*

A tribute to Jesse

buildSrc/src/main/kotlin/CommonConfig.kt

@@ -21,7 +21,8 @@ fun Project.applyCommonConfiguration() {
     }
     configurations.all {
         resolutionStrategy {
-            cacheChangingModulesFor(5, "minutes")
+            cacheChangingModulesFor(10, "minutes")
         }
     }
+
 }

buildSrc/src/main/kotlin/LibsConfig.kt

@@ -33,6 +33,7 @@ fun Project.applyLibrariesConfiguration() {
             exclude(dependency("com.google.guava:guava"))
             exclude(dependency("com.google.code.gson:gson"))
             exclude(dependency("org.checkerframework:checker-qual"))
+            exclude(dependency("org.slf4j:slf4j-api"))
         }
 
         relocate("net.kyori.text", "com.sk89q.worldedit.util.formatting.text")

config/checkstyle/import-control.xml

@@ -42,6 +42,7 @@
     <allow pkg="org.mozilla.javascript"/>
     <allow pkg="de.schlichtherle"/>
     <allow pkg="com.google.auto"/>
+    <allow pkg="it.unimi.dsi.fastutil"/>
 
     <subpackage name="bukkit">
       <allow pkg="org.bukkit"/>

worldedit-bukkit/build.gradle.kts

@@ -40,9 +40,7 @@ dependencies {
     "implementation"("io.papermc:paperlib:1.0.2")
     "compileOnly"("com.sk89q:dummypermscompat:1.10")
     "implementation"("org.apache.logging.log4j:log4j-slf4j-impl:2.8.1")
-    "testCompile"("org.mockito:mockito-core:1.9.0-rc1") {
-        exclude("junit", "junit")
-    }
+    "testCompile"("org.mockito:mockito-core:1.9.0-rc1")
     "compileOnly"("com.sk89q.worldguard:worldguard-bukkit:7.0.0") {
         exclude("com.sk89q.worldedit", "worldedit-bukkit")
         exclude("com.sk89q.worldedit", "worldedit-core")
@@ -61,6 +59,9 @@ dependencies {
     "implementation"("com.thevoxelbox.voxelsniper:voxelsniper:5.171.0") { isTransitive = false }
     "implementation"("com.comphenix.protocol:ProtocolLib-API:4.4.0-SNAPSHOT") { isTransitive = false }
     "implementation"("com.wasteofplastic:askyblock:3.0.8.2") { isTransitive = false }
+    "compileOnly"("com.github.intellectualsites.plotsquared:PlotSquared-API:latest") {
+        isTransitive = false
+    }
 }
 
 tasks.named<Copy>("processResources") {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/FaweBukkit.java

@@ -20,6 +20,7 @@ import com.boydti.fawe.bukkit.regions.ResidenceFeature;
 import com.boydti.fawe.bukkit.regions.TownyFeature;
 import com.boydti.fawe.bukkit.regions.Worldguard;
 import com.boydti.fawe.bukkit.regions.WorldguardFlag;
+import com.boydti.fawe.bukkit.regions.plotquared.PlotSquaredFeature;
 import com.boydti.fawe.bukkit.util.BukkitTaskMan;
 import com.boydti.fawe.bukkit.util.ItemUtil;
 import com.boydti.fawe.bukkit.util.VaultUtil;
@@ -29,6 +30,7 @@ import com.boydti.fawe.object.FaweCommand;
 import com.boydti.fawe.regions.FaweMaskManager;
 import com.boydti.fawe.util.Jars;
 import com.boydti.fawe.util.TaskManager;
+import com.boydti.fawe.util.WEManager;
 import com.boydti.fawe.util.image.ImageViewer;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.world.World;
@@ -84,6 +86,7 @@ public class FaweBukkit implements IFawe, Listener {
             if (PaperLib.isPaper() && Settings.IMP.EXPERIMENTAL.DYNAMIC_CHUNK_RENDERING > 1) {
                 new RenderListener(plugin);
             }
+            WEManager.IMP.managers.add(new PlotSquaredFeature());
         } catch (final Throwable e) {
             e.printStackTrace();
             Bukkit.getServer().shutdown();
@@ -205,6 +208,15 @@ public class FaweBukkit implements IFawe, Listener {
             Player player = Bukkit.getPlayer(name);
             return player != null ? BukkitAdapter.adapt(player) : null;
         }
+        if (obj.getClass() == UUID.class) {
+            UUID uuid = (UUID) obj;
+            com.sk89q.worldedit.entity.Player existing = Fawe.get().getCachedPlayer(uuid);
+            if (existing != null) {
+                return existing;
+            }
+            Player player = Bukkit.getPlayer(uuid);
+            return player != null ? BukkitAdapter.adapt(player) : null;
+        }
         return null;
     }
 

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_14/DataConverters_1_14_R4.java

@@ -1,3 +1,22 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
 package com.boydti.fawe.bukkit.adapter.mc1_14;
 
 import com.google.common.collect.Lists;

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/listener/CFIPacketListener.java

@@ -21,7 +21,7 @@ import com.sk89q.worldedit.event.platform.BlockInteractEvent;
 import com.sk89q.worldedit.event.platform.Interaction;
 import com.sk89q.worldedit.extension.platform.PlatformManager;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.world.block.BlockStateHolder;
+import com.sk89q.worldedit.world.block.BlockState;
 import java.lang.reflect.InvocationTargetException;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
@@ -239,14 +239,14 @@ public class CFIPacketListener implements Listener {
         platform.handleBlockInteract(toCall);
         if (toCall.isCancelled() || action == Interaction.OPEN) {
             BlockVector3 realPos = pt.add(gen.getOrigin().toBlockPoint());
-            BlockStateHolder block = gen.getBlock(pt);
+            BlockState block = gen.getBlock(pt);
             sendBlockChange(plr, realPos, block);
             return true;
         }
         return false;
     }
 
-    private void sendBlockChange(Player plr, BlockVector3 pt, BlockStateHolder block) {
+    private void sendBlockChange(Player plr, BlockVector3 pt, BlockState block) {
         plr.sendBlockChange(new Location(plr.getWorld(), pt.getBlockX(), pt.getBlockY(), pt.getBlockZ()), BukkitAdapter.adapt(block));
     }
 

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/CFIRedirect.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.github.intellectualsites.plotsquared.commands.Command;
 import com.github.intellectualsites.plotsquared.commands.CommandDeclaration;

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/FaweChunkManager.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.boydti.fawe.util.EditSessionBuilder;
 import com.boydti.fawe.util.TaskManager;

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/FaweLocalBlockQueue.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.FaweAPI;

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/FaweSchematicHandler.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.boydti.fawe.FaweCache;
 import com.boydti.fawe.object.clipboard.ReadOnlyClipboard;

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/FaweTrim.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.boydti.fawe.util.TaskManager;
 import com.github.intellectualsites.plotsquared.commands.CommandDeclaration;
@@ -6,7 +6,6 @@ import com.github.intellectualsites.plotsquared.plot.commands.CommandCategory;
 import com.github.intellectualsites.plotsquared.plot.commands.RequiredType;
 import com.github.intellectualsites.plotsquared.plot.commands.SubCommand;
 import com.github.intellectualsites.plotsquared.plot.config.Captions;
-import com.github.intellectualsites.plotsquared.plot.object.Location;
 import com.github.intellectualsites.plotsquared.plot.object.PlotPlayer;
 import com.github.intellectualsites.plotsquared.plot.util.WorldUtil;
 

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/MoveTo512.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.github.intellectualsites.plotsquared.commands.CommandDeclaration;
 import com.github.intellectualsites.plotsquared.plot.commands.CommandCategory;

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/PlotRegionFilter.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/PlotSetBiome.java

@@ -1,4 +1,4 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.util.EditSessionBuilder;
@@ -20,6 +20,7 @@ import com.github.intellectualsites.plotsquared.plot.util.StringMan;
 import com.github.intellectualsites.plotsquared.plot.util.WorldUtil;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
@@ -31,6 +32,7 @@ import java.util.Collection;
 import java.util.HashSet;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ThreadLocalRandom;
+import org.bukkit.Bukkit;
 
 @CommandDeclaration(
         command = "generatebiome",
@@ -65,22 +67,18 @@ public class PlotSetBiome extends Command {
             MainUtil.sendMessage(player, Captions.SUBCOMMAND_SET_OPTIONS_HEADER.toString() + biomes);
             return CompletableFuture.completedFuture(false);
         }
-        confirm.run(this, new Runnable() {
-            @Override
-            public void run() {
+        confirm.run(this, () -> {
             if (plot.getRunning() != 0) {
                 Captions.WAIT_FOR_TIMER.send(player);
                 return;
             }
             plot.addRunning();
-                TaskManager.IMP.async(new Runnable() {
-                    @Override
-                    public void run() {
-                        EditSession session = new EditSessionBuilder(plot.getArea().worldname)
+            TaskManager.IMP.async(() -> {
+                EditSession session = new EditSessionBuilder(BukkitAdapter.adapt(Bukkit.getWorld(plot.getArea().worldname)))
                         .autoQueue(false)
                         .checkMemory(false)
                         .allowedRegionsEverywhere()
-                                .player(Fawe.imp().wrap(player.getName()))
+                        .player(Fawe.imp().wrap(player.getUUID()))
                         .limitUnlimited()
                         .build();
                 long seed = ThreadLocalRandom.current().nextLong();
@@ -90,9 +88,7 @@ public class PlotSetBiome extends Command {
                 }
                 session.flushQueue();
                 plot.removeRunning();
-                    }
             });
-            }
         }, null);
 
         return CompletableFuture.completedFuture(true);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/regions/plotquared/PlotSquaredFeature.java

@@ -1,10 +1,8 @@
-package com.boydti.fawe.regions.general.plot;
+package com.boydti.fawe.bukkit.regions.plotquared;
 
 import com.boydti.fawe.Fawe;
-import com.boydti.fawe.FaweAPI;
 import com.boydti.fawe.regions.FaweMask;
 import com.boydti.fawe.regions.FaweMaskManager;
-import com.boydti.fawe.regions.SimpleRegion;
 import com.boydti.fawe.regions.general.RegionFilter;
 import com.github.intellectualsites.plotsquared.plot.PlotSquared;
 import com.github.intellectualsites.plotsquared.plot.commands.MainCommand;
@@ -22,12 +20,16 @@ import com.github.intellectualsites.plotsquared.plot.util.SchematicHandler;
 import com.github.intellectualsites.plotsquared.plot.util.UUIDHandler;
 import com.github.intellectualsites.plotsquared.plot.util.block.GlobalBlockQueue;
 import com.github.intellectualsites.plotsquared.plot.util.block.QueueProvider;
+import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.regions.AbstractRegion;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.regions.RegionOperationException;
 import java.util.HashSet;
 import java.util.UUID;
+import org.bukkit.Bukkit;
 
 public class PlotSquaredFeature extends FaweMaskManager {
     public PlotSquaredFeature() {
@@ -89,7 +91,7 @@ public class PlotSquaredFeature extends FaweMaskManager {
         }
     }
 
-    public boolean isAllowed(com.sk89q.worldedit.entity.Player player, Plot plot, MaskType type) {
+    public boolean isAllowed(Player player, Plot plot, MaskType type) {
         if (plot == null) {
             return false;
         }
@@ -114,14 +116,14 @@ public class PlotSquaredFeature extends FaweMaskManager {
                 }
             }
         }
-        if (regions.size() == 0) {
+        if (regions.isEmpty()) {
             return null;
         }
         PlotArea area = pp.getApplicablePlotArea();
         int min = area != null ? area.MIN_BUILD_HEIGHT : 0;
         int max = area != null ? Math.min(255, area.MAX_BUILD_HEIGHT) : 255;
         final HashSet<com.boydti.fawe.object.RegionWrapper> faweRegions = new HashSet<>();
-        for (final RegionWrapper current : regions) {
+        for (RegionWrapper current : regions) {
             faweRegions.add(new com.boydti.fawe.object.RegionWrapper(current.minX, current.maxX, min, max, current.minZ, current.maxZ));
         }
         final RegionWrapper region = regions.iterator().next();
@@ -136,7 +138,27 @@ public class PlotSquaredFeature extends FaweMaskManager {
         if (regions.size() == 1) {
             maskedRegion = new CuboidRegion(pos1, pos2);
         } else {
-            maskedRegion = new SimpleRegion(FaweAPI.getWorld(area.worldname), pos1, pos2) {
+            maskedRegion = new AbstractRegion(BukkitAdapter.adapt(Bukkit.getWorld(area.worldname))) {
+                @Override
+                public BlockVector3 getMinimumPoint() {
+                    return pos1;
+                }
+
+                @Override
+                public BlockVector3 getMaximumPoint() {
+                    return pos2;
+                }
+
+                @Override
+                public void expand(BlockVector3... changes) throws RegionOperationException {
+                    throw new UnsupportedOperationException("Region is immutable");
+                }
+
+                @Override
+                public void contract(BlockVector3... changes) throws RegionOperationException {
+                    throw new UnsupportedOperationException("Region is immutable");
+                }
+
                 @Override
                 public boolean contains(int x, int y, int z) {
                     return WEManager.maskContains(regions, x, y, z);
@@ -146,12 +168,17 @@ public class PlotSquaredFeature extends FaweMaskManager {
                 public boolean contains(int x, int z) {
                     return WEManager.maskContains(regions, x, z);
                 }
+
+                @Override
+                public boolean contains(BlockVector3 position) {
+                    return contains(position.getBlockX(), position.getBlockY(), position.getBlockZ());
+                }
             };
         }
 
         return new FaweMask(maskedRegion) {
             @Override
-            public boolean isValid(com.sk89q.worldedit.entity.Player player, MaskType type) {
+            public boolean isValid(Player player, MaskType type) {
                 if (Settings.Done.RESTRICT_BUILDING && Flags.DONE.isSet(finalPlot)) {
                     return false;
                 }

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

@@ -34,12 +34,22 @@ import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
+import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.entity.EntityType;
+import com.sk89q.worldedit.world.entity.EntityTypes;
 import com.sk89q.worldedit.world.gamemode.GameMode;
+import com.sk89q.worldedit.world.gamemode.GameModes;
 import com.sk89q.worldedit.world.item.ItemType;
+import com.sk89q.worldedit.world.item.ItemTypes;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -82,7 +92,7 @@ public enum BukkitAdapter {
      * @return If they are equal
      */
     public static boolean equals(BlockType blockType, Material type) {
-        return getAdapter().equals(blockType, type);
+        return Objects.equals(blockType.getId(), type.getKey().toString());
     }
 
     /**
@@ -95,7 +105,15 @@ public enum BukkitAdapter {
      * @return a wrapped Bukkit world
      */
     public static BukkitWorld asBukkitWorld(World world) {
-        return getAdapter().asBukkitWorld(world);
+        if (world instanceof BukkitWorld) {
+            return (BukkitWorld) world;
+        } else {
+            BukkitWorld bukkitWorld = WorldEditPlugin.getInstance().getInternalPlatform().matchWorld(world);
+            if (bukkitWorld == null) {
+                throw new RuntimeException("World '" + world.getName() + "' has no matching version in Bukkit");
+            }
+            return bukkitWorld;
+        }
     }
 
     /**
@@ -105,11 +123,8 @@ public enum BukkitAdapter {
      * @return a WorldEdit world
      */
     public static World adapt(org.bukkit.World world) {
-        return getAdapter().adapt(world);
-    }
-
-    public static org.bukkit.World adapt(World world) {
-        return getAdapter().adapt(world);
+        checkNotNull(world);
+        return new BukkitWorld(world);
     }
 
     /**
@@ -119,7 +134,7 @@ public enum BukkitAdapter {
      * @return The WorldEdit player
      */
     public static BukkitPlayer adapt(Player player) {
-        return getAdapter().adapt(player);
+        return WorldEditPlugin.getInstance().wrapPlayer(player);
     }
 
     /**
@@ -129,7 +144,27 @@ public enum BukkitAdapter {
      * @return The Bukkit player
      */
     public static Player adapt(com.sk89q.worldedit.entity.Player player) {
-        return getAdapter().adapt(player);
+        return ((BukkitPlayer) player).getPlayer();
+    }
+
+    /**
+     * Create a Bukkit world from a WorldEdit world.
+     *
+     * @param world the WorldEdit world
+     * @return a Bukkit world
+     */
+    public static org.bukkit.World adapt(World world) {
+        checkNotNull(world);
+        if (world instanceof BukkitWorld) {
+            return ((BukkitWorld) world).getWorld();
+        } else {
+            org.bukkit.World match = Bukkit.getServer().getWorld(world.getName());
+            if (match != null) {
+                return match;
+            } else {
+                throw new IllegalArgumentException("Can't find a Bukkit world for " + world.getName());
+            }
+        }
     }
 
     /**
@@ -140,7 +175,12 @@ public enum BukkitAdapter {
      */
     public static Location adapt(org.bukkit.Location location) {
         checkNotNull(location);
-        return getAdapter().adapt(location);
+        Vector3 position = asVector(location);
+        return new com.sk89q.worldedit.util.Location(
+                adapt(location.getWorld()),
+                position,
+                location.getYaw(),
+                location.getPitch());
     }
 
     /**
@@ -151,7 +191,12 @@ public enum BukkitAdapter {
      */
     public static org.bukkit.Location adapt(Location location) {
         checkNotNull(location);
-        return getAdapter().adapt(location);
+        Vector3 position = location;
+        return new org.bukkit.Location(
+                adapt((World) location.getExtent()),
+                position.getX(), position.getY(), position.getZ(),
+                location.getYaw(),
+                location.getPitch());
     }
 
     /**
@@ -162,7 +207,11 @@ public enum BukkitAdapter {
      * @return a Bukkit location
      */
     public static org.bukkit.Location adapt(org.bukkit.World world, Vector3 position) {
-        return getAdapter().adapt(world, position);
+        checkNotNull(world);
+        checkNotNull(position);
+        return new org.bukkit.Location(
+                world,
+                position.getX(), position.getY(), position.getZ());
     }
 
     /**
@@ -175,7 +224,9 @@ public enum BukkitAdapter {
     public static org.bukkit.Location adapt(org.bukkit.World world, BlockVector3 position) {
         checkNotNull(world);
         checkNotNull(position);
-        return getAdapter().adapt(world, position);
+        return new org.bukkit.Location(
+                world,
+                position.getX(), position.getY(), position.getZ());
     }
 
     /**
@@ -188,7 +239,11 @@ public enum BukkitAdapter {
     public static org.bukkit.Location adapt(org.bukkit.World world, Location location) {
         checkNotNull(world);
         checkNotNull(location);
-        return getAdapter().adapt(world, location);
+        return new org.bukkit.Location(
+                world,
+                location.getX(), location.getY(), location.getZ(),
+                location.getYaw(),
+                location.getPitch());
     }
 
     /**
@@ -221,7 +276,7 @@ public enum BukkitAdapter {
      */
     public static Entity adapt(org.bukkit.entity.Entity entity) {
         checkNotNull(entity);
-        return getAdapter().adapt(entity);
+        return new BukkitEntity(entity);
     }
 
     /**
@@ -232,7 +287,10 @@ public enum BukkitAdapter {
      */
     public static Material adapt(ItemType itemType) {
         checkNotNull(itemType);
-        return getAdapter().adapt(itemType);
+        if (!itemType.getId().startsWith("minecraft:")) {
+            throw new IllegalArgumentException("Bukkit only supports Minecraft items");
+        }
+        return Material.getMaterial(itemType.getId().substring(10).toUpperCase(Locale.ROOT));
     }
 
     /**
@@ -241,8 +299,12 @@ public enum BukkitAdapter {
      * @param blockType The WorldEdit BlockType
      * @return The Bukkit Material
      */
-    public static Material adapt(@NotNull BlockType blockType) {
-        return getAdapter().adapt(blockType);
+    public static Material adapt(BlockType blockType) {
+        checkNotNull(blockType);
+        if (!blockType.getId().startsWith("minecraft:")) {
+            throw new IllegalArgumentException("Bukkit only supports Minecraft blocks");
+        }
+        return Material.getMaterial(blockType.getId().substring(10).toUpperCase(Locale.ROOT));
     }
 
     /**
@@ -253,7 +315,7 @@ public enum BukkitAdapter {
      */
     public static GameMode adapt(org.bukkit.GameMode gameMode) {
         checkNotNull(gameMode);
-        return getAdapter().adapt(gameMode);
+        return GameModes.get(gameMode.name().toLowerCase(Locale.ROOT));
     }
 
     /**
@@ -263,11 +325,18 @@ public enum BukkitAdapter {
      * @return WorldEdit BiomeType
      */
     public static BiomeType adapt(Biome biome) {
-        return getAdapter().adapt(biome);
+        return BiomeTypes.get(biome.name().toLowerCase(Locale.ROOT));
     }
 
     public static Biome adapt(BiomeType biomeType) {
-        return getAdapter().adapt(biomeType);
+        if (!biomeType.getId().startsWith("minecraft:")) {
+            throw new IllegalArgumentException("Bukkit only supports vanilla biomes");
+        }
+        try {
+            return Biome.valueOf(biomeType.getId().substring(10).toUpperCase(Locale.ROOT));
+        } catch (IllegalArgumentException e) {
+            return null;
+        }
     }
 
