Merge remote-tracking branch 'upstream/master' into breaking

build.gradle

@@ -8,20 +8,19 @@ buildscript {
 
     configurations.all {
         resolutionStrategy {
-            force 'com.google.guava:guava:21.0'
+            force 'commons-io:commons-io:2.4'
-            force 'org.ow2.asm:asm:6.0_BETA'
         }
     }
 
     dependencies {
         classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.4'
-        classpath 'org.jfrog.buildinfo:build-info-extractor-gradle:4.7.5'
+        classpath 'org.jfrog.buildinfo:build-info-extractor-gradle:4.8.1'
-        classpath 'org.ajoberstar:gradle-git:1.7.2'
     }
 }
 
 plugins {
     id 'net.minecrell.licenser' version '0.4.1' apply false
+    id "org.ajoberstar.grgit" version "2.3.0"
 }
 
 apply plugin: 'java'

config/checkstyle/checkstyle.xml

@@ -5,8 +5,9 @@
 <module name="Checker">
   <!-- Tabs are strictly banned -->
   <module name="FileTabCharacter"/>
-
+  <module name="SuppressWarningsFilter" />
   <module name="TreeWalker">
+    <module name="SuppressWarningsHolder" /> <!-- allows for @SuppressWarnings annotation -->
     <!-- Important basics -->
     <!-- <module name="PackageDeclaration"/> Unlikely that we would miss this in a PR -->
     <module name="OuterTypeFilename"/> <!-- TypeName -> TypeName.java -->

config/checkstyle/import-control.xml

@@ -15,6 +15,7 @@
   <allow pkg="com.google.gson"/>
   <allow pkg="net.royawesome.jlibnoise"/>
   <allow pkg="org.json.simple" />
+  <allow pkg="org.slf4j"/>
 
   <subpackage name="util.yaml">
     <allow pkg="org.yaml.snakeyaml"/>
@@ -53,6 +54,7 @@
       <allow pkg="org.lwjgl"/>
       <allow pkg="io.netty.buffer"/>
       <allow pkg="org.spongepowered.api" />
+      <allow pkg="com.mojang.brigadier" />
     </subpackage>
 
     <subpackage name="sponge">

gradle.properties

@@ -0,0 +1,4 @@
+# Sets default memory used for gradle commands. Can be overridden by user or command line properties.
+# This is required to provide enough memory for the Minecraft decompilation process.
+org.gradle.jvmargs=-Xmx3G
+org.gradle.daemon=false

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Mon Mar 25 18:59:14 EDT 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

worldedit-bukkit/build.gradle

@@ -4,14 +4,17 @@ apply plugin: 'maven'
 
 repositories {
     maven { url "https://hub.spigotmc.org/nexus/content/groups/public" }
+    maven { url "https://repo.codemc.org/repository/maven-public" }
+    maven { url 'https://papermc.io/repo/repository/maven-public/' }
 }
 
 dependencies {
     compile project(':worldedit-core')
+
     compile 'net.milkbowl.vault:VaultAPI:1.7'
     compile 'com.sk89q:dummypermscompat:1.10'
     compile 'com.destroystokyo.paper:paper-api:1.13.2-R0.1-SNAPSHOT'
-    compile 'org.spigotmc:spigot:1.13.2-R0.1-SNAPSHOT'
+    compile 'org.slf4j:slf4j-jdk14:1.7.26'
     testCompile 'org.mockito:mockito-core:1.9.0-rc1'
     compile 'com.massivecraft:factions:2.8.0'
     compile 'com.drtshock:factions:1.6.9.5'
@@ -77,7 +80,10 @@ task copyFiles {
 
 shadowJar {
     dependencies {
+        relocate "org.slf4j", "com.sk89q.worldedit.slf4j"
         include(dependency(':worldedit-core'))
+        include(dependency('org.slf4j:slf4j-api'))
+        include(dependency("org.slf4j:slf4j-jdk14"))
     }
     archiveName = "${parent.name}-${project.name.replaceAll("worldedit-", "")}-${parent.version}.jar"
     destinationDir = file '../target'

worldedit-bukkit/src/main/java/com/sk89q/wepif/FlatFilePermissionsResolver.java

@@ -22,6 +22,8 @@ package com.sk89q.wepif;
 import com.sk89q.util.yaml.YAMLProcessor;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -32,12 +34,10 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 public class FlatFilePermissionsResolver implements PermissionsResolver {
 
-    private static final Logger log = Logger.getLogger(FlatFilePermissionsResolver.class.getCanonicalName());
+    private static final Logger log = LoggerFactory.getLogger(FlatFilePermissionsResolver.class);
 
     private Map<String, Set<String>> userPermissionsCache;
     private Set<String> defaultPermissionsCache;
@@ -98,7 +98,7 @@ public class FlatFilePermissionsResolver implements PermissionsResolver {
                 }
             }
         } catch (IOException e) {
-            log.log(Level.WARNING, "Failed to load permissions", e);
+            log.warn("Failed to load permissions", e);
         } finally {
             try {
                 if (buff != null) {
@@ -164,7 +164,7 @@ public class FlatFilePermissionsResolver implements PermissionsResolver {
                 }
             }
         } catch (IOException e) {
-            log.log(Level.WARNING, "Failed to load permissions", e);
+            log.warn("Failed to load permissions", e);
         } finally {
             try {
                 if (buff != null) {

worldedit-bukkit/src/main/java/com/sk89q/wepif/NijiPermissionsResolver.java

@@ -28,13 +28,12 @@ import org.bukkit.command.PluginCommand;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
-
+import org.slf4j.Logger;
-import java.util.logging.Level;
+import org.slf4j.LoggerFactory;
-import java.util.logging.Logger;
 
 public class NijiPermissionsResolver implements PermissionsResolver {
 
-    private static final Logger log = Logger.getLogger(NijiPermissionsResolver.class.getCanonicalName());
+    private static final Logger log = LoggerFactory.getLogger(NijiPermissionsResolver.class);
 
     private Server server;
     private Permissions api;
@@ -84,7 +83,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return api.Security.permission(player, permission);
             }
         } catch (Throwable t) {
-            log.log(Level.WARNING, "Failed to check permissions", t);
+            log.warn("Failed to check permissions", t);
             return false;
         }
     }
@@ -98,7 +97,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return api.getHandler().has(server.getPlayerExact(name), permission);
             }
         } catch (Throwable t) {
-            log.log(Level.WARNING, "Failed to check permissions", t);
+            log.warn("Failed to check permissions", t);
             return false;
         }
     }
@@ -115,7 +114,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return api.Security.inGroup(name, group);
             }
         } catch (Throwable t) {
-            log.log(Level.WARNING, "Failed to check groups", t);
+            log.warn("Failed to check groups", t);
             return false;
         }
     }
@@ -139,7 +138,7 @@ public class NijiPermissionsResolver implements PermissionsResolver {
                 return groups;
             }
         } catch (Throwable t) {
-            log.log(Level.WARNING, "Failed to get groups", t);
+            log.warn("Failed to get groups", t);
             return new String[0];
         }
     }

worldedit-bukkit/src/main/java/com/sk89q/wepif/PermissionsResolverManager.java

@@ -27,6 +27,8 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.server.PluginDisableEvent;
 import org.bukkit.event.server.PluginEnableEvent;
 import org.bukkit.plugin.Plugin;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -35,8 +37,6 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 public class PermissionsResolverManager implements PermissionsResolver {
 
@@ -85,7 +85,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
     private Server server;
     private PermissionsResolver permissionResolver;
     private YAMLProcessor config;
-    private Logger logger = Logger.getLogger(getClass().getCanonicalName());
+    private Logger logger = LoggerFactory.getLogger(getClass());
     private List<Class<? extends PermissionsResolver>> enabledResolvers = new ArrayList<>();
 
     @SuppressWarnings("unchecked")
@@ -119,7 +119,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
                     break;
                 }
             } catch (Throwable e) {
-                logger.log(Level.WARNING, "Error in factory method for " + resolverClass.getSimpleName(), e);
+                logger.warn("Error in factory method for " + resolverClass.getSimpleName(), e);
                 continue;
             }
         }
@@ -195,14 +195,14 @@ public class PermissionsResolverManager implements PermissionsResolver {
             try {
                 file.createNewFile();
             } catch (IOException e) {
-                logger.log(Level.WARNING, "Failed to create new configuration file", e);
+                logger.warn("Failed to create new configuration file", e);
             }
         }
         config = new YAMLProcessor(file, false, YAMLFormat.EXTENDED);
         try {
             config.load();
         } catch (IOException e) {
-            logger.log(Level.WARNING, "Error loading WEPIF configuration", e);
+            logger.warn("Error loading WEPIF configuration", e);
         }
         List<String> keys = config.getKeys(null);
         config.setHeader(CONFIG_HEADER);
@@ -232,7 +232,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
                 } catch (ClassNotFoundException e) {}
 
                 if (next == null || !PermissionsResolver.class.isAssignableFrom(next)) {
-                    logger.warning("WEPIF: Invalid or unknown class found in enabled resolvers: "
+                    logger.warn("WEPIF: Invalid or unknown class found in enabled resolvers: "
                             + nextName + ". Moving to disabled resolvers list.");
                     i.remove();
                     disabledResolvers.add(nextName);

worldedit-bukkit/src/main/java/com/sk89q/wepif/VaultResolver.java

@@ -35,6 +35,9 @@ public class VaultResolver implements PermissionsResolver {
             return null;
         }
         RegisteredServiceProvider<Permission> rsp = server.getServicesManager().getRegistration(Permission.class);
+        if (rsp == null) {
+            return null;
+        }
         perms = rsp.getProvider();
         if (perms == null) {
             return null;

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

@@ -19,15 +19,25 @@
 
 package com.sk89q.worldedit.bukkit;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.common.base.Function;
+import com.sk89q.worldedit.NotABlockException;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.IBukkitAdapter;
 import com.sk89q.worldedit.bukkit.adapter.SimpleBukkitAdapter;
 import com.sk89q.worldedit.entity.Entity;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.math.BlockVector3;
 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;
@@ -37,6 +47,7 @@ import com.sk89q.worldedit.world.gamemode.GameMode;
 import com.sk89q.worldedit.world.item.ItemType;
 
 import org.bukkit.Material;
+import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
@@ -122,6 +133,26 @@ public enum BukkitAdapter {
         return getAdapter().adapt(gameMode);
     }
 
+    /**
+     * Create a WorldEdit BiomeType from a Bukkit one.
+     *
+     * @param biome Bukkit Biome
+     * @return WorldEdit BiomeType
+     */
+    public static BiomeType adapt(Biome biome) {
+        return getAdapter().adapt(biome);
+    }
+
+    public static Biome adapt(BiomeType biomeType) {
+        getAdapter().adapt(biomeType);
+    }
+
+    /**
+     * Create a WorldEdit EntityType from a Bukkit one.
+     *
+     * @param entityType Bukkit EntityType
+     * @return WorldEdit EntityType
+     */
     public static EntityType adapt(org.bukkit.entity.EntityType entityType) {
         return getAdapter().adapt(entityType);
     }
@@ -146,6 +177,12 @@ public enum BukkitAdapter {
         return getAdapter().adapt(material);
     }
 
+    /**
+     * Create a Bukkit BlockData from a WorldEdit BlockStateHolder
+     *
+     * @param block The WorldEdit BlockStateHolder
+     * @return The Bukkit BlockData
+     */
 	public static <B extends BlockStateHolder<B>> BlockData adapt(B block) {
 		return getAdapter().adapt(block);
     }

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

@@ -19,16 +19,11 @@
 
 package com.sk89q.worldedit.bukkit;
 
-import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
-import com.sk89q.worldedit.world.biome.BaseBiome;
 import com.sk89q.worldedit.world.biome.BiomeData;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.registry.BiomeRegistry;
 import org.bukkit.block.Biome;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
 import javax.annotation.Nullable;
 
 /**
@@ -41,35 +36,9 @@ class BukkitBiomeRegistry implements BiomeRegistry {
 
     @Nullable
     @Override
-    public BaseBiome createFromId(int id) {
+    public BiomeData getData(BiomeType biome) {
-        return new BaseBiome(id);
+        final Biome bukkitBiome = BukkitAdapter.adapt(biome);
-    }
+        return bukkitBiome == null ? null : bukkitBiome::name;
-
-    @Override
-    public List<BaseBiome> getBiomes() {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
-        if (adapter != null) {
-            List<BaseBiome> biomes = new ArrayList<>();
-            for (Biome biome : Biome.values()) {
-                int biomeId = adapter.getBiomeId(biome);
-                biomes.add(new BaseBiome(biomeId));
-            }
-            return biomes;
-        } else {
-            return Collections.emptyList();
-        }
-    }
-
-    @Nullable
-    @Override
-    public BiomeData getData(BaseBiome biome) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
-        if (adapter != null) {
-            final Biome bukkitBiome = adapter.getBiome(biome.getId());
-            return bukkitBiome::name;
-        } else {
-            return null;
-        }
     }
 
 }

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

@@ -19,8 +19,6 @@
 
 package com.sk89q.worldedit.bukkit;
 
-import static com.google.common.base.Preconditions.checkNotNull;
-
 import com.sk89q.bukkit.util.CommandInspector;
 import com.sk89q.minecraft.util.commands.CommandLocals;
 import com.sk89q.worldedit.extension.platform.Actor;
@@ -29,12 +27,14 @@ import com.sk89q.worldedit.util.command.Description;
 import com.sk89q.worldedit.util.command.Dispatcher;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-import java.util.logging.Logger;
+import static com.google.common.base.Preconditions.checkNotNull;
 
 class BukkitCommandInspector implements CommandInspector {
 
-    private static final Logger logger = Logger.getLogger(BukkitCommandInspector.class.getCanonicalName());
+    private static final Logger logger = LoggerFactory.getLogger(BukkitCommandInspector.class);
     private final WorldEditPlugin plugin;
     private final Dispatcher dispatcher;
 
@@ -51,7 +51,7 @@ class BukkitCommandInspector implements CommandInspector {
         if (mapping != null) {
             return mapping.getDescription().getDescription();
         } else {
-            logger.warning("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            logger.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
             return "Help text not available";
         }
     }
@@ -63,7 +63,7 @@ class BukkitCommandInspector implements CommandInspector {
             Description description = mapping.getDescription();
             return "Usage: " + description.getUsage() + (description.getHelp() != null ? "\n" + description.getHelp() : "");
         } else {
-            logger.warning("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            logger.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
             return "Help text not available";
         }
     }
@@ -76,7 +76,7 @@ class BukkitCommandInspector implements CommandInspector {
             locals.put(Actor.class, plugin.wrapCommandSender(sender));
             return mapping.getCallable().testPermission(locals);
         } else {
-            logger.warning("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            logger.warn("BukkitCommandInspector doesn't know how about the command '" + command + "'");
             return false;
         }
     }

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

@@ -22,6 +22,7 @@ package com.sk89q.worldedit.bukkit;
 import com.sk89q.util.yaml.YAMLProcessor;
 import com.sk89q.worldedit.util.YAMLConfiguration;
 import com.sk89q.worldedit.util.report.Unreported;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 
@@ -34,7 +35,7 @@ public class BukkitConfiguration extends YAMLConfiguration {
     @Unreported private final WorldEditPlugin plugin;
 
     public BukkitConfiguration(YAMLProcessor config, WorldEditPlugin plugin) {
-        super(config, plugin.getLogger());
+        super(config, LoggerFactory.getLogger(plugin.getLogger().getName()));
         this.plugin = plugin;
     }
 

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

@@ -1,91 +0,0 @@
-/*
- * 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.bukkit;
-
-/**
- * Adds methods to test if different API methods are possible based on implementation.
- */
-public class BukkitImplementationTester {
-
-    private BukkitImplementationTester() {
-    }
-
-    /**
-     * Known Bukkit implementations
-     */
-    public enum BukkitImplementation {
-        CRAFTBUKKIT,
-        SPIGOT,
-        PAPER,
-    }
-
-    private static final String implementationMessage = "************************************************" +
-                                                        "* Note: PaperMC (https://papermc.io/) is       *" +
-                                                        "* recommended for optimal performance with     *" +
-                                                        "* WorldEdit, WorldGuard, or CraftBook.         *" +
-                                                        "************************************************";
-
-    private static BukkitImplementation implementation;
-
-    /**
-     * Gets the implementation currently in use on the server.
-     *
-     * @return The server implementation
-     */
-    public static BukkitImplementation getImplementation() {
-        if (implementation == null) {
-            try {
-                Class.forName("com.destroystokyo.paper.PaperConfig");
-                implementation = BukkitImplementation.PAPER;
-            } catch (Exception e) {
-                try {
-                    Class.forName("org.spigotmc.SpigotConfig");
-                    implementation = BukkitImplementation.SPIGOT;
-                } catch (Exception e2) {
-                    implementation = BukkitImplementation.CRAFTBUKKIT;
-                }
-            }
-
-            if (implementation != BukkitImplementation.PAPER) {
-//                 Bukkit.getServer().getConsoleSender().sendMessage(implementationMessage); // TODO Decide if good idea.
-            }
-        }
-
-        return implementation;
-    }
-
-    /**
-     * Check if this implementation is compatible with Spigot APIs
-     *
-     * @return If compatible with Spigot APIs
-     */
-    public static boolean isSpigotCompatible() {
-        return getImplementation() == BukkitImplementation.SPIGOT || getImplementation() == BukkitImplementation.PAPER;
-    }
-
-    /**
-     * Check if this implementation is compatible with Paper APIs
-     *
-     * @return If compatible with Paper APIs
-     */
-    public static boolean isPaperCompatible() {
-        return getImplementation() == BukkitImplementation.PAPER;
-    }
-}

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

@@ -61,6 +61,10 @@ public class BukkitPlayer extends AbstractPlayerActor {
     private Player player;
     private WorldEditPlugin plugin;
 
+    public BukkitPlayer(Player player) {
+        this(WorldEditPlugin.getInstance(), player);
+    }
+
     public BukkitPlayer(WorldEditPlugin plugin, Player player) {
         this.plugin = plugin;
         this.player = player;

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

@@ -19,7 +19,11 @@
 
 package com.sk89q.worldedit.bukkit;
 
-import com.sk89q.worldedit.world.registry.*;
+import com.sk89q.worldedit.world.registry.BiomeRegistry;
+import com.sk89q.worldedit.world.registry.BlockCategoryRegistry;
+import com.sk89q.worldedit.world.registry.BlockRegistry;
+import com.sk89q.worldedit.world.registry.BundledRegistries;
+import com.sk89q.worldedit.world.registry.ItemCategoryRegistry;
 
 /**
  * World data for the Bukkit platform.
@@ -45,11 +49,6 @@ class BukkitRegistries extends BundledRegistries {
         return blockRegistry;
     }
 
-    @Override
-    public BlockCategoryRegistry getBlockCategoryRegistry() {
-    	return blockCategoryRegistry;
-    }
-
     @Override
     public BiomeRegistry getBiomeRegistry() {
         return biomeRegistry;
@@ -60,6 +59,11 @@ class BukkitRegistries extends BundledRegistries {
         return itemRegistry;
     }
 
+    @Override
+    public BlockCategoryRegistry getBlockCategoryRegistry() {
+        return blockCategoryRegistry;
+    }
+    
     @Override
     public ItemCategoryRegistry getItemCategoryRegistry() {
     	return itemCategoryRegistry;

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

@@ -18,7 +18,6 @@
 
 package com.sk89q.worldedit.bukkit;
 
-
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
@@ -33,7 +32,8 @@ import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.TreeGenerator;
 import com.sk89q.worldedit.world.AbstractWorld;
-import com.sk89q.worldedit.world.biome.BaseBiome;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.weather.WeatherType;
 import com.sk89q.worldedit.world.weather.WeatherTypes;
@@ -41,13 +41,13 @@ import com.sk89q.worldedit.world.weather.WeatherTypes;
 import org.bukkit.Effect;
 import org.bukkit.TreeType;
 import org.bukkit.World;
-import org.bukkit.block.Biome;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockState;
 import org.bukkit.block.Chest;
 import org.bukkit.entity.Entity;
 import org.bukkit.inventory.DoubleChestInventory;
 import org.bukkit.inventory.Inventory;
+import org.slf4j.Logger;
 
 import javax.annotation.Nullable;
 import java.lang.ref.WeakReference;
@@ -56,8 +56,6 @@ import java.util.EnumMap;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import static com.google.common.base.Preconditions.checkNotNull;
 
 public class BukkitWorld extends AbstractWorld {
@@ -118,9 +116,9 @@ public class BukkitWorld extends AbstractWorld {
                     return null;
                 }
             } catch (Exception e) {
-                logger.warning("Corrupt entity found when creating: " + entity.getType().getId());
+                logger.warn("Corrupt entity found when creating: " + entity.getType().getId());
                 if (entity.getNbtData() != null) {
-                    logger.warning(entity.getNbtData().toString());
+                    logger.warn(entity.getNbtData().toString());
                 }
                 e.printStackTrace();
                 return null;
@@ -183,7 +181,7 @@ public class BukkitWorld extends AbstractWorld {
             try {
                 getWorld().regenerateChunk(chunk.getBlockX(), chunk.getBlockZ());
             } catch (Throwable t) {
-                logger.log(Level.WARNING, "Chunk generation via Bukkit raised an error", t);
+                logger.warn("Chunk generation via Bukkit raised an error", t);
             }
 
