedOperationException("Clipboard is immutable");
     }