     /**
@@ -277,11 +346,18 @@ public enum BukkitAdapter {
      * @return WorldEdit EntityType
      */
     public static EntityType adapt(org.bukkit.entity.EntityType entityType) {
-        return getAdapter().adapt(entityType);
+        final String name = entityType.getName();
+        if (name == null) {
+            return null;
+        }
+        return EntityTypes.get(name.toLowerCase(Locale.ROOT));
     }
 
     public static org.bukkit.entity.EntityType adapt(EntityType entityType) {
-        return getAdapter().adapt(entityType);
+        if (!entityType.getId().startsWith("minecraft:")) {
+            throw new IllegalArgumentException("Bukkit only supports vanilla entities");
+        }
+        return org.bukkit.entity.EntityType.fromName(entityType.getId().substring(10));
     }
 
     /**
@@ -290,8 +366,12 @@ public enum BukkitAdapter {
      * @param material The material
      * @return The blocktype
      */
-    public static BlockType asBlockType(@NotNull Material material) {
-        return getAdapter().asBlockType(material);
+    public static BlockType asBlockType(Material material) {
+        checkNotNull(material);
+        if (!material.isBlock()) {
+            throw new IllegalArgumentException(material.getKey().toString() + " is not a block!");
+        }
+        return BlockTypes.get(material.getKey().toString());
     }
 
     /**
@@ -302,9 +382,13 @@ public enum BukkitAdapter {
      */
     public static ItemType asItemType(Material material) {
         checkNotNull(material);
-        return getAdapter().asItemType(material);
+        if (!material.isItem()) {
+            throw new IllegalArgumentException(material.getKey().toString() + " is not an item!");
+        }
+        return ItemTypes.get(material.getKey().toString());
     }
 
+    private static Map<String, BlockState> blockStateCache = new HashMap<>();
 
     /**
      * Create a WorldEdit BlockState from a Bukkit BlockData
@@ -320,6 +404,8 @@ public enum BukkitAdapter {
         return getAdapter().adapt(material);
     }
 
+    private static Map<String, BlockData> blockDataCache = new HashMap<>();
+
     /**
      * Create a Bukkit BlockData from a WorldEdit BlockStateHolder
      *
@@ -339,7 +425,7 @@ public enum BukkitAdapter {
     public static BlockState asBlockState(ItemStack itemStack) throws WorldEditException {
         checkNotNull(itemStack);
         if (itemStack.getType().isBlock()) {
-            return getAdapter().asBlockState(itemStack);
+            return adapt(itemStack.getType().createBlockData());
         } else {
             throw new NotABlockException();
         }
@@ -353,7 +439,10 @@ public enum BukkitAdapter {
      */
     public static BaseItemStack adapt(ItemStack itemStack) {
         checkNotNull(itemStack);
-        return getAdapter().adapt(itemStack);
+        if (WorldEditPlugin.getInstance().getBukkitImplAdapter() != null) {
+            return WorldEditPlugin.getInstance().getBukkitImplAdapter().adapt(itemStack);
+        }
+        return new BaseItemStack(ItemTypes.get(itemStack.getType().getKey().toString()), itemStack.getAmount());
     }
 
     /**
@@ -364,6 +453,9 @@ public enum BukkitAdapter {
      */
     public static ItemStack adapt(BaseItemStack item) {
         checkNotNull(item);
-        return getAdapter().adapt(item);
+        if (WorldEditPlugin.getInstance().getBukkitImplAdapter() != null) {
+            return WorldEditPlugin.getInstance().getBukkitImplAdapter().adapt(item);
+        }
+        return new ItemStack(adapt(item.getType()), item.getAmount());
     }
 }

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

@@ -164,7 +164,7 @@ public class BukkitBlockCommandSender extends AbstractNonPlayerActor implements
 
             @Override
             public boolean isPersistent() {
-                return true;
+                return false;
             }
 
             @Override

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

@@ -35,8 +35,9 @@ import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
-
+import java.util.Map;
 import java.util.OptionalInt;
+import javax.annotation.Nullable;
 import org.bukkit.Chunk;
 import org.bukkit.Location;
 import org.bukkit.World;
@@ -45,11 +46,6 @@ import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
-import java.util.Map;
-import java.util.OptionalInt;
-
-import javax.annotation.Nullable;
-
 /**
  * An interface for adapters of various Bukkit implementations.
  */
@@ -202,7 +198,6 @@ public interface BukkitImplAdapter<T> extends IBukkitAdapter {
      * @param state The block state
      * @return the internal ID of the state
      */
-
     default OptionalInt getInternalBlockStateId(BlockState state) {
         return OptionalInt.empty();
     }

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

@@ -2,7 +2,6 @@ package com.sk89q.worldedit.bukkit.adapter;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
-import com.sk89q.worldedit.NotABlockException;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.BukkitEntity;
 import com.sk89q.worldedit.bukkit.BukkitItemStack;
@@ -21,9 +20,6 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.entity.EntityType;
-import com.sk89q.worldedit.world.entity.EntityTypes;
-import com.sk89q.worldedit.world.gamemode.GameMode;
-import com.sk89q.worldedit.world.gamemode.GameModes;
 import com.sk89q.worldedit.world.item.ItemType;
 import java.util.Locale;
 import org.bukkit.Bukkit;
@@ -35,17 +31,6 @@ import org.bukkit.inventory.ItemStack;
 
 public interface IBukkitAdapter {
 
-    /**
-     * Checks equality between a WorldEdit BlockType and a Bukkit Material
-     *
-     * @param blockType The WorldEdit BlockType
-     * @param type The Bukkit Material
-     * @return If they are equal
-     */
-    default boolean equals(BlockType blockType, Material type) {
-        return blockType == asItemType(type).getBlockType();
-    }
-
     /**
      * Convert any WorldEdit world into an equivalent wrapped Bukkit world.
      *
@@ -67,17 +52,6 @@ public interface IBukkitAdapter {
         }
     }
 
-    /**
-     * Create a WorldEdit world from a Bukkit world.
-     *
-     * @param world the Bukkit world
-     * @return a WorldEdit world
-     */
-    default World adapt(org.bukkit.World world) {
-        checkNotNull(world);
-        return new BukkitWorld(world);
-    }
-
     /**
      * Create a Bukkit world from a WorldEdit world.
      *
@@ -98,38 +72,6 @@ public interface IBukkitAdapter {
         }
     }
 
-    /**
-     * Create a WorldEdit location from a Bukkit location.
-     *
-     * @param location the Bukkit location
-     * @return a WorldEdit location
-     */
-    default Location adapt(org.bukkit.Location location) {
-        checkNotNull(location);
-        Vector3 position = asVector(location);
-        return new Location(
-                adapt(location.getWorld()),
-                position,
-                location.getYaw(),
-                location.getPitch());
-    }
-
-    /**
-     * Create a Bukkit location from a WorldEdit location.
-     *
-     * @param location the WorldEdit location
-     * @return a Bukkit location
-     */
-    default org.bukkit.Location adapt(Location location) {
-        checkNotNull(location);
-        Vector3 position = location;
-        return new org.bukkit.Location(
-                adapt((World) location.getExtent()),
-                position.getX(), position.getY(), position.getZ(),
-                location.getYaw(),
-                location.getPitch());
-    }
-
     /**
      * Create a Bukkit location from a WorldEdit position with a Bukkit world.
      *
@@ -228,27 +170,6 @@ public interface IBukkitAdapter {
         return Material.getMaterial(id);
     }
 
-    /**
-     * Create a WorldEdit GameMode from a Bukkit one.
-     *
-     * @param gameMode Bukkit GameMode
-     * @return WorldEdit GameMode
-     */
-    default GameMode adapt(org.bukkit.GameMode gameMode) {
-        checkNotNull(gameMode);
-        return GameModes.get(gameMode.name().toLowerCase(Locale.ROOT));
-    }
-
-    /**
-     * Create a WorldEdit EntityType from a Bukkit one.
-     *
-     * @param entityType Bukkit EntityType
-     * @return WorldEdit EntityType
-     */
-    default EntityType adapt(org.bukkit.entity.EntityType entityType) {
-        return EntityTypes.get(entityType.getName().toLowerCase(Locale.ROOT));
-    }
-
     default org.bukkit.entity.EntityType adapt(EntityType entityType) {
         if (!entityType.getId().startsWith("minecraft:")) {
             throw new IllegalArgumentException("Bukkit only supports vanilla entities");
@@ -303,21 +224,6 @@ public interface IBukkitAdapter {
      */
     BlockData adapt(BlockStateHolder block);
 
-    /**
-     * Create a WorldEdit BlockStateHolder from a Bukkit ItemStack
-     *
-     * @param itemStack The Bukkit ItemStack
-     * @return The WorldEdit BlockState
-     */
-    default BlockState asBlockState(ItemStack itemStack) {
-        checkNotNull(itemStack);
-        if (itemStack.getType().isBlock()) {
-            return adapt(itemStack.getType().createBlockData());
-        } else {
-            throw new NotABlockException();
-        }
-    }
-
     /**
      * Create a WorldEdit BaseItemStack from a Bukkit ItemStack
      *

worldedit-core/build.gradle.kts

@@ -33,10 +33,6 @@ dependencies {
     "annotationProcessor"("com.google.auto.value:auto-value:${Versions.AUTO_VALUE}")
     "compile"("co.aikar:fastutil-lite:1.0")
     "compile"("com.github.luben:zstd-jni:1.4.3-1")
-    //"compile"("com.mojang:datafixerupper:1.0.20")
-    "compileOnly"("com.github.intellectualsites.plotsquared:PlotSquared-API:latest") {
-        isTransitive = false
-    }
     "compileOnly"("net.fabiozumbi12:redprotect:1.9.6")
 }
 

worldedit-core/src/main/java/com/boydti/fawe/Fawe.java

@@ -4,7 +4,6 @@ import com.boydti.fawe.beta.implementation.QueueHandler;
 import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.object.brush.visualization.VisualQueue;
-import com.boydti.fawe.regions.general.plot.PlotSquaredFeature;
 import com.boydti.fawe.util.CachedTextureUtil;
 import com.boydti.fawe.util.CleanTextureUtil;
 import com.boydti.fawe.util.FaweTimer;
@@ -186,7 +185,6 @@ public class Fawe {
                 transformParser = new DefaultTransformParser(getWorldEdit());
                 visualQueue = new VisualQueue(3);
                 WEManager.IMP.managers.addAll(Fawe.this.IMP.getMaskManagers());
-                WEManager.IMP.managers.add(new PlotSquaredFeature());
                 Fawe.debug("Plugin 'PlotSquared' found. Using it now.");
             } catch (Throwable ignored) {}
             try {

worldedit-core/src/main/java/com/boydti/fawe/beta/IChunkSet.java

@@ -24,6 +24,7 @@ public interface IChunkSet extends IBlocks, OutputExtent {
 
     boolean isEmpty();
 
+    @Override
     boolean setTile(int x, int y, int z, CompoundTag tile);
 
     void setEntity(CompoundTag tag);

worldedit-core/src/main/java/com/boydti/fawe/command/CFICommands.java

@@ -104,7 +104,7 @@ public class CFICommands {
             desc = "Start CFI with a height map as a base"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void heightmap(Player fp, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "yscale", desc = "double", def = "1") double yscale) {
+    public void heightmap(Player player, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "yscale", desc = "double", def = "1") double yscale) {
         if (yscale != 0) {
             int[] raw = ((DataBufferInt) image.load().getRaster().getDataBuffer()).getData();
             int[] table = IntStream.range(0, 256).map(i -> Math.min(255, (int) (i * yscale)))
@@ -118,7 +118,7 @@ public class CFICommands {
             }
         }
         HeightMapMCAGenerator generator = new HeightMapMCAGenerator(image.load(), getFolder(generateName()));
-        setup(generator, fp);
+        setup(generator, player);
     }
 
     @Command(
@@ -126,9 +126,9 @@ public class CFICommands {
             desc = "Start CFI with an empty map as a base"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void heightMap(Player fp, int width, int length) {
+    public void heightMap(Player player, int width, int length) {
         HeightMapMCAGenerator generator = new HeightMapMCAGenerator(width, length, getFolder(generateName()));
-        setup(generator, fp);
+        setup(generator, player);
     }
 
     private String generateName() {
@@ -136,13 +136,13 @@ public class CFICommands {
         return df.format(new Date());
     }
 
-    private void setup(HeightMapMCAGenerator generator, Player fp) {
-        CFISettings settings = getSettings(fp).remove();
-        generator.setPacketViewer(fp);
+    private void setup(HeightMapMCAGenerator generator, Player player) {
+        CFISettings settings = getSettings(player).remove();
+        generator.setPacketViewer(player);
         settings.setGenerator(generator).bind();
-        generator.setImageViewer(Fawe.imp().getImageViewer(fp));
+        generator.setImageViewer(Fawe.imp().getImageViewer(player));
         generator.update();
-        mainMenu(fp);
+        mainMenu(player);
     }
 
     @Command(
@@ -172,9 +172,9 @@ public class CFICommands {
             desc = "Cancel creation"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void cancel(Player fp) {
-        getSettings(fp).remove();
-        fp.print("Cancelled!");
+    public void cancel(Player player) {
+        getSettings(player).remove();
+        player.print("Cancelled!");
     }
 
     @Command(
@@ -238,8 +238,8 @@ public class CFICommands {
             desc = "Set the floor and main block"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void column(Player fp, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        HeightMapMCAGenerator gen = assertSettings(fp).getGenerator();
+    public void column(Player player, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        HeightMapMCAGenerator gen = assertSettings(player).getGenerator();
         if (image != null) {
             gen.setColumn(load(image), patternArg, !disableWhiteOnly);
         } else if (maskOpt != null) {
@@ -247,9 +247,9 @@ public class CFICommands {
         } else {
             gen.setColumn(patternArg);
         }
-        fp.print("Set column!");
-        assertSettings(fp).resetComponent();
-        component(fp);
+        player.print("Set column!");
+        assertSettings(player).resetComponent();
+        component(player);
     }
 
     @Command(
@@ -257,15 +257,15 @@ public class CFICommands {
             desc = "Set the floor (default: grass)"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void floorCmd(Player fp, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        floor(fp, patternArg, image, maskOpt, disableWhiteOnly);
-        fp.print("Set floor!");
-        assertSettings(fp).resetComponent();
-        component(fp);
+    public void floorCmd(Player player, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        floor(player, patternArg, image, maskOpt, disableWhiteOnly);
+        player.print("Set floor!");
+        assertSettings(player).resetComponent();
+        component(player);
     }
 
-    private void floor(Player fp, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly) {
-        HeightMapMCAGenerator gen = assertSettings(fp).getGenerator();
+    private void floor(Player player, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly) {
+        HeightMapMCAGenerator gen = assertSettings(player).getGenerator();
         if (image != null) {
             gen.setFloor(load(image), patternArg, !disableWhiteOnly);
         } else if (maskOpt != null) {
@@ -280,15 +280,15 @@ public class CFICommands {
             desc = "Set the main block (default: stone)"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void mainCmd(Player fp, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        main(fp, patternArg, image, maskOpt, disableWhiteOnly);
-        fp.print("Set main!");
-        assertSettings(fp).resetComponent();
-        component(fp);
+    public void mainCmd(Player player, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        main(player, patternArg, image, maskOpt, disableWhiteOnly);
+        player.print("Set main!");
+        assertSettings(player).resetComponent();
+        component(player);
     }
 
-    public void main(Player fp, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        HeightMapMCAGenerator gen = assertSettings(fp).getGenerator();
+    public void main(Player player, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        HeightMapMCAGenerator gen = assertSettings(player).getGenerator();
         if (image != null) {
             gen.setMain(load(image), patternArg, !disableWhiteOnly);
         } else if (maskOpt != null) {
@@ -306,8 +306,8 @@ public class CFICommands {
                     "e.g. Tallgrass"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void overlay(Player fp, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        HeightMapMCAGenerator gen = assertSettings(fp).getGenerator();
+    public void overlay(Player player, @Arg(name = "pattern", desc = "Pattern") Pattern patternArg, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        HeightMapMCAGenerator gen = assertSettings(player).getGenerator();
         if (image != null) {
             gen.setOverlay(load(image), patternArg, !disableWhiteOnly);
         } else if (maskOpt != null) {
@@ -315,8 +315,8 @@ public class CFICommands {
         } else {
             gen.setOverlay(patternArg);
         }
-        fp.print("Set overlay!");
-        component(fp);
+        player.print("Set overlay!");
+        component(player);
     }
 
     @Command(
@@ -328,14 +328,14 @@ public class CFICommands {
                     " - A good value for radius and iterations would be 1 8."
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void smoothCmd(Player fp, int radius, int iterations, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        smooth(fp, radius, iterations, image, maskOpt, disableWhiteOnly);
-        assertSettings(fp).resetComponent();
-        component(fp);
+    public void smoothCmd(Player player, int radius, int iterations, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        smooth(player, radius, iterations, image, maskOpt, disableWhiteOnly);
+        assertSettings(player).resetComponent();
+        component(player);
     }
 
-    private void smooth(Player fp, int radius, int iterations, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        HeightMapMCAGenerator gen = assertSettings(fp).getGenerator();
+    private void smooth(Player player, int radius, int iterations, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        HeightMapMCAGenerator gen = assertSettings(player).getGenerator();
         if (image != null) {
             gen.smooth(load(image), !disableWhiteOnly, radius, iterations);
         } else {
@@ -348,14 +348,14 @@ public class CFICommands {
             desc = "Create some snow"
     )
     @CommandPermissions("worldedit.anvil.cfi")
-    public void snow(Player fp, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
-        HeightMapMCAGenerator gen = assertSettings(fp).getGenerator();
-        floor(fp, BlockTypes.SNOW.getDefaultState().with(PropertyKey.LAYERS, 7), image, maskOpt, disableWhiteOnly);
-        main(fp, BlockTypes.SNOW_BLOCK, image, maskOpt, disableWhiteOnly);
-        smooth(fp, 1, 8, image, maskOpt, disableWhiteOnly);
-        fp.print(TextComponent.of("Added snow!"));
-        assertSettings(fp).resetComponent();
-        component(fp);
+    public void snow(Player player, @Arg(def = "", desc = "image url or filename") ProvideBindings.ImageUri image, @Arg(name = "mask", desc = "Mask", def = "") Mask maskOpt, @Switch(name = 'w', desc = "TODO") boolean disableWhiteOnly){
+        HeightMapMCAGenerator gen = assertSettings(player).getGenerator();
+        floor(player, BlockTypes.SNOW.getDefaultState().with(PropertyKey.LAYERS, 7), image, maskOpt, disableWhiteOnly);
+        main(player, BlockTypes.SNOW_BLOCK, image, maskOpt, disableWhiteOnly);
+        smooth(player, 1, 8, image, maskOpt, disableWhiteOnly);
+        player.print(TextComponent.of("Added snow!"));
+        assertSettings(player).resetComponent();
+        component(player);
     }
 
     @Command(

worldedit-core/src/main/java/com/boydti/fawe/object/brush/BlendBall.java

@@ -1,16 +1,13 @@
 package com.boydti.fawe.object.brush;
 
-import com.google.common.collect.Maps;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.command.tool.brush.Brush;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.world.block.BlockStateHolder;
+import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypes;
-
 import java.util.Arrays;
-import java.util.Map;
 
 public class BlendBall implements Brush {
 
@@ -38,8 +35,8 @@ public class BlendBall implements Brush {
                     }
                     int z0 = z + tz;
                     int highest = 1;
-                    BlockStateHolder currentState = editSession.getBlock(x0, y0, z0);
-                    BlockStateHolder highestState = currentState;
+                    BlockState currentState = editSession.getBlock(x0, y0, z0);
+                    BlockState highestState = currentState;
                     Arrays.fill(frequency, 0);
                     boolean tie = false;
                     for (int ox = -1; ox <= 1; ox++) {
@@ -48,13 +45,9 @@ public class BlendBall implements Brush {
                                 if (oy + y0 < 0 || oy + y0 > maxY) {
                                     continue;
                                 }
-                                BlockStateHolder state = editSession.getBlock(x0 + ox, y0 + oy, z0 + oz);
+                                BlockState state = editSession.getBlock(x0 + ox, y0 + oy, z0 + oz);
                                 Integer count = frequency[state.getInternalBlockTypeId()];
-                                if (count == null) {
-                                    count = 1;
-                                } else {
                                 count++;
-                                }
                                 if (count > highest) {
                                     highest = count;
                                     highestState = state;

worldedit-core/src/main/java/com/boydti/fawe/object/brush/BlobBrush.java

@@ -67,9 +67,9 @@ public class BlobBrush implements Brush {
             .rotateY(ThreadLocalRandom.current().nextInt(360))
             .rotateZ(ThreadLocalRandom.current().nextInt(360));
 
-            double manScaleX = (1.25 + seedX * 0.5);
-            double manScaleY = (1.25 + seedY * 0.5);
-            double manScaleZ = (1.25 + seedZ * 0.5);
+            double manScaleX = 1.25 + seedX * 0.5;
+            double manScaleY = 1.25 + seedY * 0.5;
+            double manScaleZ = 1.25 + seedZ * 0.5;
 