             // Then restore
@@ -280,7 +278,7 @@ public class BukkitWorld extends AbstractWorld {
         treeTypeMapping.put(TreeGenerator.TreeType.RANDOM_MUSHROOM, TreeType.BROWN_MUSHROOM);
         for (TreeGenerator.TreeType type : TreeGenerator.TreeType.values()) {
             if (treeTypeMapping.get(type) == null) {
-                WorldEdit.logger.severe("No TreeType mapping for TreeGenerator.TreeType." + type);
+                WorldEdit.logger.error("No TreeType mapping for TreeGenerator.TreeType." + type);
             }
         }
     }
@@ -426,8 +424,8 @@ public class BukkitWorld extends AbstractWorld {
                 return adapter.setBlock(BukkitAdapter.adapt(getWorld(), position), block, notifyAndLight);
             } catch (Exception e) {
                 if (block instanceof BaseBlock && ((BaseBlock) block).getNbtData() != null) {
-                    logger.warning("Tried to set a corrupt tile entity at " + position.toString());
+                    logger.warn("Tried to set a corrupt tile entity at " + position.toString());
-                    logger.warning(((BaseBlock)block).getNbtData().toString());
+                    logger.warn(((BaseBlock) block).getNbtData().toString());
                 }
                 e.printStackTrace();
                 Block bukkitBlock = getWorld().getBlockAt(position.getBlockX(), position.getBlockY(), position.getBlockZ());
@@ -468,25 +466,13 @@ public class BukkitWorld extends AbstractWorld {
     }
 
     @Override
-    public BaseBiome getBiome(BlockVector2 position) {
+    public BiomeType getBiome(BlockVector2 position) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        return BukkitAdapter.adapt(getWorld().getBiome(position.getBlockX(), position.getBlockZ()));
-        if (adapter != null) {
-            int id = adapter.getBiomeId(getWorld().getBiome(position.getBlockX(), position.getBlockZ()));
-            return new BaseBiome(id);
-        } else {
-            return new BaseBiome(0);
-        }
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BaseBiome biome) {
+    public boolean setBiome(BlockVector2 position, BiomeType biome) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        getWorld().setBiome(position.getBlockX(), position.getBlockZ(), BukkitAdapter.adapt(biome));
-        if (adapter != null) {
-            Biome bukkitBiome = adapter.getBiome(biome.getId());
-            getWorld().setBiome(position.getBlockX(), position.getBlockZ(), bukkitBiome);
         return true;
-        } else {
-            return false;
-        }
     }
 }

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

@@ -19,6 +19,8 @@
 
 package com.sk89q.worldedit.bukkit;
 
+import com.bekvon.bukkit.residence.commands.message;
+import com.bekvon.bukkit.residence.containers.cmd;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.bukkit.FaweBukkit;
 import com.boydti.fawe.bukkit.adapter.v1_13_1.Spigot_v1_13_R2;
@@ -34,32 +36,49 @@ import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplLoader;
 import com.sk89q.worldedit.event.platform.CommandEvent;
 import com.sk89q.worldedit.event.platform.PlatformReadyEvent;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.extension.platform.NoCapablePlatformException;
 import com.sk89q.worldedit.extension.platform.Platform;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
+import com.sk89q.worldedit.registry.state.Property;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.block.BlockCategory;
+import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockType;
+import com.sk89q.worldedit.world.block.FuzzyBlockState;
+import com.sk89q.worldedit.world.entity.EntityType;
+import com.sk89q.worldedit.world.item.ItemCategory;
+import com.sk89q.worldedit.world.item.ItemType;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
+import org.bstats.bukkit.Metrics;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
+import org.bukkit.Tag;
+import org.bukkit.block.Biome;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.*;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.plugin.java.JavaPluginLoader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
-import java.io.*;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.lang.reflect.Field;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.jar.JarFile;
 import java.util.logging.Level;
-import java.util.logging.Logger;
 import java.util.zip.ZipEntry;
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -70,7 +89,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
 {
 
-    private static final Logger log = Logger.getLogger("FastAsyncWorldEdit");
+    private static final Logger log = LoggerFactory.getLogger(WorldEditPlugin.class);
     public static final String CUI_PLUGIN_CHANNEL = "worldedit:cui";
     private static WorldEditPlugin INSTANCE;
 
@@ -139,12 +158,8 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         return CUI_PLUGIN_CHANNEL;
     }
 
-    /**
-     * Called on plugin enable.
-     */
-    @SuppressWarnings("AccessStaticViaInstance")
     @Override
-    public void onEnable() {
+    public void onLoad() {
         rename();
         this.INSTANCE = this;
         FaweBukkit imp = new FaweBukkit(this);
@@ -163,6 +178,16 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         loadConfig(); // Load configuration
         fail(() -> PermissionsResolverManager.initialize(INSTANCE), "Failed to initialize permissions resolver");
 
+    }
+
+    /**
+     * Called on plugin enable.
+     */
+    @Override
+    public void onEnable() {
+        setupTags(); // these have to be done post-world since they rely on MC registries. the other ones just use Bukkit enums
+
+        PermissionsResolverManager.initialize(this); // Setup permission resolver
 
         // Register CUI
         fail(() -> {
@@ -178,9 +203,6 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         // platforms to be worried about... at the current time of writing
         WorldEdit.getInstance().getEventBus().post(new PlatformReadyEvent());
 
-        // Setup the BukkitImplementationTester.
-        BukkitImplementationTester.getImplementation();
-
         { // Register 1.13 Material ids with LegacyMapper
             LegacyMapper legacyMapper = LegacyMapper.getInstance();
             for (Material m : Material.values()) {
@@ -191,6 +213,20 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         }
     }
 
+    private void setupTags() {
+        // Tags
+        try {
+            for (Tag<Material> blockTag : Bukkit.getTags(Tag.REGISTRY_BLOCKS, Material.class)) {
+                BlockCategory.REGISTRY.register(blockTag.getKey().toString(), new BlockCategory(blockTag.getKey().toString()));
+            }
+            for (Tag<Material> itemTag : Bukkit.getTags(Tag.REGISTRY_ITEMS, Material.class)) {
+                ItemCategory.REGISTRY.register(itemTag.getKey().toString(), new ItemCategory(itemTag.getKey().toString()));
+            }
+        } catch (NoSuchMethodError e) {
+            getLogger().warning("The version of Spigot/Paper you are using doesn't support Tags. The usage of tags with WorldEdit will not work until you update.");
+        }
+    }
+
     private void rename() {
 //        {
 //            PluginDescriptionFile desc = getDescription();
@@ -221,7 +257,7 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
             }
         }
         {
-            Logger logger = getLogger();
+            java.util.logging.Logger logger = getLogger();
             if (logger != null) {
                 try {
                     Field nameField = Logger.class.getDeclaredField("name");
@@ -245,7 +281,7 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
                     e.printStackTrace();
                 }
             }
-            log.log(Level.INFO, "Please restart the server if you have any plugins which depend on FAWE.");
+            log.info("Please restart the server if you have any plugins which depend on FAWE.");
         }
     }
 
@@ -253,7 +289,7 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         try {
             run.run();
         } catch (Throwable e) {
-            log.log(Level.SEVERE, message);
+            log.error(message);
             e.printStackTrace();
         }
     }
@@ -264,7 +300,7 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
             config = new BukkitConfiguration(new YAMLProcessor(new File(getDataFolder(), "config-legacy.yml"), true), this);
             config.load();
         } catch (Throwable e) {
-            log.log(Level.SEVERE, "Failed to load config.yml");
+            log.error("Failed to load config.yml");
             e.printStackTrace();
         }
         // Create schematics folder
@@ -287,30 +323,30 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         try {
             adapterLoader.addFromPath(getClass().getClassLoader());
         } catch (IOException e) {
-            log.log(Level.WARNING, "Failed to search path for Bukkit adapters");
+            log.warn("Failed to search path for Bukkit adapters");
         }
 
         try {
             adapterLoader.addFromJar(getFile());
         } catch (IOException e) {
-            log.log(Level.WARNING, "Failed to search " + getFile() + " for Bukkit adapters", e);
+            log.warn("Failed to search " + getFile() + " for Bukkit adapters", e);
         }
         try {
             bukkitAdapter = adapterLoader.loadAdapter();
-            log.log(Level.INFO, "Using " + bukkitAdapter.getClass().getCanonicalName() + " as the Bukkit adapter");
+            log.info("Using " + bukkitAdapter.getClass().getCanonicalName() + " as the Bukkit adapter");
         } catch (AdapterLoadException e) {
             try {
                 Platform platform = worldEdit.getPlatformManager().queryCapability(Capability.WORLD_EDITING);
                 if (platform instanceof BukkitServerInterface) {
-                    log.log(Level.WARNING, e.getMessage());
+                    log.warn(e.getMessage());
                     return;
                 } else {
-                    log.log(Level.INFO, "WorldEdit could not find a Bukkit adapter for this MC version, " +
+                    log.info("WorldEdit could not find a Bukkit adapter for this MC version, " +
                             "but it seems that you have another implementation of WorldEdit installed (" + platform.getPlatformName() + ") " +
                             "that handles the world editing.");
                 }
             } catch (NoCapablePlatformException ignore) {}
-            log.log(Level.INFO, "WorldEdit could not find a Bukkit adapter for this MC version");
+            log.info("WorldEdit could not find a Bukkit adapter for this MC version");
         }
     }
 
@@ -425,7 +461,7 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
 
         EditSession editSession = WorldEdit.getInstance().getEditSessionFactory()
                 .getEditSession(wePlayer.getWorld(), session.getBlockChangeLimit(), blockBag, wePlayer);
-        editSession.enableQueue();
+        editSession.enableStandardMode();
 
         return editSession;
     }
@@ -441,7 +477,7 @@ public class WorldEditPlugin extends JavaPlugin //implements TabCompleter
         LocalSession session = WorldEdit.getInstance().getSessionManager().get(wePlayer);
 
         session.remember(editSession);
-        editSession.flushQueue();
+        editSession.flushSession();
 
         WorldEdit.getInstance().flushBlockBag(wePlayer, editSession);
     }

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

@@ -19,20 +19,18 @@
 
 package com.sk89q.worldedit.bukkit.adapter;
 
-import com.sk89q.jnbt.Tag;
-import com.sk89q.worldedit.world.block.BaseBlock;
-import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.registry.state.Property;
+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.registry.BlockMaterial;
 
 import org.bukkit.Chunk;
 import org.bukkit.Location;
-import org.bukkit.block.Biome;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 
@@ -45,26 +43,6 @@ import javax.annotation.Nullable;
  */
 public interface BukkitImplAdapter<T> extends IBukkitAdapter {
 
-    /**
-     * Get the biome ID for the given biome.
-     *
-     * <p>Returns 0 if it is not known or it doesn't exist.</p>
-     *
-     * @param biome biome
-     * @return the biome ID
-     */
-    int getBiomeId(Biome biome);
-
-    /**
-     * Get the biome ID for the given biome ID..
-     *
-     * <p>Returns {@link Biome#OCEAN} if it is not known or it doesn't exist.</p>
-     *
-     * @param id the biome ID
-     * @return the biome
-     */
-    Biome getBiome(int id);
-
     /**
      * Get the block at the given location.
      *

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

@@ -20,6 +20,8 @@
 package com.sk89q.worldedit.bukkit.adapter;
 
 import com.sk89q.worldedit.util.io.Closer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -29,15 +31,13 @@ import java.util.Enumeration;
 import java.util.List;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 /**
  * Loads Bukkit implementation adapters.
  */
 public class BukkitImplLoader {
 
-    private static final Logger log = Logger.getLogger(BukkitImplLoader.class.getCanonicalName());
+    private static final Logger log = LoggerFactory.getLogger(BukkitImplLoader.class);
     private final List<String> adapterCandidates = new ArrayList<>();
     private String customCandidate;
 
@@ -73,7 +73,7 @@ public class BukkitImplLoader {
         if (className != null) {
             customCandidate = className;
             adapterCandidates.add(className);
-            log.log(Level.INFO, "-Dworldedit.bukkit.adapter used to add " + className + " to the list of available Bukkit adapters");
+            log.info("-Dworldedit.bukkit.adapter used to add " + className + " to the list of available Bukkit adapters");
         }
     }
 
@@ -93,7 +93,7 @@ public class BukkitImplLoader {
         try {
             Enumeration<JarEntry> entries = jar.entries();
             while (entries.hasMoreElements()) {
-                JarEntry jarEntry = (JarEntry) entries.nextElement();
+                JarEntry jarEntry = entries.nextElement();
 
                 String className = jarEntry.getName().replaceAll("[/\\\\]+", ".");
 
@@ -157,22 +157,23 @@ public class BukkitImplLoader {
         for (String className : adapterCandidates) {
             try {
                 Class<?> cls = Class.forName(className);
+                if (cls.isSynthetic()) continue;
                 if (BukkitImplAdapter.class.isAssignableFrom(cls)) {
                     return (BukkitImplAdapter) cls.newInstance();
                 } else {
-                    log.log(Level.WARNING, "Failed to load the Bukkit adapter class '" + className +
+                    log.warn("Failed to load the Bukkit adapter class '" + className +
                             "' because it does not implement " + BukkitImplAdapter.class.getCanonicalName());
                 }
             } catch (ClassNotFoundException e) {
-                log.log(Level.WARNING, "Failed to load the Bukkit adapter class '" + className +
+                log.warn("Failed to load the Bukkit adapter class '" + className +
                         "' that is not supposed to be missing", e);
             } catch (IllegalAccessException e) {
-                log.log(Level.WARNING, "Failed to load the Bukkit adapter class '" + className +
+                log.warn("Failed to load the Bukkit adapter class '" + className +
                         "' that is not supposed to be raising this error", e);
             } catch (Throwable e) {
                 e.printStackTrace();
                 if (className.equals(customCandidate)) {
-                    log.log(Level.WARNING, "Failed to load the Bukkit adapter class '" + className + "'", e);
+                    log.warn("Failed to load the Bukkit adapter class '" + className + "'", e);
                 }
             }
         }

worldedit-bukkit/src/main/resources/defaults/config-legacy.yml

@@ -17,7 +17,6 @@
 #
 
 limits:
-    allow-extra-data-values: false
     max-blocks-changed:
         default: -1
         maximum: -1
@@ -77,9 +76,16 @@ history:
     size: 15
     expiration: 10
 
+calculation:
+    timeout: 100
+
+debugging:
+    trace-unflushed-sessions: false
+
 wand-item: minecraft:wooden_axe
 shell-save-type:
 no-double-slash: false
 no-op-permissions: false
 debug: false
 show-help-on-first-use: true
+server-side-cui: true

worldedit-core/build.gradle

@@ -13,6 +13,8 @@ dependencies {
     compile 'com.google.code.gson:gson:2.8.0'
     compile 'com.sk89q.lib:jlibnoise:1.0.0'
     compile 'com.googlecode.json-simple:json-simple:1.1.1'
+    compile 'org.slf4j:slf4j-api:1.7.26'
+    //compile 'net.sf.trove4j:trove4j:3.0.3'
     testCompile 'org.mockito:mockito-core:1.9.0-rc1'
 
     // Fawe depends

worldedit-core/src/main/java/com/sk89q/minecraft/util/commands/CommandsManager.java

@@ -20,6 +20,8 @@
 package com.sk89q.minecraft.util.commands;
 
 import com.sk89q.util.StringUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -30,8 +32,6 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 /**
  * Manager for handling commands. This allows you to easily process commands,
@@ -63,7 +63,7 @@ import java.util.logging.Logger;
 public abstract class CommandsManager<T> {
 
     protected static final Logger logger =
-            Logger.getLogger(CommandsManager.class.getCanonicalName());
+            LoggerFactory.getLogger(CommandsManager.class);
 
     /**
      * Mapping of commands (including aliases) with a description. Root
@@ -142,7 +142,7 @@ public abstract class CommandsManager<T> {
                 return registerMethods(cls, parent, obj);
             }
         } catch (InvocationTargetException | InstantiationException | IllegalAccessException e) {
-            logger.log(Level.SEVERE, "Failed to register commands", e);
+            logger.error("Failed to register commands", e);
         }
         return null;
     }
@@ -523,7 +523,7 @@ public abstract class CommandsManager<T> {
         try {
             method.invoke(instance, methodArgs);
         } catch (IllegalArgumentException | IllegalAccessException e) {
-            logger.log(Level.SEVERE, "Failed to execute command", e);
+            logger.error("Failed to execute command", e);
         } catch (InvocationTargetException e) {
             if (e.getCause() instanceof CommandException) {
                 throw (CommandException) e.getCause();

worldedit-core/src/main/java/com/sk89q/minecraft/util/commands/SimpleInjector.java

@@ -19,14 +19,15 @@
 
 package com.sk89q.minecraft.util.commands;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 public class SimpleInjector implements Injector {
 
-    private static final Logger log = Logger.getLogger(SimpleInjector.class.getCanonicalName());
+    private static final Logger log = LoggerFactory.getLogger(SimpleInjector.class);
     private Object[] args;
     private Class<?>[] argClasses;
 
@@ -45,7 +46,7 @@ public class SimpleInjector implements Injector {
             ctr.setAccessible(true);
             return ctr.newInstance(args);
         } catch (NoSuchMethodException | IllegalAccessException | InstantiationException | InvocationTargetException e) {
-            log.log(Level.SEVERE, "Error initializing commands class " + clazz, e);
+            log.error("Error initializing commands class " + clazz, e);
             return null;
         }
     }