             MutableVector3 mutable = new MutableVector3();
             double roughness = 1 - sphericity;

worldedit-core/src/main/java/com/boydti/fawe/object/brush/BrushSettings.java

@@ -5,7 +5,6 @@ import static com.google.common.base.Preconditions.checkNotNull;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.object.brush.scroll.ScrollAction;
 import com.boydti.fawe.object.extent.ResettableExtent;
-import com.sk89q.minecraft.util.commands.CommandException;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.command.tool.BrushTool;
@@ -42,10 +41,10 @@ public class BrushSettings {
 
     private final Map<SettingType, Object> constructor = new ConcurrentHashMap<>();
 
-    private Brush brush = null;
-    private Mask mask = null;
-    private Mask sourceMask = null;
-    private ResettableExtent transform = null;
+    private Brush brush;
+    private Mask mask;
+    private Mask sourceMask;
+    private ResettableExtent transform;
     private Pattern material;
     private Expression size = new Expression(1);
     private Set<String> permissions;
@@ -57,7 +56,7 @@ public class BrushSettings {
         this.constructor.put(SettingType.PERMISSIONS, permissions);
     }
 
-    public static BrushSettings get(BrushTool tool, Player player, LocalSession session, Map<String, Object> settings) throws CommandException, InputParseException {
+    public static BrushSettings get(BrushTool tool, Player player, LocalSession session, Map<String, Object> settings) throws InputParseException {
         PlatformCommandManager manager = PlatformCommandManager.getInstance();
         String constructor = (String) settings.get(SettingType.BRUSH.name());
         if (constructor == null) {

worldedit-core/src/main/java/com/boydti/fawe/object/brush/CatenaryBrush.java

@@ -31,7 +31,7 @@ public class CatenaryBrush implements Brush, ResettableTool {
 
     @Override
     public void build(EditSession editSession, BlockVector3 pos2, final Pattern pattern, double size) throws MaxChangedBlocksException {
-        boolean visual = (editSession.getExtent() instanceof VisualExtent);
+        boolean visual = editSession.getExtent() instanceof VisualExtent;
         if (pos1 == null || pos2.equals(pos1)) {
             if (!visual) {
                 pos1 = pos2;
@@ -64,9 +64,8 @@ public class CatenaryBrush implements Brush, ResettableTool {
             if (!select) {
                 pos1 = null;
                 return;
-            } else {
-                pos1 = pos2;
             }
+            pos1 = pos2;
         }
     }
 

worldedit-core/src/main/java/com/boydti/fawe/object/brush/ErodeBrush.java

@@ -9,23 +9,23 @@ import com.sk89q.worldedit.command.tool.brush.Brush;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.Direction;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
-
 import java.util.Arrays;
-import java.util.function.Function;
-import java.util.stream.Stream;
 
 public class ErodeBrush implements Brush {
 
-    private static final BlockVector3[] FACES_TO_CHECK = Direction.valuesOf(Direction.Flag.CARDINAL).stream().map(direction -> direction.toBlockVector()).toArray(size -> new BlockVector3[size]);
+    private static final BlockVector3[] FACES_TO_CHECK = Direction.valuesOf(Direction.Flag.CARDINAL).stream().map(Direction::toBlockVector).toArray(BlockVector3[]::new);
 
     @Override
     public void build(EditSession editSession, BlockVector3 position, Pattern pattern, double size) throws MaxChangedBlocksException {
-        this.erosion(editSession, 2, 1, 5, 1, position, size);
+        this.erosion(editSession, 2, 1, 5, position, size);
     }
 
-    public void erosion(final EditSession es, int erodeFaces, int erodeRec, int fillFaces, int fillRec, BlockVector3 target, double size) {
+    void erosion(EditSession es, int erodeFaces, int erodeRec, int fillFaces,
+        BlockVector3 target, double size) {
         int brushSize = (int) size + 1;
         int brushSizeSquared = (int) (size * size);
         int dimension = brushSize * 2 + 1;
@@ -42,7 +42,7 @@ public class ErodeBrush implements Brush {
                 int y0 = y + by;
                 for (int z = -brushSize; z <= brushSize; z++) {
                     int z0 = z + bz;
-                    BlockStateHolder state = es.getBlock(x0, y0, z0);
+                    BlockState state = es.getBlock(x0, y0, z0);
                     buffer1.setBlock(x, y, z, state);
                     buffer2.setBlock(x, y, z, state);
                 }
@@ -55,7 +55,7 @@ public class ErodeBrush implements Brush {
             swap++;
         }
 
-        for (int i = 0; i < fillRec; ++i) {
+        for (int i = 0; i < 1; ++i) {
             fillIteration(brushSize, brushSizeSquared, fillFaces, swap % 2 == 0 ? buffer1 : buffer2, swap % 2 == 1 ? buffer1 : buffer2);
             swap++;
         }
@@ -69,7 +69,8 @@ public class ErodeBrush implements Brush {
         }, true);
     }
 
-    public void fillIteration(int brushSize, int brushSizeSquared, int fillFaces, FaweClipboard current, FaweClipboard target) {
+    private void fillIteration(int brushSize, int brushSizeSquared, int fillFaces,
+        FaweClipboard current, FaweClipboard target) {
         int[] frequency = null;
         for (int x = -brushSize; x <= brushSize; x++) {
             int x2 = x * x;
@@ -81,20 +82,20 @@ public class ErodeBrush implements Brush {
                     if (cube >= brushSizeSquared) {
                         continue;
                     }
-                    BlockStateHolder state = current.getBlock(x, y, z);
+                    BaseBlock state = current.getBlock(x, y, z);
                     if (state.getBlockType().getMaterial().isMovementBlocker()) {
                         continue;
                     }
                     int total = 0;
                     int highest = 1;
-                    BlockStateHolder highestState = state;
+                    BaseBlock highestState = state;
                     if (frequency == null) {
                         frequency = new int[BlockTypes.size()];
                     } else {
                         Arrays.fill(frequency, 0);
                     }
                     for (BlockVector3 offs : FACES_TO_CHECK) {
-                        BlockStateHolder next = current.getBlock(x + offs.getBlockX(), y + offs.getBlockY(), z + offs.getBlockZ());
+                        BaseBlock next = current.getBlock(x + offs.getBlockX(), y + offs.getBlockY(), z + offs.getBlockZ());
                         if (!next.getBlockType().getMaterial().isMovementBlocker()) {
                             continue;
                         }
@@ -113,7 +114,8 @@ public class ErodeBrush implements Brush {
         }
     }
 
-    public void erosionIteration(int brushSize, int brushSizeSquared, int erodeFaces, FaweClipboard current, FaweClipboard target) {
+    private void erosionIteration(int brushSize, int brushSizeSquared, int erodeFaces,
+        FaweClipboard current, FaweClipboard target) {
         int[] frequency = null;
         for (int x = -brushSize; x <= brushSize; x++) {
             int x2 = x * x;
@@ -125,20 +127,20 @@ public class ErodeBrush implements Brush {
                     if (cube >= brushSizeSquared) {
                         continue;
                     }
-                    BlockStateHolder state = current.getBlock(x, y, z);
+                    BaseBlock state = current.getBlock(x, y, z);
                     if (!state.getBlockType().getMaterial().isMovementBlocker()) {
                         continue;
                     }
                     int total = 0;
                     int highest = 1;
-                    BlockStateHolder highestState = state;
+                    BaseBlock highestState = state;
                     if (frequency == null) {
                         frequency = new int[BlockTypes.size()];
                     } else {
                         Arrays.fill(frequency, 0);
                     }
                     for (BlockVector3 offs : FACES_TO_CHECK) {
-                        BlockStateHolder next = current.getBlock(x + offs.getBlockX(), y + offs.getBlockY(), z + offs.getBlockZ());
+                        BaseBlock next = current.getBlock(x + offs.getBlockX(), y + offs.getBlockY(), z + offs.getBlockZ());
                         if (next.getBlockType().getMaterial().isMovementBlocker()) {
                             continue;
                         }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/InspectBrush.java

@@ -47,7 +47,7 @@ public class InspectBrush extends BrushTool implements DoubleActionTraceTool {
     }
 
     public Vector3 getTarget(Player player, boolean adjacent) {
-        int range = this.range > -1 ? getRange() : DEFAULT_RANGE;
+        int range = this.range > -1 ? getRange() : MAX_RANGE;
         if (adjacent) {
             Location face = player.getBlockTraceFace(range, true);
             return face.add(face.getDirection());

worldedit-core/src/main/java/com/boydti/fawe/object/brush/LayerBrush.java

@@ -1,7 +1,5 @@
 package com.boydti.fawe.object.brush;
 
-import com.boydti.fawe.beta.FilterBlock;
-import com.boydti.fawe.beta.IQueueExtent;
 import com.boydti.fawe.object.collection.BlockVectorSet;
 import com.boydti.fawe.object.mask.AdjacentAnyMask;
 import com.boydti.fawe.object.mask.RadiusMask;
@@ -9,8 +7,6 @@ import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.command.tool.brush.Brush;
 import com.sk89q.worldedit.function.mask.BlockMask;
-import com.sk89q.worldedit.function.mask.BlockTypeMask;
-import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.mask.SolidBlockMask;
 import com.sk89q.worldedit.function.operation.Operations;
 import com.sk89q.worldedit.function.pattern.Pattern;
@@ -21,7 +17,6 @@ import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
-
 import java.util.Arrays;
 
 public class LayerBrush implements Brush {
@@ -44,9 +39,7 @@ public class LayerBrush implements Brush {
         visitor.setDirections(Arrays.asList(BreadthFirstSearch.DIAGONAL_DIRECTIONS));
         Operations.completeBlindly(visitor);
         BlockVectorSet visited = visitor.getVisited();
-        visitor = new RecursiveVisitor(new Mask() {
-            @Override
-            public boolean test(BlockVector3 pos) {
+        visitor = new RecursiveVisitor(pos -> {
             int depth = visitor.getDepth() + 1;
             if (depth > 1) {
                 boolean found = false;
@@ -69,7 +62,6 @@ public class LayerBrush implements Brush {
                 }
             }
             return !adjacent.test(pos);
-            }
         }, pos -> {
             int depth = visitor.getDepth();
             BlockStateHolder currentPattern = layers[depth];

worldedit-core/src/main/java/com/boydti/fawe/object/brush/LineBrush.java

@@ -20,8 +20,8 @@ public class LineBrush implements Brush, ResettableTool {
     }
 
     @Override
-    public void build(EditSession editSession, BlockVector3 position, final Pattern pattern, double size) throws MaxChangedBlocksException {
-        boolean visual = (editSession.getExtent() instanceof VisualExtent);
+    public void build(EditSession editSession, BlockVector3 position, Pattern pattern, double size) throws MaxChangedBlocksException {
+        boolean visual = editSession.getExtent() instanceof VisualExtent;
         if (pos1 == null) {
             if (!visual) {
                 pos1 = position;
@@ -34,7 +34,6 @@ public class LineBrush implements Brush, ResettableTool {
             BBC.BRUSH_LINE_SECONDARY.send(editSession.getPlayer());
             if (!select) {
                 pos1 = null;
-                return;
             } else {
                 pos1 = position;
             }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/RaiseBrush.java

@@ -8,6 +8,6 @@ import com.sk89q.worldedit.math.BlockVector3;
 public class RaiseBrush extends ErodeBrush {
     @Override
     public void build(EditSession editSession, BlockVector3 position, Pattern pattern, double size) throws MaxChangedBlocksException {
-        this.erosion(editSession, 6, 0, 1, 1, position, size);
+        this.erosion(editSession, 6, 0, 1, position, size);
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/RecurseBrush.java

@@ -4,7 +4,6 @@ import com.boydti.fawe.object.mask.RadiusMask;
 import com.boydti.fawe.object.visitor.DFSRecursiveVisitor;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.command.tool.brush.Brush;
 import com.sk89q.worldedit.function.block.BlockReplace;
 import com.sk89q.worldedit.function.mask.Mask;
@@ -24,7 +23,7 @@ public class RecurseBrush implements Brush {
     }
 
     @Override
-    public void build(final EditSession editSession, final BlockVector3 position, Pattern to, double size) throws MaxChangedBlocksException {
+    public void build(EditSession editSession, BlockVector3 position, Pattern to, double size) throws MaxChangedBlocksException {
         Mask mask = editSession.getMask();
         if (mask == null) {
             mask = Masks.alwaysTrue();
@@ -35,7 +34,7 @@ public class RecurseBrush implements Brush {
             return;
         }
         final BlockReplace replace = new BlockReplace(editSession, to);
-        editSession.setMask((Mask) null);
+        editSession.setMask(null);
         final int maxY = editSession.getMaxY();
         if (dfs) {
             final Mask radMask = new RadiusMask(0, (int) size);
@@ -43,7 +42,7 @@ public class RecurseBrush implements Brush {
                 @Override
                 public boolean isVisitable(BlockVector3 from, BlockVector3 to) {
                     int y = to.getBlockY();
-                    return y >= y && y < maxY && radMask.test(to) && super.isVisitable(from, to);
+                    return y < maxY && radMask.test(to) && super.isVisitable(from, to);
                 }
             };
             visitor.visit(position);
@@ -53,7 +52,7 @@ public class RecurseBrush implements Brush {
                 @Override
                 public boolean isVisitable(BlockVector3 from, BlockVector3 to) {
                     int y = to.getBlockY();
-                    return y >= y && y < maxY && super.isVisitable(from, to);
+                    return y < maxY && super.isVisitable(from, to);
                 }
             };
             visitor.visit(position);

worldedit-core/src/main/java/com/boydti/fawe/object/brush/ScatterOverlayBrush.java

@@ -17,7 +17,6 @@ public class ScatterOverlayBrush extends ScatterBrush {
         int y = pt.getBlockY();
         int z = pt.getBlockZ();
         BlockVector3 dir = getDirection(pt);
-//        dir.setComponents(x + dir.getBlockX(), y + dir.getBlockY(), z + dir.getBlockZ());
         editSession.setBlock(x + dir.getBlockX(), y + dir.getBlockY(), z + dir.getBlockZ(), p);
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/SpikeBrush.java

@@ -1,15 +0,0 @@
-package com.boydti.fawe.object.brush;
-
-import com.sk89q.worldedit.EditSession;
-import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.command.tool.brush.Brush;
-import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.math.BlockVector3;
-
-public class SpikeBrush implements Brush {
-
-    @Override
-    public void build(EditSession editSession, BlockVector3 position, Pattern pattern, double size) throws MaxChangedBlocksException {
-
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/object/brush/SplatterBrush.java

@@ -5,13 +5,11 @@ import com.boydti.fawe.object.mask.SurfaceMask;
 import com.boydti.fawe.object.pattern.BiomePattern;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.function.mask.SolidBlockMask;
 import com.sk89q.worldedit.function.operation.Operations;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.function.visitor.BreadthFirstSearch;
 import com.sk89q.worldedit.function.visitor.RecursiveVisitor;
 import com.sk89q.worldedit.math.BlockVector3;
-
 import java.util.Arrays;
 import java.util.concurrent.ThreadLocalRandom;
 
@@ -32,8 +30,8 @@ public class SplatterBrush extends ScatterBrush {
             Pattern tmp;
             try {
                 tmp = p.apply(position);
-            } catch (BiomePattern.BiomePatternException ignore) {
-                tmp = ignore.getPattern();
+            } catch (BiomePattern.BiomePatternException e) {
+                tmp = e.getPattern();
             }
             finalPattern = tmp;
         } else {
@@ -44,7 +42,8 @@ public class SplatterBrush extends ScatterBrush {
 
         RecursiveVisitor visitor = new RecursiveVisitor(vector -> {
             double dist = vector.distanceSq(position);
-            if (dist < size2 && !placed.contains(vector) && (ThreadLocalRandom.current().nextInt(5) < 2) && surface.test(vector)) {
+            if (dist < size2 && !placed.contains(vector) && ThreadLocalRandom.current().nextInt(5) < 2
+                && surface.test(vector)) {
                 placed.add(vector);
                 return true;
             }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/SplineBrush.java

@@ -28,12 +28,10 @@ public class SplineBrush implements Brush, ResettableTool {
     private ArrayList<ArrayList<BlockVector3>> positionSets;
     private int numSplines;
 
-    private final LocalSession session;
     private final Player player;
     private BlockVector3 position;
 
     public SplineBrush(Player player, LocalSession session) {
-        this.session = session;
         this.player = player;
         this.positionSets = new ArrayList<>();
     }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/SurfaceSpline.java

@@ -16,9 +16,12 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class SurfaceSpline implements Brush {
-    final double tension, bias, continuity, quality;
+    private final double tension;
+    private final double bias;
+    private final double continuity;
+    private final double quality;
 
-    public SurfaceSpline(final double tension, final double bias, final double continuity, final double quality) {
+    public SurfaceSpline(double tension, double bias, double continuity, double quality) {
         this.tension = tension;
         this.bias = bias;
         this.continuity = continuity;
@@ -43,7 +46,7 @@ public class SurfaceSpline implements Brush {
         final List<Node> nodes = new ArrayList<>(path.size());
         final KochanekBartelsInterpolation interpol = new KochanekBartelsInterpolation();
 
-        for (final BlockVector3 nodevector : path) {
+        for (BlockVector3 nodevector : path) {
             final Node n = new Node(nodevector.toVector3());
             n.setTension(tension);
             n.setBias(bias);
@@ -72,13 +75,13 @@ public class SurfaceSpline implements Brush {
             }
         }
         if (radius != 0) {
-            double radius2 = (radius * radius);
+            double radius2 = radius * radius;
             LocalBlockVectorSet newSet = new LocalBlockVectorSet();
             final int ceilrad = (int) Math.ceil(radius);
-            for (final BlockVector3 v : vset) {
+            for (BlockVector3 v : vset) {
                 final int tipx = v.getBlockX(), tipy = v.getBlockY(), tipz = v.getBlockZ();
-                for (int loopx = tipx - ceilrad; loopx <= (tipx + ceilrad); loopx++) {
-                    for (int loopz = tipz - ceilrad; loopz <= (tipz + ceilrad); loopz++) {
+                for (int loopx = tipx - ceilrad; loopx <= tipx + ceilrad; loopx++) {
+                    for (int loopz = tipz - ceilrad; loopz <= tipz + ceilrad; loopz++) {
                         if (MathMan.hypot2(loopx - tipx, 0, loopz - tipz) <= radius2) {
                             int y = editSession.getNearestSurfaceTerrainBlock(loopx, loopz, v.getBlockY(), 0, maxY);
                             if (y == -1) continue;

worldedit-core/src/main/java/com/boydti/fawe/object/changeset/DiskStorageHistory.java

@@ -139,23 +139,23 @@ public class DiskStorageHistory extends FaweStreamChangeSet {
         enttFile.delete();
     }
 
-    public void undo(Player fp, Region[] regions) {
-        EditSession session = toEditSession(fp, regions);
+    public void undo(Player player, Region[] regions) {
+        EditSession session = toEditSession(player, regions);
         session.undo(session);
         deleteFiles();
     }
 
-    public void undo(Player fp) {
-        undo(fp, null);
+    public void undo(Player player) {
+        undo(player, null);
     }
 
-    public void redo(Player fp, Region[] regions) {
-        EditSession session = toEditSession(fp, regions);
+    public void redo(Player player, Region[] regions) {
+        EditSession session = toEditSession(player, regions);
         session.redo(session);
     }
 
-    public void redo(Player fp) {
-        undo(fp, null);
+    public void redo(Player player) {
+        undo(player, null);
     }
 
     public UUID getUUID() {

worldedit-core/src/main/java/com/boydti/fawe/object/collection/MemBlockSet.java

@@ -140,8 +140,7 @@ public final class MemBlockSet extends BlockSet {
             @Override
             public int size() {
                 int size = 0;
-                for (int X = 0;X < rows.length; X++) {
-                    IRow nullRowX = rows[X];
+                for (IRow nullRowX : rows) {
                     if (nullRowX instanceof RowX) {
                         RowX rowx = (RowX) nullRowX;
                         for (int Z = 0; Z < rowx.rows.length; Z++) {
@@ -238,8 +237,7 @@ public final class MemBlockSet extends BlockSet {
             @Override
             public int size() {
                 int size = 0;
-                for (int X = 0;X < rows.length; X++) {
-                    IRow nullRowX = rows[X];
+                for (IRow nullRowX : rows) {
                     if (nullRowX instanceof RowX) {
                         RowX rowx = (RowX) nullRowX;
                         for (int Z = 0; Z < rowx.rows.length; Z++) {
@@ -286,18 +284,20 @@ public final class MemBlockSet extends BlockSet {
         int maxY = 15;
         int maxy = 16;
         int by = Integer.MAX_VALUE;
-        for (int X = 0; X < rows.length; X++) {
-            IRow nullRowX = rows[X];
-            if (!(nullRowX instanceof RowX)) continue;
+        for (IRow nullRowX : rows) {
+            if (!(nullRowX instanceof RowX))
+                continue;
             RowX rowx = (RowX) nullRowX;
             for (int Z = 0; Z < rowx.rows.length; Z++) {
                 IRow nullRowZ = rowx.rows[Z];
-                if (!(nullRowZ instanceof RowZ)) continue;
+                if (!(nullRowZ instanceof RowZ))
+                    continue;
                 RowZ rowz = (RowZ) nullRowZ;
                 outer:
                 for (int Y = 0; Y <= maxY; Y++) {
                     IRow nullRowY = rowz.rows[Y];
-                    if (!(nullRowY instanceof RowY)) continue;
+                    if (!(nullRowY instanceof RowY))
+                        continue;
                     RowY rowY = (RowY) nullRowY;
                     int localMaxy = Y == maxY ? maxy : 15;
                     for (int y = 0, i = 0; y < localMaxy; y++) {
@@ -312,7 +312,8 @@ public final class MemBlockSet extends BlockSet {
                                     maxy = y;
                                 }
                                 by = (Y << 4) + y;
-                                if (by == 0) return 0;
+                                if (by == 0)
+                                    return 0;
                                 break outer;
                             }
                         }
@@ -328,18 +329,20 @@ public final class MemBlockSet extends BlockSet {
         int maxY = 0;
         int maxy = 0;
         int by = Integer.MIN_VALUE;
-        for (int X = 0; X < rows.length; X++) {
-            IRow nullRowX = rows[X];
-            if (!(nullRowX instanceof RowX)) continue;
+        for (IRow nullRowX : rows) {
+            if (!(nullRowX instanceof RowX))
+                continue;
             RowX rowx = (RowX) nullRowX;
             for (int Z = 0; Z < rowx.rows.length; Z++) {
                 IRow nullRowZ = rowx.rows[Z];
-                if (!(nullRowZ instanceof RowZ)) continue;
+                if (!(nullRowZ instanceof RowZ))
+                    continue;
                 RowZ rowz = (RowZ) nullRowZ;
                 outer:
                 for (int Y = 15; Y >= maxY; Y--) {
                     IRow nullRowY = rowz.rows[Y];
-                    if (!(nullRowY instanceof RowY)) continue;
+                    if (!(nullRowY instanceof RowY))
+                        continue;
                     RowY rowY = (RowY) nullRowY;
                     int localMaxy = Y == maxY ? maxy : 0;
                     for (int y = 15, i = 63; y >= localMaxy; y--) {
@@ -354,7 +357,8 @@ public final class MemBlockSet extends BlockSet {
                                     maxy = y + 1;
                                 }
                                 by = (Y << 4) + y;
-                                if (by == FaweCache.IMP.WORLD_MAX_Y) return FaweCache.IMP.WORLD_MAX_Y;
+                                if (by == FaweCache.IMP.WORLD_MAX_Y)
+                                    return FaweCache.IMP.WORLD_MAX_Y;
                                 break outer;
                             }
                         }
@@ -425,9 +429,7 @@ public final class MemBlockSet extends BlockSet {
                     IRow nullRowY = rowz.rows[Y];
                     if (!(nullRowY instanceof RowY)) continue;
                     RowY rowY = (RowY) nullRowY;
-                    for (long value : rowY.bits) {
-                        or |= value;
-                    }
+                    or |= Arrays.stream(rowY.bits).reduce(0, (a, b) -> a | b);
                     or = (or & 0xFFFF) | ((or >> 16) & 0xFFFF) | ((or >> 32) & 0xFFFF) | ((or >> 48) & 0xFFFF);
                     if (highestBit(or) == 15) return tx + 15;
                 }
@@ -444,14 +446,15 @@ public final class MemBlockSet extends BlockSet {
         int maxChunkZ = rows.length - 1;
         int maxz = 16;
         int bz = Integer.MAX_VALUE;
-        for (int X = 0; X < rows.length; X++) {
-            IRow nullRowX = rows[X];
-            if (!(nullRowX instanceof RowX)) continue;
+        for (IRow nullRowX : rows) {
+            if (!(nullRowX instanceof RowX))
+                continue;
             RowX rowx = (RowX) nullRowX;
             outer:
             for (int Z = 0; Z <= maxChunkZ; Z++) {
                 IRow nullRowZ = rowx.rows[Z];
-                if (!(nullRowZ instanceof RowZ)) continue;
+                if (!(nullRowZ instanceof RowZ))
+                    continue;
                 RowZ rowz = (RowZ) nullRowZ;
                 if (Z != maxChunkZ) {
                     maxChunkZ = Z;
@@ -459,7 +462,8 @@ public final class MemBlockSet extends BlockSet {
                 }
                 for (int Y = 0; Y < rowz.rows.length; Y++) {
                     IRow nullRowY = rowz.rows[Y];
-                    if (!(nullRowY instanceof RowY)) continue;
+                    if (!(nullRowY instanceof RowY))
+                        continue;
                     RowY rowY = (RowY) nullRowY;
                     for (int y = 0, i1 = 0; y < 16; y++, i1 += 4) {
                         for (int z = 0, i = i1; z < maxz; z += 4, i++) {
@@ -500,9 +504,7 @@ public final class MemBlockSet extends BlockSet {
                     IRow nullRowY = rowz.rows[Y];
                     if (!(nullRowY instanceof RowY)) continue;
                     RowY rowY = (RowY) nullRowY;
-                    for (long value : rowY.bits) {
-                        or |= value;
-                    }
+                    or |= Arrays.stream(rowY.bits).reduce(0, (a, b) -> a | b);
                     or = (or & 0xFFFF) | ((or >> 16) & 0xFFFF) | ((or >> 32) & 0xFFFF) | ((or >> 48) & 0xFFFF);
                     if (lowestBit(or) == 0) return bx;
                 }
@@ -566,7 +568,6 @@ public final class MemBlockSet extends BlockSet {
             private int bx, by, bz, zz, yy;
             private RowX rowX;
             private RowZ rowZ;
-            private RowY rowY;
             private long[] bits;
             private int bitsIndex = 0;
             private int yIndex = 0;
@@ -618,7 +619,7 @@ public final class MemBlockSet extends BlockSet {
                     by = yIndex << 4;
                     IRow nullRowY = rowZ.rows[yIndex++];
                     if (nullRowY instanceof RowY) {
-                        rowY = (RowY) nullRowY;
+                        RowY rowY = (RowY) nullRowY;
                         bits = rowY.bits;
                         return true;
                     }
@@ -656,9 +657,7 @@ public final class MemBlockSet extends BlockSet {
             public BlockVector3 next() {
                 final long lowBit = Long.lowestOneBit(bitBuffer);
                 final int bitIndex = Long.bitCount(lowBit-1);
-                {
                 mutable.setComponents((bx) + (bitIndex & 15), yy, (zz) + (bitIndex));
-                }
                 bitBuffer = bitBuffer ^ lowBit;
                 nextLong();
                 return mutable;
@@ -674,20 +673,23 @@ public final class MemBlockSet extends BlockSet {
 
     @Override
     public boolean isEmpty() {
-        for (int X = 0; X < rows.length; X++) {
-            IRow nullRowX = rows[X];
-            if (!(nullRowX instanceof RowX)) continue;
+        for (IRow nullRowX : rows) {
+            if (!(nullRowX instanceof RowX))
+                continue;
             RowX rowx = (RowX) nullRowX;
             for (int Z = 0; Z < rowx.rows.length; Z++) {
                 IRow nullRowZ = rowx.rows[Z];
-                if (!(nullRowZ instanceof RowZ)) continue;
+                if (!(nullRowZ instanceof RowZ))
+                    continue;
                 RowZ rowz = (RowZ) nullRowZ;
                 for (int Y = 0; Y < 16; Y++) {
                     IRow nullRowY = rowz.rows[Y];
-                    if (!(nullRowY instanceof RowY)) continue;
+                    if (!(nullRowY instanceof RowY))
+                        continue;
                     RowY rowY = (RowY) nullRowY;
                     for (long bit : rowY.bits) {
-                        if (bit != 0) return true;
+                        if (bit != 0)
+                            return true;
                     }
                 }
             }
@@ -704,13 +706,14 @@ public final class MemBlockSet extends BlockSet {
         long total = 0;
         long lastBit = 0;
         int lastCount = 0;
-        for (int x = 0; x < rows.length; x++) {
-            IRow nullRowX = rows[x];
-            if (!(nullRowX instanceof RowX)) continue;
+        for (IRow nullRowX : rows) {
+            if (!(nullRowX instanceof RowX))
+                continue;
             RowX rowx = (RowX) nullRowX;
             for (int z = 0; z < rowx.rows.length; z++) {
                 IRow nullRowZ = rowx.rows[z];
-                if (!(nullRowZ instanceof RowZ)) continue;
+                if (!(nullRowZ instanceof RowZ))
+                    continue;
                 RowZ rowz = (RowZ) nullRowZ;
                 for (int y = 0; y < 16; y++) {
                     IRow nullRowY = rowz.rows[y];
@@ -755,7 +758,8 @@ public final class MemBlockSet extends BlockSet {
             remove(rows, x, y, z);
             return false;
         }
-        default void clear(IRow[] rows, int x, int y, int z) { return; }
+        default void clear(IRow[] rows, int x, int y, int z) {
+        }
     }
 
     public static final class NullRowX implements IRow {

worldedit-core/src/main/java/com/boydti/fawe/object/extent/ExtentHeightCacher.java

@@ -1,6 +1,5 @@
 package com.boydti.fawe.object.extent;
 
-import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.extent.PassthroughExtent;
 
@@ -30,7 +29,7 @@ public class ExtentHeightCacher extends PassthroughExtent {
         int rx = x - cacheBotX + 16;
         int rz = z - cacheBotZ + 16;
         int index;
-        if (((rx & 0xFF) != rx || (rz & 0xFF) != rz)) {
+        if ((rx & 0xFF) != rx || (rz & 0xFF) != rz) {
             cacheBotX = x - 16;
             cacheBotZ = z - 16;
             lastY = y;

worldedit-core/src/main/java/com/boydti/fawe/object/extent/FaweRegionExtent.java

@@ -1,12 +1,9 @@
 package com.boydti.fawe.object.extent;
 
-import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.object.FaweLimit;
 import com.boydti.fawe.object.exception.FaweException;
 import com.boydti.fawe.util.WEManager;
 import com.sk89q.worldedit.WorldEditException;
-import com.sk89q.worldedit.world.block.BaseBlock;
-import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.Extent;
@@ -15,9 +12,10 @@ import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 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.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
-
 import java.util.Collection;
 import javax.annotation.Nullable;
 
@@ -41,12 +39,7 @@ public abstract class FaweRegionExtent extends ResettableExtent {
     public abstract Collection<Region> getRegions();
 
     public boolean isGlobal() {
-        for (Region region : getRegions()) {
-            if (region.isGlobal()) {
-                return true;
-            }
-        }
-        return false;
+        return getRegions().stream().anyMatch(Region::isGlobal);
     }
 
     @Override

worldedit-core/src/main/java/com/boydti/fawe/object/extent/OffsetExtent.java

@@ -30,12 +30,12 @@ public class OffsetExtent extends ResettableExtent {
     }
 
     @Override
-    public boolean setBlock(BlockVector3 location, BlockStateHolder block) throws WorldEditException {
+    public <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 location, T block) throws WorldEditException {
         return getExtent().setBlock(location.getBlockX() + dx, location.getBlockY() + dy, location.getBlockZ() + dz, block);
     }
 
     @Override
-    public boolean setBlock(int x, int y, int z, BlockStateHolder block) throws WorldEditException {
+    public  <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException {
         return getExtent().setBlock(x + dx, y + dy, z + dz, block);
     }
 

worldedit-core/src/main/java/com/boydti/fawe/object/extent/TransformExtent.java

@@ -51,13 +51,13 @@ public class TransformExtent extends BlockTransformExtent {
         if (min == null) {
             min = pos;
         }
-        mutable1.mutX(((pos.getX() - min.getX())));
-        mutable1.mutY(((pos.getY() - min.getY())));
-        mutable1.mutZ(((pos.getZ() - min.getZ())));
+        mutable1.mutX(pos.getX() - min.getX());
+        mutable1.mutY(pos.getY() - min.getY());
+        mutable1.mutZ(pos.getZ() - min.getZ());
         Vector3 tmp = getTransform().apply(mutable1);
-        mutable2.mutX((tmp.getX() + min.getX()));
-        mutable2.mutY((tmp.getY() + min.getY()));
-        mutable2.mutZ((tmp.getZ() + min.getZ()));
+        mutable2.mutX(tmp.getX() + min.getX());
+        mutable2.mutY(tmp.getY() + min.getY());
+        mutable2.mutZ(tmp.getZ() + min.getZ());
         return mutable2;
     }
 
@@ -65,13 +65,13 @@ public class TransformExtent extends BlockTransformExtent {
         if (min == null) {
             min = BlockVector3.at(x, y, z);
         }
-        mutable1.mutX(((x - min.getX())));
-        mutable1.mutY(((y - min.getY())));
-        mutable1.mutZ(((z - min.getZ())));
+        mutable1.mutX(x - min.getX());
+        mutable1.mutY(y - min.getY());
+        mutable1.mutZ(z - min.getZ());
         Vector3 tmp = getTransform().apply(mutable1);
-        mutable2.mutX((tmp.getX() + min.getX()));
-        mutable2.mutY((tmp.getY() + min.getY()));
-        mutable2.mutZ((tmp.getZ() + min.getZ()));
+        mutable2.mutX(tmp.getX() + min.getX());
+        mutable2.mutY(tmp.getY() + min.getY());
+        mutable2.mutZ(tmp.getZ() + min.getZ());
         return tmp.toBlockPoint();
     }
 
@@ -93,13 +93,13 @@ public class TransformExtent extends BlockTransformExtent {
     }
 
     @Override
-    public boolean setBlock(int x, int y, int z, BlockStateHolder block) throws WorldEditException {
+    public <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException {
         return super.setBlock(getPos(x, y, z), transformInverse(block));
     }
 
 
     @Override
-    public boolean setBlock(BlockVector3 location, BlockStateHolder block) throws WorldEditException {
+    public <B extends BlockStateHolder<B>> boolean setBlock(BlockVector3 location, B block) throws WorldEditException {
         return super.setBlock(getPos(location), transformInverse(block));
     }
 

worldedit-core/src/main/java/com/boydti/fawe/object/mask/AdjacentAnyMask2.java

@@ -1,11 +0,0 @@
-package com.boydti.fawe.object.mask;
-
-import com.sk89q.worldedit.function.mask.AbstractMask;
-import com.sk89q.worldedit.math.BlockVector3;
-
-public class AdjacentAnyMask2 extends AbstractMask {
-    @Override
-    public boolean test(BlockVector3 vector) {
-        return false;
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/object/number/MutableLong.java

@@ -1,21 +0,0 @@
-package com.boydti.fawe.object.number;
-
-public final class MutableLong {
-    private long value;
-
-    public final void increment() {
-        value++;
-    }
-
-    public void set(long value) {
-        this.value = value;
-    }
-
-    public long get() {
-        return value;
-    }
-
-    public void add(long amount) {
-        this.value += amount;
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/object/pattern/RelativePattern.java

@@ -23,9 +23,9 @@ public class RelativePattern extends AbstractPattern implements ResettablePatter
         if (origin == null) {
             origin = pos;
         }
-        mutable.mutX((pos.getX() - origin.getX()));
-        mutable.mutY((pos.getY() - origin.getY()));
-        mutable.mutZ((pos.getZ() - origin.getZ()));
+        mutable.mutX(pos.getX() - origin.getX());
+        mutable.mutY(pos.getY() - origin.getY());
+        mutable.mutZ(pos.getZ() - origin.getZ());
         return pattern.apply(mutable);
     }
 
@@ -34,9 +34,9 @@ public class RelativePattern extends AbstractPattern implements ResettablePatter
         if (origin == null) {
             origin = set;
         }
-        mutable.mutX((set.getX() - origin.getX()));
-        mutable.mutY((set.getY() - origin.getY()));
-        mutable.mutZ((set.getZ() - origin.getZ()));
+        mutable.mutX(set.getX() - origin.getX());
+        mutable.mutY(set.getY() - origin.getY());
+        mutable.mutZ(set.getZ() - origin.getZ());
         return pattern.apply(extent, get, mutable);
     }
 

worldedit-core/src/main/java/com/boydti/fawe/object/random/SimpleRandom.java

@@ -1,9 +1,10 @@
 package com.boydti.fawe.object.random;
 
 public interface SimpleRandom {
-    public double nextDouble(int x, int y, int z);
 
-    public default int nextInt(int x, int y, int z, int len) {
+    double nextDouble(int x, int y, int z);
+
+    default int nextInt(int x, int y, int z, int len) {
         double val = nextDouble(x, y, z);
         return (int) (val * len);
     }

worldedit-core/src/main/java/com/boydti/fawe/object/random/TrueRandom.java

@@ -3,19 +3,16 @@ package com.boydti.fawe.object.random;
 import java.util.SplittableRandom;
 
 public class TrueRandom implements SimpleRandom {
-    private final SplittableRandom r;
 
-    public TrueRandom() {
-        this.r = new SplittableRandom();
-    }
+    private final SplittableRandom random = new SplittableRandom();
 
     @Override
     public double nextDouble(int x, int y, int z) {
-        return r.nextDouble();
+        return random.nextDouble();
     }
 
     @Override
     public int nextInt(int x, int y, int z, int len) {
-        return r.nextInt(len);
+        return random.nextInt(len);
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/object/regions/Triangle.java

@@ -35,7 +35,8 @@ public class Triangle {
         radius[1] = RADIUS;
         radius[2] = RADIUS;
         this.normalVec = pos2.subtract(pos1).cross(pos3.subtract(pos1)).normalize();
-        this.b = Math.max(Math.max(this.normalVec.dot(pos1), this.normalVec.dot(pos2)), this.normalVec.dot(pos3));
+        this.b = Math.max(Math.max(this.normalVec.dot(pos1), this.normalVec.dot(pos2)),
+            this.normalVec.dot(pos3));
     }
 
     public boolean above(BlockVector3 pt) {
@@ -45,9 +46,14 @@ public class Triangle {
 
     public Edge getEdge(int index) {
         if (index == this.verts.length - 1) {
-            return new Edge(Vector3.at(this.verts[index][0], this.verts[index][1],this.verts[index][2]), Vector3.at(this.verts[0][0], this.verts[0][1], this.verts[0][2]));
+            return new Edge(
+                Vector3.at(this.verts[index][0], this.verts[index][1], this.verts[index][2]),
+                Vector3.at(this.verts[0][0], this.verts[0][1], this.verts[0][2]));
         } else {
-            return new Edge(Vector3.at(this.verts[index][0], this.verts[index][1],this.verts[index][2]), Vector3.at(this.verts[index + 1][0], this.verts[index + 1][1], this.verts[index + 1][2]));
+            return new Edge(
+                Vector3.at(this.verts[index][0], this.verts[index][1], this.verts[index][2]),
+                Vector3.at(this.verts[index + 1][0], this.verts[index + 1][1],
+                    this.verts[index + 1][2]));
         }
     }
 
@@ -80,7 +86,7 @@ public class Triangle {
     }
 
     private double dot(double[] v1, double[] v2) {
-        return (v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2]);
+        return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
     }
 
 
@@ -175,8 +181,8 @@ public class Triangle {
     }
 
 
-    private boolean overlaps(double boxcenter[], double boxhalfsize[], double triverts[][]) {
-        double min, max, p0, p1, p2, rad, fex, fey, fez;
+    private boolean overlaps(double[] boxcenter, double[] boxhalfsize, double[][] triverts) {
+        double min, max, fex, fey, fez;
         sub(v0, triverts[0], boxcenter);
         sub(v1, triverts[1], boxcenter);
         sub(v2, triverts[2], boxcenter);
@@ -188,48 +194,71 @@ public class Triangle {
         fey = Math.abs(e0[1]);
         fez = Math.abs(e0[2]);
 
-        if (!axisTestX01(e0[2], e0[1], fez, fey)) return false;
-        if (!axisTestY02(e0[2], e0[0], fez, fex)) return false;
-        if (!axisTestZ12(e0[1], e0[0], fey, fex)) return false;
+        if (!axisTestX01(e0[2], e0[1], fez, fey)) {
+            return false;
+        }
+        if (!axisTestY02(e0[2], e0[0], fez, fex)) {
+            return false;
+        }
+        if (!axisTestZ12(e0[1], e0[0], fey, fex)) {
+            return false;
+        }
 
         fex = Math.abs(e1[0]);
         fey = Math.abs(e1[1]);
         fez = Math.abs(e1[2]);
 
-        if (!axisTestX01(e1[2], e1[1], fez, fey)) return false;
-        if (!axisTestY02(e1[2], e1[0], fez, fex)) return false;
-        if (!axisTestZ0(e1[1], e1[0], fey, fex)) return false;
-
+        if (!axisTestX01(e1[2], e1[1], fez, fey)) {
+            return false;
+        }
+        if (!axisTestY02(e1[2], e1[0], fez, fex)) {
+            return false;
+        }
+        if (!axisTestZ0(e1[1], e1[0], fey, fex)) {
+            return false;
+        }
 
         fex = Math.abs(e2[0]);
         fey = Math.abs(e2[1]);
         fez = Math.abs(e2[2]);
 