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

@@ -28,18 +28,45 @@ import com.boydti.fawe.jnbt.anvil.MCAQueue;
 import com.boydti.fawe.jnbt.anvil.MCAWorld;
 import com.boydti.fawe.logging.LoggingChangeSet;
 import com.boydti.fawe.logging.rollback.RollbackOptimizedHistory;
-import com.boydti.fawe.object.*;
+import com.boydti.fawe.object.FaweLimit;
+import com.boydti.fawe.object.FawePlayer;
+import com.boydti.fawe.object.FaweQueue;
+import com.boydti.fawe.object.HasFaweQueue;
+import com.boydti.fawe.object.HistoryExtent;
+import com.boydti.fawe.object.NullChangeSet;
+import com.boydti.fawe.object.RegionWrapper;
+import com.boydti.fawe.object.RunnableVal;
 import com.boydti.fawe.object.brush.visualization.VirtualWorld;
-import com.boydti.fawe.object.changeset.*;
+import com.boydti.fawe.object.changeset.BlockBagChangeSet;
+import com.boydti.fawe.object.changeset.CPUOptimizedChangeSet;
+import com.boydti.fawe.object.changeset.DiskStorageHistory;
+import com.boydti.fawe.object.changeset.FaweChangeSet;
+import com.boydti.fawe.object.changeset.MemoryOptimizedHistory;
+import com.boydti.fawe.object.collection.BlockVectorSet;
 import com.boydti.fawe.object.collection.LocalBlockVectorSet;
 import com.boydti.fawe.object.exception.FaweException;
-import com.boydti.fawe.object.extent.*;
+import com.boydti.fawe.object.extent.FastWorldEditExtent;
+import com.boydti.fawe.object.extent.FaweRegionExtent;
+import com.boydti.fawe.object.extent.HeightBoundExtent;
+import com.boydti.fawe.object.extent.MultiRegionExtent;
+import com.boydti.fawe.object.extent.NullExtent;
+import com.boydti.fawe.object.extent.ResettableExtent;
+import com.boydti.fawe.object.extent.SingleRegionExtent;
+import com.boydti.fawe.object.extent.SlowExtent;
+import com.boydti.fawe.object.extent.SourceMaskExtent;
+import com.boydti.fawe.object.extent.StripNBTExtent;
 import com.boydti.fawe.object.function.SurfaceRegionFunction;
 import com.boydti.fawe.object.mask.ResettableMask;
 import com.boydti.fawe.object.pattern.ExistingPattern;
 import com.boydti.fawe.object.progress.ChatProgressTracker;
 import com.boydti.fawe.object.progress.DefaultProgressTracker;
-import com.boydti.fawe.util.*;
+import com.boydti.fawe.util.ExtentTraverser;
+import com.boydti.fawe.util.MaskTraverser;
+import com.boydti.fawe.util.MathMan;
+import com.boydti.fawe.util.MemUtil;
+import com.boydti.fawe.util.Perm;
+import com.boydti.fawe.util.SetQueue;
+import com.boydti.fawe.util.TaskManager;
 import com.boydti.fawe.wrappers.WorldWrapper;
 import com.google.common.base.Supplier;
 import com.sk89q.jnbt.CompoundTag;
@@ -51,37 +78,79 @@ import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.ChangeSetExtent;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.extent.MaskingExtent;
+import com.sk89q.worldedit.extent.cache.LastAccessExtentCache;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.extent.inventory.BlockBagExtent;
+import com.sk89q.worldedit.extent.reorder.ChunkBatchingExtent;
+import com.sk89q.worldedit.extent.reorder.MultiStageReorder;
+import com.sk89q.worldedit.extent.validation.BlockChangeLimiter;
+import com.sk89q.worldedit.extent.validation.DataValidatorExtent;
+import com.sk89q.worldedit.extent.world.BlockQuirkExtent;
+import com.sk89q.worldedit.extent.world.ChunkLoadingExtent;
+import com.sk89q.worldedit.extent.world.FastModeExtent;
 import com.sk89q.worldedit.extent.world.SurvivalModeExtent;
 import com.sk89q.worldedit.function.GroundFunction;
 import com.sk89q.worldedit.function.RegionFunction;
 import com.sk89q.worldedit.function.RegionMaskingFilter;
+import com.sk89q.worldedit.function.block.BlockDistributionCounter;
 import com.sk89q.worldedit.function.block.BlockReplace;
 import com.sk89q.worldedit.function.block.Naturalizer;
+import com.sk89q.worldedit.function.generator.ForestGenerator;
 import com.sk89q.worldedit.function.generator.GardenPatchGenerator;
-import com.sk89q.worldedit.function.mask.*;
+import com.sk89q.worldedit.function.mask.BlockMask;
+import com.sk89q.worldedit.function.mask.BlockMaskBuilder;
+import com.sk89q.worldedit.function.mask.BlockStateMask;
+import com.sk89q.worldedit.function.mask.BlockTypeMask;
+import com.sk89q.worldedit.function.mask.BoundedHeightMask;
+import com.sk89q.worldedit.function.mask.ExistingBlockMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.MaskIntersection;
+import com.sk89q.worldedit.function.mask.MaskUnion;
+import com.sk89q.worldedit.function.mask.Masks;
+import com.sk89q.worldedit.function.mask.NoiseFilter2D;
+import com.sk89q.worldedit.function.mask.RegionMask;
 import com.sk89q.worldedit.function.operation.ChangeSetExecutor;
 import com.sk89q.worldedit.function.operation.ForwardExtentCopy;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.operation.Operations;
 import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.function.pattern.WaterloggedRemover;
 import com.sk89q.worldedit.function.util.RegionOffset;
-import com.sk89q.worldedit.function.visitor.*;
+import com.sk89q.worldedit.function.visitor.DirectionalVisitor;
+import com.sk89q.worldedit.function.visitor.DownwardVisitor;
+import com.sk89q.worldedit.function.visitor.FlatRegionVisitor;
+import com.sk89q.worldedit.function.visitor.LayerVisitor;
+import com.sk89q.worldedit.function.visitor.NonRisingVisitor;
+import com.sk89q.worldedit.function.visitor.RecursiveVisitor;
+import com.sk89q.worldedit.function.visitor.RegionVisitor;
 import com.sk89q.worldedit.history.UndoContext;
 import com.sk89q.worldedit.history.change.BlockChange;
+import com.sk89q.worldedit.history.changeset.BlockOptimizedHistory;
 import com.sk89q.worldedit.history.changeset.ChangeSet;
 import com.sk89q.worldedit.internal.expression.Expression;
 import com.sk89q.worldedit.internal.expression.ExpressionException;
 import com.sk89q.worldedit.internal.expression.runtime.EvaluationException;
 import com.sk89q.worldedit.internal.expression.runtime.RValue;
-import com.sk89q.worldedit.math.*;
+import com.sk89q.worldedit.internal.expression.runtime.ExpressionTimeoutException;
+import com.sk89q.worldedit.internal.expression.runtime.RValue;
+import com.sk89q.worldedit.math.BlockVector2;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.math.MathUtils;
+import com.sk89q.worldedit.math.MutableBlockVector2;
+import com.sk89q.worldedit.math.MutableBlockVector3;
+import com.sk89q.worldedit.math.Vector2;
+import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.math.interpolation.Interpolation;
 import com.sk89q.worldedit.math.interpolation.KochanekBartelsInterpolation;
 import com.sk89q.worldedit.math.interpolation.Node;
 import com.sk89q.worldedit.math.noise.RandomNoise;
 import com.sk89q.worldedit.math.transform.AffineTransform;
-import com.sk89q.worldedit.regions.*;
+import com.sk89q.worldedit.regions.CuboidRegion;
+import com.sk89q.worldedit.regions.EllipsoidRegion;
+import com.sk89q.worldedit.regions.FlatRegion;
+import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.regions.Regions;
 import com.sk89q.worldedit.regions.shape.ArbitraryBiomeShape;
 import com.sk89q.worldedit.regions.shape.ArbitraryShape;
 import com.sk89q.worldedit.regions.shape.RegionShape;
@@ -89,12 +158,18 @@ import com.sk89q.worldedit.regions.shape.WorldEditExpressionEnvironment;
 import com.sk89q.worldedit.util.Countable;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.util.TreeGenerator;
+import com.sk89q.worldedit.util.collection.DoubleArrayList;
 import com.sk89q.worldedit.util.eventbus.EventBus;
+import com.sk89q.worldedit.world.NullWorld;
 import com.sk89q.worldedit.world.SimpleWorld;
 import com.sk89q.worldedit.world.World;
-import com.sk89q.worldedit.world.biome.BaseBiome;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.*;
+import com.sk89q.worldedit.world.registry.LegacyMapper;
 import com.sk89q.worldedit.world.weather.WeatherType;
+import javafx.stage.Stage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
@@ -103,7 +178,9 @@ import java.util.concurrent.ThreadLocalRandom;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
-import static com.sk89q.worldedit.regions.Regions.*;
+import static com.sk89q.worldedit.regions.Regions.asFlatRegion;
+import static com.sk89q.worldedit.regions.Regions.maximumBlockY;
+import static com.sk89q.worldedit.regions.Regions.minimumBlockY;
 
 /**
  * An {@link Extent} that handles history, {@link BlockBag}s, change limits,
@@ -114,13 +191,8 @@ import static com.sk89q.worldedit.regions.Regions.*;
  * using the {@link ChangeSetExtent}.</p>
  */
 public class EditSession extends AbstractDelegateExtent implements HasFaweQueue, SimpleWorld, AutoCloseable {
-    /**
+
-     * Used by {@link EditSession#setBlock(BlockVector3, BlockStateHolder, Stage)} to
+    private static final Logger log = LoggerFactory.getLogger(EditSession.class);
-     * determine which {@link Extent}s should be bypassed.
-     */
-    public enum Stage {
-        BEFORE_HISTORY, BEFORE_REORDER, BEFORE_CHANGE
-    }
 
     private World world;
     private String worldName;
@@ -144,9 +216,14 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     private final int maxY;
 
     public static final UUID CONSOLE = UUID.fromString("1-1-3-3-7");
-    public static final BaseBiome nullBiome = new BaseBiome(0);
     public static final BlockState nullBlock = BlockTypes.AIR.getDefaultState();
 
+    public enum Stage {
+        BEFORE_HISTORY,
+        BEFORE_REORDER,
+        BEFORE_CHANGE
+    }
+
     @Deprecated
     public EditSession(@Nonnull World world, @Nullable FaweQueue queue, @Nullable FawePlayer player, @Nullable FaweLimit limit, @Nullable FaweChangeSet changeSet, @Nullable RegionWrapper[] allowedRegions, @Nullable Boolean autoQueue, @Nullable Boolean fastmode, @Nullable Boolean checkMemory, @Nullable Boolean combineStages, @Nullable BlockBag blockBag, @Nullable EventBus bus, @Nullable EditSessionEvent event) {
         this(null, world, queue, player, limit, changeSet, allowedRegions, autoQueue, fastmode, checkMemory, combineStages, blockBag, bus, event);
@@ -340,6 +417,8 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         this(WorldEdit.getInstance().getEventBus(), world, maxBlocks, blockBag, new EditSessionEvent(world, null, maxBlocks, null));
     }
 
+    private ReorderMode reorderMode = ReorderMode.MULTI_STAGE;
+
     private Mask oldMask;
 
     /**
@@ -370,6 +449,8 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         if (find != null && find.get() != null) {
             find.get().setLimit(this.limit);
         }
+
+        setReorderMode(this.reorderMode);
     }
 
     /**
@@ -400,7 +481,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     }
 
     /**
-     * The region extent restricts block placements to allowed regions
+     * The region extent restricts block placements to allowmaxYed regions
      *
      * @return FaweRegionExtent (may be null)
      */
@@ -536,6 +617,29 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         return extent;
     }
 
+    // pkg private for TracedEditSession only, may later become public API
+    boolean commitRequired() {
+        if (reorderExtent != null && reorderExtent.commitRequired()) {
+            return true;
+        }
+        if (chunkBatchingExtent != null && chunkBatchingExtent.commitRequired()) {
+            return true;
+        }
+        if (fastModeExtent != null && fastModeExtent.commitRequired()) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Turns on specific features for a normal WorldEdit session, such as
+     * {@link #setBatchingChunks(boolean)
+     * chunk batching}.
+     */
+    public void enableStandardMode() {
+        setBatchingChunks(true);
+    }
+
     /**
      * Get the world.
      *
@@ -610,6 +714,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * Returns queue status.
      *
      * @return whether the queue is enabled
+     * @deprecated Use {@link EditSession#getReorderMode()} with MULTI_STAGE instead.
      */
     @Deprecated
     public boolean isQueueEnabled() {
@@ -618,6 +723,9 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
 
     /**
      * Queue certain types of block for better reproduction of those blocks.
+     *
+     * Uses {@link ReorderMode#MULTI_STAGE}
+     * @deprecated Use {@link EditSession#setReorderMode(ReorderMode)} with MULTI_STAGE instead.
      */
     @Deprecated
     public void enableQueue() {
@@ -880,6 +988,27 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         return new HashMap<>();
     }
 
+    /**
+     * Returns chunk batching status.
+     *
+     * @return whether chunk batching is enabled
+     */
+    public boolean isBatchingChunks() {
+        return false;
+    }
+
+    /**
+     * Enable or disable chunk batching. Disabling will
+     * {@linkplain #flushSession() flush the session}.
+     *
+     * @param batchingChunks {@code true} to enable, {@code false} to disable
+     */
+    public void setBatchingChunks(boolean batchingChunks) {
+    }
+
+    public void disableBuffering() {
+    }
+
     /**
      * Get the number of blocks changed, including repeated block changes.
      * <p>
@@ -892,18 +1021,18 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     }
 
     @Override
-    public BaseBiome getBiome(final BlockVector2 position) {
+    public BiomeType getBiome(final BlockVector2 position) {
         return this.extent.getBiome(position);
     }
 
     @Override
-    public boolean setBiome(final BlockVector2 position, final BaseBiome biome) {
+    public boolean setBiome(final BlockVector2 position, final BiomeType biome) {
         this.changes++;
         return this.extent.setBiome(position, biome);
     }
 
     @Override
-    public boolean setBiome(int x, int y, int z, BaseBiome biome) {
+    public boolean setBiome(int x, int y, int z, BiomeType biome) {
         this.changes++;
         return this.extent.setBiome(x, y, z, biome);
     }
@@ -968,8 +1097,24 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         return getBlockType(position.getBlockX(), position.getBlockY(), position.getBlockZ());
     }
 
+    /**
+     * Returns the highest solid 'terrain' block.
+     *
+     * @param x the X coordinate
+     * @param z the Z coordinate
+     * @param minY minimal height
+     * @param maxY maximal height
+     * @param filter a mask of blocks to consider, or null to consider any solid (movement-blocking) block
+     * @return height of highest block found or 'minY'
+     */
     public int getHighestTerrainBlock(int x, int z, int minY, int maxY) {
-        return getHighestTerrainBlock(x, z, minY, maxY, null);
+        for (int y = maxY; y >= minY; --y) {
+            BlockVector3 pt = BlockVector3.at(x, y, z);
+            if (getBlock(pt).getBlockType().getMaterial().isMovementBlocker()) {
+                return y;
+            }
+        }
+        return minY;
     }
 
     /**
@@ -985,9 +1130,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     public int getHighestTerrainBlock(int x, int z, int minY, int maxY, Mask filter) {
         for (int y = maxY; y >= minY; --y) {
             BlockVector3 pt = BlockVector3.at(x, y, z);
-            if (filter == null
+            if (filter.test(pt)) {
-                    ? getBlock(pt).getBlockType().getMaterial().isMovementBlocker()
-                    : filter.test(pt)) {
                 return y;
             }
         }
@@ -1033,6 +1176,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * @return whether the block changed
      */
     public <B extends BlockStateHolder<B>> boolean rawSetBlock(BlockVector3 position, B block) {
+        this.changes++;
         try {
             return this.bypassAll.setBlock(position, block);
         } catch (WorldEditException e) {
@@ -1048,6 +1192,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * @return whether the block changed
      */
     public <B extends BlockStateHolder<B>> boolean smartSetBlock(BlockVector3 position, B block) {
+        this.changes++;
         try {
             return setBlock(position, block, Stage.BEFORE_REORDER);
         } catch (WorldEditException e) {
@@ -1450,8 +1595,8 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * @return number of blocks affected
      * @throws MaxChangedBlocksException thrown if too many blocks are changed
      */
-    public int fillXZ(final BlockVector3 origin, BaseBlock block, double radius, int depth, boolean recursive) throws MaxChangedBlocksException {
+    public <B extends BlockStateHolder<B>> int fillXZ(BlockVector3 origin, B block, double radius, int depth, boolean recursive) throws MaxChangedBlocksException {
-        return fillXZ(origin, (Pattern) block, radius, depth, recursive);
+        return fillXZ(origin, new BlockPattern(block), radius, depth, recursive);
     }
     /**
      * Fills an area recursively in the X/Z directions.
@@ -1471,12 +1616,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         checkArgument(depth >= 1, "depth >= 1");
         final MaskIntersection mask = new MaskIntersection(new RegionMask(new EllipsoidRegion(null, origin, Vector3.at(radius, radius, radius))), new BoundedHeightMask(Math.max(
                 (origin.getBlockY() - depth) + 1, getMinimumPoint().getBlockY()), Math.min(getMaximumPoint().getBlockY(), origin.getBlockY())), Masks.negate(new ExistingBlockMask(EditSession.this)));
-//        MaskIntersection mask = new MaskIntersection(
-//                new RegionMask(new EllipsoidRegion(null, origin, Vector3.at(radius, radius, radius))),
-//                new BoundedHeightMask(
-//                        Math.max(origin.getBlockY() - depth + 1, 0),
-//                        Math.min(getWorld().getMaxY(), origin.getBlockY())),
-//                Masks.negate(new ExistingBlockMask(this)));
 
         // Want to replace blocks
         BlockReplace replace = new BlockReplace(this, pattern);
@@ -1588,6 +1727,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     public boolean hasExtraExtents() {
         return wrapped || getMask() != null || getSourceMask() != null || history != null;
     }
+
     public int removeNear(BlockVector3 position, BlockType blockType, int apothem) throws MaxChangedBlocksException {
         checkNotNull(position);
         checkArgument(apothem >= 1, "apothem >= 1");
@@ -1670,7 +1810,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * @return number of blocks affected
      * @throws MaxChangedBlocksException thrown if too many blocks are changed
      */
-    public <B extends BlockStateHolder<B>> int replaceBlocks(Region region, Set<BlockStateHolder> filter, B replacement) throws MaxChangedBlocksException {
+    public <B extends BlockStateHolder<B>> int replaceBlocks(Region region, Set<BaseBlock> filter, B replacement) throws MaxChangedBlocksException {
         return replaceBlocks(region, filter, new BlockPattern(replacement));
     }
 
@@ -1684,8 +1824,8 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * @return number of blocks affected
      * @throws MaxChangedBlocksException thrown if too many blocks are changed
      */
-    public int replaceBlocks(Region region, Set<BlockStateHolder> filter, Pattern pattern) throws MaxChangedBlocksException {
+    public int replaceBlocks(Region region, Set<BaseBlock> filter, Pattern pattern) throws MaxChangedBlocksException {
-        Mask mask = filter == null ? new ExistingBlockMask(this) : new BlockMaskBuilder().addBlocks(filter).build(this);
+        Mask mask = filter == null ? new ExistingBlockMask(this) : new BlockMask(this, filter);
         return replaceBlocks(region, mask, pattern);
     }
 
@@ -1887,12 +2027,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         FlatRegionVisitor visitor = new FlatRegionVisitor(asFlatRegion(region), surface, this);
         Operations.completeBlindly(visitor);
         return this.changes = visitor.getAffected();
-//        BlockReplace replace = new BlockReplace(this, pattern);
-//        RegionOffset offset = new RegionOffset(BlockVector3.at(0, 1, 0), replace);
-//        GroundFunction ground = new GroundFunction(new ExistingBlockMask(this), offset);
-//        LayerVisitor visitor = new LayerVisitor(asFlatRegion(region), minimumBlockY(region), maximumBlockY(region), ground);
-//        Operations.completeLegacy(visitor);
-//        return ground.getAffected();
     }
 
     /**
@@ -2031,6 +2165,10 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
      * @throws MaxChangedBlocksException thrown if too many blocks are changed
      */
     public int drainArea(final BlockVector3 origin, final double radius) {
+        return drainArea(origin, radius, false);
+    }
+
+    public int drainArea(final BlockVector3 origin, final double radius, boolean waterLogged) {
         checkNotNull(origin);
         checkArgument(radius >= 0, "radius >= 0 required");
         Mask liquidMask;
@@ -2053,20 +2191,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
 
         // Around the origin in a 3x3 block
         for (final BlockVector3 position : CuboidRegion.fromCenter(origin, 1)) {
-//    public int drainArea(BlockVector3 origin, double radius) throws MaxChangedBlocksException {
-//        checkNotNull(origin);
-//        checkArgument(radius >= 0, "radius >= 0 required");
-//
-//        MaskIntersection mask = new MaskIntersection(
-//                new BoundedHeightMask(0, getWorld().getMaxY()),
-//                new RegionMask(new EllipsoidRegion(null, origin, Vector3.at(radius, radius, radius))),
-//                getWorld().createLiquidMask());
-//
-//        BlockReplace replace = new BlockReplace(this, new BlockPattern(BlockTypes.AIR.getDefaultState()));
-//        RecursiveVisitor visitor = new RecursiveVisitor(mask, replace);
-//
-//        // Around the origin in a 3x3 block
-//        for (BlockVector3 position : CuboidRegion.fromCenter(origin, 1)) {
             if (mask.test(position)) {
                 visitor.visit(position);
             }
@@ -2349,7 +2473,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     * @return number of blocks changed
     * @throws MaxChangedBlocksException thrown if too many blocks are changed
     */
-    public int makeSphere(final BlockVector3 pos, final Pattern block, final double radius, final boolean filled) {
+    public int makeSphere(BlockVector3 pos, Pattern block, double radius, boolean filled) {
         return makeSphere(pos, block, radius, radius, radius, filled);
     }
 