-        if (!axisTestX2(e2[2], e2[1], fez, fey)) return false;
-        if (!axisTestY1(e2[2], e2[0], fez, fex)) return false;
-        if (!axisTestZ12(e2[1], e2[0], fey, fex)) return false;
+        if (!axisTestX2(e2[2], e2[1], fez, fey)) {
+            return false;
+        }
+        if (!axisTestY1(e2[2], e2[0], fez, fex)) {
+            return false;
+        }
+        if (!axisTestZ12(e2[1], e2[0], fey, fex)) {
+            return false;
+        }
 
         max = MathMan.max(v0[0], v1[0], v2[0]);
         min = MathMan.min(v0[0], v1[0], v2[0]);
 
-        if (min > boxhalfsize[0] || max < -boxhalfsize[0]) return false;
+        if (min > boxhalfsize[0] || max < -boxhalfsize[0]) {
+            return false;
+        }
 
         max = MathMan.max(v0[1], v1[1], v2[1]);
         min = MathMan.min(v0[1], v1[1], v2[1]);
 
-        if (min > boxhalfsize[1] || max < -boxhalfsize[1]) return false;
+        if (min > boxhalfsize[1] || max < -boxhalfsize[1]) {
+            return false;
+        }
 
         max = MathMan.max(v0[2], v1[2], v2[2]);
         min = MathMan.min(v0[2], v1[2], v2[2]);
 
-        if (min > boxhalfsize[2] || max < -boxhalfsize[2]) return false;
+        if (min > boxhalfsize[2] || max < -boxhalfsize[2]) {
+            return false;
+        }
 
         cross(normal, e0, e1);
 
-        return (planeBoxOverlap(normal, v0, boxhalfsize));
+        return planeBoxOverlap(normal, v0, boxhalfsize);
     }
 
-    private boolean planeBoxOverlap(double normal[], double vert[], double maxbox[]) {
+    private boolean planeBoxOverlap(double[] normal, double[] vert, double[] maxbox) {
         for (int q = 0; q <= 2; q++) {
             double v = vert[q];
             if (normal[q] > 0.0f) {
@@ -240,8 +269,9 @@ public class Triangle {
                 vmax[q] = -maxbox[q] - v;
             }
         }
-        if (dot(normal, vmin) > 0.0f) return false;
-        if (dot(normal, vmax) >= 0.0f) return true;
+        if (dot(normal, vmin) > 0.0f) {
             return false;
         }
+        return dot(normal, vmax) >= 0.0f;
+    }
 }

worldedit-core/src/main/java/com/boydti/fawe/object/regions/selector/PolyhedralRegionSelector.java

@@ -19,6 +19,8 @@
 
 package com.boydti.fawe.object.regions.selector;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
 import com.boydti.fawe.object.regions.PolyhedralRegion;
 import com.boydti.fawe.object.regions.Triangle;
 import com.sk89q.worldedit.IncompleteRegionException;
@@ -32,13 +34,14 @@ import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.regions.RegionSelector;
 import com.sk89q.worldedit.regions.selector.limit.SelectorLimits;
 import com.sk89q.worldedit.world.World;
-
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
 import javax.annotation.Nullable;
 
-
-import static com.google.common.base.Preconditions.checkNotNull;
-
 /**
  * Creates a {@code PolyhedralRegion} from a user's selections.
  */
@@ -51,7 +54,7 @@ public class PolyhedralRegionSelector implements RegionSelector, CUIRegion {
      * Create a new selector with a {@code null} world.
      */
     public PolyhedralRegionSelector() {
-        this((World) null);
+        this(null);
     }
 
     /**

worldedit-core/src/main/java/com/boydti/fawe/regions/SimpleRegion.java

@@ -1,48 +0,0 @@
-package com.boydti.fawe.regions;
-
-import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.regions.AbstractRegion;
-import com.sk89q.worldedit.regions.RegionOperationException;
-import com.sk89q.worldedit.world.World;
-
-public abstract class SimpleRegion extends AbstractRegion {
-    private final BlockVector3 max;
-    private final BlockVector3 min;
-
-    public SimpleRegion(World world, BlockVector3 min, BlockVector3 max) {
-        super(world);
-        this.min = min;
-        this.max = max;
-    }
-
-    @Override
-    public BlockVector3 getMinimumPoint() {
-        return min;
-    }
-
-    @Override
-    public BlockVector3 getMaximumPoint() {
-        return max;
-    }
-
-    @Override
-    public void expand(BlockVector3... changes) throws RegionOperationException {
-        throw new UnsupportedOperationException("Region is immutable");
-    }
-
-    @Override
-    public void contract(BlockVector3... changes) throws RegionOperationException {
-        throw new UnsupportedOperationException("Region is immutable");
-    }
-
-    @Override
-    public boolean contains(BlockVector3 p) {
-        return contains(p.getBlockX(), p.getBlockY(), p.getBlockZ());
-    }
-
-    @Override
-    public abstract boolean contains(int x, int y, int z);
-
-    @Override
-    public abstract boolean contains(int x, int z);
-}

worldedit-core/src/main/java/com/boydti/fawe/regions/general/RegionFilter.java

@@ -1,7 +1,8 @@
 package com.boydti.fawe.regions.general;
 
 public interface RegionFilter {
-    public boolean containsRegion(int mcaX, int mcaZ);
 
-    public boolean containsChunk(int chunkX, int chunkZ);
+    boolean containsRegion(int mcaX, int mcaZ);
+
+    boolean containsChunk(int chunkX, int chunkZ);
 }

worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -372,8 +372,8 @@ public class LocalSession implements TextureHolder {
     public void remember(EditSession editSession) {
         checkNotNull(editSession);
 
-        Player fp = editSession.getPlayer();
-        int limit = fp == null ? Integer.MAX_VALUE : fp.getLimit().MAX_HISTORY;
+        Player player = editSession.getPlayer();
+        int limit = player == null ? Integer.MAX_VALUE : player.getLimit().MAX_HISTORY;
         remember(editSession, true, limit);
     }
 
@@ -507,7 +507,6 @@ public class LocalSession implements TextureHolder {
      */
     public EditSession undo(@Nullable BlockBag newBlockBag, Actor actor) {
         checkNotNull(actor);
-        //TODO This method needs to be modified to use actors instead of FAWEPlayer
         loadSessionHistoryFromDisk(actor.getUniqueId(), ((Player) actor).getWorldForEditing());
         if (getHistoryNegativeIndex() < history.size()) {
             FaweChangeSet changeSet = getChangeSet(history.get(getHistoryIndex()));
@@ -544,7 +543,6 @@ public class LocalSession implements TextureHolder {
      */
     public EditSession redo(@Nullable BlockBag newBlockBag, Actor actor) {
         checkNotNull(actor);
-        //TODO This method needs to be modified to use actors instead of FAWEPlayer
         loadSessionHistoryFromDisk(actor.getUniqueId(), ((Player)actor).getWorldForEditing());
         if (getHistoryNegativeIndex() > 0) {
             setDirty();
@@ -622,7 +620,6 @@ public class LocalSession implements TextureHolder {
      */
     public RegionSelector getRegionSelector(World world) {
         checkNotNull(world);
-        try {
         if (selector.getWorld() == null || !selector.getWorld().equals(world)) {
             selector.setWorld(world);
             selector.clear();
@@ -630,9 +627,6 @@ public class LocalSession implements TextureHolder {
                 setWorldOverride(null);
             }
         }
-        } catch (Throwable ignore) {
-            selector.clear();
-        }
         return selector;
     }
 
@@ -1044,6 +1038,7 @@ public class LocalSession implements TextureHolder {
         } else if (type.getId().equalsIgnoreCase(config.navigationWand)) {
             throw new InvalidToolBindException(type, "Already used for the navigation wand");
         }
+
         Tool previous;
         if (player != null && (tool instanceof BrushTool || tool == null) && Settings.IMP.EXPERIMENTAL.PERSISTENT_BRUSHES && item.getNativeItem() != null) {
             previous = BrushCache.getCachedTool(item);
@@ -1350,23 +1345,25 @@ public class LocalSession implements TextureHolder {
      */
     public EditSession createEditSession(Actor actor) {
         checkNotNull(actor);
-        BlockBag blockBag = null;
-        if (actor.isPlayer() && actor instanceof Player) {
-            blockBag = getBlockBag((Player) actor);
-        }
+
         World world = null;
         if (hasWorldOverride()) {
             world = getWorldOverride();
         } else if (actor instanceof Locatable && ((Locatable) actor).getExtent() instanceof World) {
             world = (World) ((Locatable) actor).getExtent();
         }
-        EditSessionBuilder builder = new EditSessionBuilder(world);
-        if (actor.isPlayer() && actor instanceof Player) builder.player((Player) actor);
-        builder.blockBag(blockBag);
-        builder.fastmode(fastMode);
 
         // Create an edit session
-        EditSession editSession = builder.build();
+        EditSession editSession;
+        EditSessionBuilder builder = new EditSessionBuilder(world);
+        if (actor.isPlayer() && actor instanceof Player) {
+            BlockBag blockBag = getBlockBag((Player) actor);
+            builder.player((Player) actor);
+            builder.blockBag(blockBag);
+        }
+        builder.fastmode(fastMode);
+
+        editSession = builder.build();
 
         if (mask != null) {
             editSession.setMask(mask);

worldedit-core/src/main/java/com/sk89q/worldedit/command/ApplyBrushCommands.java

@@ -41,7 +41,6 @@ import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.annotation.Direction;
 import com.sk89q.worldedit.internal.command.CommandRegistrationHandler;
 import com.sk89q.worldedit.internal.expression.Expression;
-import com.sk89q.worldedit.internal.expression.runtime.Constant;
 import com.sk89q.worldedit.regions.factory.RegionFactory;
 import com.sk89q.worldedit.util.TreeGenerator;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;

worldedit-core/src/main/java/com/sk89q/worldedit/command/BrushCommands.java

@@ -132,7 +132,6 @@ import org.enginehub.piston.annotation.param.Arg;
 import org.enginehub.piston.annotation.param.ArgFlag;
 import org.enginehub.piston.annotation.param.Switch;
 import org.enginehub.piston.inject.InjectedValueAccess;
-import org.enginehub.piston.inject.Key;
 
 /**
  * Commands to set brush shape.
@@ -162,9 +161,9 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.blendball")
     public void blendBallBrush(Player player, LocalSession session,
         @Arg(desc = "The radius to sample for blending", def = "5")
-        Expression radius, InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new BlendBall()).setSize(radius);
+        set(player, session, new BlendBall()).setSize(radius);
     }
 
     @Command(
@@ -174,9 +173,9 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.erode")
     public void erodeBrush(Player player, LocalSession session,
         @Arg(desc = "The radius for eroding", def = "5")
-            Expression radius, InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new ErodeBrush()).setSize(radius);
+        set(player, session, new ErodeBrush()).setSize(radius);
     }
 
     @Command(
@@ -186,9 +185,9 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.pull")
     public void pullBrush(Player player, LocalSession session,
         @Arg(desc = "The radius to sample for blending", def = "5")
-        Expression radius, InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new RaiseBrush()).setSize(radius);
+        set(player, session, new RaiseBrush()).setSize(radius);
     }
 
     @Command(
@@ -196,11 +195,12 @@ public class BrushCommands {
             desc = "Creates a circle which revolves around your facing direction"
     )
     @CommandPermissions("worldedit.brush.sphere")
-    public void circleBrush(Player player, EditSession editSession, LocalSession session, Pattern fill,
+    public void circleBrush(Player player, EditSession editSession, LocalSession session,
+        Pattern fill,
         @Arg(desc = "The radius to sample for blending", def = "5")
-        Expression radius, InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new CircleBrush(player)).setSize(radius).setFill(fill);
+        set(player, session, new CircleBrush(player)).setSize(radius).setFill(fill);
     }
 
     @Command(
@@ -211,14 +211,14 @@ public class BrushCommands {
                     "Note: Set a mask to recurse along specific blocks"
     )
     @CommandPermissions("worldedit.brush.recursive")
-    public void recursiveBrush(Player player, LocalSession session, EditSession editSession, Pattern fill,
+    public void recursiveBrush(Player player, LocalSession session, EditSession editSession,
+        Pattern fill,
         @Arg(desc = "The radius to sample for blending", def = "5")
             Expression radius,
         @Switch(name = 'd', desc = "Apply in depth first order")
-            boolean depthFirst,
-        InjectedValueAccess context) throws WorldEditException {
+            boolean depthFirst) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new RecurseBrush(depthFirst))
+        set(player, session, new RecurseBrush(depthFirst))
                 .setSize(radius).setFill(fill).setMask(new IdMask(editSession));
     }
 
@@ -236,9 +236,9 @@ public class BrushCommands {
         @Switch(name = 's', desc = "Selects the clicked point after drawing")
             boolean select,
         @Switch(name = 'f', desc = "Create a flat line")
-            boolean flat, InjectedValueAccess context) throws WorldEditException {
+            boolean flat) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new LineBrush(shell, select, flat)).setSize(radius).setFill(fill);
+        set(player, session, new LineBrush(shell, select, flat)).setSize(radius).setFill(fill);
     }
 
     @Command(
@@ -252,12 +252,13 @@ public class BrushCommands {
                     "Tutorial: https://www.planetminecraft.com/blog/fawe-tutorial/"
     )
     @CommandPermissions("worldedit.brush.spline")
-    public void splineBrush(Player player, EditSession editSession, LocalSession session, Pattern fill,
+    public void splineBrush(Player player, EditSession editSession, LocalSession session,
+        Pattern fill,
         @Arg(desc = "The radius to sample for blending", def = "25")
-        Expression radius, InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         player.print(BBC.BRUSH_SPLINE.format(radius));
-        set(session, context,
+        set(player, session,
             new SplineBrush(player, session))
                 .setSize(radius)
                 .setFill(fill);
@@ -272,9 +273,10 @@ public class BrushCommands {
                    "Set [copies] to a value > 0 if you want to have your selection pasted a limited amount of times equally spaced on the curve"
     )
     @CommandPermissions("worldedit.brush.sweep")
-    public void sweepBrush(Player player, LocalSession session, @Arg(name = "copies", desc = "int", def = "-1") int copies, InjectedValueAccess context) throws WorldEditException {
+    public void sweepBrush(Player player, LocalSession session,
+        @Arg(name = "copies", desc = "int", def = "-1") int copies) throws WorldEditException {
         player.print(BBC.BRUSH_SPLINE.s());
-        set(session, context, new SweepBrush(copies));
+        set(player, session, new SweepBrush(copies));
     }
 
     @Command(
@@ -283,7 +285,8 @@ public class BrushCommands {
             desc = "Create a hanging line between two points"
     )
     @CommandPermissions("worldedit.brush.spline")
-    public void catenaryBrush(LocalSession session, Pattern fill, @Arg(def = "1.2", desc = "Length of wire compared to distance between points") @Range(min = 1) double lengthFactor,
+    public void catenaryBrush(Player player, LocalSession session, Pattern fill,
+        @Arg(def = "1.2", desc = "Length of wire compared to distance between points") @Range(min = 1) double lengthFactor,
         @Arg(desc = "The radius to sample for blending", def = "0")
             Expression radius,
         @Switch(name = 'h', desc = "Create only a shell")
@@ -291,11 +294,10 @@ public class BrushCommands {
         @Switch(name = 's', desc = "Select the clicked point after drawing")
             boolean select,
         @Switch(name = 'd', desc = "sags the catenary toward the facing direction")
-            boolean facingDirection,
-        InjectedValueAccess context) throws WorldEditException {
+            boolean facingDirection) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         Brush brush = new CatenaryBrush(shell, select, facingDirection, lengthFactor);
-        set(session, context,
+        set(player, session,
             new CatenaryBrush(shell, select, facingDirection, lengthFactor))
                 .setSize(radius)
                 .setFill(fill);
@@ -311,10 +313,13 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.surfacespline") // 0, 0, 0, 10, 0,
     public void surfaceSpline(Player player, LocalSession session, Pattern fill,
         @Arg(desc = "The radius to sample for blending", def = "0")
-            Expression radius, @Arg(name = "tension", desc = "double", def = "0") double tension, @Arg(name = "bias", desc = "double", def = "0") double bias, @Arg(name = "continuity", desc = "double", def = "0") double continuity, @Arg(name = "quality", desc = "double", def = "10") double quality, InjectedValueAccess context) throws WorldEditException {
+            Expression radius, @Arg(name = "tension", desc = "double", def = "0") double tension,
+        @Arg(name = "bias", desc = "double", def = "0") double bias,
+        @Arg(name = "continuity", desc = "double", def = "0") double continuity,
+        @Arg(name = "quality", desc = "double", def = "10") double quality) throws WorldEditException {
         player.print(BBC.BRUSH_SPLINE.format(radius));
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context,
+        set(player, session,
             new SurfaceSpline(tension, bias, continuity, quality))
                 .setSize(radius)
                 .setFill(fill);
@@ -326,11 +331,19 @@ public class BrushCommands {
             desc = "Creates a distorted sphere"
     )
     @CommandPermissions("worldedit.brush.rock")
-    public void blobBrush(LocalSession session, Pattern fill, @Arg(name = "radius", desc = "Vector3", def = "10") Vector3 radius, @Arg(name = "sphericity", desc = "double", def = "100") double sphericity, @Arg(name = "frequency", desc = "double", def = "30") double frequency, @Arg(name = "amplitude", desc = "double", def = "50") double amplitude, InjectedValueAccess context) throws WorldEditException {
+    public void blobBrush(Player player, LocalSession session, Pattern fill,
+        @Arg(name = "radius", desc = "Vector3", def = "10")
+            Vector3 radius,
+        @Arg(name = "sphericity", desc = "double", def = "100")
+            double sphericity,
+        @Arg(name = "frequency", desc = "double", def = "30")
+            double frequency,
+        @Arg(name = "amplitude", desc = "double", def = "50")
+            double amplitude) throws WorldEditException {
         double max = MathMan.max(radius.getX(), radius.getY(), radius.getZ());
         worldEdit.checkMaxBrushRadius(max);
         Brush brush = new BlobBrush(radius.divide(max), frequency / 100, amplitude / 100, sphericity / 100);
-        set(session, context, brush).setSize(max).setFill(fill);
+        set(player, session, brush).setSize(max).setFill(fill);
     }
 
     @Command(
@@ -347,7 +360,7 @@ public class BrushCommands {
         @Switch(name = 'h', desc = "Create hollow spheres instead")
             boolean hollow,
         @Switch(name = 'f', desc = "Create falling spheres instead")
-            boolean falling, InjectedValueAccess context) throws WorldEditException {
+            boolean falling) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         Brush brush;
         if (hollow) {
@@ -369,10 +382,7 @@ public class BrushCommands {
             }
 
         }
-        set(session, context,
-                brush)
-                .setSize(radius)
-                .setFill(pattern);
+        set(player, session, brush).setSize(radius).setFill(pattern);
     }
 
     @Command(
@@ -383,12 +393,13 @@ public class BrushCommands {
                    "Pic: https://i.imgur.com/2xKsZf2.png"
     )
     @CommandPermissions("worldedit.brush.shatter")
-    public void shatterBrush(Player player, EditSession editSession, LocalSession session, Pattern fill,
+    public void shatterBrush(Player player, EditSession editSession, LocalSession session,
+        Pattern fill,
         @Arg(desc = "The radius to sample for blending", def = "10")
             Expression radius,
-        @Arg(desc = "Lines", def = "10") int count, InjectedValueAccess context) throws WorldEditException {
+        @Arg(desc = "Lines", def = "10") int count) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context,
+        set(player, session,
             new ShatterBrush(count))
                 .setSize(radius)
                 .setFill(fill)
@@ -407,8 +418,7 @@ public class BrushCommands {
         @Arg(def = "0", desc = "rotation") @Range(min = 0, max = 360) int rotation,
         @Arg(name = "yscale", desc = "double", def = "1") double yscale,
         @Switch(name = 'w', desc = "Apply at maximum saturation") boolean onlyWhite,
-                                      @Switch(name = 'r', desc = "Apply random rotation") boolean randomRotate,
-                                      InjectedValueAccess context) throws WorldEditException, FileNotFoundException {
+        @Switch(name = 'r', desc = "Apply random rotation") boolean randomRotate) throws WorldEditException, FileNotFoundException {
         worldEdit.checkMaxBrushRadius(radius);
         InputStream stream = getHeightmapStream(image);
         HeightBrush brush;
@@ -420,7 +430,7 @@ public class BrushCommands {
         if (randomRotate) {
             brush.setRandomRotate(true);
         }
-        set(session, context,
+        set(player, session,
             brush)
                 .setSize(radius)
                 .setFill(fill);
@@ -432,12 +442,16 @@ public class BrushCommands {
             desc = "Use a height map to paint a surface",
             descFooter = "Use a height map to paint any surface.\n")
     @CommandPermissions("worldedit.brush.stencil")
-    public void imageBrush(LocalSession session, @Arg(name = "radius", desc = "Expression", def = "5") Expression radius,
+    public void imageBrush(Player player, LocalSession session,
+        @Arg(name = "radius", desc = "Expression", def = "5")
+            Expression radius,
         ProvideBindings.ImageUri imageUri,
-            @Arg(def = "1", desc = "scale height") @Range(min = Double.MIN_NORMAL) double yscale,
-            @Switch(name = 'a', desc = "Use image Alpha") boolean alpha,
-            @Switch(name = 'f', desc = "Blend the image with existing terrain") boolean fadeOut,
-            InjectedValueAccess context) throws WorldEditException, IOException {
+        @Arg(def = "1", desc = "scale height") @Range(min = Double.MIN_NORMAL)
+            double yscale,
+        @Switch(name = 'a', desc = "Use image Alpha")
+            boolean alpha,
+        @Switch(name = 'f', desc = "Blend the image with existing terrain")
+            boolean fadeOut) throws WorldEditException, IOException {
         BufferedImage image = imageUri.load();
         worldEdit.checkMaxBrushRadius(radius);
         if (yscale != 1) {
@@ -449,9 +463,7 @@ public class BrushCommands {
             alpha = true;
         }
         ImageBrush brush = new ImageBrush(image, session, alpha);
-        set(session, context,
-                brush)
-                .setSize(radius);
+        set(player, session, brush).setSize(radius);
     }
 