@@ -2596,6 +2720,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     public int green(final BlockVector3 position, final double radius) {
     	return this.green(position, radius, false);
     }
+
     public int green(BlockVector3 position, double radius, boolean onlyNormalDirt)
             throws MaxChangedBlocksException {
         int affected = 0;
@@ -2619,6 +2744,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                 for (int y = maxY; y >= 1; --y) {
                     BlockType block = getBlockType(x, y, z);
                     switch (block.getResource().toUpperCase()) {
+                        // TODO onlyNormalDirt
                         case "DIRT":
                             this.setBlock(x, y, z, BlockTypes.GRASS_BLOCK.getDefaultState());
                             break loop;
@@ -2629,26 +2755,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                             if (block.getMaterial().isMovementBlocker()) {
                                 break loop;
                             }
-//        for (int x = ox - ceilRadius; x <= ox + ceilRadius; ++x) {
-//            for (int z = oz - ceilRadius; z <= oz + ceilRadius; ++z) {
-//                if ((BlockVector3.at(x, oy, z)).distanceSq(position) > radiusSq) {
-//                    continue;
-//                }
-//
-//                for (int y = world.getMaxY(); y >= 1; --y) {
-//                    final BlockVector3 pt = BlockVector3.at(x, y, z);
-//                    final BlockState block = getBlock(pt);
-//
-//                    if (block.getBlockType() == BlockTypes.DIRT ||
-//                            (!onlyNormalDirt && block.getBlockType() == BlockTypes.COARSE_DIRT)) {
-//                        if (setBlock(pt, grass)) {
-//                            ++affected;
-//                        }
-//                        break;
-//                    } else if (block.getBlockType() == BlockTypes.WATER || block.getBlockType() == BlockTypes.LAVA) {
-//                        break;
-//                    } else if (block.getBlockType().getMaterial().isMovementBlocker()) {
-//                        break;
                     }
                 }
             }
@@ -2727,48 +2833,39 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                         } else if (type.getMaterial().isAir()) {
                             continue;
                         }
-//    public int makeForest(BlockVector3 basePosition, int size, double density, TreeGenerator.TreeType treeType) throws MaxChangedBlocksException {
-//        int affected = 0;
-//
-//        for (int x = basePosition.getBlockX() - size; x <= basePosition.getBlockX()
-//                + size; ++x) {
-//            for (int z = basePosition.getBlockZ() - size; z <= basePosition.getBlockZ()
-//                    + size; ++z) {
-//                // Don't want to be in the ground
-//                if (!getBlock(BlockVector3.at(x, basePosition.getBlockY(), z)).getBlockType().getMaterial().isAir()) {
-//                    continue;
-//                }
-//                // The gods don't want a tree here
-//                if (Math.random() >= density) {
-//                    continue;
-//                } // def 0.05
-//
-//                for (int y = basePosition.getBlockY(); y >= basePosition.getBlockY() - 10; --y) {
-//                    // Check if we hit the ground
-//                    BlockType t = getBlock(BlockVector3.at(x, y, z)).getBlockType();
-//                    if (t == BlockTypes.GRASS_BLOCK || t == BlockTypes.DIRT) {
-//                        treeType.generate(this, BlockVector3.at(x, y + 1, z));
-//                        ++affected;
-//                        break;
-//                    } else if (t == BlockTypes.SNOW) {
-//                        setBlock(BlockVector3.at(x, y, z), BlockTypes.AIR.getDefaultState());
-//                    } else if (!t.getMaterial().isAir()) { // Trees won't grow on this!
-//                        break;
                     }
                 }
             }
-        } catch (MaxChangedBlocksException ignore) {
+        } catch (MaxChangedBlocksException ignore) {}
-        }
         return this.changes;
     }
 
+    /**
+     * Makes a forest.
+     *
+     * @param region the region to generate trees in
+     * @param density between 0 and 1, inclusive
+     * @param treeType the tree type
+     * @return number of trees created
+     * @throws MaxChangedBlocksException thrown if too many blocks are changed
+     */
+    public int makeForest(Region region, double density, TreeGenerator.TreeType treeType) throws MaxChangedBlocksException {
+        ForestGenerator generator = new ForestGenerator(this, treeType);
+        GroundFunction ground = new GroundFunction(new ExistingBlockMask(this), generator);
+        LayerVisitor visitor = new LayerVisitor(asFlatRegion(region), minimumBlockY(region), maximumBlockY(region), ground);
+        visitor.setMask(new NoiseFilter2D(new RandomNoise(), density));
+        Operations.completeLegacy(visitor);
+        return ground.getAffected();
+    }
+
     /**
      * Get the block distribution inside a region.
      *
      * @param region a region
      * @return the results
      */
-    public List<Countable<BlockType>> getBlockDistribution(final Region region) {
+    public List<Countable<BlockState>> getBlockDistribution(Region region, boolean separateStates) {
+        if (separateStates) return getBlockDistributionWithData(region);
         int[] counter = new int[BlockTypes.size()];
 
         if (region instanceof CuboidRegion) {
@@ -2810,10 +2907,17 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
     }
 
     /**
-     * Get the block distribution (with data values) inside a region.
+     * Generate a shape for the given expression.
      *
-     * @param region a region
+     * @param region the region to generate the shape in
-     * @return the results
+     * @param zero the coordinate origin for x/y/z variables
+     * @param unit the scale of the x/y/z/ variables
+     * @param pattern the default material to make the shape from
+     * @param expressionString the expression defining the shape
+     * @param hollow whether the shape should be hollow
+     * @return number of blocks changed
+     * @throws ExpressionException
+     * @throws MaxChangedBlocksException
      */
     public List<Countable<BlockStateHolder>> getBlockDistributionWithData(final Region region) {
         int[][] counter = new int[BlockTypes.size()][];
@@ -2884,6 +2988,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         final WorldEditExpressionEnvironment environment = new WorldEditExpressionEnvironment(this, unit, zero);
         expression.setEnvironment(environment);
 
+        final int[] timedOut = {0};
         final ArbitraryShape shape = new ArbitraryShape(region) {
             @Override
             public BaseBlock getMaterial(final int x, final int y, final int z, final BaseBlock defaultMaterial) {
@@ -2907,12 +3012,13 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                 }
             }
         };
-
+        int changed = shape.generate(this, pattern, hollow);
-        try {
+        if (timedOut[0] > 0) {
-            return shape.generate(this, pattern, hollow);
+            throw new ExpressionTimeoutException(
-        } catch (WorldEditException e) {
+                    String.format("%d blocks changed. %d blocks took too long to evaluate (increase with //timeout).",
-            throw new RuntimeException(e);
+                            changed, timedOut[0]));
         }
+        return changed;
     }
 
     public int deformRegion(final Region region, final Vector3 zero, final Vector3 unit, final String expressionString) throws ExpressionException, MaxChangedBlocksException {
@@ -2926,17 +3032,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         final Vector3 zero2 = zero.add(0.5, 0.5, 0.5);
 
         RegionVisitor visitor = new RegionVisitor(region, new RegionFunction() {
-//        final DoubleArrayList<BlockVector3, BaseBlock> queue = new DoubleArrayList<>(false);
-//
-//        for (BlockVector3 position : region) {
-//            // offset, scale
-//            final Vector3 scaled = position.subtract(zero).divide(unit);
-//
-//            // transform
-//            expression.evaluate(scaled.getX(), scaled.getY(), scaled.getZ());
-//
-//            final BlockVector3 sourcePosition = environment.toWorld(x.getValue(), y.getValue(), z.getValue());
-
         private MutableBlockVector3 mutable = new MutableBlockVector3();
 
             @Override
@@ -2956,18 +3051,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                 } catch (EvaluationException e) {
                     throw new RuntimeException(e);
                 }
-//            // queue operation
-//            queue.put(position, material);
-//        }
-//
-//        int affected = 0;
-//        for (Map.Entry<BlockVector3, BaseBlock> entry : queue) {
-//            BlockVector3 position = entry.getKey();
-//            BaseBlock material = entry.getValue();
-//
-//            // set at new position
-//            if (setBlock(position, material)) {
-//                ++affected;
             }
         }, this);
         Operations.completeBlindly(visitor);
@@ -3249,9 +3332,8 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         return returnset;
     }
 
-    public void recurseHollow(final Region region, final BlockVector3 origin, final Set<BlockVector3> outside) {
+    private void recurseHollow(Region region, BlockVector3 origin, Set<BlockVector3> outside) {
-        //TODO FIXME Optimize - avoid vector creation
+        final BlockVectorSet queue = new BlockVectorSet<>();
-        final ArrayDeque<BlockVector3> queue = new ArrayDeque<>();
         queue.addLast(origin);
 
         while (!queue.isEmpty()) {
@@ -3272,10 +3354,10 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
             for (BlockVector3 recurseDirection : recurseDirections) {
                 queue.addLast(current.add(recurseDirection));
             }
-        } // while
+        }
     }
 
-    public int makeBiomeShape(final Region region, final Vector3 zero, final Vector3 unit, final BaseBiome biomeType, final String expressionString, final boolean hollow) throws ExpressionException, MaxChangedBlocksException {
+    public int makeBiomeShape(final Region region, final Vector3 zero, final Vector3 unit, final BiomeType biomeType, final String expressionString, final boolean hollow) throws ExpressionException, MaxChangedBlocksException {
         final Vector2 zero2D = zero.toVector2();
         final Vector2 unit2D = unit.toVector2();
 
@@ -3288,7 +3370,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
 
         final ArbitraryBiomeShape shape = new ArbitraryBiomeShape(region) {
             @Override
-            protected BaseBiome getBiome(final int x, final int z, final BaseBiome defaultBiomeType) {
+            protected BiomeType getBiome(final int x, final int z, final BiomeType defaultBiomeType) {
                 environment.setCurrentBlock(x, 0, z);
                 double scaledX = (x - zero2D.getX()) / unit2D.getX();
                 double scaledZ = (z - zero2D.getZ()) / unit2D.getZ();
@@ -3305,8 +3387,13 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                 }
             }
         };
-
+        int changed = shape.generate(this, biomeType, hollow);
-        return shape.generate(this, biomeType, hollow);
+        if (timedOut[0] > 0) {
+            throw new ExpressionTimeoutException(
+                    String.format("%d blocks changed. %d blocks took too long to evaluate (increase time with //timeout)",
+                            changed, timedOut[0]));
+        }
+        return changed;
     }
     private static final BlockVector3[] recurseDirections = {
             Direction.NORTH.toBlockVector(),
@@ -3374,7 +3461,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         }
     }
 
-    public boolean regenerate(final Region region, final BaseBiome biome, final Long seed) {
+    public boolean regenerate(final Region region, final BiomeType biome, final Long seed) {
         //TODO Optimize - avoid Vector2D creation (make mutable)
         final FaweQueue queue = this.getQueue();
         queue.setChangeTask(null);

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

@@ -152,21 +152,24 @@ public class EditSessionFactory {
 
         @Override
         public EditSession getEditSession(World world, int maxBlocks) {
-            return new EditSession(eventBus, world, maxBlocks, null, new EditSessionEvent(world, null, maxBlocks, null));
+            return getEditSession(world, maxBlocks, null, null);
         }
 
         @Override
         public EditSession getEditSession(World world, int maxBlocks, Player player) {
-            return new EditSession(eventBus, world, maxBlocks, null, new EditSessionEvent(world, player, maxBlocks, null));
+            return getEditSession(world, maxBlocks, null, player);
         }
 
         @Override
         public EditSession getEditSession(World world, int maxBlocks, BlockBag blockBag) {
-            return new EditSession(eventBus, world, maxBlocks, blockBag, new EditSessionEvent(world, null, maxBlocks, null));
+            return getEditSession(world, maxBlocks, blockBag, null);
         }
 
         @Override
         public EditSession getEditSession(World world, int maxBlocks, BlockBag blockBag, Player player) {
+            if (WorldEdit.getInstance().getConfiguration().traceUnflushedSessions) {
+                return new TracedEditSession(eventBus, world, maxBlocks, blockBag, new EditSessionEvent(world, player, maxBlocks, null));
+            }
             return new EditSession(eventBus, world, maxBlocks, blockBag, new EditSessionEvent(world, player, maxBlocks, null));
         }
 

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

@@ -38,6 +38,7 @@ import java.util.Set;
 public abstract class LocalConfiguration {
 
     public boolean profile = false;
+    public boolean traceUnflushedSessions = false;
     public Set<String> disallowedBlocks = new HashSet<>();
     public int defaultChangeLimit = -1;
     public int maxChangeLimit = -1;
@@ -65,6 +66,8 @@ public abstract class LocalConfiguration {
     public String navigationWand = "minecraft:compass";
     public int navigationWandMaxDistance = 50;
     public int scriptTimeout = 3000;
+    public int calculationTimeout = 100;
+    public int maxCalculationTimeout = 300;
     public Set<String> allowedDataCycleBlocks = new HashSet<>();
     public String saveDir = "schematics";
     public String scriptsDir = "craftscripts";

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

@@ -67,11 +67,16 @@ import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.item.ItemType;
 import com.sk89q.worldedit.world.item.ItemTypes;
 import com.sk89q.worldedit.world.snapshot.Snapshot;
-import java.io.*;
+
-import java.util.*;
-import java.util.concurrent.atomic.AtomicBoolean;
-import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.TimeZone;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import static com.google.common.base.Preconditions.checkNotNull;
 
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -118,6 +123,7 @@ public class LocalSession implements TextureHolder {
     private transient Tool[] tools = new Tool[ItemTypes.size()];
 
     private transient int maxBlocksChanged = -1;
+    private transient int maxTimeoutTime;
     private transient boolean useInventory;
     private transient Snapshot snapshot;
     private transient boolean hasCUISupport = false;
@@ -830,6 +836,24 @@ public class LocalSession implements TextureHolder {
         this.maxBlocksChanged = maxBlocksChanged;
     }
 
+    /**
+     * Get the maximum time allowed for certain executions to run before cancelling them, such as expressions.
+     *
+     * @return timeout time, in milliseconds
+     */
+    public int getTimeout() {
+        return maxTimeoutTime;
+    }
+
+    /**
+     * Set the maximum number of blocks that can be changed.
+     *
+     * @param timeout the time, in milliseconds, to limit certain executions to, or -1 to disable
+     */
+    public void setTimeout(int timeout) {
+        this.maxTimeoutTime = timeout;
+    }
+
     /**
      * Checks whether the super pick axe is enabled.
      *
@@ -1260,7 +1284,7 @@ public class LocalSession implements TextureHolder {
                 String msg = e.getMessage();
                 if (msg != null && msg.length() > 256) msg = msg.substring(0, 256);
                 this.failedCuiAttempts++;
-                WorldEdit.logger.warning("Error while reading CUI init message for player " + uuid + ": " + msg);
+                WorldEdit.logger.warn("Error while reading CUI init message for player " + uuid + ": " + msg);
 
             }
         }
@@ -1375,6 +1399,24 @@ public class LocalSession implements TextureHolder {
         this.fastMode = fastMode;
     }
 
+    /**
+     * Gets the reorder mode of the session.
+     *
+     * @return The reorder mode
+     */
+    public EditSession.ReorderMode getReorderMode() {
+        return reorderMode;
+    }
+
+    /**
+     * Sets the reorder mode of the session.
+     *
+     * @param reorderMode The reorder mode
+     */
+    public void setReorderMode(EditSession.ReorderMode reorderMode) {
+        this.reorderMode = reorderMode;
+    }
+
     /**
      * Get the mask.
      *

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

@@ -0,0 +1,45 @@
+/*
+ * 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;
+
+import com.sk89q.worldedit.event.extent.EditSessionEvent;
+import com.sk89q.worldedit.extent.inventory.BlockBag;
+import com.sk89q.worldedit.util.eventbus.EventBus;
+import com.sk89q.worldedit.world.World;
+
+public class TracedEditSession extends EditSession {
+
+    TracedEditSession(EventBus eventBus, World world, int maxBlocks, BlockBag blockBag, EditSessionEvent event) {
+        super(eventBus, world, maxBlocks, blockBag, event);
+    }
+
+    private final Throwable stacktrace = new Throwable("Creation trace.");
+
+    @Override
+    protected void finalize() throws Throwable {
+        super.finalize();
+
+        if (commitRequired()) {
+            WorldEdit.logger.warn("####### LEFTOVER BUFFER BLOCKS DETECTED #######");
+            WorldEdit.logger.warn("This means that some code did not flush their EditSession.");
+            WorldEdit.logger.warn("Here is a stacktrace from the creation of this EditSession:", stacktrace);
+        }
+    }
+}

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

@@ -37,15 +37,11 @@ import com.sk89q.worldedit.extension.platform.PlatformManager;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.internal.expression.Expression;
-import com.sk89q.worldedit.internal.expression.runtime.Constant;
-import com.sk89q.worldedit.internal.expression.runtime.RValue;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.scripting.CraftScriptContext;
 import com.sk89q.worldedit.scripting.CraftScriptEngine;
 import com.sk89q.worldedit.scripting.RhinoCraftScriptEngine;
 import com.sk89q.worldedit.session.SessionManager;
-import com.sk89q.worldedit.session.request.Request;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.eventbus.EventBus;
@@ -53,7 +49,6 @@ import com.sk89q.worldedit.util.io.file.FileSelectionAbortedException;
 import com.sk89q.worldedit.util.io.file.FilenameException;
 import com.sk89q.worldedit.util.io.file.FilenameResolutionException;
 import com.sk89q.worldedit.util.io.file.InvalidFilenameException;
-import com.sk89q.worldedit.util.logging.WorldEditPrefixHandler;
 import com.sk89q.worldedit.util.task.SimpleSupervisor;
 import com.sk89q.worldedit.util.task.Supervisor;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
@@ -61,6 +56,8 @@ import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.registry.BundledBlockData;
 import com.sk89q.worldedit.world.registry.BundledItemData;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
 import javax.script.ScriptException;
@@ -97,9 +94,9 @@ import static com.sk89q.worldedit.event.platform.Interaction.OPEN;
  */
 public final class WorldEdit {
 
-    public static final Logger logger = Logger.getLogger(WorldEdit.class.getCanonicalName());
+    public static final Logger logger = LoggerFactory.getLogger(WorldEdit.class);
 
-    private final static WorldEdit instance = new WorldEdit();
+    private static final WorldEdit instance = new WorldEdit();
     private static String version;
 
     private final EventBus eventBus = new EventBus();
@@ -114,7 +111,6 @@ public final class WorldEdit {
     private final PatternFactory patternFactory = new PatternFactory(this);
 
     static {
-        WorldEditPrefixHandler.register("com.sk89q.worldedit");
         getVersion();
     }
 
@@ -670,16 +666,16 @@ public final class WorldEdit {
         } catch (ScriptException e) {
             player.printError("Failed to execute:");
             player.printRaw(e.getMessage());
-            logger.log(Level.WARNING, "Failed to execute script", e);
+            logger.warn("Failed to execute script", e);
         } catch (NumberFormatException | WorldEditException e) {
             throw e;
         } catch (Throwable e) {
             player.printError("Failed to execute (see console):");
             player.printRaw(e.getClass().getCanonicalName());
-            logger.log(Level.WARNING, "Failed to execute script", e);
+            logger.warn("Failed to execute script", e);
         } finally {
             for (EditSession editSession : scriptContext.getEditSessions()) {
-                editSession.flushQueue();
+                editSession.flushSession();
                 session.remember(editSession);
             }
         }

worldedit-core/src/main/java/com/sk89q/worldedit/blocks/BaseItem.java

@@ -27,6 +27,8 @@ import com.sk89q.worldedit.world.item.ItemTypes;
 
 import javax.annotation.Nullable;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
 /**
  * Represents an item, without an amount value. See {@link BaseItemStack}
  * for an instance with stack amount information.
@@ -45,6 +47,7 @@ public class BaseItem implements NbtValued {
      * @param itemType Type of the item
      */
     public BaseItem(ItemType itemType) {
+        checkNotNull(itemType);
         this.itemType = itemType;
     }
 
@@ -54,7 +57,8 @@ public class BaseItem implements NbtValued {
      * @param itemType Type of the item
      * @param tag NBT Compound tag
      */
-    public BaseItem(ItemType itemType, CompoundTag tag) {
+    public BaseItem(ItemType itemType, @Nullable CompoundTag tag) {
+        checkNotNull(itemType);
         this.itemType = itemType;
         this.nbtData = tag;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/blocks/Blocks.java

@@ -19,14 +19,13 @@
 
 package com.sk89q.worldedit.blocks;
 
-import com.sk89q.worldedit.world.block.BlockCategories;
+import com.google.common.collect.Maps;
+import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
-import com.sk89q.worldedit.world.block.BlockTypes;
 
 import java.util.Collection;
-import java.util.HashSet;
+import java.util.Map;
-import java.util.Set;
 
 /**
  * Block-related utility methods.
@@ -36,143 +35,6 @@ public final class Blocks {
     private Blocks() {
     }
 
-    /**
-     * HashSet for shouldPlaceLate.
-     */
-    private static final Set<BlockType> shouldPlaceLate = new HashSet<>();
-    static {
-        shouldPlaceLate.add(BlockTypes.WATER);
-        shouldPlaceLate.add(BlockTypes.LAVA);
-        shouldPlaceLate.add(BlockTypes.GRAVEL);
-        shouldPlaceLate.add(BlockTypes.SAND);
-    }
-    /**
-     * Checks to see whether a block should be placed in the final queue.
-     *
-     * This applies to blocks that can be attached to other blocks that have an attachment.
-     *
-     * @param type the type of the block
-     * @return whether the block is in the late queue
-     */
-    public static boolean shouldPlaceLate(BlockType type) {
-        return shouldPlaceLate.contains(type);
-    }
-
-    /**
-     * HashSet for shouldPlaceLast.
-     */
-    private static final Set<BlockType> shouldPlaceLast = new HashSet<>();
-    static {
-        shouldPlaceLast.addAll(BlockCategories.SAPLINGS.getAll());
-        shouldPlaceLast.addAll(BlockCategories.FLOWER_POTS.getAll());
-        shouldPlaceLast.addAll(BlockCategories.BUTTONS.getAll());
-        shouldPlaceLast.addAll(BlockCategories.ANVIL.getAll()); // becomes relevant with asynchronous placement
-        shouldPlaceLast.addAll(BlockCategories.WOODEN_PRESSURE_PLATES.getAll());
-        shouldPlaceLast.addAll(BlockCategories.CARPETS.getAll());
-        shouldPlaceLast.addAll(BlockCategories.RAILS.getAll());
-        shouldPlaceLast.add(BlockTypes.BLACK_BED);
-        shouldPlaceLast.add(BlockTypes.BLUE_BED);
-        shouldPlaceLast.add(BlockTypes.BROWN_BED);
-        shouldPlaceLast.add(BlockTypes.CYAN_BED);
-        shouldPlaceLast.add(BlockTypes.GRAY_BED);
-        shouldPlaceLast.add(BlockTypes.GREEN_BED);
-        shouldPlaceLast.add(BlockTypes.LIGHT_BLUE_BED);
-        shouldPlaceLast.add(BlockTypes.LIGHT_GRAY_BED);
-        shouldPlaceLast.add(BlockTypes.LIME_BED);
-        shouldPlaceLast.add(BlockTypes.MAGENTA_BED);
-        shouldPlaceLast.add(BlockTypes.ORANGE_BED);
-        shouldPlaceLast.add(BlockTypes.PINK_BED);
-        shouldPlaceLast.add(BlockTypes.PURPLE_BED);
-        shouldPlaceLast.add(BlockTypes.RED_BED);
-        shouldPlaceLast.add(BlockTypes.WHITE_BED);
-        shouldPlaceLast.add(BlockTypes.YELLOW_BED);
-        shouldPlaceLast.add(BlockTypes.GRASS);
-        shouldPlaceLast.add(BlockTypes.TALL_GRASS);
-        shouldPlaceLast.add(BlockTypes.ROSE_BUSH);
-        shouldPlaceLast.add(BlockTypes.DANDELION);
-        shouldPlaceLast.add(BlockTypes.BROWN_MUSHROOM);
-        shouldPlaceLast.add(BlockTypes.RED_MUSHROOM);
-        shouldPlaceLast.add(BlockTypes.FERN);
-        shouldPlaceLast.add(BlockTypes.LARGE_FERN);
-        shouldPlaceLast.add(BlockTypes.OXEYE_DAISY);
-        shouldPlaceLast.add(BlockTypes.AZURE_BLUET);
-        shouldPlaceLast.add(BlockTypes.TORCH);
-        shouldPlaceLast.add(BlockTypes.WALL_TORCH);
-        shouldPlaceLast.add(BlockTypes.FIRE);
-        shouldPlaceLast.add(BlockTypes.REDSTONE_WIRE);
-        shouldPlaceLast.add(BlockTypes.CARROTS);
-        shouldPlaceLast.add(BlockTypes.POTATOES);
-        shouldPlaceLast.add(BlockTypes.WHEAT);
-        shouldPlaceLast.add(BlockTypes.BEETROOTS);
-        shouldPlaceLast.add(BlockTypes.COCOA);
-        shouldPlaceLast.add(BlockTypes.LADDER);
-        shouldPlaceLast.add(BlockTypes.LEVER);
-        shouldPlaceLast.add(BlockTypes.REDSTONE_TORCH);
-        shouldPlaceLast.add(BlockTypes.REDSTONE_WALL_TORCH);
-        shouldPlaceLast.add(BlockTypes.SNOW);
-        shouldPlaceLast.add(BlockTypes.NETHER_PORTAL);
-        shouldPlaceLast.add(BlockTypes.END_PORTAL);
-        shouldPlaceLast.add(BlockTypes.REPEATER);
-        shouldPlaceLast.add(BlockTypes.VINE);
-        shouldPlaceLast.add(BlockTypes.LILY_PAD);
-        shouldPlaceLast.add(BlockTypes.NETHER_WART);
-        shouldPlaceLast.add(BlockTypes.PISTON);
-        shouldPlaceLast.add(BlockTypes.STICKY_PISTON);
-        shouldPlaceLast.add(BlockTypes.TRIPWIRE_HOOK);
-        shouldPlaceLast.add(BlockTypes.TRIPWIRE);
-        shouldPlaceLast.add(BlockTypes.STONE_PRESSURE_PLATE);
-        shouldPlaceLast.add(BlockTypes.HEAVY_WEIGHTED_PRESSURE_PLATE);
-        shouldPlaceLast.add(BlockTypes.LIGHT_WEIGHTED_PRESSURE_PLATE);
-        shouldPlaceLast.add(BlockTypes.COMPARATOR);
-        shouldPlaceLast.add(BlockTypes.IRON_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.ACACIA_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.BIRCH_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.DARK_OAK_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.JUNGLE_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.OAK_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.SPRUCE_TRAPDOOR);
-        shouldPlaceLast.add(BlockTypes.DAYLIGHT_DETECTOR);
-    }
-
-    /**
-     * Checks to see whether a block should be placed last (when reordering
-     * blocks that are placed).
-     *
-     * @param type the block type
-     * @return true if the block should be placed last
-     */
-    public static boolean shouldPlaceLast(BlockType type) {
-        return shouldPlaceLast.contains(type);
-    }
-
-    /**
-     * HashSet for shouldPlaceLast.
-     */
-    private static final Set<BlockType> shouldPlaceFinal = new HashSet<>();
-    static {
-        shouldPlaceFinal.addAll(BlockCategories.DOORS.getAll());
-        shouldPlaceFinal.addAll(BlockCategories.BANNERS.getAll());
-        shouldPlaceFinal.add(BlockTypes.SIGN);
-        shouldPlaceFinal.add(BlockTypes.WALL_SIGN);
-        shouldPlaceFinal.add(BlockTypes.CACTUS);
-        shouldPlaceFinal.add(BlockTypes.SUGAR_CANE);
-        shouldPlaceFinal.add(BlockTypes.CAKE);
-        shouldPlaceFinal.add(BlockTypes.PISTON_HEAD);
-        shouldPlaceFinal.add(BlockTypes.MOVING_PISTON);
-    }
-
-    /**
-     * Checks to see whether a block should be placed in the final queue.
-     *
-     * This applies to blocks that can be attached to other blocks that have an attachment.
-     *
-     * @param type the type of the block
-     * @return whether the block is in the final queue
-     */
-    public static boolean shouldPlaceFinal(BlockType type) {
-        return shouldPlaceFinal.contains(type);
-    }
-
     /**
      * Checks whether a given block is in a list of base blocks.
      *
@@ -190,4 +52,28 @@ public final class Blocks {
         return false;
     }
 
+    /**
+     * Parses a string->string map to find the matching Property and values for the given BlockType.
+     *
+     * @param states the desired states and values
+     * @param type the block type to get properties and values for
+     * @return a property->value map
+     */
+    public static Map<Property<Object>, Object> resolveProperties(Map<String, String> states, BlockType type) {
+        Map<String, ? extends Property<?>> existing = type.getPropertyMap();
+        Map<Property<Object>, Object> newMap = Maps.newHashMap();
+        states.forEach((key, value) -> {
+            @SuppressWarnings("unchecked")
+            Property<Object> prop = (Property<Object>) existing.get(key);
+            if (prop == null) return;
+            Object val = null;
+            try {
+                val = prop.getValueFor(value);
+            } catch (IllegalArgumentException ignored) {
+            }
+            if (val == null) return;
+            newMap.put(prop, val);
+        });
+        return newMap;
+    }
 }

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

@@ -53,15 +53,17 @@ import com.sk89q.worldedit.util.Countable;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.command.binding.Switch;
 import com.sk89q.worldedit.world.World;
-import com.sk89q.worldedit.world.biome.BaseBiome;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeData;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.registry.BiomeRegistry;
+
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
-
+import java.util.Set;
-
-import static com.sk89q.minecraft.util.commands.Logging.LogMode.REGION;
 
 /**
  * Implements biome-related commands such as "/biomelist".
@@ -102,11 +104,11 @@ public class BiomeCommands extends MethodCommands {
         }
 
         BiomeRegistry biomeRegistry = getBiomeRegistry();
-        List<BaseBiome> biomes = biomeRegistry.getBiomes();
+        List<BiomeType> biomes = biomeRegistry.getBiomes();
         int totalPages = biomes.size() / 19 + 1;
         Message msg = BBC.BIOME_LIST_HEADER.m(page, totalPages);
         String setBiome = Commands.getAlias(BiomeCommands.class, "/setbiome");
-        for (BaseBiome biome : biomes) {
+        for (BiomeType biome : biomes) {
             if (offset > 0) {
                 offset--;
             } else {
@@ -150,12 +152,12 @@ public class BiomeCommands extends MethodCommands {
                 return;
             }
 
-            BaseBiome biome = player.getWorld().getBiome(blockPosition.toBlockPoint().toBlockVector2());
+            BiomeType biome = player.getWorld().getBiome(blockPosition.toBlockPoint().toBlockVector2());
-            biomes[biome.getId()]++;
+            biomes[biome.getInternalId()]++;
             size = 1;
         } else if (args.hasFlag('p')) {
-            BaseBiome biome = player.getWorld().getBiome(player.getLocation().toBlockPoint().toBlockVector2());
+            BiomeType biome = player.getWorld().getBiome(player.getLocation().toBlockPoint().toBlockVector2());
-            biomes[biome.getId()]++;
+            biomes[biome.getInternalId()]++;
             size = 1;
         } else {
             World world = player.getWorld();
@@ -181,15 +183,15 @@ public class BiomeCommands extends MethodCommands {
 
         BBC.BIOME_LIST_HEADER.send(player, 1, 1);
 
-        List<Countable<BaseBiome>> distribution = new ArrayList<>();
+        List<Countable<BiomeType>> distribution = new ArrayList<>();
         for (int i = 0; i < biomes.length; i++) {
             int count = biomes[i];
             if (count != 0) {
-                distribution.add(new Countable<>(new BaseBiome(i), count));
+                distribution.add(new Countable<>(new BiomeType(i), count));
             }
         }
         Collections.sort(distribution);
-        for (Countable<BaseBiome> c : distribution) {
+        for (Countable<BiomeType> c : distribution) {
             BiomeData data = biomeRegistry.getData(c.getID());
             String str = String.format("%-7s (%.3f%%) %s #%d",
                     String.valueOf(c.getAmount()),
@@ -212,7 +214,7 @@ public class BiomeCommands extends MethodCommands {
     )
     @Logging(REGION)
     @CommandPermissions("worldedit.biome.set")
-    public void setBiome(Player player, LocalSession session, EditSession editSession, BaseBiome target, @Switch('p') boolean atPosition) throws WorldEditException {
+    public void setBiome(Player player, LocalSession session, EditSession editSession, BiomeType target, @Switch('p') boolean atPosition) throws WorldEditException {
         World world = player.getWorld();
         Region region;
         Mask mask = editSession.getMask();

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

@@ -37,8 +37,6 @@ import com.sk89q.minecraft.util.commands.Command;
 import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandPermissions;
 import com.sk89q.minecraft.util.commands.Step;
-import com.sk89q.worldedit.*;
-import com.sk89q.worldedit.command.tool.brush.*;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
@@ -633,7 +631,7 @@ public class BrushCommands extends BrushProcessor {
     )
     @CommandPermissions("worldedit.brush.smooth")
     public BrushSettings smoothBrush(Player player, LocalSession session, EditSession editSession,
-                                     @Optional("2") Expression radius, @Optional("4") int iterations, CommandContext context) throws WorldEditException {
+                                     @Optional("2") Expression radius, @Optional("4") int iterations, @Optional Mask mask, CommandContext context) throws WorldEditException {
 
         getWorldEdit().checkMaxBrushRadius(radius);
 
@@ -642,7 +640,7 @@ public class BrushCommands extends BrushProcessor {
         iterations = Math.min(limit.MAX_ITERATIONS, iterations);
 
         return set(session, context,
-                new SmoothBrush(iterations))
+                new SmoothBrush(iterations, mask))
                 .setSize(radius);
     }
 

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

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.command;
 
 import com.boydti.fawe.config.BBC;
 import com.sk89q.minecraft.util.commands.Command;
-import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandPermissions;
 import com.sk89q.minecraft.util.commands.Logging;
 import com.sk89q.worldedit.EditSession;
@@ -106,7 +105,7 @@ public class ChunkCommands {
     )
     @CommandPermissions("worldedit.delchunks")
     @Logging(REGION)
-    public void deleteChunks(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void deleteChunks(Player player, LocalSession session) throws WorldEditException {
         player.print(BBC.getPrefix() + "Note that this command does not yet support the mcregion format.");
         LocalConfiguration config = worldEdit.getConfiguration();
 

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

@@ -579,7 +579,7 @@ public class ClipboardCommands extends MethodCommands {
             max = 1
     )
     @CommandPermissions("worldedit.clipboard.flip")
-    public void flip(Player player, LocalSession session, EditSession editSession,
+    public void flip(Player player, LocalSession session,
                      @Optional(Direction.AIM) @Direction BlockVector3 direction) throws WorldEditException {
         ClipboardHolder holder = session.getClipboard();
         AffineTransform transform = new AffineTransform();
@@ -597,7 +597,7 @@ public class ClipboardCommands extends MethodCommands {
             max = 0
     )
     @CommandPermissions("worldedit.clipboard.clear")
-    public void clearClipboard(Player player, LocalSession session, EditSession editSession) throws WorldEditException {
+    public void clearClipboard(Player player, LocalSession session) throws WorldEditException {
         session.setClipboard(null);
         BBC.CLIPBOARD_CLEARED.send(player);
     }

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

@@ -26,8 +26,6 @@ import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.extent.transform.BlockTransformExtent;
 import com.sk89q.worldedit.function.operation.ForwardExtentCopy;
 import com.sk89q.worldedit.function.operation.Operation;
-import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableVector3;
 import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.math.transform.AffineTransform;
 import com.sk89q.worldedit.math.transform.CombinedTransform;
@@ -96,20 +94,18 @@ public class FlattenedClipboardTransform {
 
         MutableVector3 newMinimum = new MutableVector3(corners[0]);
         MutableVector3 newMaximum = new MutableVector3(corners[0]);
-//        MutableVector3 cbv = new MutableVector3();
         for (int i = 1; i < corners.length; i++) {
-        	MutableVector3 cbv = new MutableVector3(corners[i]);
+            Vector3 cbv = corners[i];
             newMinimum = newMinimum.setComponents(newMinimum.getMinimum(cbv));
             newMaximum = newMaximum.setComponents(newMaximum.getMaximum(cbv));
         }
 
         // After transformation, the points may not really sit on a block,
         // so we should expand the region for edge cases
-        newMinimum.mutX(Math.ceil(Math.floor(newMinimum.getX())));
+        newMinimum = newMinimum.floor();
-        newMinimum.mutY(Math.ceil(Math.floor(newMinimum.getY())));
+        newMaximum = newMaximum.ceil();
-        newMinimum.mutZ(Math.ceil(Math.floor(newMinimum.getZ())));
 
-        return new CuboidRegion(BlockVector3.at(newMinimum.getX(), newMinimum.getY(), newMinimum.getZ()), BlockVector3.at(newMaximum.getX(), newMaximum.getY(), newMaximum.getZ()));
+        return new CuboidRegion(newMinimum.toBlockPoint(), newMaximum.toBlockPoint());
     }
 
     /**

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

@@ -59,7 +59,7 @@ public class GeneralCommands {
         max = 1
     )
     @CommandPermissions("worldedit.limit")
-    public void limit(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void limit(Player player, LocalSession session, CommandContext args) throws WorldEditException {
         
         LocalConfiguration config = worldEdit.getConfiguration();
         boolean mayDisable = player.hasPermission("worldedit.limit.unrestricted");
@@ -74,13 +74,43 @@ public class GeneralCommands {
 
         session.setBlockChangeLimit(limit);
 
-        if (limit != -1) {
+        if (limit != config.defaultChangeLimit) {
-            player.print("Block change limit set to " + limit + ". (Use //limit -1 to go back to the default.)");
+            player.print("Block change limit set to " + limit + ". (Use //limit to go back to the default.)");
         } else {
             player.print("Block change limit set to " + limit + ".");
         }
     }
 
+    @Command(
+            aliases = { "/timeout" },
+            usage = "[time]",
+            desc = "Modify evaluation timeout time.",
+            min = 0,
+            max = 1
+    )
+    @CommandPermissions("worldedit.timeout")
+    public void timeout(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+
+        LocalConfiguration config = worldEdit.getConfiguration();
+        boolean mayDisable = player.hasPermission("worldedit.timeout.unrestricted");
+
+        int limit = args.argsLength() == 0 ? config.calculationTimeout : Math.max(-1, args.getInteger(0));
+        if (!mayDisable && config.maxCalculationTimeout > -1) {
+            if (limit > config.maxCalculationTimeout) {
+                player.printError("Your maximum allowable timeout is " + config.maxCalculationTimeout + " ms.");
+                return;
+            }
+        }
+
+        session.setTimeout(limit);
+
+        if (limit != config.calculationTimeout) {
+            player.print("Timeout time set to " + limit + " ms. (Use //timeout to go back to the default.)");
+        } else {
+            player.print("Timeout time set to " + limit + " ms.");
+        }
+    }
+
     @Command(
         aliases = { "/fast" },
         usage = "[on|off]",
@@ -89,7 +119,7 @@ public class GeneralCommands {
         max = 1
     )
     @CommandPermissions("worldedit.fast")
-    public void fast(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void fast(Player player, LocalSession session, CommandContext args) throws WorldEditException {
 
         String newState = args.getString(0, null);
         if (session.hasFastMode()) {
@@ -111,6 +141,41 @@ public class GeneralCommands {
         }
     }
 
+    @Command(
+            aliases = { "/drawsel" },
+            usage = "[on|off]",
+            desc = "Toggle drawing the current selection",
+            min = 0,
+            max = 1
+    )
+    @CommandPermissions("worldedit.drawsel")
+    public void drawSelection(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+
+        if (!WorldEdit.getInstance().getConfiguration().serverSideCUI) {
+            throw new DisallowedUsageException("This functionality is disabled in the configuration!");
+        }
+        String newState = args.getString(0, null);
+        if (session.shouldUseServerCUI()) {
+            if ("on".equals(newState)) {
+                player.printError("Server CUI already enabled.");
+                return;
+            }
+
+            session.setUseServerCUI(false);
+            session.updateServerCUI(player);
+            player.print("Server CUI disabled.");
+        } else {
+            if ("off".equals(newState)) {
+                player.printError("Server CUI already disabled.");
+                return;
+            }
+
+            session.setUseServerCUI(true);
+            session.updateServerCUI(player);
+            player.print("Server CUI enabled. This only supports cuboid regions, with a maximum size of 32x32x32.");
+        }
+    }
+
     @Command(
         aliases = { "/gmask", "gmask" },
         usage = "[mask]",
@@ -119,7 +184,7 @@ public class GeneralCommands {
         max = -1
     )
     @CommandPermissions("worldedit.global-mask")
-    public void gmask(Player player, LocalSession session, EditSession editSession, @Optional Mask mask) throws WorldEditException {
+    public void gmask(Player player, LocalSession session, @Optional Mask mask) throws WorldEditException {
         if (mask == null) {
             session.setMask((Mask) null);
             player.print("Global mask disabled.");
@@ -136,7 +201,7 @@ public class GeneralCommands {
         min = 0,
         max = 0
     )
-    public void togglePlace(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void togglePlace(Player player, LocalSession session) throws WorldEditException {
 
         if (session.togglePlacementPosition()) {
             player.print("Now placing at pos #1.");

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

@@ -54,19 +54,7 @@ import com.sk89q.worldedit.util.command.binding.Range;
 import com.sk89q.worldedit.util.command.binding.Switch;
 import com.sk89q.worldedit.util.command.binding.Text;
 import com.sk89q.worldedit.util.command.parametric.Optional;
-import com.sk89q.worldedit.util.command.parametric.ParameterException;
+import com.sk89q.worldedit.world.biome.BiomeType;
-import com.sk89q.worldedit.world.biome.BaseBiome;
-import com.sk89q.worldedit.world.block.BlockType;
-
-import java.awt.RenderingHints;
-import java.awt.image.BufferedImage;
-import java.io.IOException;
-import java.net.URL;
-
-
-import static com.sk89q.minecraft.util.commands.Logging.LogMode.ALL;
-import static com.sk89q.minecraft.util.commands.Logging.LogMode.PLACEMENT;
-import static com.sk89q.minecraft.util.commands.Logging.LogMode.POSITION;
 
 /**
  * Commands for the generation of shapes and other objects.
@@ -287,7 +275,7 @@ public class GenerationCommands extends MethodCommands {
     @CommandPermissions("worldedit.generation.forest")
     @Logging(POSITION)
     @SuppressWarnings("deprecation")
-    public void forestGen(Player player, LocalSession session, EditSession editSession, @Optional("10") int size, @Optional("tree") TreeType type, @Optional("5") double density) throws WorldEditException, ParameterException {
+    public void forestGen(Player player, LocalSession session, EditSession editSession, @Optional("10") int size, @Optional("tree") TreeType type, @Optional("5") @Range(min = 0, max = 100) double density) throws WorldEditException, ParameterException {
         density = density / 100;
         int affected = editSession.makeForest(session.getPlacementPosition(player), size, density, type);
         player.print(BBC.getPrefix() + affected + " trees created.");
@@ -430,16 +418,16 @@ public class GenerationCommands extends MethodCommands {
             min = 2,
             max = -1
     )
-    @CommandPermissions({"worldedit.generation.shape", "worldedit.biome.set"})
+    @CommandPermissions("worldedit.generation.shape.biome")
     @Logging(ALL)
     public void generateBiome(FawePlayer fp, Player player, LocalSession session, EditSession editSession,
                               @Selection Region region,
-                              BaseBiome target,
+                              BiomeType target,
                               @Text String expression,
                               @Switch('h') boolean hollow,
                               @Switch('r') boolean useRawCoords,
                               @Switch('o') boolean offset,
-                              @Switch('c') boolean offsetCenter, CommandContext context) throws WorldEditException {
+                              @Switch('c') boolean offsetCenter) throws WorldEditException {
         final Vector3 zero;
         Vector3 unit;
 