     @Command(
@@ -463,12 +475,11 @@ public class BrushCommands {
                    "The -r flag will apply random rotation"
     )
     @CommandPermissions("worldedit.brush.surface")
-    public void surfaceBrush(LocalSession session, Pattern fill,
+    public void surfaceBrush(Player player, LocalSession session, Pattern fill,
         @Arg(name = "radius", desc = "Expression", def = "5")
-            Expression radius,
-        InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new SurfaceSphereBrush()).setFill(fill).setSize(radius);
+        set(player, session, new SurfaceSphereBrush()).setFill(fill).setSize(radius);
     }
 
     @Command(
@@ -478,7 +489,11 @@ public class BrushCommands {
                    "Video: https://youtu.be/RPZIaTbqoZw?t=34s"
     )
     @CommandPermissions("worldedit.brush.scatter")
-    public void scatterBrush(LocalSession session, Pattern fill, @Arg(name = "radius", desc = "Expression", def = "5") Expression radius, @Arg(name = "points", desc = "double", def = "5") double pointsOpt, @Arg(name = "distance", desc = "double", def = "1") double distanceOpt, @Switch(name = 'o', desc = "Overlay the block") boolean overlay, InjectedValueAccess context) throws WorldEditException {
+    public void scatterBrush(Player player, LocalSession session, Pattern fill,
+        @Arg(name = "radius", desc = "Expression", def = "5") Expression radius,
+        @Arg(name = "points", desc = "double", def = "5") double pointsOpt,
+        @Arg(name = "distance", desc = "double", def = "1") double distanceOpt,
+        @Switch(name = 'o', desc = "Overlay the block") boolean overlay) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         Brush brush;
         if (overlay) {
@@ -486,10 +501,7 @@ public class BrushCommands {
         } else {
             brush = new ScatterBrush((int) pointsOpt, (int) distanceOpt);
         }
-        set(session, context,
-                brush)
-                .setSize(radius)
-                .setFill(fill);
+        set(player, session, brush).setSize(radius).setFill(fill);
     }
 
     @Command(
@@ -498,7 +510,11 @@ public class BrushCommands {
             desc = "Scatter a schematic on a surface"
     )
     @CommandPermissions("worldedit.brush.populateschematic")
-    public void scatterSchemBrush(Player player, LocalSession session, Mask mask, @Arg(name = "clipboard", desc = "Clipboard uri") String clipboardStr, @Arg(name = "radius", desc = "Expression", def = "30") Expression radius, @Arg(name = "density", desc = "double", def = "50") double density, @Switch(name = 'r', desc = "Apply random rotation") boolean rotate, InjectedValueAccess context) throws WorldEditException {
+    public void scatterSchemBrush(Player player, LocalSession session, Mask mask,
+        @Arg(name = "clipboard", desc = "Clipboard uri") String clipboardStr,
+        @Arg(name = "radius", desc = "Expression", def = "30") Expression radius,
+        @Arg(name = "density", desc = "double", def = "50") double density,
+        @Switch(name = 'r', desc = "Apply random rotation") boolean rotate) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         try {
             MultiClipboardHolder clipboards = ClipboardFormats.loadAllFromInput(player, clipboardStr, null, true);
@@ -512,7 +528,7 @@ public class BrushCommands {
                 return;
             }
 
-            set(session, context,
+            set(player, session,
                 new PopulateSchem(mask, holders, (int) density, rotate)).setSize(radius);
         } catch (IOException e) {
             throw new RuntimeException(e);
@@ -527,9 +543,10 @@ public class BrushCommands {
                    "Pic: https://i.imgur.com/XV0vYoX.png"
     )
     @CommandPermissions("worldedit.brush.layer")
-    public void surfaceLayer(LocalSession session, @Arg(name = "radius", desc = "Expression") Expression radius, List<BlockState> blockLayers, InjectedValueAccess context) throws WorldEditException {
+    public void surfaceLayer(Player player, LocalSession session,
+        @Arg(name = "radius", desc = "Expression") Expression radius, List<BlockState> blockLayers) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new LayerBrush(blockLayers.toArray(new BlockState[0]))).setSize(radius);
+        set(player, session, new LayerBrush(blockLayers.toArray(new BlockState[0]))).setSize(radius);
     }
 
     @Command(
@@ -541,9 +558,13 @@ public class BrushCommands {
                    "Note: The seeds define how many splotches there are, recursion defines how large, solid defines whether the pattern is applied per seed, else per block."
     )
     @CommandPermissions("worldedit.brush.splatter")
-    public void splatterBrush(LocalSession session, Pattern fill, @Arg(name = "radius", desc = "Expression", def = "5") Expression radius, @Arg(name = "points", desc = "double", def = "1") double pointsOpt, @Arg(name = "recursion", desc = "double", def = "5") double recursion, @Arg(name = "solid", desc = "boolean", def = "true") boolean solid, InjectedValueAccess context) throws WorldEditException {
+    public void splatterBrush(Player player, LocalSession session, Pattern fill,
+        @Arg(name = "radius", desc = "Expression", def = "5") Expression radius,
+        @Arg(name = "points", desc = "double", def = "1") double pointsOpt,
+        @Arg(name = "recursion", desc = "double", def = "5") double recursion,
+        @Arg(name = "solid", desc = "boolean", def = "true") boolean solid) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context, new SplatterBrush((int) pointsOpt, (int) recursion, solid)).setSize(radius).setFill(fill);
+        set(player, session, new SplatterBrush((int) pointsOpt, (int) recursion, solid)).setSize(radius).setFill(fill);
     }
 
     @Command(
@@ -557,9 +578,11 @@ public class BrushCommands {
                             " - Placeholders: {x}, {y}, {z}, {world}, {size}"
     )
     @CommandPermissions("worldedit.brush.scattercommand")
-    public void scatterCommandBrush(Player player, EditSession editSession, LocalSession session, @Arg(name = "radius", desc = "Expression") Expression radius, double points, double distance, List<String> commandStr, InjectedValueAccess context) throws WorldEditException {
+    public void scatterCommandBrush(Player player, EditSession editSession, LocalSession session,
+        @Arg(name = "radius", desc = "Expression") Expression radius, double points,
+        double distance, List<String> commandStr) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(session, context,
+        set(player, session,
             new ScatterCommand((int) points, (int) distance, StringMan.join(commandStr, " ")))
                 .setSize(radius);
     }
@@ -578,19 +601,17 @@ public class BrushCommands {
         @Arg(desc = "The height of the cylinder", def = "1")
             int height,
         @Switch(name = 'h', desc = "Create hollow cylinders instead")
-            boolean hollow,
-        InjectedValueAccess context) throws WorldEditException {
+            boolean hollow) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         worldEdit.checkMaxBrushRadius(height);
 
         BrushSettings settings;
         if (hollow) {
-            settings = set(session, context, new HollowCylinderBrush(height));
+            settings = set(player, session, new HollowCylinderBrush(height));
         } else {
-            settings = set(session, context, new CylinderBrush(height));
+            settings = set(player, session, new CylinderBrush(height));
         }
-        settings.setSize(radius)
-                .setFill(pattern);
+        settings.setSize(radius).setFill(pattern);
     }
 
     @Command(
@@ -614,9 +635,9 @@ public class BrushCommands {
             boolean pasteBiomes,
         @ArgFlag(name = 'm', desc = "Skip blocks matching this mask in the clipboard", def = "")
         @ClipboardMask
-                                   Mask sourceMask,
-        InjectedValueAccess context) throws WorldEditException {
+            Mask sourceMask) throws WorldEditException {
         ClipboardHolder holder = session.getClipboard();
+
         Clipboard clipboard = holder.getClipboard();
         ClipboardHolder newHolder = new ClipboardHolder(clipboard);
         newHolder.setTransform(holder.getTransform());
@@ -627,7 +648,8 @@ public class BrushCommands {
         worldEdit.checkMaxBrushRadius(size.getBlockY() / 2D - 1);
         worldEdit.checkMaxBrushRadius(size.getBlockZ() / 2D - 1);
 
-        set(session, context, new ClipboardBrush(newHolder, ignoreAir, usingOrigin, !skipEntities, pasteBiomes, sourceMask));
+        set(player, session,
+            new ClipboardBrush(newHolder, ignoreAir, usingOrigin, !skipEntities, pasteBiomes, sourceMask));
     }
 
     @Command(
@@ -642,13 +664,13 @@ public class BrushCommands {
         @Arg(desc = "The number of iterations to perform", def = "4")
             int iterations,
         @Arg(desc = "The mask of blocks to use for the heightmap", def = "")
-                                Mask maskOpt, InjectedValueAccess context) throws WorldEditException {
+            Mask maskOpt) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
 
         FaweLimit limit = Settings.IMP.getLimit(player);
         iterations = Math.min(limit.MAX_ITERATIONS, iterations);
 
-        set(session, context,
+        set(player, session,
             new SmoothBrush(iterations, maskOpt))
                 .setSize(radius);
     }
@@ -661,15 +683,13 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.ex")
     public void extinguishBrush(Player player, LocalSession session, EditSession editSession,
         @Arg(desc = "The radius to extinguish", def = "5")
-                                    Expression radius,
-        InjectedValueAccess context) throws WorldEditException {
+            Expression radius) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
 
-        Pattern fill = BlockTypes.AIR.getDefaultState();
-        set(session, context,
+        set(player, session,
             new SphereBrush())
                 .setSize(radius)
-                .setFill(fill)
+                .setFill(BlockTypes.AIR.getDefaultState())
                 .setMask(new SingleBlockTypeMask(editSession, BlockTypes.FIRE));
     }
 
@@ -683,13 +703,10 @@ public class BrushCommands {
         @Arg(desc = "The radius to apply gravity in", def = "5")
             Expression radius,
         @Switch(name = 'h', desc = "Affect blocks starting at max Y, rather than the target location Y + radius")
-            boolean fromMaxY,
-        InjectedValueAccess context) throws WorldEditException {
+            boolean fromMaxY) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
 
-        set(session, context,
-                new GravityBrush(fromMaxY))
-                .setSize(radius);
+        set(player, session, new GravityBrush(fromMaxY)).setSize(radius);
     }
 
     @Command(
@@ -705,7 +722,7 @@ public class BrushCommands {
     )
     @CommandPermissions("worldedit.brush.height")
     public void heightBrush(Player player, LocalSession session, @Arg(name = "radius", desc = "Expression", def = "5") Expression radius, @Arg(name = "image", desc = "String", def = "") String image, @Arg(def = "0", desc = "rotation") @Range(min = 0, max = 360) int rotation, @Arg(name = "yscale", desc = "double", def = "1") double yscale, @Switch(name = 'r', desc = "TODO") boolean randomRotate, @Switch(name = 'l', desc = "TODO") boolean layers, @Switch(name = 's', desc = "TODO") boolean dontSmooth, InjectedValueAccess context) throws WorldEditException, FileNotFoundException {
-        terrainBrush(player, session, radius, image, rotation, yscale, false, randomRotate, layers, !dontSmooth, ScalableHeightMap.Shape.CONE, context);
+        terrainBrush(player, session, radius, image, rotation, yscale, false, randomRotate, layers, !dontSmooth, ScalableHeightMap.Shape.CONE);
     }
 
     @Command(
@@ -730,7 +747,7 @@ public class BrushCommands {
             boolean layers,
         @Switch(name = 's', desc = "Disables smoothing")
             boolean dontSmooth, InjectedValueAccess context) throws WorldEditException, FileNotFoundException {
-        terrainBrush(player, session, radius, image, rotation, yscale, true, randomRotate, layers, !dontSmooth, ScalableHeightMap.Shape.CYLINDER, context);
+        terrainBrush(player, session, radius, image, rotation, yscale, true, randomRotate, layers, !dontSmooth, ScalableHeightMap.Shape.CYLINDER);
     }
 
     @Command(
@@ -746,10 +763,13 @@ public class BrushCommands {
             boolean layers,
         @Switch(name = 's', desc = "Disables smoothing")
             boolean dontSmooth, InjectedValueAccess context) throws WorldEditException, FileNotFoundException {
-        terrainBrush(player, session, radius, image, rotation, yscale, true, randomRotate, layers, !dontSmooth, ScalableHeightMap.Shape.CONE, context);
+        terrainBrush(player, session, radius, image, rotation, yscale, true, randomRotate, layers, !dontSmooth, ScalableHeightMap.Shape.CONE);
     }
 
-    private void terrainBrush(Player player, LocalSession session, @Arg(name = "radius", desc = "Expression") Expression radius, String image, int rotation, double yscale, boolean flat, boolean randomRotate, boolean layers, boolean smooth, Shape shape, InjectedValueAccess context) throws WorldEditException, FileNotFoundException {
+    private void terrainBrush(Player player, LocalSession session,
+        @Arg(name = "radius", desc = "Expression") Expression radius, String image, int rotation,
+        double yscale, boolean flat, boolean randomRotate, boolean layers, boolean smooth,
+        Shape shape) throws WorldEditException, FileNotFoundException {
         worldEdit.checkMaxBrushRadius(radius);
         InputStream stream = getHeightmapStream(image);
         HeightBrush brush;
@@ -769,7 +789,7 @@ public class BrushCommands {
         if (randomRotate) {
             brush.setRandomRotate(true);
         }
-        set(session, context,
+        set(player, session,
             brush)
             .setSize(radius);
     }
@@ -794,11 +814,14 @@ public class BrushCommands {
                    "Video: https://www.youtube.com/watch?v=RPZIaTbqoZw"
     )
     @CommandPermissions("worldedit.brush.copy")
-    public void copy(Player player, LocalSession session, @Arg(name = "radius", desc = "Expression", def = "5") Expression radius, @Switch(name = 'r', desc = "Apply random rotation on paste") boolean randomRotate, @Switch(name = 'a', desc = "Apply auto view based rotation on paste") boolean autoRotate, InjectedValueAccess context) throws WorldEditException {
+    public void copy(Player player, LocalSession session,
+        @Arg(name = "radius", desc = "Expression", def = "5") Expression radius,
+        @Switch(name = 'r', desc = "Apply random rotation on paste") boolean randomRotate,
+        @Switch(name = 'a', desc = "Apply auto view based rotation on paste") boolean autoRotate) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         player.print(BBC.BRUSH_COPY.format(radius));
 
-        set(session, context,
+        set(player, session,
             new CopyPastaBrush(player, session, randomRotate, autoRotate))
                 .setSize(radius);
     }
@@ -812,10 +835,12 @@ public class BrushCommands {
                    " - Placeholders: {x}, {y}, {z}, {world}, {size}"
     )
     @CommandPermissions("worldedit.brush.command")
-    public void command(Player player, LocalSession session, @Arg(name = "radius", desc = "Expression") Expression radius, @Arg(desc = "Command to run") List<String> input, InjectedValueAccess context) throws WorldEditException {
+    public void command(Player player, LocalSession session,
+        @Arg(name = "radius", desc = "Expression") Expression radius,
+        @Arg(desc = "Command to run") List<String> input) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         String cmd = StringMan.join(input, " ");
-        set(session, context,
+        set(player, session,
             new CommandBrush(cmd))
                 .setSize(radius);
     }
@@ -826,7 +851,7 @@ public class BrushCommands {
         desc = "Butcher brush, kills mobs within a radius"
     )
     @CommandPermissions("worldedit.brush.butcher")
-    public void butcherBrush(Player player, LocalSession session, InjectedValueAccess context,
+    public void butcherBrush(Player player, LocalSession session,
         @Arg(desc = "Radius to kill mobs in", def = "5")
             Expression radius,
         @Switch(name = 'p', desc = "Also kill pets")
@@ -857,7 +882,7 @@ public class BrushCommands {
         flags.or(CreatureButcher.Flags.TAGGED        , killWithName, "worldedit.butcher.tagged");
         flags.or(CreatureButcher.Flags.ARMOR_STAND   , killArmorStands, "worldedit.butcher.armorstands");
 
-        set(session, context, new ButcherBrush(flags)).setSize(radius);
+        set(player, session, new ButcherBrush(flags)).setSize(radius);
     }
 
     public BrushSettings process(CommandLocals locals, BrushSettings settings) throws WorldEditException {
@@ -873,11 +898,10 @@ public class BrushCommands {
         return null;
     }
 
-    public BrushSettings set(LocalSession session, InjectedValueAccess context, Brush brush) throws InvalidToolBindException {
-        Player plr = context.injectedValue(Key.of(Player.class))
-            .orElseThrow(() -> new IllegalStateException("No player"));
+    public BrushSettings set(Player player, LocalSession session,
+        Brush brush) throws InvalidToolBindException {
         BrushSettings bs = new BrushSettings();
-        BrushTool tool = session.getBrushTool(plr, false);
+        BrushTool tool = session.getBrushTool(player, false);
         if (tool != null) {
             BrushSettings currentContext = tool.getContext();
             if (currentContext != null) {

worldedit-core/src/main/java/com/sk89q/worldedit/command/HistoryCommands.java

@@ -47,6 +47,7 @@ import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.World;
 import java.io.File;
+import java.util.Objects;
 import java.util.UUID;
 import java.util.concurrent.atomic.AtomicInteger;
 import org.enginehub.piston.annotation.Command;
@@ -93,13 +94,9 @@ public class HistoryCommands {
                     return;
                 }
                 File folder = MainUtil.getFile(Fawe.imp().getDirectory(), Settings.IMP.PATHS.HISTORY);
-                if (!folder.exists()) {
-                    return;
-                }
-                for (File worldFolder : folder.listFiles()) {
-                    if (!worldFolder.isDirectory()) {
-                        continue;
-                    }
+                if (folder.exists()) {
+                    for (File worldFolder : Objects.requireNonNull(folder.listFiles())) {
+                        if (worldFolder != null && worldFolder.isDirectory()) {
                             String worldName = worldFolder.getName();
                             World world = FaweAPI.getWorld(worldName);
                             if (world != null) {
@@ -115,12 +112,20 @@ public class HistoryCommands {
                                             if (!name.endsWith(".bd")) {
                                                 continue;
                                             }
-                                    RollbackOptimizedHistory rollback = new RollbackOptimizedHistory(world, uuid, Integer.parseInt(name.substring(0, name.length() - 3)));
-                                    DiskStorageHistory.DiskStorageSummary summary = rollback.summarize(RegionWrapper.GLOBAL(), false);
+                                            RollbackOptimizedHistory rollback = new RollbackOptimizedHistory(
+                                                world, uuid,
+                                                Integer.parseInt(
+                                                    name.substring(0, name.length() - 3)));
+                                            DiskStorageHistory.DiskStorageSummary summary = rollback
+                                                .summarize(RegionWrapper.GLOBAL(), false);
                                             if (summary != null) {
-                                        rollback.setDimensions(BlockVector3.at(summary.minX, 0, summary.minZ), BlockVector3.at(summary.maxX, 255, summary.maxZ));
+                                                rollback.setDimensions(
+                                                    BlockVector3.at(summary.minX, 0, summary.minZ),
+                                                    BlockVector3
+                                                        .at(summary.maxX, 255, summary.maxZ));
                                                 rollback.setTime(historyFile.lastModified());
-                                        RollbackDatabase db = DBHandler.IMP.getDatabase(world);
+                                                RollbackDatabase db = DBHandler.IMP
+                                                    .getDatabase(world);
                                                 db.logEdit(rollback);
                                                 player.print("Logging: " + historyFile);
                                             }
@@ -131,7 +136,9 @@ public class HistoryCommands {
                                 }
                             }
                         }
+                    }
                     player.print("Done import!");
+                }
                 return;
             }
             String toParse = user.substring(1);

worldedit-core/src/main/java/com/sk89q/worldedit/command/argument/FactoryConverter.java