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

@@ -265,7 +265,6 @@ public class HistoryCommands extends MethodCommands {
     )
     @CommandPermissions("worldedit.history.redo")
     public void redo(Player player, LocalSession session, CommandContext args) throws WorldEditException {
-
         int times = Math.max(1, args.getInteger(0, 1));
 
         EditSession redone = null;

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

@@ -27,7 +27,6 @@ import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandPermissions;
 import com.sk89q.minecraft.util.commands.Logging;
 import com.sk89q.worldedit.LocalConfiguration;
-import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.Player;
@@ -134,7 +133,7 @@ public class NavigationCommands {
     )
     @CommandPermissions("worldedit.navigation.ceiling")
     @Logging(POSITION)
-    public void ceiling(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void ceiling(Player player, CommandContext args) throws WorldEditException {
 
         final int clearance = args.argsLength() > 0 ?
                 Math.max(0, args.getInteger(0)) : 0;
@@ -155,7 +154,7 @@ public class NavigationCommands {
             max = 0
     )
     @CommandPermissions("worldedit.navigation.thru.command")
-    public void thru(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void thru(Player player) throws WorldEditException {
         if (player.passThroughForwardWall(6)) {
             BBC.WHOOSH.send(player);
         } else {
@@ -207,7 +206,7 @@ public class NavigationCommands {
     )
     @CommandPermissions("worldedit.navigation.up")
     @Logging(POSITION)
-    public void up(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void up(Player player, CommandContext args) throws WorldEditException {
         final int distance = args.getInteger(0);
 
         final boolean alwaysGlass = getAlwaysGlass(args);

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

@@ -53,7 +53,6 @@ import com.sk89q.worldedit.function.visitor.LayerVisitor;
 import com.sk89q.worldedit.internal.annotation.Direction;
 import com.sk89q.worldedit.internal.annotation.Selection;
 import com.sk89q.worldedit.internal.expression.ExpressionException;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.math.convolution.GaussianKernel;
@@ -67,10 +66,6 @@ import com.sk89q.worldedit.util.command.binding.Range;
 import com.sk89q.worldedit.util.command.binding.Switch;
 import com.sk89q.worldedit.util.command.binding.Text;
 import com.sk89q.worldedit.util.command.parametric.Optional;
-import com.sk89q.worldedit.world.biome.BaseBiome;
-import com.sk89q.worldedit.world.biome.Biomes;
-import com.sk89q.worldedit.world.block.BlockStateHolder;
-import com.sk89q.worldedit.world.registry.BiomeRegistry;
 
 import java.util.ArrayList;
 import java.util.Iterator;
@@ -455,19 +450,18 @@ public class RegionCommands extends MethodCommands {
 
     @Command(
         aliases = { "/smooth" },
-            usage = "[iterations]",
+        usage = "[iterations] [filter]",
-            flags = "n",
         desc = "Smooth the elevation in the selection",
         help =
             "Smooths the elevation in the selection.\n" +
-                            "The -n flag makes it only consider naturally occuring blocks.\n" +
+            "Optionally, restricts the height map to a set of blocks specified with mask syntax.\n" +
-                            "The -s flag makes it only consider snow.",
+            "For example, '//smooth 1 grass_block,dirt,stone' would only smooth natural surface terrain.",
         min = 0,
         max = 2
     )
     @CommandPermissions("worldedit.region.smoothsnow")
     @Logging(REGION)
-    public void smooth(FawePlayer player, EditSession editSession, @Selection Region region, @Optional("1") int iterations, @Switch('n') boolean affectNatural, @Switch('s') boolean snow, CommandContext context) throws WorldEditException {
+    public void smooth(FawePlayer player, EditSession editSession, @Selection Region region, @Optional("1") int iterations, @Optional Mask mask, @Switch('s') boolean snow, CommandContext context) throws WorldEditException {
     	BlockVector3 min = region.getMinimumPoint();
     	BlockVector3 max = region.getMaximumPoint();
         long volume = (((long) max.getX() - (long) min.getX() + 1) * ((long) max.getY() - (long) min.getY() + 1) * ((long) max.getZ() - (long) min.getZ() + 1));
@@ -477,8 +471,8 @@ public class RegionCommands extends MethodCommands {
         }
         player.checkConfirmationRegion(() -> {
             try {
-                HeightMap heightMap = new HeightMap(editSession, region, affectNatural, snow);
+                HeightMap heightMap = new HeightMap(editSession, region, mask, snow);
-                HeightMapFilter filter = (HeightMapFilter) HeightMapFilter.class.getConstructors()[0].newInstance(GaussianKernel.class.getConstructors()[0].newInstance(5, 1));
+                HeightMapFilter filter = new HeightMapFilter(new GaussianKernel(5, 1.0));
                 int affected = heightMap.applyFilter(filter, iterations);
                 BBC.VISITOR_BLOCK.send(player, affected);
             } catch (Throwable e) {
@@ -523,7 +517,7 @@ public class RegionCommands extends MethodCommands {
     @Command(
             aliases = {"/move"},
             usage = "[count] [direction] [leave-id]",
-            flags = "s",
+            flags = "sbea",
             desc = "Move the contents of the selection",
             help =
                     "Moves the contents of the selection.\n" +
@@ -707,10 +701,10 @@ public class RegionCommands extends MethodCommands {
             Mask sourceMask = session.getSourceMask();
             session.setMask((Mask) null);
             session.setSourceMask((Mask) null);
-            BaseBiome biome = null;
+            BiomeType biome = null;
             if (context.argsLength() >= 1) {
                 BiomeRegistry biomeRegistry = worldEdit.getPlatformManager().queryCapability(Capability.GAME_HOOKS).getRegistries().getBiomeRegistry();
-                List<BaseBiome> knownBiomes = biomeRegistry.getBiomes();
+                List<BiomeType> knownBiomes = biomeRegistry.getBiomes();
                 biome = Biomes.findBiomeByName(knownBiomes, context.getString(0), biomeRegistry);
             }
             Long seed = context.argsLength() != 2 || !MathMan.isInteger(context.getString(1)) ? null : Long.parseLong(context.getString(1));
@@ -766,19 +760,10 @@ public class RegionCommands extends MethodCommands {
     )
     @CommandPermissions("worldedit.region.forest")
     @Logging(REGION)
-    public void forest(FawePlayer player, EditSession editSession, @Selection Region region, @Optional("tree") TreeType type,
+    public void forest(Player player, EditSession editSession, @Selection Region region, @Optional("tree") TreeType type,
-                       @Optional("5") @Range(min = 0, max = 100) double density,
+                       @Optional("5") @Range(min = 0, max = 100) double density) throws WorldEditException {
-                       CommandContext context) throws WorldEditException {
+        int affected = editSession.makeForest(region, density / 100, type);
-        player.checkConfirmationRegion(() -> {
+        player.print(affected + " trees created.");
-            ForestGenerator generator = new ForestGenerator(editSession, type);
-            GroundFunction ground = new GroundFunction(new ExistingBlockMask(editSession), generator);
-            LayerVisitor visitor = new LayerVisitor(asFlatRegion(region), minimumBlockY(region), maximumBlockY(region), ground);
-            visitor.setMask(new NoiseFilter2D(new RandomNoise(), density / 100));
-            Operations.completeLegacy(visitor);
-
-            BBC.COMMAND_TREE.send(player, ground.getAffected());
-        }, getArguments(context), region, context);
-
     }
 
     @Command(

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

@@ -32,6 +32,7 @@ import com.boydti.fawe.object.schematic.StructureFormat;
 import com.boydti.fawe.object.schematic.visualizer.SchemVis;
 import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.chat.Message;
+import com.google.common.collect.Multimap;
 import com.sk89q.minecraft.util.commands.Command;
 import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandException;
@@ -55,23 +56,30 @@ import com.sk89q.worldedit.session.ClipboardHolder;
 import com.sk89q.worldedit.util.command.binding.Switch;
 import com.sk89q.worldedit.util.command.parametric.Optional;
 import com.sk89q.worldedit.util.io.file.FilenameException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-import javax.annotation.Nullable;
+import java.io.BufferedInputStream;
-import java.io.*;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
-import java.net.URL;
 import java.nio.channels.Channels;
 import java.nio.channels.ReadableByteChannel;
 import java.nio.file.Files;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
 import java.util.concurrent.atomic.LongAdder;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import java.util.regex.Pattern;
 
-
+import static com.google.common.base.Preconditions.checkNotNull;
-import static com.boydti.fawe.util.ReflectionUtils.as;
 
 /**
  * Commands that work with schematic files.
@@ -79,7 +87,12 @@ import static com.boydti.fawe.util.ReflectionUtils.as;
 @Command(aliases = {"schematic", "schem", "/schematic", "/schem", "clipboard", "/clipboard"}, desc = "Commands that work with schematic files")
 public class SchematicCommands extends MethodCommands {
 
-    private static final Logger log = Logger.getLogger(SchematicCommands.class.getCanonicalName());
+    /**
+     * 9 schematics per page fits in the MC chat window.
+     */
+    private static final int SCHEMATICS_PER_PAGE = 9;
+    private static final Logger log = LoggerFactory.getLogger(SchematicCommands.class);
+    private final WorldEdit worldEdit;
 
     /**
      * Create a new instance.
@@ -280,7 +293,7 @@ public class SchematicCommands extends MethodCommands {
     @Command(aliases = {"save"}, usage = "[format] <filename>", desc = "Save a schematic into your clipboard", help = "The default format for 1.13 is schem")
     @Deprecated
     @CommandPermissions({"worldedit.clipboard.save", "worldedit.schematic.save", "worldedit.schematic.save.other"})
-    public void save(final Player player, final LocalSession session, @Optional("schem") final String formatName, String filename, @Switch('g') boolean global) throws CommandException, WorldEditException {
+    public void save(final Player player, final LocalSession session, @Optional("schem") final String formatName, String filename, @Switch('g') boolean global, @Switch('f') boolean allowOverwrite) throws CommandException, WorldEditException {
         final LocalConfiguration config = this.worldEdit.getConfiguration();
         final ClipboardFormat format = ClipboardFormats.findByAlias(formatName);
         if (format == null) {
@@ -324,6 +337,8 @@ public class SchematicCommands extends MethodCommands {
         try {
             if (!f.exists()) {
                 f.createNewFile();
+            } else if (!allowOverwrite) {
+                BBC.SCHEMATIC_MOVE_EXISTS.send(player, f.getName());
             }
             try (FileOutputStream fos = new FileOutputStream(f)) {
                 final ClipboardHolder holder = session.getClipboard();
@@ -363,7 +378,7 @@ public class SchematicCommands extends MethodCommands {
         } catch (IOException e) {
             e.printStackTrace();
             player.printError("Schematic could not written: " + e.getMessage());
-            log.log(Level.WARNING, "Failed to write a saved clipboard", e);
+            log.warn("Failed to write a saved clipboard", e);
         }
     }
 
@@ -645,6 +660,4 @@ public class SchematicCommands extends MethodCommands {
             }
         });
     }
-
-
 }

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

@@ -192,8 +192,9 @@ public class ScriptingCommands {
     @Command(aliases = {".s"}, usage = "[args...]", desc = "Execute last CraftScript", min = 0, max = -1)
     @CommandPermissions("worldedit.scripting.execute")
     @Logging(ALL)
-    public void executeLast(final Player player, final LocalSession session, final CommandContext args) throws WorldEditException {
+    public void executeLast(Player player, LocalSession session, CommandContext args) throws WorldEditException {
-        final String lastScript = session.getLastScript();
+        
+        String lastScript = session.getLastScript();
 
         if (!player.hasPermission("worldedit.scripting.execute." + lastScript)) {
             player.printError("You don't have permission to use that script.");

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

@@ -42,6 +42,9 @@ import com.sk89q.worldedit.extension.platform.permission.ActorSelectorLimits;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.block.BlockDistributionCounter;
+import com.sk89q.worldedit.function.operation.Operations;
+import com.sk89q.worldedit.function.visitor.RegionVisitor;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
@@ -63,6 +66,8 @@ import com.sk89q.worldedit.util.formatting.Style;
 import com.sk89q.worldedit.util.formatting.StyledFragment;
 import com.sk89q.worldedit.util.formatting.component.CommandListBox;
 import com.sk89q.worldedit.world.World;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.item.ItemTypes;
 import com.sk89q.worldedit.world.storage.ChunkStore;
 import java.io.File;
@@ -96,8 +101,9 @@ public class SelectionCommands {
     )
     @Logging(POSITION)
     @CommandPermissions("worldedit.selection.pos")
-    public void pos1(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void pos1(Player player, LocalSession session, CommandContext args) throws WorldEditException {
-        BlockVector3 pos;
+
+        Location pos;
 
         if (args.argsLength() == 1) {
             if (args.getString(0).matches("-?\\d+,-?\\d+,-?\\d+")) {
@@ -128,8 +134,9 @@ public class SelectionCommands {
     )
     @Logging(POSITION)
     @CommandPermissions("worldedit.selection.pos")
-    public void pos2(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void pos2(Player player, LocalSession session, CommandContext args) throws WorldEditException {
-    	BlockVector3 pos;
+
+        Location pos;
         if (args.argsLength() == 1) {
             if (args.getString(0).matches("-?\\d+,-?\\d+,-?\\d+")) {
                 String[] coords = args.getString(0).split(",");
@@ -161,7 +168,7 @@ public class SelectionCommands {
             max = 0
     )
     @CommandPermissions("worldedit.selection.hpos")
-    public void hpos1(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void hpos1(Player player, LocalSession session, CommandContext args) throws WorldEditException {
     	BlockVector3 pos = player.getBlockTrace(300).toBlockPoint();
 
         if (pos != null) {
@@ -185,7 +192,7 @@ public class SelectionCommands {
             max = 0
     )
     @CommandPermissions("worldedit.selection.hpos")
-    public void hpos2(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void hpos2(Player player, LocalSession session, CommandContext args) throws WorldEditException {
     	BlockVector3 pos = player.getBlockTrace(300).toBlockPoint();
 
         if (pos != null) {
@@ -219,7 +226,7 @@ public class SelectionCommands {
     )
     @Logging(POSITION)
     @CommandPermissions("worldedit.selection.chunk")
-    public void chunk(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void chunk(Player player, LocalSession session, CommandContext args) throws WorldEditException {
         final BlockVector3 min;
         final BlockVector3 max;
         final World world = player.getWorld();
@@ -278,7 +285,7 @@ public class SelectionCommands {
             max = 0
     )
     @CommandPermissions("worldedit.wand")
-    public void wand(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void wand(Player player) throws WorldEditException {
         player.giveItem(new BaseItemStack(ItemTypes.parse(we.getConfiguration().wandItem), 1));
         BBC.SELECTION_WAND.send(player);
         if (!FawePlayer.wrap(player).hasPermission("fawe.tips"))
@@ -294,6 +301,7 @@ public class SelectionCommands {
     )
     @CommandPermissions("worldedit.wand.toggle")
     public void toggleWand(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+        
         session.setToolControl(!session.isToolControlEnabled());
 
         if (session.isToolControlEnabled()) {
@@ -312,7 +320,8 @@ public class SelectionCommands {
     )
     @Logging(REGION)
     @CommandPermissions("worldedit.selection.expand")
-    public void expand(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void expand(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+
         // Special syntax (//expand vert) to expand the selection between
         // sky and bedrock.
         if (args.getString(0).equalsIgnoreCase("vert") || args.getString(0).equalsIgnoreCase("vertical")) {
@@ -402,7 +411,7 @@ public class SelectionCommands {
     )
     @Logging(REGION)
     @CommandPermissions("worldedit.selection.contract")
-    public void contract(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void contract(Player player, LocalSession session, CommandContext args) throws WorldEditException {
 
         List<BlockVector3> dirs = new ArrayList<>();
         int change = args.getInteger(0);
@@ -476,7 +485,7 @@ public class SelectionCommands {
     )
     @Logging(REGION)
     @CommandPermissions("worldedit.selection.shift")
-    public void shift(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void shift(Player player, LocalSession session, CommandContext args) throws WorldEditException {
 
         List<BlockVector3> dirs = new ArrayList<>();
         int change = args.getInteger(0);
@@ -523,7 +532,7 @@ public class SelectionCommands {
     )
     @Logging(REGION)
     @CommandPermissions("worldedit.selection.outset")
-    public void outset(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void outset(Player player, LocalSession session, CommandContext args) throws WorldEditException {
         Region region = session.getSelection(player.getWorld());
         region.expand(getChangesForEachDir(args));
         session.getRegionSelector(player.getWorld()).learnChanges();
@@ -546,7 +555,7 @@ public class SelectionCommands {
     )
     @Logging(REGION)
     @CommandPermissions("worldedit.selection.inset")
-    public void inset(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void inset(Player player, LocalSession session, CommandContext args) throws WorldEditException {
         Region region = session.getSelection(player.getWorld());
         region.contract(getChangesForEachDir(args));
         session.getRegionSelector(player.getWorld()).learnChanges();
@@ -726,7 +735,7 @@ public class SelectionCommands {
             min = 0,
             max = 1
     )
-    public void select(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void select(Player player, LocalSession session, CommandContext args) throws WorldEditException {
         final World world = player.getWorld();
         if (args.argsLength() == 0) {
             session.getRegionSelector(world).clear();

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

@@ -39,7 +39,6 @@ import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.List;
-import java.util.logging.Logger;
 
 /**
  * Snapshot commands.
@@ -47,7 +46,6 @@ import java.util.logging.Logger;
 @Command(aliases = {"snapshot", "snap"}, desc = "List, load and view information related to snapshots")
 public class SnapshotCommands {
 
-    private static final Logger logger = Logger.getLogger("Minecraft.WorldEdit");
     private static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
 
     private final WorldEdit we;
@@ -64,7 +62,7 @@ public class SnapshotCommands {
             max = 1
     )
     @CommandPermissions("worldedit.snapshots.list")
-    public void list(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void list(Player player, CommandContext args) throws WorldEditException {
 
         LocalConfiguration config = we.getConfiguration();
 
@@ -93,10 +91,10 @@ public class SnapshotCommands {
                 File dir = config.snapshotRepo.getDirectory();
 
                 try {
-                    logger.info("WorldEdit found no snapshots: looked in: "
+                    WorldEdit.logger.info("WorldEdit found no snapshots: looked in: "
                             + dir.getCanonicalPath());
                 } catch (IOException e) {
-                    logger.info("WorldEdit found no snapshots: looked in "
+                    WorldEdit.logger.info("WorldEdit found no snapshots: looked in "
                             + "(NON-RESOLVABLE PATH - does it exist?): "
                             + dir.getPath());
                 }

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

@@ -39,7 +39,6 @@ import com.sk89q.worldedit.world.storage.ChunkStore;
 import com.sk89q.worldedit.world.storage.MissingWorldException;
 import java.io.File;
 import java.io.IOException;
-import java.util.logging.Logger;
 
 
 import static com.sk89q.minecraft.util.commands.Logging.LogMode.REGION;
@@ -47,8 +46,6 @@ import static com.sk89q.minecraft.util.commands.Logging.LogMode.REGION;
 @Command(aliases = {}, desc = "[More Info](http://wiki.sk89q.com/wiki/WorldEdit/Snapshots)")
 public class SnapshotUtilCommands {
 
-    private static final Logger logger = Logger.getLogger("Minecraft.WorldEdit");
-
     private final WorldEdit we;
 
     public SnapshotUtilCommands(WorldEdit we) {
@@ -99,10 +96,10 @@ public class SnapshotUtilCommands {
                     File dir = config.snapshotRepo.getDirectory();
 
                     try {
-                        logger.info("FAWE found no snapshots: looked in: "
+                        WorldEdit.logger.info("FAWE found no snapshots: looked in: "
                                 + dir.getCanonicalPath());
                     } catch (IOException e) {
-                        logger.info("FAWE found no snapshots: looked in "
+                        WorldEdit.logger.info("FAWE found no snapshots: looked in "
                                 + "(NON-RESOLVABLE PATH - does it exist?): "
                                 + dir.getPath());
                     }

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

@@ -48,7 +48,7 @@ public class SuperPickaxeCommands {
             max = 0
     )
     @CommandPermissions("worldedit.superpickaxe")
-    public void single(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void single(Player player, LocalSession session) throws WorldEditException {
 
         session.setSuperPickaxe(new SinglePickaxe());
         session.enableSuperPickAxe();

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

@@ -24,7 +24,6 @@ import com.boydti.fawe.object.brush.InspectBrush;
 import com.sk89q.minecraft.util.commands.Command;
 import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandPermissions;
-import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
@@ -67,7 +66,7 @@ public class ToolCommands {
             max = 0
     )
     @CommandPermissions("worldedit.tool.info")
-    public void info(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void info(Player player, LocalSession session) throws WorldEditException {
         session.setTool(new QueryTool(), player);
         BaseItemStack itemStack = player.getItemInHand(HandSide.MAIN_HAND);
         BBC.TOOL_INFO.send(player, itemStack.getType().getName());
@@ -123,7 +122,7 @@ public class ToolCommands {
             max = 0
     )
     @CommandPermissions("worldedit.tool.data-cycler")
-    public void cycler(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void cycler(Player player, LocalSession session) throws WorldEditException {
 
         session.setTool(new BlockDataCyler(), player);
         BBC.TOOL_CYCLER.send(player, player.getItemInHand(HandSide.MAIN_HAND).getType().getName());

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

@@ -22,7 +22,9 @@ package com.sk89q.worldedit.command;
 import com.sk89q.minecraft.util.commands.Command;
 import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandPermissions;
-import com.sk89q.worldedit.*;
+import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.pattern.Pattern;
@@ -48,7 +50,7 @@ public class ToolUtilCommands {
         max = 1
     )
     @CommandPermissions("worldedit.superpickaxe")
-    public void togglePickaxe(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void togglePickaxe(Player player, LocalSession session, CommandContext args) throws WorldEditException {
 
         String newState = args.getString(0, null);
         if (session.hasSuperPickAxe()) {
@@ -78,7 +80,7 @@ public class ToolUtilCommands {
         max = -1
     )
     @CommandPermissions("worldedit.brush.options.mask")
-    public void mask(Player player, LocalSession session, EditSession editSession, @Optional Mask mask) throws WorldEditException {
+    public void mask(Player player, LocalSession session, @Optional Mask mask) throws WorldEditException {
         if (mask == null) {
             session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType()).setMask(null);
             player.print("Brush mask disabled.");
@@ -96,7 +98,7 @@ public class ToolUtilCommands {
         max = 1
     )
     @CommandPermissions("worldedit.brush.options.material")
-    public void material(Player player, LocalSession session, EditSession editSession, Pattern pattern) throws WorldEditException {
+    public void material(Player player, LocalSession session, Pattern pattern) throws WorldEditException {
         session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType()).setFill(pattern);
         player.print("Brush material set.");
     }
@@ -109,7 +111,7 @@ public class ToolUtilCommands {
             max = 1
         )
     @CommandPermissions("worldedit.brush.options.range")
-    public void range(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
+    public void range(Player player, LocalSession session, CommandContext args) throws WorldEditException {
         int range = args.getInteger(0);
         session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType()).setRange(range);
         player.print("Brush range set.");
@@ -123,7 +125,9 @@ public class ToolUtilCommands {
         max = 1
     )
     @CommandPermissions("worldedit.brush.options.size")
-    public void size(Player player, LocalSession session, EditSession editSession, Expression radius) throws WorldEditException {
+    public void size(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+
+        int radius = args.getInteger(0);
         we.checkMaxBrushRadius(radius);
         session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType()).setSize(radius);
         player.print("Brush size set.");

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

@@ -77,8 +77,12 @@ import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.CylinderRegion;
 import com.sk89q.worldedit.regions.Region;
-import com.sk89q.worldedit.util.command.*;
 import com.sk89q.worldedit.util.command.binding.Range;
+import com.sk89q.worldedit.session.SessionOwner;
+import com.sk89q.worldedit.util.command.CommandCallable;
+import com.sk89q.worldedit.util.command.CommandMapping;
+import com.sk89q.worldedit.util.command.Dispatcher;
+import com.sk89q.worldedit.util.command.PrimaryAliasComparator;
 import com.sk89q.worldedit.util.command.binding.Text;
 import com.sk89q.worldedit.util.command.parametric.Optional;
 import com.sk89q.worldedit.util.command.parametric.ParameterData;
@@ -283,28 +287,6 @@ public class UtilityCommands extends MethodCommands {
         if (depth == -1) depth = Integer.MAX_VALUE;
         int affected = editSession.fillXZ(pos, pattern, radius, (int) depth, true);
         player.print(BBC.getPrefix() + affected + " block(s) have been created.");
-//=======
-//    public void fillr(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
-//
-//        ParserContext context = new ParserContext();
-//        context.setActor(player);
-//        context.setWorld(player.getWorld());
-//        context.setSession(session);
-//        Pattern pattern = we.getPatternFactory().parseFromInput(args.getString(0), context);
-//
-//        double radius = Math.max(1, args.getDouble(1));
-//        we.checkMaxRadius(radius);
-//        int depth = args.argsLength() > 2 ? Math.max(1, args.getInteger(2)) : Integer.MAX_VALUE;
-//
-//        BlockVector3 pos = session.getPlacementPosition(player);
-//        int affected = 0;
-//        if (pattern instanceof BlockPattern) {
-//            affected = editSession.fillXZ(pos, ((BlockPattern) pattern).getBlock(), radius, depth, true);
-//        } else {
-//            affected = editSession.fillXZ(pos, pattern, radius, depth, true);
-//        }
-//        player.print(affected + " block(s) have been created.");
-//>>>>>>> 399e0ad5... Refactor vector system to be cleaner
     }
 
     @Command(
@@ -435,8 +417,8 @@ public class UtilityCommands extends MethodCommands {
     @CommandPermissions("worldedit.snow")
     @Logging(PLACEMENT)
     public void snow(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
-
         double size = args.argsLength() > 0 ? Math.max(1, args.getDouble(0)) : 10;
+        we.checkMaxRadius(size);
 
         int affected = editSession.simulateSnow(session.getPlacementPosition(player), size);
         player.print(BBC.getPrefix() + affected + " surfaces covered. Let it snow~");
@@ -452,8 +434,8 @@ public class UtilityCommands extends MethodCommands {
     @CommandPermissions("worldedit.thaw")
     @Logging(PLACEMENT)
     public void thaw(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
-
         double size = args.argsLength() > 0 ? Math.max(1, args.getDouble(0)) : 10;
+        we.checkMaxRadius(size);
 
         int affected = editSession.thaw(session.getPlacementPosition(player), size);
         player.print(BBC.getPrefix() + affected + " surfaces thawed.");
@@ -463,6 +445,7 @@ public class UtilityCommands extends MethodCommands {
             aliases = {"/green", "green"},
             usage = "[radius]",
             desc = "Greens the area",
+            help = "Converts dirt to grass blocks. -f also converts coarse dirt.",
             flags = "f",
             min = 0,
             max = 1
@@ -470,8 +453,8 @@ public class UtilityCommands extends MethodCommands {
     @CommandPermissions("worldedit.green")
     @Logging(PLACEMENT)
     public void green(Player player, LocalSession session, EditSession editSession, CommandContext args) throws WorldEditException {
-
         final double size = args.argsLength() > 0 ? Math.max(1, args.getDouble(0)) : 10;
+        we.checkMaxRadius(size);
         final boolean onlyNormalDirt = !args.hasFlag('f');
 
         final int affected = editSession.green(session.getPlacementPosition(player), size);
@@ -559,11 +542,7 @@ public class UtilityCommands extends MethodCommands {
             List<? extends Entity> entities;
             if (radius >= 0) {
                 CylinderRegion region = CylinderRegion.createRadius(editSession, center, radius);
-                entities = editSession.getEntities(region);
             } else {
-                entities = editSession.getEntities();
-            }
-            visitors.add(new EntityVisitor(entities.iterator(), flags.createFunction()));
         } else {
             Platform platform = worldEdit.getPlatformManager().queryCapability(Capability.WORLD_EDITING);
             for (World world : platform.getWorlds()) {
@@ -582,7 +561,7 @@ public class UtilityCommands extends MethodCommands {
 
         if (editSession != null) {
             session.remember(editSession);
-            editSession.flushQueue();
+            editSession.flushSession();
         }
     }
 
@@ -642,7 +621,7 @@ public class UtilityCommands extends MethodCommands {
 
         if (editSession != null) {
             session.remember(editSession);
-            editSession.flushQueue();
+            editSession.flushSession();
         }
     }
 
@@ -674,10 +653,10 @@ public class UtilityCommands extends MethodCommands {
             actor.print(BBC.getPrefix() + "= " + result);
         } catch (EvaluationException e) {
             actor.printError(String.format(
-                    "'%s' could not be parsed as a valid expression", input));
+                    "'%s' could not be evaluated (error: %s)", input, e.getMessage()));
         } catch (ExpressionException e) {
             actor.printError(String.format(
-                    "'%s' could not be evaluated (error: %s)", input, e.getMessage()));
+                    "'%s' could not be parsed as a valid expression", input));
         }
     }
 

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

@@ -124,6 +124,31 @@ public class WorldEditCommands {
         actor.print(BBC.getPrefix() + "Reloaded WorldEdit " + we.getVersion() + " and FAWE (" + Fawe.get().getVersion() + ")");
     }
 
+    @Command(aliases = {"report"}, desc = "Writes a report on WorldEdit", flags = "p", max = 0)
+    @CommandPermissions({"worldedit.report"})
+    public void report(Actor actor, CommandContext args) throws WorldEditException {
+        ReportList report = new ReportList("Report");
+        report.add(new SystemInfoReport());
+        report.add(new ConfigReport());
+        String result = report.toString();
+
+        try {
+            File dest = new File(we.getWorkingDirectoryFile(we.getConfiguration().saveDir), "report.txt");
+            Files.write(result, dest, Charset.forName("UTF-8"));
+            actor.print("WorldEdit report written to " + dest.getAbsolutePath());
+        } catch (IOException e) {
+            actor.printError("Failed to write report: " + e.getMessage());
+        }
+
+        if (args.hasFlag('p')) {
+            actor.checkPermission("worldedit.report.pastebin");
+            ActorCallbackPaste.pastebin(
+                    we.getSupervisor(), actor, result, "WorldEdit report: %s.report",
+                    WorldEdit.getInstance().getPlatformManager().getCommandManager().getExceptionConverter()
+            );
+        }
+    }
+
     @Command(
             aliases = {"update"},
             usage = "",
@@ -252,7 +277,7 @@ public class WorldEditCommands {
             min = 0,
             max = 0
     )
-    public void cui(Player player, LocalSession session, CommandContext args) throws WorldEditException {
+    public void cui(Player player, LocalSession session) throws WorldEditException {
         session.setCUISupport(true);
         session.dispatchCUISetup(player);
     }

worldedit-core/src/main/java/com/sk89q/worldedit/command/composition/SelectionCommand.java

@@ -89,12 +89,14 @@ public class SelectionCommand extends SimpleCommand<Operation> {
                 LocalSession session = WorldEdit.getInstance().getSessionManager().get(player);
                 Region selection = session.getSelection(player.getWorld());
                 EditSession editSession = session.createEditSession(player);
-                editSession.enableQueue();
+                editSession.enableStandardMode();
                 locals.put(EditSession.class, editSession);
                 session.tellVersion(player);
                 EditContext editContext = new EditContext();
                 editContext.setDestination(locals.get(EditSession.class));
                 editContext.setRegion(selection);
+                editContext.setSession(session);
+
                 Operation operation = operationFactory.createFromContext(editContext);
                 // Shortcut
                 if (selection instanceof CuboidRegion && editSession.hasFastMode() && operation instanceof RegionVisitor) {

worldedit-core/src/main/java/com/sk89q/worldedit/command/composition/ShapedBrushCommand.java

@@ -76,7 +76,8 @@ public class ShapedBrushCommand extends SimpleCommand<Object> {
             WorldEdit.getInstance().checkMaxBrushRadius(radius);
             BrushTool tool = session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType());
             tool.setSize(radius);
-            tool.setBrush(new OperationFactoryBrush(factory, regionFactory), permission);
+            tool.setFill(null);
+            tool.setBrush(new OperationFactoryBrush(factory, regionFactory, session), permission);
         } catch (MaxBrushRadiusException | InvalidToolBindException e) {
             WorldEdit.getInstance().getPlatformManager().getCommandManager().getExceptionConverter().convert(e);
         }

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

@@ -6,6 +6,9 @@ import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Platform;
+import com.sk89q.worldedit.MaxChangedBlocksException;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 
@@ -40,7 +43,7 @@ public class AreaPickaxe implements BlockTool {
             return true;
         }
 
-        EditSession editSession = session.createEditSession(player);
+        try (EditSession editSession = session.createEditSession(player)) {
             editSession.getSurvivalExtent().setToolUse(config.superPickaxeManyDrop);
 
         for (int x = ox - range; x <= ox + range; ++x) {
@@ -48,25 +51,13 @@ public class AreaPickaxe implements BlockTool {
                 for (int y = oy + range; y >= oy - range; --y) {
                     if (initialType.equals(editSession.getLazyBlock(x, y, z))) {
                         continue;
-//        try (EditSession editSession = session.createEditSession(player)) {
-//            editSession.getSurvivalExtent().setToolUse(config.superPickaxeManyDrop);
-//
-//            try {
-//                for (int x = ox - range; x <= ox + range; ++x) {
-//                    for (int y = oy - range; y <= oy + range; ++y) {
-//                        for (int z = oz - range; z <= oz + range; ++z) {
-//                            BlockVector3 pos = new BlockVector3(x, y, z);
-//                            if (editSession.getBlock(pos).getBlockType() != initialType) {
-//                                continue;
-//                            }
-//
-//                            ((World) clicked.getExtent()).queueBlockBreakEffect(server, pos, initialType, clicked.toBlockPoint().distanceSq(pos));
-//
-//                            editSession.setBlock(pos, BlockTypes.AIR.getDefaultState());
-//                        }
                     }
                     editSession.setBlock(x, y, z, BlockTypes.AIR.getDefaultState());
                 }
+            } catch (MaxChangedBlocksException e) {
+                player.printError("Max blocks change limit reached.");
+            } finally {
+                session.remember(editSession);
             }
         }
         editSession.flushQueue();

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

@@ -25,13 +25,15 @@ import com.sk89q.worldedit.world.block.BlockType;
 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;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
+import com.sk89q.worldedit.function.pattern.BlockPattern;
+import com.sk89q.worldedit.world.block.BlockState;
 
 /**
- * A mode that replaces one block.
  */
 public class BlockReplacer implements DoubleActionBlockTool {
 
@@ -58,7 +60,6 @@ public class BlockReplacer implements DoubleActionBlockTool {
             if (bag != null) {
                 bag.flushChanges();
             }
-            session.remember(editSession);
         }
 
         return true;

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

@@ -472,14 +472,6 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
                 MaskIntersection newMask = new MaskIntersection(existingMask);
                 newMask.add(mask);
                 editSession.setMask(newMask);
-//=======
-//            try {
-//                brush.build(editSession, target.toBlockPoint(), material, size);
-//            } catch (MaxChangedBlocksException e) {
-//                player.printError("Max blocks change limit reached.");
-//            } finally {
-//                session.remember(editSession);
-//>>>>>>> 399e0ad5... Refactor vector system to be cleaner
             }
         }
         Mask sourceMask = current.getSourceMask();

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

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldedit.command.tool;
 
+import com.boydti.fawe.object.collection.BlockVectorSet;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
@@ -75,80 +76,26 @@ public class FloatingTreeRemover implements BlockTool {
             player.printError("That's not a tree.");
             return true;
         }
-        final EditSession editSession = session.createEditSession(player);
-        try /*(EditSession editSession = session.createEditSession(player))*/ {
-                final Set<BlockVector3> blockSet = bfs(world, clicked.toBlockPoint());
-                if (blockSet == null) {
-                    player.printError("That's not a floating tree.");
-                    return true;
-                }
 
-                for (BlockVector3 blockVector : blockSet) {
+        try (EditSession editSession = session.createEditSession(player)) {
-                    final BlockState otherState = editSession.getBlock(blockVector);
+            try {
-                    if (isTreeBlock(otherState.getBlockType())) {
+                Pattern replace = BlockTypes.AIR;
-                        editSession.setBlock(blockVector, BlockTypes.AIR.getDefaultState());
+                RecursiveVisitor visitor = new RecursiveVisitor(new BlockMask(editSession, logs, leaves), replace, 64, editSession);
-                    }
+                visitor.visit(pos);
-                }
+                Operations.completeBlindly(visitor);
-        } catch (MaxChangedBlocksException e) {
-            player.printError("Max blocks change limit reached.");
             } finally {
                 session.remember(editSession);
             }
+        }
 
         return true;
     }
 
     private BlockVector3[] recurseDirections = {
-            Direction.NORTH.toBlockVector(),
             Direction.EAST.toBlockVector(),
             Direction.SOUTH.toBlockVector(),
             Direction.WEST.toBlockVector(),
             Direction.UP.toBlockVector(),
             Direction.DOWN.toBlockVector(),
     };
-
-    /**
-     * Helper method.
-     *
-     * @param world the world that contains the tree
-     * @param origin any point contained in the floating tree
-     * @return a set containing all blocks in the tree/shroom or null if this is not a floating tree/shroom.
-     */
-    private Set<BlockVector3> bfs(World world, BlockVector3 origin) throws MaxChangedBlocksException {
-        final Set<BlockVector3> visited = new HashSet<>();
-        final LinkedList<BlockVector3> queue = new LinkedList<>();
-
-        queue.addLast(origin);
-        visited.add(origin);
-
-        while (!queue.isEmpty()) {
-            final BlockVector3 current = queue.removeFirst();
-            for (BlockVector3 recurseDirection : recurseDirections) {
-                final BlockVector3 next = current.add(recurseDirection);
-                if (origin.distanceSq(next) > rangeSq) {
-                    // Maximum range exceeded => stop walking
-                    continue;
-                }
-
-                if (visited.add(next)) {
-                    BlockState state = world.getBlock(next);
-                    if (state.getBlockType().getMaterial().isAir() || state.getBlockType() == BlockTypes.SNOW) {
-                        continue;
-                    }
-                    if (isTreeBlock(state.getBlockType())) {
-                        queue.addLast(next);
-                    } else {
-                        // we hit something solid - evaluate where we came from
-                        final BlockType currentType = world.getBlock(current).getBlockType();
-                        if (!BlockCategories.LEAVES.contains(currentType) && currentType != BlockTypes.VINE) {
-                            // log/shroom touching a wall/the ground => this is not a floating tree, bail out
-                            return null;
-                        }
-                    }
-                }
-            }
-        }
-
-        return visited;
-    }
 }

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

@@ -69,17 +69,16 @@ public class FloodFillTool implements BlockTool {
             return true;
         }
 
-        EditSession editSession = session.createEditSession(player);
+        try (EditSession editSession = session.createEditSession(player)) {
             try {
+                TODO fillDirection (but replace)
                 recurse(editSession, origin, origin, range, initialType, new HashSet<>());
             } catch (MaxChangedBlocksException e) {
                 player.printError("Max blocks change limit reached.");
             } finally {
                 session.remember(editSession);
             }
-
+        }
-        editSession.flushQueue();
-        session.remember(editSession);
         return true;
     }
 

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

@@ -55,10 +55,8 @@ public class LongRangeBuildTool extends BrushTool implements DoubleActionTraceTo
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session) {
         Location pos = getTargetFace(player);
         if (pos == null) return false;
-        EditSession eS = session.createEditSession(player);
+        try (EditSession eS = session.createEditSession(player)) {
-        try {
+            BlockVector3 blockPoint = pos.toVector().toBlockPoint();
-//            eS.disableBuffering();
-            BlockVector3 blockPoint = pos.toBlockPoint();
             BaseBlock applied = secondary.apply(blockPoint);
             if (applied.getBlockType().getMaterial().isAir()) {
                 eS.setBlock(blockPoint, secondary);
@@ -74,12 +72,7 @@ public class LongRangeBuildTool extends BrushTool implements DoubleActionTraceTo
 
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session) {
-        Location pos = getTargetFace(player);
+        try (EditSession eS = session.createEditSession(player)) {
-        if (pos == null) return false;
-        EditSession eS = session.createEditSession(player);
-
-        try {
-//            eS.disableBuffering();
             BlockVector3 blockPoint = pos.toBlockPoint();
             BaseBlock applied = primary.apply(blockPoint);
             if (applied.getBlockType().getMaterial().isAir()) {

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

@@ -53,7 +53,6 @@ public class RecursivePickaxe implements BlockTool {
 
         editSession.getSurvivalExtent().setToolUse(config.superPickaxeManyDrop);
 