@@ -110,6 +110,9 @@ public class FactoryConverter<T> implements ArgumentConverter<T> {
                 parserContext.setWorld((World) extent);
             }
             parserContext.setExtent(new RequestExtent());
+        } else if (session.hasWorldOverride()) {
+            parserContext.setWorld(session.getWorldOverride());
+            parserContext.setExtent(new RequestExtent());
         }
         parserContext.setSession(session);
         parserContext.setRestricted(true);

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/BlockReplacer.java

@@ -30,7 +30,7 @@ import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.Location;
-import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BaseBlock;
 
 /**
  * A mode that replaces one block.
@@ -55,7 +55,7 @@ public class BlockReplacer implements DoubleActionBlockTool {
         try (EditSession editSession = session.createEditSession(player)) {
             try {
                 BlockVector3 position = clicked.toVector().toBlockPoint();
-                editSession.setBlock(position, pattern.apply(position));
+                editSession.setBlock(position, pattern);
             } catch (MaxChangedBlocksException ignored) {
             } finally {
                 session.remember(editSession);
@@ -72,8 +72,7 @@ public class BlockReplacer implements DoubleActionBlockTool {
 
     @Override
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
-        EditSession editSession = session.createEditSession(player);
-        BlockState targetBlock = editSession.getBlock(clicked.toVector().toBlockPoint());
+        BaseBlock targetBlock = player.getWorld().getFullBlock(clicked.toVector().toBlockPoint());
 
         if (targetBlock != null) {
             pattern = targetBlock;

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/BrushTool.java

@@ -91,7 +91,6 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
     }
 
     protected static int MAX_RANGE = 500;
-    protected static int DEFAULT_RANGE = 240;
     protected int range = -1;
     private VisualMode visualMode = VisualMode.NONE;
     private TargetMode targetMode = TargetMode.TARGET_BLOCK_RANGE;
@@ -178,7 +177,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
         if (targetMode != TargetMode.TARGET_BLOCK_RANGE) {
             map.put("target", targetMode);
         }
-        if (range != -1 && range != DEFAULT_RANGE) {
+        if (range != -1 && range != MAX_RANGE) {
             map.put("range", range);
         }
         if (targetOffset != 0) {
@@ -312,7 +311,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
      * @return the mask used to stop block traces
      */
     public @Nullable Mask getTraceMask() {
-        return traceMask;
+        return this.traceMask;
     }
 
     /**
@@ -409,7 +408,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
      * @return the range of the brush in blocks
      */
     public int getRange() {
-        return (range < 0) ? DEFAULT_RANGE : Math.min(range, MAX_RANGE);
+        return (range < 0) ? MAX_RANGE : Math.min(range, MAX_RANGE);
     }
 
     /**
@@ -418,16 +417,12 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
      * @param range the range of the brush in blocks
      */
     public void setRange(int range) {
-        if (range == DEFAULT_RANGE) {
-            this.range = -1;
-        } else {
         this.range = range;
     }
-    }
 
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session) {
-        return act(BrushAction.PRIMARY, server, config, player, session);
+        return act(BrushAction.PRIMARY, player, session);
     }
 
     public BlockVector3 getPosition(EditSession editSession, Player player) {
@@ -481,7 +476,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
         });
     }
 
-    public boolean act(BrushAction action, Platform server, LocalConfiguration config, Player player, LocalSession session) {
+    public boolean act(BrushAction action, Player player, LocalSession session) {
         switch (action) {
             case PRIMARY:
                 setContext(primary);
@@ -499,14 +494,14 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
             return false;
         }
         try (EditSession editSession = session.createEditSession(player)) {
-            BlockVector3 target = getPosition(editSession, player);
+            Location target = player.getBlockTrace(getRange(), true, traceMask);
 
             if (target == null) {
                 editSession.cancel();
-                BBC.NO_BLOCK.send(player);
+                player.print(BBC.NO_BLOCK.s());
                 return true;
             }
-            BlockBag bag = editSession.getBlockBag();
+            BlockBag bag = session.getBlockBag(player);
 
             Request.request().setEditSession(editSession);
             Mask mask = current.getMask();
@@ -536,7 +531,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
                 new PatternTraverser(current).reset(editSession);
                 double size = current.getSize();
                 WorldEdit.getInstance().checkMaxBrushRadius(size);
-                brush.build(editSession, target, current.getMaterial(), size);
+                brush.build(editSession, target.toBlockPoint(), current.getMaterial(), size);
             } catch (MaxChangedBlocksException e) {
                 player.printError("Max blocks change limit reached.");
             } finally {
@@ -554,7 +549,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
 
     @Override
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session) {
-        return act(BrushAction.SECONDARY, server, config, player, session);
+        return act(BrushAction.SECONDARY, player, session);
     }
 
 
@@ -627,8 +622,8 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
         return false;
     }
 
-    public void queueVisualization(Player fp) {
-        Fawe.get().getVisualQueue().queue(fp);
+    public void queueVisualization(Player player) {
+        Fawe.get().getVisualQueue().queue(player);
     }
 
     @Deprecated

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/RecursivePickaxe.java

@@ -20,11 +20,9 @@
 package com.sk89q.worldedit.command.tool;
 
 import com.boydti.fawe.object.mask.IdMask;
-
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
-import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Platform;
@@ -37,8 +35,6 @@ import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 
-import java.util.Set;
-
 /**
  * A pickaxe mode that recursively finds adjacent blocks within range of
  * an initial block and of the same type.

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/SelectionWand.java

@@ -34,8 +34,8 @@ public class SelectionWand implements DoubleActionBlockTool {
     @Override
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
         RegionSelector selector = session.getRegionSelector(player.getWorld());
-
         BlockVector3 blockPoint = clicked.toVector().toBlockPoint();
+
         if (selector.selectPrimary(blockPoint, ActorSelectorLimits.forActor(player))) {
             selector.explainPrimarySelection(player, session, blockPoint);
         }
@@ -46,6 +46,7 @@ public class SelectionWand implements DoubleActionBlockTool {
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
         RegionSelector selector = session.getRegionSelector(player.getWorld());
         BlockVector3 blockPoint = clicked.toVector().toBlockPoint();
+
         if (selector.selectSecondary(blockPoint, ActorSelectorLimits.forActor(player))) {
             selector.explainSecondarySelection(player, session, blockPoint);
         }

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/TreePlanter.java

@@ -64,10 +64,10 @@ public class TreePlanter implements BlockTool {
                 }
 
                 if (!successful) {
-                    BBC.TOOL_TREE_ERROR_BLOCK.send(player);
+                    player.printError(BBC.TOOL_TREE_ERROR_BLOCK.s());
                 }
             } catch (MaxChangedBlocksException e) {
-                BBC.WORLDEDIT_CANCEL_REASON_MAX_CHANGES.send(player);
+                player.printError(BBC.WORLDEDIT_CANCEL_REASON_MAX_CHANGES.s());
             } finally {
                 session.remember(editSession);
             }

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/brush/HollowCylinderBrush.java

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.block.BlockTypes;

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/brush/HollowSphereBrush.java

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.block.BlockTypes;

worldedit-core/src/main/java/com/sk89q/worldedit/command/util/SuggestionHelper.java

@@ -19,6 +19,9 @@
 
 package com.sk89q.worldedit.command.util;
 
+import static org.enginehub.piston.converter.SuggestionHelper.byPrefix;
+import static org.enginehub.piston.converter.SuggestionHelper.limitByPrefix;
+
 import com.sk89q.worldedit.registry.Keyed;
 import com.sk89q.worldedit.registry.NamespacedRegistry;
 import com.sk89q.worldedit.registry.Registry;
@@ -26,7 +29,6 @@ import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.world.block.BlockCategory;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
-
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
@@ -37,9 +39,6 @@ import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import static org.enginehub.piston.converter.SuggestionHelper.byPrefix;
-import static org.enginehub.piston.converter.SuggestionHelper.limitByPrefix;
-
 /**
  * Internal class for generating common command suggestions.
  */
@@ -140,12 +139,12 @@ public final class SuggestionHelper {
 
     public static <V extends Keyed> Stream<String> getRegistrySuggestions(Registry<V> registry, String input) {
         if (registry instanceof NamespacedRegistry) {
-            return getNamespacedRegistrySuggestions(((NamespacedRegistry<?>) registry), input);
+            return getNamespacedRegistrySuggestions(((NamespacedRegistry<V>) registry), input);
         }
         return limitByPrefix(registry.keySet().stream(), input).stream();
     }
 
-    public static <V extends Keyed> Stream<String> getNamespacedRegistrySuggestions(NamespacedRegistry<?> registry, String input) {
+    public static <V extends Keyed> Stream<String> getNamespacedRegistrySuggestions(NamespacedRegistry<V> registry, String input) {
         if (input.isEmpty() || input.equals(":")) {
             final Set<String> namespaces = registry.getKnownNamespaces();
             if (namespaces.size() == 1) {

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/DefaultBlockParser.java

@@ -60,7 +60,9 @@ import com.sk89q.worldedit.world.block.FuzzyBlockState;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
 
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.Locale;
+import java.util.Map;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -73,10 +75,10 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
         super(worldEdit);
     }
 
-    private static BlockState getBlockInHand(Actor actor, HandSide handSide) throws InputParseException {
+    private static BaseBlock getBlockInHand(Actor actor, HandSide handSide) throws InputParseException {
         if (actor instanceof Player) {
             try {
-                return ((Player) actor).getBlockInHand(handSide).toImmutableState();
+                return ((Player) actor).getBlockInHand(handSide);
             } catch (NotABlockException e) {
                 throw new InputParseException("You're not holding a block!");
             } catch (WorldEditException e) {
@@ -111,6 +113,8 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
         }
     }
 
+    private static String[] EMPTY_STRING_ARRAY = {};
+
     /**
      * Backwards compatibility for wool colours in block syntax.
      *
@@ -163,7 +167,9 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
     }
 
     private BaseBlock parseLogic(String input, ParserContext context) throws InputParseException {
-        String[] blockAndExtraData = input.trim().split("\\|", 2);
+        BlockType blockType = null;
+        Map<Property<?>, Object> blockStates = new HashMap<>();
+        String[] blockAndExtraData = input.trim().split("\\|");
         blockAndExtraData[0] = woolMapper(blockAndExtraData[0]);
 
         BlockState state = null;
@@ -171,8 +177,10 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
         // Legacy matcher
         if (context.isTryingLegacy()) {
             try {
-                String[] split = blockAndExtraData[0].split(":");
-                if (split.length == 1) {
+                String[] split = blockAndExtraData[0].split(":", 2);
+                if (split.length == 0) {
+                    throw new InputParseException("Invalid colon.");
+                } else if (split.length == 1) {
                     state = LegacyMapper.getInstance().getBlockFromLegacy(Integer.parseInt(split[0]));
                 } else if (MathMan.isInteger(split[0])) {
                     int id = Integer.parseInt(split[0]);
@@ -191,7 +199,7 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
                         state = LegacyMapper.getInstance().getBlockFromLegacy(type.getLegacyCombinedId() >> 4, data);
                     }
                 }
-            } catch (NumberFormatException e) {
+            } catch (NumberFormatException ignored) {
             }
         }
 
@@ -204,30 +212,55 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
                 typeString = blockAndExtraData[0];
             } else {
                 typeString = blockAndExtraData[0].substring(0, stateStart);
+                if (stateStart + 1 >= blockAndExtraData[0].length()) {
+                    throw new InputParseException("Invalid format. Hanging bracket @ " + stateStart + ".");
+                }
+                int stateEnd = blockAndExtraData[0].lastIndexOf(']');
+                if (stateEnd < 0) {
+                    throw new InputParseException("Invalid format. Unclosed property.");
+                }
                 stateString = blockAndExtraData[0].substring(stateStart + 1, blockAndExtraData[0].length() - 1);
             }
             if (typeString.isEmpty()) {
                 throw new InputParseException("Invalid format");
             }
-            // PosX
-            if (typeString.matches("pos[0-9]+")) {
+            String[] stateProperties = EMPTY_STRING_ARRAY;
+            if (stateString != null) {
+                stateProperties = stateString.split(",");
+            }
+
+            if ("hand".equalsIgnoreCase(typeString)) {
+                // Get the block type from the item in the user's hand.
+                final BaseBlock blockInHand = getBlockInHand(context.requireActor(), HandSide.MAIN_HAND);
+                if (blockInHand.getClass() != BaseBlock.class) {
+                    return blockInHand;
+                }
+
+                blockType = blockInHand.getBlockType();
+                blockStates.putAll(blockInHand.getStates());
+            } else if ("offhand".equalsIgnoreCase(typeString)) {
+                // Get the block type from the item in the user's off hand.
+                final BaseBlock blockInHand = getBlockInHand(context.requireActor(), HandSide.OFF_HAND);
+                if (blockInHand.getClass() != BaseBlock.class) {
+                    return blockInHand;
+                }
+
+                blockType = blockInHand.getBlockType();
+                blockStates.putAll(blockInHand.getStates());
+            } else if (typeString.matches("pos[0-9]+")) {
                 int index = Integer.parseInt(typeString.replaceAll("[a-z]+", ""));
                 // Get the block type from the "primary position"
                 final World world = context.requireWorld();
                 final BlockVector3 primaryPosition;
                 try {
-                    primaryPosition = context.requireSession().getRegionSelector(world).getVertices().get(index - 1);
+                    primaryPosition = context.requireSession().getRegionSelector(world).getPrimaryPosition();
                 } catch (IncompleteRegionException e) {
                     throw new InputParseException("Your selection is not complete.");
                 }
-                state = world.getBlock(primaryPosition);
-            } else {
-                if ("hand".equalsIgnoreCase(typeString)) {
-                    // Get the block type from the item in the user's hand.
-                    state = getBlockInHand(context.requireActor(), HandSide.MAIN_HAND);
-                } else if ("offhand".equalsIgnoreCase(typeString)) {
-                    // Get the block type from the item in the user's off hand.
-                    state = getBlockInHand(context.requireActor(), HandSide.OFF_HAND);
+                final BlockState blockInHand = world.getBlock(primaryPosition);
+
+                blockType = blockInHand.getBlockType();
+                blockStates.putAll(blockInHand.getStates());
             } else if (typeString.matches("slot[0-9]+")) {
                 int slot = Integer.parseInt(typeString.substring(4)) - 1;
                 Actor actor = context.requireActor();
@@ -236,7 +269,7 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
                 }
                 Player player = (Player) actor;
                 BlockBag bag = player.getInventoryBlockBag();
-                    if (bag == null || !(bag instanceof SlottableBlockBag)) {
+                if (true) {
                     throw new InputParseException("Unsupported!");
                 }
                 SlottableBlockBag slottable = (SlottableBlockBag) bag;
@@ -254,8 +287,8 @@ public class DefaultBlockParser extends InputParser<BaseBlock> {
                     state = type.getDefaultState();
                 }
                 if (state == null) {
-                        throw new NoMatchException("Does not match a valid block type: '" + input + "'");
-                    }
+                    throw new NoMatchException(
+                        "Does not match a valid block type: '" + input + "'");
                 }
             }
             if (nbt == null) nbt = state.getNbtData();

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/BlockCategoryMaskParser.java

@@ -26,7 +26,6 @@ import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.function.mask.BlockCategoryMask;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.internal.registry.InputParser;
-import com.sk89q.worldedit.session.request.RequestExtent;
 import com.sk89q.worldedit.world.block.BlockCategory;
 
 import java.util.Locale;

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/BlocksMaskParser.java

@@ -26,7 +26,6 @@ import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.function.mask.BlockMask;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.internal.registry.InputParser;
-import com.sk89q.worldedit.session.request.RequestExtent;
 import com.sk89q.worldedit.world.block.BaseBlock;
 
 import java.util.Set;

worldedit-core/src/main/java/com/sk89q/worldedit/extent/OutputExtent.java

@@ -24,8 +24,6 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableBlockVector2;
-import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
@@ -52,16 +50,12 @@ public interface OutputExtent {
      * @param block block to set
      * @return true if the block was successfully set (return value may not be accurate)
      * @throws WorldEditException thrown on an error
-     * @deprecated Use {@link #setBlock(int, int, int, BlockStateHolder)}
+     * @deprecated It is recommended that you use {@link #setBlock(int, int, int, BlockStateHolder)} in FAWE
      */
     @Deprecated
-    default <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 position, T block) throws WorldEditException {
-        return setBlock(position.getX(), position.getY(), position.getZ(), block);
-    }
+    <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 position, T block) throws WorldEditException;
 
-    default <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException {
-        return setBlock(MutableBlockVector3.get(x, y, z), block);
-    }
+    <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException;
 
     boolean setTile(int x, int y, int z, CompoundTag tile) throws WorldEditException;
 
@@ -72,13 +66,9 @@ public interface OutputExtent {
      * @param biome the biome to set to
      * @return true if the biome was successfully set (return value may not be accurate)
      */
-    default boolean setBiome(BlockVector2 position, BiomeType biome) {
-        return setBiome(position.getX(), 0, position.getBlockZ(), biome);
-    }
+    boolean setBiome(BlockVector2 position, BiomeType biome);
 
-    default boolean setBiome(int x, int y, int z, BiomeType biome) {
-        return setBiome(MutableBlockVector2.get(x, z), biome);
-    }
+    boolean setBiome(int x, int y, int z, BiomeType biome);
 
     /**
      * Return an {@link Operation} that should be called to tie up loose ends

worldedit-core/src/main/java/com/sk89q/worldedit/extent/PassthroughExtent.java

@@ -175,6 +175,7 @@ public class PassthroughExtent extends AbstractDelegateExtent {
         return getExtent().getBlockDistributionWithData(region);
     }
 
+    @Override
     @Nullable
     public Operation commit() {
         return getExtent().commit();
@@ -271,6 +272,7 @@ public class PassthroughExtent extends AbstractDelegateExtent {
         return getExtent().setBlock(position, block);
     }
 
+    @Override
     public <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException {
         return getExtent().setBlock(x, y, z, block);
     }
@@ -285,6 +287,7 @@ public class PassthroughExtent extends AbstractDelegateExtent {
         return getExtent().setBiome(position, biome);
     }
 
+    @Override
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
         return getExtent().setBiome(x, y, z, biome);
     }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/buffer/ForgetfulExtentBuffer.java

@@ -25,16 +25,20 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.Mask2D;
 import com.sk89q.worldedit.function.mask.Masks;
+import com.sk89q.worldedit.function.pattern.BiomePattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.AbstractRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.regions.RegionOperationException;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
-
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -46,12 +50,16 @@ import java.util.Map;
  * <p>This buffer will not attempt to return results from the buffer when
  * accessor methods (such as {@link #getBlock(BlockVector3)}) are called.</p>
  */
-public class ForgetfulExtentBuffer extends AbstractDelegateExtent implements Pattern {
+public class ForgetfulExtentBuffer extends AbstractDelegateExtent implements Pattern, BiomePattern {
 
     private final Map<BlockVector3, BaseBlock> buffer = new LinkedHashMap<>();
+    private final Map<BlockVector2, BiomeType> biomeBuffer = new LinkedHashMap<>();
     private final Mask mask;
+    private final Mask2D biomeMask;
     private BlockVector3 min = null;
+    private BlockVector2 min2d = null;
     private BlockVector3 max = null;
+    private BlockVector2 max2d = null;
 
     /**
      * Create a new extent buffer that will buffer every change.
@@ -79,6 +87,8 @@ public class ForgetfulExtentBuffer extends AbstractDelegateExtent implements Pat
         checkNotNull(delegate);
         checkNotNull(mask);
         this.mask = mask;
+        Mask2D bmask = mask.toMask2D();
+        this.biomeMask = bmask == null ? Masks.alwaysTrue2D() : bmask;
     }
 
     @Override
@@ -105,6 +115,54 @@ public class ForgetfulExtentBuffer extends AbstractDelegateExtent implements Pat
         }
     }
 
+    @Override
+    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+        // Update minimum
+        if (min2d == null) {
+            min2d = position;
+        } else {
+            min2d = min2d.getMinimum(position);
+        }
+
+        // Update maximum
+        if (max2d == null) {
+            max2d = position;
+        } else {
+            max2d = max2d.getMaximum(position);
+        }
+
+        if (biomeMask.test(position)) {
+            biomeBuffer.put(position, biome);
+            return true;
+        } else {
+            return getExtent().setBiome(position, biome);
+        }
+    }
+
+    @Override
+    public boolean setBiome(int x, int y, int z, BiomeType biome) {
+        // Update minimum
+        if (min2d == null) {
+            min2d = BlockVector2.at(x, z);
+        } else {
+            min2d = min2d.getMinimum(BlockVector2.at(x,z));
+        }
+
+        // Update maximum
+        if (max2d == null) {
+            max2d = BlockVector2.at(x,z);
+        } else {
+            max2d = max2d.getMaximum(BlockVector2.at(x,z));
+        }
+
+        if (biomeMask.test(BlockVector2.at(x,z))) {
+            biomeBuffer.put(BlockVector2.at(x,z), biome);
+            return true;
+        } else {
+            return getExtent().setBiome(x, y, z, biome);
+        }    }
+
+
     @Override
     public BaseBlock apply(BlockVector3 pos) {
         BaseBlock block = buffer.get(pos);
@@ -115,6 +173,16 @@ public class ForgetfulExtentBuffer extends AbstractDelegateExtent implements Pat
         }
     }
 
+    @Override
+    public BiomeType apply(BlockVector2 pos) {
+        BiomeType biome = biomeBuffer.get(pos);
+        if (biome != null) {
+            return biome;
+        } else {
+            return BiomeTypes.OCEAN;
+        }
+    }
+
     /**
      * Return a region representation of this buffer.
      *
@@ -151,6 +219,10 @@ public class ForgetfulExtentBuffer extends AbstractDelegateExtent implements Pat
             public Iterator<BlockVector3> iterator() {
                 return buffer.keySet().iterator();
             }
+
+            public Iterable<BlockVector2> asFlatRegion() {
+                return biomeBuffer.keySet();
+            }
         };
     }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/BlockArrayClipboard.java

@@ -216,6 +216,7 @@ public class BlockArrayClipboard implements Clipboard, Closeable {
         return false;
     }
 
+    @Override
     public boolean setTile(int x, int y, int z, CompoundTag tag) {
         x -= mx;
         y -= my;

worldedit-core/src/main/java/com/sk89q/worldedit/extent/transform/BlockTransformExtent.java

@@ -19,10 +19,27 @@
 
 package com.sk89q.worldedit.extent.transform;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.sk89q.worldedit.util.Direction.ASCENDING_EAST;
+import static com.sk89q.worldedit.util.Direction.ASCENDING_NORTH;
+import static com.sk89q.worldedit.util.Direction.ASCENDING_SOUTH;
+import static com.sk89q.worldedit.util.Direction.ASCENDING_WEST;
+import static com.sk89q.worldedit.util.Direction.DOWN;
+import static com.sk89q.worldedit.util.Direction.EAST;
+import static com.sk89q.worldedit.util.Direction.Flag;
+import static com.sk89q.worldedit.util.Direction.NORTH;
+import static com.sk89q.worldedit.util.Direction.NORTHEAST;
+import static com.sk89q.worldedit.util.Direction.NORTHWEST;
+import static com.sk89q.worldedit.util.Direction.SOUTH;
+import static com.sk89q.worldedit.util.Direction.SOUTHEAST;
+import static com.sk89q.worldedit.util.Direction.SOUTHWEST;
+import static com.sk89q.worldedit.util.Direction.UP;
+import static com.sk89q.worldedit.util.Direction.WEST;
+import static com.sk89q.worldedit.util.Direction.findClosest;
+import static com.sk89q.worldedit.util.Direction.values;
+
 import com.boydti.fawe.object.extent.ResettableExtent;
 import com.boydti.fawe.util.ReflectionUtils;
-
-import static com.google.common.base.Preconditions.checkNotNull;
 import com.sk89q.jnbt.ByteTag;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.Tag;
@@ -38,21 +55,19 @@ import com.sk89q.worldedit.registry.state.DirectionalProperty;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.registry.state.PropertyKey;
 import com.sk89q.worldedit.util.Direction;
-import static com.sk89q.worldedit.util.Direction.*;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
-import org.jetbrains.annotations.NotNull;
-
-import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import javax.annotation.Nullable;
+import org.jetbrains.annotations.NotNull;
 
 /**
  * Transforms blocks themselves (but not their position) according to a
@@ -87,11 +102,8 @@ public class BlockTransformExtent extends ResettableExtent {
 
 
     private static long combine(Direction... directions) {
-        long mask = 0;
-        for (Direction dir : directions) {
-            mask = mask | (1L << dir.ordinal());
-        }
-        return mask;
+        return Arrays.stream(directions).mapToLong(dir -> (1L << dir.ordinal()))
+            .reduce(0, (a, b) -> a | b);
     }
 
     private static long[] adapt(Direction... dirs) {
@@ -497,7 +509,7 @@ public class BlockTransformExtent extends ResettableExtent {
     }
 
     @Override
-    public boolean setBlock(int x, int y, int z, BlockStateHolder block) throws WorldEditException {
+    public <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException {
         return super.setBlock(x, y, z, transformInverse(block));
     }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/CombinedRegionFunction.java

@@ -23,11 +23,9 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.math.BlockVector3;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.List;
 
 /**
  * Executes several region functions in order.
@@ -49,7 +47,7 @@ public class CombinedRegionFunction implements RegionFunction {
      */
     public CombinedRegionFunction(Collection<RegionFunction> functions) {
         checkNotNull(functions);
-        this.functions = functions.toArray(new RegionFunction[functions.size()]);
+        this.functions = functions.toArray(new RegionFunction[0]);
     }
 
     /**
@@ -84,7 +82,7 @@ public class CombinedRegionFunction implements RegionFunction {
         checkNotNull(functions);
         ArrayList<RegionFunction> functionsList = new ArrayList<>(Arrays.asList(this.functions));
         functionsList.addAll(functions);
-        this.functions = functionsList.toArray(new RegionFunction[functionsList.size()]);
+        this.functions = functionsList.toArray(new RegionFunction[0]);
     }
 
     /**

worldedit-core/src/main/java/com/sk89q/worldedit/function/RegionFunction.java

@@ -35,4 +35,5 @@ public interface RegionFunction {
      * @throws WorldEditException thrown on an error
      */
     boolean apply(BlockVector3 position) throws WorldEditException;
+
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/biome/BiomeReplace.java

@@ -24,6 +24,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.FlatRegionFunction;
+import com.sk89q.worldedit.function.pattern.BiomePattern;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.world.biome.BiomeType;
 
@@ -33,7 +34,7 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 public class BiomeReplace implements FlatRegionFunction {
 
     private final Extent extent;
-    private BiomeType biome;
+    private BiomePattern biome;
 
     /**
      * Create a new instance.
@@ -42,15 +43,25 @@ public class BiomeReplace implements FlatRegionFunction {
      * @param biome a biome
      */
     public BiomeReplace(Extent extent, BiomeType biome) {
+        this(extent, (BiomePattern) biome);
+    }
+
+    /**
+     * Create a new instance.
+     *
+     * @param extent the extent to apply this function to
+     * @param pattern the biome pattern to set
+     */
+    public BiomeReplace(Extent extent, BiomePattern pattern) {
         checkNotNull(extent);
-        checkNotNull(biome);
+        checkNotNull(pattern);
         this.extent = extent;
-        this.biome = biome;
+        this.biome = pattern;
     }
 
     @Override
     public boolean apply(BlockVector2 position) throws WorldEditException {
-        return extent.setBiome(position, biome);
+        return extent.setBiome(position, biome.apply(position));
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/block/BlockReplace.java

@@ -50,7 +50,7 @@ public class BlockReplace implements RegionFunction {
 
     @Override
     public boolean apply(BlockVector3 position) throws WorldEditException {
-        return pattern.apply(extent, position, position);
+        return extent.setBlock(position, pattern.apply(position));
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/block/Naturalizer.java

@@ -80,7 +80,14 @@ public class Naturalizer implements LayerFunction {
     }
 
     private boolean naturalize(BlockVector3 position, int depth) throws WorldEditException {
-        return editSession.setBlock(position, getTargetBlock(depth));
+        BlockState block = editSession.getBlock(position);
+        BlockState targetBlock = getTargetBlock(depth);
+
+        if (block.equalsFuzzy(targetBlock)) {
+            return false;
+        }
+
+        return editSession.setBlock(position, targetBlock);
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/function/generator/ForestGenerator.java

@@ -53,7 +53,7 @@ public class ForestGenerator implements RegionFunction {
         BlockState block = editSession.getBlock(position);
         BlockType t = block.getBlockType();
 
-        if (t == BlockTypes.GRASS_BLOCK || t == BlockTypes.DIRT) {
+        if (t == BlockTypes.GRASS_BLOCK || t == BlockTypes.DIRT || t == BlockTypes.PODZOL || t == BlockTypes.COARSE_DIRT) {
             return treeType.generate(editSession, position.add(0, 1, 0));
         } else if (t.getMaterial().isReplacedDuringPlacement()) {
             // since the implementation's tree generators generally don't generate in non-air spots,

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/BlockMask.java

@@ -69,6 +69,7 @@ public class BlockMask extends ABlockMask {
     @Deprecated
     public BlockMask(Extent extent, Collection<BaseBlock> blocks) {
         this(extent);
+        checkNotNull(blocks);
         add(blocks);
     }
 
@@ -149,9 +150,8 @@ public class BlockMask extends ABlockMask {
      */
     @Deprecated
     public void add(Collection<BaseBlock> blocks) {
-        for (BaseBlock block : blocks) {
-            add(block.toBlockState());
-        }
+        checkNotNull(blocks);
+        blocks.forEach(baseBlock -> add(baseBlock.toBlockState()));
     }
 
     /**
@@ -235,7 +235,7 @@ public class BlockMask extends ABlockMask {
                     setType = type;
                     setStates += all.size();
                     setState = type.getDefaultState();
-                } else if (hasAny) {
+                } else {
                     for (BlockState state : all) {
                         if (test(state)) {
                             setStates++;
@@ -244,8 +244,6 @@ public class BlockMask extends ABlockMask {
                             unsetState = state;
                         }
                     }
-                } else {
-                    unsetType = type;
                 }
             }
         }
@@ -269,12 +267,8 @@ public class BlockMask extends ABlockMask {
         }
 
         if (setTypes == totalTypes - 1) {
-            if (unsetType != null) {
-                return new InverseSingleBlockTypeMask(getExtent(), unsetType);
-            } else {
             throw new IllegalArgumentException("unsetType cannot be null when passed to InverseSingleBlockTypeMask");
         }
-        }
 
         return null;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/BoundedHeightMask.java

@@ -55,4 +55,5 @@ public class BoundedHeightMask extends AbstractMask {
     public Mask2D toMask2D() {
         return null;
     }
+
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/ExistingBlockMask.java

@@ -40,7 +40,7 @@ public class ExistingBlockMask extends AbstractExtentMask {
 
     @Override
     public boolean test(BlockVector3 vector) {
-        return !vector.getBlock(getExtent()).getMaterial().isAir();
+        return !getExtent().getBlock(vector).getBlockType().getMaterial().isAir();
     }
 
     @Nullable

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/Mask.java

@@ -38,17 +38,6 @@ public interface Mask {
      */
     boolean test(BlockVector3 vector);
 
-    default Filter toFilter(Runnable run) {
-        return new Filter() {
-            @Override
-            public void applyBlock(FilterBlock block) {
-                if (test(block)) {
-                    run.run();
-                }
-            }
-        };
-    }
-
     default <T extends Filter> DelegateFilter<T> toFilter(T filter) {
         return new DelegateFilter<T>(filter) {
             @Override

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/MaskIntersection.java

@@ -37,7 +37,6 @@ import java.util.Set;
 import java.util.function.Function;
 import javax.annotation.Nullable;
 
-
 /**
  * Combines several masks and requires that all masks return true
  * when a certain position is tested. It serves as a logical AND operation
@@ -223,6 +222,10 @@ public class MaskIntersection extends AbstractMask {
 
     @Override
     public boolean test(BlockVector3 vector) {
+        if (masksArray.length == 0) {
+            return false;
+        }
+
         for (Mask mask : masksArray) {
             if (!mask.test(vector)) {
                 return false;

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/Masks.java

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.function.mask;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
-import com.boydti.fawe.beta.FilterBlock;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 
@@ -32,8 +31,8 @@ import javax.annotation.Nullable;
  */
 public final class Masks {
 
-    protected static final AlwaysTrue ALWAYS_TRUE = new AlwaysTrue();
-    protected static final AlwaysFalse ALWAYS_FALSE = new AlwaysFalse();
+    static final AlwaysTrue ALWAYS_TRUE = new AlwaysTrue();
+    static final AlwaysFalse ALWAYS_FALSE = new AlwaysFalse();
 
     private Masks() {
     }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/OffsetMask.java

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.function.mask;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
-import com.boydti.fawe.beta.FilterBlock;
 import com.sk89q.worldedit.math.BlockVector3;
 
 import javax.annotation.Nullable;

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/RegionMask.java

@@ -70,4 +70,5 @@ public class RegionMask extends AbstractMask {
     public Mask2D toMask2D() {
         return null;
     }
+
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/operation/ChangeSetExecutor.java

@@ -66,16 +66,15 @@ public class ChangeSetExecutor implements Operation {
 
     @Override
     public Operation resume(RunContext run) throws WorldEditException {
+        while (iterator.hasNext()) {
             Change change = iterator.next();
             if (type == Type.UNDO) {
-            while (iterator.hasNext()) {
                 change.undo(context);
-            }
             } else {
-            while (iterator.hasNext()) {
                 change.redo(context);
             }
         }
+
         return null;
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/BiomePattern.java

@@ -0,0 +1,37 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.function.pattern;
+
+import com.sk89q.worldedit.math.BlockVector2;
+import com.sk89q.worldedit.world.biome.BiomeType;
+
+/**
+ * Returns a {@link BiomeType} for a given position.
+ */
+public interface BiomePattern {
+
+    /**
+     * Return a {@link BiomeType} for the given position.
+     *
+     * @param position the position
+     * @return a block
+     */
+    BiomeType apply(BlockVector2 position);
+}

worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/BlockPattern.java

@@ -67,4 +67,5 @@ public class BlockPattern extends AbstractPattern {
     public BaseBlock apply(BlockVector3 position) {
         return block;
     }
+
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/WaterloggedRemover.java

@@ -21,6 +21,7 @@ package com.sk89q.worldedit.function.pattern;
 
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.registry.state.PropertyKey;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
@@ -64,9 +65,10 @@ public class WaterloggedRemover extends AbstractExtentPattern {
     @Override
     public BaseBlock apply(BlockVector3 position) {
         BaseBlock block = getExtent().getFullBlock(position);
-        BlockState newState = remap[block.getOrdinal()];
-        if (newState != null) {
-            return newState.toBaseBlock(block.getNbtData());
+        @SuppressWarnings("unchecked")
+        Property<Object> prop = (Property<Object>) remap[block.getOrdinal()].getBlockType().getPropertyMap().getOrDefault("waterlogged", null);
+        if (prop != null) {
+            return block.with(prop, false);
         }
         return BlockTypes.AIR.getDefaultState().toBaseBlock();
     }

worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/BreadthFirstSearch.java

@@ -78,9 +78,9 @@ public abstract class BreadthFirstSearch implements Operation {
     }
 
     private final RegionFunction function;
+    private BlockVectorSet queue = new BlockVectorSet();
+    private BlockVectorSet visited = new BlockVectorSet();
     private BlockVector3[] directions;
-    private BlockVectorSet visited;
-    private BlockVectorSet queue;
     private int affected = 0;
     private int currentDepth = 0;
     private final int maxDepth;
@@ -98,8 +98,6 @@ public abstract class BreadthFirstSearch implements Operation {
 
     public BreadthFirstSearch(RegionFunction function, int maxDepth) {
         checkNotNull(function);
-        this.queue = new BlockVectorSet();
-        this.visited = new BlockVectorSet();
         this.function = function;
         this.directions = DEFAULT_DIRECTIONS;
         this.maxDepth = maxDepth;
@@ -121,6 +119,8 @@ public abstract class BreadthFirstSearch implements Operation {
      * unit vectors. An example of a valid direction is
      * {@code BlockVector3.at(1, 0, 1)}.</p>
      *
+     * <p>The list of directions can be cleared.</p>
+     *
      * @return the list of directions
      */
     public Collection<BlockVector3> getDirections() {
@@ -260,6 +260,7 @@ public abstract class BreadthFirstSearch implements Operation {
             tmp.clear();
             tempQueue = tmp;
         }
+
         return null;
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/FlatRegionVisitor.java

@@ -70,6 +70,7 @@ public class FlatRegionVisitor implements Operation {
                 affected++;
             }
         }
+
         return null;
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/RegionVisitor.java

@@ -20,14 +20,12 @@
 package com.sk89q.worldedit.function.visitor;
 
 import com.boydti.fawe.config.BBC;
-import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.function.RegionFunction;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.operation.RunContext;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
-
 import java.util.List;
 
 /**
@@ -42,17 +40,12 @@ public class RegionVisitor implements Operation {
     public int affected = 0;
     public final Iterable<? extends BlockVector3> iterable;
 
-    /**
-     * Deprecated in favor of the other constructors which will preload chunks during iteration
-     *
-     * @param region
-     * @param function
-     */
+
+    @Deprecated
     public RegionVisitor(Region region, RegionFunction function) {
         this((Iterable<BlockVector3>) region, function);
     }
 
-    @Deprecated
     public RegionVisitor(Iterable<BlockVector3> iterable, RegionFunction function) {
         this.region = iterable instanceof Region ? (Region) iterable : null;
         this.function = function;
@@ -75,6 +68,7 @@ public class RegionVisitor implements Operation {
                 affected++;
             }
         }
+
         return null;
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/internal/command/exception/WorldEditExceptionConverter.java

@@ -85,6 +85,7 @@ public class WorldEditExceptionConverter extends ExceptionConverterHelper {
     public void convert(MissingWorldException e) throws CommandException {
         throw newCommandException("You need to provide a world (Try //world)", e);
     }
+
     @ExceptionMatch
     public void convert(UnknownItemException e) throws CommandException {
         throw newCommandException("Block name '" + e.getID() + "' was not recognized.", e);

worldedit-core/src/main/java/com/sk89q/worldedit/internal/expression/Expression.java

@@ -86,7 +86,6 @@ public class Expression {
                     .build());
 
     private final Map<String, RValue> variables = new HashMap<>();
-    private final String[] variableNames;
     private Variable[] variableArray;
     private RValue root;
     private final Functions functions = new Functions();
@@ -97,7 +96,6 @@ public class Expression {
     }
 
     public Expression(double constant) {
-        variableNames = null;
         root = new Constant(0, constant);
     }
 
@@ -106,7 +104,6 @@ public class Expression {
     }
 
     private Expression(List<Token> tokens, String... variableNames) throws ExpressionException {
-        this.variableNames = variableNames;
 
         variables.put("e", new Constant(-1, Math.E));
         variables.put("pi", new Constant(-1, Math.PI));
@@ -115,12 +112,11 @@ public class Expression {
 
         variableArray = new Variable[variableNames.length];
         for (int i = 0; i < variableNames.length; i++) {
-            String variableName = variableNames[i];
-            if (variables.containsKey(variableName)) {
-                throw new ExpressionException(-1, "Tried to overwrite identifier '" + variableName + "'");
+            if (variables.containsKey(variableNames[i])) {
+                throw new ExpressionException(-1, "Tried to overwrite identifier '" + variableNames[i] + "'");
             }
             Variable var = new Variable(0);
-            variables.put(variableName, var);
+            variables.put(variableNames[i], var);
             variableArray[i] = var;
         }
 
@@ -139,14 +135,7 @@ public class Expression {
         return evaluateTimeout(WorldEdit.getInstance().getConfiguration().calculationTimeout, values);
     }
 
-    public double evaluateTimeout(int timeout, double x, double y) throws EvaluationException {
-        if (root instanceof Constant) return root.getValue();
-        variableArray[0].value = x;
-        variableArray[1].value = y;
-        return evaluateFinal(timeout);
-    }
-
-    public double evaluateTimeout(int timeout, double x, double y, double z) throws EvaluationException {
+    private double evaluateTimeout(int timeout, double x, double y, double z) throws EvaluationException {
         if (root instanceof Constant) return root.getValue();
         variableArray[0].value = x;
         variableArray[1].value = y;
@@ -156,8 +145,8 @@ public class Expression {
 
     public double evaluateTimeout(int timeout, double... values) throws EvaluationException {
         if (root instanceof Constant) return root.getValue();
-        for (int i = 0; i < values.length; i++) {
-            Variable var = variableArray[i];
+        for (int i = 0; i < values.length; ++i) {
+            final Variable var = variableArray[i];
             var.value = values[i];
         }
         return evaluateFinal(timeout);
@@ -167,7 +156,7 @@ public class Expression {
         if (root instanceof Constant) {
             return root.getValue();
         }
-        for (int i = 0; i < values.length; i++) {
+        for (int i = 0; i < values.length; ++i) {
             Variable var = variableArray[i];
             var.value = values[i];
         }

worldedit-core/src/main/java/com/sk89q/worldedit/internal/util/Substring.java

@@ -19,6 +19,8 @@
 
 package com.sk89q.worldedit.internal.util;
 
+import static com.google.common.base.Preconditions.checkArgument;
+
 import java.util.Objects;
 
 /**
@@ -31,7 +33,7 @@ public final class Substring {
      * a Substring.
      */
     public static Substring from(String original, int start) {
-        return wrap(original.substring(start), start, original.length());
+        return new Substring(original.substring(start), start, original.length());
     }
 
     /**
@@ -39,13 +41,15 @@ public final class Substring {
      * a Substring.
      */
     public static Substring from(String original, int start, int end) {
-        return wrap(original.substring(start, end), start, end);
+        return new Substring(original.substring(start, end), start, end);
     }
 
     /**
      * Wrap the given parameters into a Substring instance.
      */
     public static Substring wrap(String substring, int start, int end) {
+        checkArgument(0 <= start, "Start must be greater than or equal to zero");
+        checkArgument(start <= end, "End must be greater than or equal to start");
         return new Substring(substring, start, end);
     }