-//<<<<<<< HEAD
         final int radius = (int) range;
         final BlockReplace replace = new BlockReplace(editSession, (editSession.nullBlock));
         editSession.setMask((Mask) null);
@@ -63,51 +62,6 @@ public class RecursivePickaxe implements BlockTool {
 
         editSession.flushQueue();
         session.remember(editSession);
-//=======
-//            try {
-//                recurse(server, editSession, world, clicked.toBlockPoint(),
-//                        clicked.toBlockPoint(), range, initialType, new HashSet<>());
-//            } catch (MaxChangedBlocksException e) {
-//                player.printError("Max blocks change limit reached.");
-//            } finally {
-//                session.remember(editSession);
-//            }
-//        }
-//>>>>>>> 399e0ad5... Refactor vector system to be cleaner
-
         return true;
     }
-
-//    private static void recurse(Platform server, EditSession editSession, World world, BlockVector3 pos,
-//            BlockVector3 origin, double size, BlockType initialType, Set<BlockVector3> visited) throws MaxChangedBlocksException {
-//
-//        final double distanceSq = origin.distanceSq(pos);
-//        if (distanceSq > size*size || visited.contains(pos)) {
-//            return;
-//        }
-//
-//        visited.add(pos);
-//
-//        if (editSession.getBlock(pos).getBlockType() != initialType) {
-//            return;
-//        }
-//
-//        world.queueBlockBreakEffect(server, pos, initialType, distanceSq);
-//
-//        editSession.setBlock(pos, BlockTypes.AIR.getDefaultState());
-//
-//        recurse(server, editSession, world, pos.add(1, 0, 0),
-//                origin, size, initialType, visited);
-//        recurse(server, editSession, world, pos.add(-1, 0, 0),
-//                origin, size, initialType, visited);
-//        recurse(server, editSession, world, pos.add(0, 0, 1),
-//                origin, size, initialType, visited);
-//        recurse(server, editSession, world, pos.add(0, 0, -1),
-//                origin, size, initialType, visited);
-//        recurse(server, editSession, world, pos.add(0, 1, 0),
-//                origin, size, initialType, visited);
-//        recurse(server, editSession, world, pos.add(0, -1, 0),
-//                origin, size, initialType, visited);
-//    }
-
 }

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

@@ -50,24 +50,12 @@ public class SinglePickaxe implements BlockTool {
                 && !player.canDestroyBedrock()) {
             return true;
         }
-        final EditSession editSession = session.createEditSession(player);
+
-        try {
+        try (EditSession editSession = session.createEditSession(player)) {
             editSession.getSurvivalExtent().setToolUse(config.superPickaxeDrop);
             editSession.setBlock(blockPoint, BlockTypes.AIR.getDefaultState());
-        } catch (MaxChangedBlocksException e) {
-            player.printError("Max blocks change limit reached.");
-        }
-
-        try {
-            if (editSession.setBlock(clicked.getBlockX(), clicked.getBlockY(), clicked.getBlockZ(), EditSession.nullBlock)) {
-                // TODO FIXME play effect
-//                world.playEffect(clicked, 2001, blockType);
-            }
-        } finally {
-            editSession.flushQueue();
             session.remember(editSession);
         }
-
         return true;
     }
 

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

@@ -48,10 +48,9 @@ public class TreePlanter implements BlockTool {
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
 
-        EditSession editSession = session.createEditSession(player);
+        try (EditSession editSession = session.createEditSession(player)) {
-
-        try {
             boolean successful = false;
+
             for (int i = 0; i < 10; i++) {
                 if (treeType.generate(editSession, clicked.add(0, 1, 0).toBlockPoint())) {
                     successful = true;

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

@@ -21,10 +21,10 @@ package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.world.block.BlockTypes;
 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;
 
 public class CylinderBrush implements Brush {
 

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

@@ -21,12 +21,14 @@ package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-
-import com.sk89q.worldedit.function.mask.Mask;
-import com.sk89q.worldedit.function.mask.Masks;
 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.ArrayList;
+import java.util.Collections;
+import java.util.List;
 
 public class GravityBrush implements Brush {
 

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

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.math.BlockVector3;
 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;
 
 public class HollowCylinderBrush implements Brush {

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

@@ -24,6 +24,7 @@ import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.math.BlockVector3;
 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;
 
 public class HollowSphereBrush implements Brush {

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

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.function.Contextual;
 import com.sk89q.worldedit.function.EditContext;
@@ -33,10 +34,16 @@ public class OperationFactoryBrush implements Brush {
 
     private final Contextual<? extends Operation> operationFactory;
     private final RegionFactory regionFactory;
+    private final LocalSession session;
 
     public OperationFactoryBrush(Contextual<? extends Operation> operationFactory, RegionFactory regionFactory) {
+        this(operationFactory, regionFactory, null);
+    }
+
+    public OperationFactoryBrush(Contextual<? extends Operation> operationFactory, RegionFactory regionFactory, LocalSession session) {
         this.operationFactory = operationFactory;
         this.regionFactory = regionFactory;
+        this.session = session;
     }
 
     @Override
@@ -45,6 +52,7 @@ public class OperationFactoryBrush implements Brush {
         context.setDestination(editSession);
         context.setRegion(regionFactory.createCenteredAt(position, size));
         context.setFill(pattern);
+        context.setSession(session);
         Operation operation = operationFactory.createFromContext(context);
         Operations.completeLegacy(operation);
     }

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

@@ -21,9 +21,10 @@ package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
-import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.convolution.GaussianKernel;
 import com.sk89q.worldedit.math.convolution.HeightMap;
 import com.sk89q.worldedit.math.convolution.HeightMapFilter;
@@ -31,12 +32,20 @@ import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 
+import javax.annotation.Nullable;
+
 public class SmoothBrush implements Brush {
 
+    private final Mask mask;
     private int iterations;
 
     public SmoothBrush(int iterations) {
+        this(iterations, null);
+    }
+
+    public SmoothBrush(int iterations, @Nullable Mask mask) {
         this.iterations = iterations;
+        this.mask = mask;
     }
 
     @Override
@@ -45,7 +54,7 @@ public class SmoothBrush implements Brush {
         Location min = new Location(editSession.getWorld(), posDouble.subtract(size, size, size));
         BlockVector3 max = posDouble.add(size, size + 10, size).toBlockPoint();
         Region region = new CuboidRegion(editSession.getWorld(), min.toBlockPoint(), max);
-        HeightMap heightMap = new HeightMap(editSession, region);
+        HeightMap heightMap = new HeightMap(editSession, region, mask);
         HeightMapFilter filter = new HeightMapFilter(new GaussianKernel(5, 1.0));
         heightMap.applyFilter(filter, iterations);
     }

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

@@ -21,9 +21,9 @@ package com.sk89q.worldedit.command.tool.brush;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
-import com.sk89q.worldedit.math.BlockVector3;
 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;
 
 public class SphereBrush implements Brush {

worldedit-core/src/main/java/com/sk89q/worldedit/event/extent/EditSessionEvent.java

@@ -20,9 +20,6 @@
 package com.sk89q.worldedit.event.extent;
 
 import com.sk89q.worldedit.EditSession;
-
-import com.sk89q.worldedit.world.block.BlockState;
-import com.sk89q.worldedit.event.Cancellable;
 import com.sk89q.worldedit.event.Event;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.Extent;

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

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.extension.factory;
 
 import com.sk89q.util.StringUtil;
 import com.sk89q.worldedit.WorldEdit;
-import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.extension.factory.parser.DefaultBlockParser;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;

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

@@ -55,14 +55,7 @@ public final class MaskFactory extends AbstractFactory<Mask> {
      */
     public MaskFactory(WorldEdit worldEdit) {
         super(worldEdit);
-
-        register(new ExistingMaskParser(worldEdit));
-        register(new SolidMaskParser(worldEdit));
-        register(new LazyRegionMaskParser(worldEdit));
-        register(new RegionMaskParser(worldEdit));
         register(new BlockCategoryMaskParser(worldEdit));
-        register(new NoiseMaskParser(worldEdit));
-        register(new NegateMaskParser(worldEdit));
         register(new DefaultMaskParser(worldEdit));
     }
 
@@ -90,7 +83,7 @@ public final class MaskFactory extends AbstractFactory<Mask> {
             case 1:
                 return masks.get(0);
             default:
-                return new MaskIntersection(masks);
+                return new MaskIntersection(masks).optimize();
         }
     }
 

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

@@ -22,9 +22,10 @@ package com.sk89q.worldedit.extension.factory;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.factory.parser.pattern.BlockCategoryPatternParser;
 import com.sk89q.worldedit.extension.factory.parser.pattern.ClipboardPatternParser;
-import com.sk89q.worldedit.extension.factory.parser.pattern.DefaultPatternParser;
 import com.sk89q.worldedit.extension.factory.parser.pattern.RandomPatternParser;
+import com.sk89q.worldedit.extension.factory.parser.pattern.RandomStatePatternParser;
 import com.sk89q.worldedit.extension.factory.parser.pattern.SingleBlockPatternParser;
+import com.sk89q.worldedit.extension.factory.parser.pattern.TypeOrStateApplyingPatternParser;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.registry.AbstractFactory;
 
@@ -44,10 +45,6 @@ public final class PatternFactory extends AbstractFactory<Pattern> {
      */
     public PatternFactory(WorldEdit worldEdit) {
         super(worldEdit);
-
-//        register(new ClipboardPatternParser(worldEdit));
-//        register(new SingleBlockPatternParser(worldEdit));
-//        register(new RandomPatternParser(worldEdit));
         register(new BlockCategoryPatternParser(worldEdit));
         register(new DefaultPatternParser(worldEdit));
     }

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

@@ -24,12 +24,6 @@ import com.boydti.fawe.jnbt.JSON2NBT;
 import com.boydti.fawe.jnbt.NBTException;
 import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.StringMan;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.worldedit.*;
-
-import com.sk89q.worldedit.extension.platform.Platform;
-import com.sk89q.worldedit.world.block.BlockState;
-import com.sk89q.worldedit.blocks.BaseItem;
 import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.NotABlockException;
 import com.sk89q.worldedit.WorldEdit;

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

@@ -0,0 +1,65 @@
+/*
+ * 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.extension.factory.parser.mask;
+
+import com.google.common.base.Splitter;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.extension.platform.Capability;
+import com.sk89q.worldedit.function.mask.BiomeMask2D;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.Masks;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.session.request.RequestExtent;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.biome.Biomes;
+import com.sk89q.worldedit.world.registry.BiomeRegistry;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
+public class BiomeMaskParser extends InputParser<Mask> {
+
+    public BiomeMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!input.startsWith("$")) {
+            return null;
+        }
+
+        Set<BiomeType> biomes = new HashSet<>();
+        BiomeRegistry biomeRegistry = worldEdit.getPlatformManager().queryCapability(Capability.GAME_HOOKS).getRegistries().getBiomeRegistry();
+        Collection<BiomeType> knownBiomes = BiomeType.REGISTRY.values();
+        for (String biomeName : Splitter.on(",").split(input.substring(1))) {
+            BiomeType biome = Biomes.findBiomeByName(knownBiomes, biomeName, biomeRegistry);
+            if (biome == null) {
+                throw new InputParseException("Unknown biome '" + biomeName + '\'');
+            }
+            biomes.add(biome);
+        }
+
+        return Masks.asMask(new BiomeMask2D(new RequestExtent(), biomes));
+    }
+}

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

@@ -22,12 +22,10 @@ package com.sk89q.worldedit.extension.factory.parser.mask;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
-import com.sk89q.worldedit.extent.Extent;
 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.Request;
+import com.sk89q.worldedit.session.request.RequestExtent;
-import com.sk89q.worldedit.world.block.BlockCategories;
 import com.sk89q.worldedit.world.block.BlockCategory;
 
 public class BlockCategoryMaskParser extends InputParser<Mask> {
@@ -38,18 +36,16 @@ public class BlockCategoryMaskParser extends InputParser<Mask> {
 
     @Override
     public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
-        if (input.startsWith("##")) {
+        if (!input.startsWith("##")) {
-            Extent extent = Request.request().getEditSession();
+            return null;
+        }
 
         // This means it's a tag mask.
-            BlockCategory category = BlockCategories.get(input.substring(2).toLowerCase());
+        BlockCategory category = BlockCategory.REGISTRY.get(input.substring(2).toLowerCase());
         if (category == null) {
             throw new InputParseException("Unrecognised tag '" + input.substring(2) + '\'');
         } else {
-                return new BlockCategoryMask(extent, category);
+            return new BlockCategoryMask(new RequestExtent(), category);
         }
     }
-
-        return null;
-    }
 }

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

@@ -0,0 +1,53 @@
+/*
+ * 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.extension.factory.parser.mask;
+
+import com.google.common.base.Splitter;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.BlockStateMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.session.request.RequestExtent;
+
+public class BlockStateMaskParser extends InputParser<Mask> {
+
+    public BlockStateMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!(input.startsWith("^[") || input.startsWith("^=[")) || !input.endsWith("]")) {
+            return null;
+        }
+
+        boolean strict = input.charAt(1) == '=';
+        String states = input.substring(2 + (strict ? 1 : 0), input.length() - 1);
+        try {
+            return new BlockStateMask(new RequestExtent(),
+                    Splitter.on(',').omitEmptyStrings().trimResults().withKeyValueSeparator('=').split(states),
+                    strict);
+        } catch (Exception e) {
+            throw new InputParseException("Invalid states.", e);
+        }
+    }
+}

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

@@ -0,0 +1,59 @@
+/*
+ * 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.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.NoMatchException;
+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;
+
+/**
+ * Parses mask input strings.
+ */
+public class BlocksMaskParser extends InputParser<Mask> {
+
+    public BlocksMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String component, ParserContext context) throws InputParseException {
+        ParserContext tempContext = new ParserContext(context);
+        tempContext.setRestricted(false);
+        tempContext.setPreferringWildcard(true);
+        try {
+            Set<BaseBlock> holders = worldEdit.getBlockFactory().parseFromListInput(component, tempContext);
+            if (holders.isEmpty()) {
+                return null;
+            }
+            return new BlockMask(new RequestExtent(), holders);
+        } catch (NoMatchException e) {
+            return null;
+        }
+    }
+
+}

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

@@ -21,13 +21,11 @@ package com.sk89q.worldedit.extension.factory.parser.mask;
 
 import com.google.common.collect.Lists;
 import com.sk89q.worldedit.WorldEdit;
-import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
-import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.ExistingBlockMask;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.internal.registry.SimpleInputParser;
-import com.sk89q.worldedit.session.request.Request;
+import com.sk89q.worldedit.session.request.RequestExtent;
 
 import java.util.List;
 
@@ -43,9 +41,7 @@ public class ExistingMaskParser extends SimpleInputParser<Mask> {
     }
 
     @Override
-    public Mask parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
+    public Mask parseFromSimpleInput(String input, ParserContext context) {
-        Extent extent = Request.request().getEditSession();
+        return new ExistingBlockMask(new RequestExtent());
-
-        return new ExistingBlockMask(extent);
     }
 }

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

@@ -0,0 +1,65 @@
+/*
+ * 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.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.ExpressionMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.internal.expression.Expression;
+import com.sk89q.worldedit.internal.expression.ExpressionException;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.regions.shape.WorldEditExpressionEnvironment;
+import com.sk89q.worldedit.session.SessionOwner;
+import com.sk89q.worldedit.session.request.Request;
+import com.sk89q.worldedit.session.request.RequestExtent;
+
+import java.util.function.IntSupplier;
+
+public class ExpressionMaskParser extends InputParser<Mask> {
+
+    public ExpressionMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!input.startsWith("=")) {
+            return null;
+        }
+
+        try {
+            Expression exp = Expression.compile(input.substring(1), "x", "y", "z");
+            WorldEditExpressionEnvironment env = new WorldEditExpressionEnvironment(
+                    new RequestExtent(), Vector3.ONE, Vector3.ZERO);
+            exp.setEnvironment(env);
+            if (context.getActor() instanceof SessionOwner) {
+                SessionOwner owner = (SessionOwner) context.getActor();
+                IntSupplier timeout = () -> WorldEdit.getInstance().getSessionManager().get(owner).getTimeout();
+                return new ExpressionMask(exp, timeout);
+            }
+            return new ExpressionMask(exp);
+        } catch (ExpressionException e) {
+            throw new InputParseException("Invalid expression: " + e.getMessage());
+        }
+    }
+}

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

@@ -0,0 +1,56 @@
+/*
+ * 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.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.ExistingBlockMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.MaskIntersection;
+import com.sk89q.worldedit.function.mask.Masks;
+import com.sk89q.worldedit.function.mask.OffsetMask;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.session.request.RequestExtent;
+
+public class OffsetMaskParser extends InputParser<Mask> {
+
+    public OffsetMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        final char firstChar = input.charAt(0);
+        if (firstChar != '>' && firstChar != '<') {
+            return null;
+        }
+
+        Mask submask;
+        if (input.length() > 1) {
+            submask = worldEdit.getMaskFactory().parseFromInput(input.substring(1), context);
+        } else {
+            submask = new ExistingBlockMask(new RequestExtent());
+        }
+        OffsetMask offsetMask = new OffsetMask(submask, BlockVector3.at(0, firstChar == '>' ? -1 : 1, 0));
+        return new MaskIntersection(offsetMask, Masks.negate(submask));
+    }
+}

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

@@ -21,13 +21,11 @@ package com.sk89q.worldedit.extension.factory.parser.mask;
 
 import com.google.common.collect.Lists;
 import com.sk89q.worldedit.WorldEdit;
-import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
-import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.mask.SolidBlockMask;
 import com.sk89q.worldedit.internal.registry.SimpleInputParser;
-import com.sk89q.worldedit.session.request.Request;
+import com.sk89q.worldedit.session.request.RequestExtent;
 
 import java.util.List;
 
@@ -43,9 +41,7 @@ public class SolidMaskParser extends SimpleInputParser<Mask> {
     }
 
     @Override
-    public Mask parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
+    public Mask parseFromSimpleInput(String input, ParserContext context) {
-        Extent extent = Request.request().getEditSession();
+        return new SolidBlockMask(new RequestExtent());
-
-        return new SolidBlockMask(extent);
     }
 }

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

@@ -26,11 +26,11 @@ import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.function.pattern.RandomPattern;
 import com.sk89q.worldedit.internal.registry.InputParser;
-import com.sk89q.worldedit.world.block.BlockCategories;
 import com.sk89q.worldedit.world.block.BlockCategory;
 import com.sk89q.worldedit.world.block.BlockType;
 
 import java.util.List;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 public class BlockCategoryPatternParser extends InputParser<Pattern> {
@@ -49,14 +49,31 @@ public class BlockCategoryPatternParser extends InputParser<Pattern> {
         if (!input.startsWith("##")) {
             return null;
         }
-        BlockCategory category = BlockCategories.get(input.substring(2).toLowerCase());
+        String tag = input.substring(2).toLowerCase();
+        boolean anyState = false;
+        if (tag.startsWith("*")) {
+            tag = tag.substring(1);
+            anyState = true;
+        }
+
+        BlockCategory category = BlockCategory.REGISTRY.get(tag);
         if (category == null) {
-            throw new InputParseException("Unknown block tag: " + input.substring(2));
+            throw new InputParseException("Unknown block tag: " + tag);
         }
         RandomPattern randomPattern = new RandomPattern();
 
-        for (BlockType blockType : category.getAll()) {
+        Set<BlockType> blocks = category.getAll();
-            randomPattern.add(new BlockPattern(blockType.getDefaultState()), 1.0 / category.getAll().size());
+        if (blocks.isEmpty()) {
+            throw new InputParseException("Block tag " + category.getId() + " had no blocks!");
+        }
+
+        if (anyState) {
+            blocks.stream().flatMap(blockType -> blockType.getAllStates().stream()).forEach(state ->
+                randomPattern.add(new BlockPattern(state), 1.0));
+        } else {
+            for (BlockType blockType : blocks) {
+                randomPattern.add(new BlockPattern(blockType.getDefaultState()), 1.0);
+            }
         }
 
         return randomPattern;

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

@@ -19,189 +19,68 @@
 
 package com.sk89q.worldedit.extension.factory.parser.pattern;
 
-import com.boydti.fawe.command.FaweParser;
-import com.boydti.fawe.command.SuggestInputParseException;
-import com.boydti.fawe.config.BBC;
-import com.boydti.fawe.object.random.TrueRandom;
-import com.boydti.fawe.util.StringMan;
-import com.sk89q.minecraft.util.commands.CommandException;
-import com.sk89q.minecraft.util.commands.CommandLocals;
-
 import com.google.common.collect.Lists;
 import com.sk89q.worldedit.EmptyClipboardException;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
-import com.sk89q.worldedit.command.PatternCommands;
 import com.sk89q.worldedit.extension.input.InputParseException;
-import com.sk89q.worldedit.extension.input.NoMatchException;
 import com.sk89q.worldedit.extension.input.ParserContext;
-import com.sk89q.worldedit.extension.platform.Actor;
+import com.sk89q.worldedit.extent.clipboard.Clipboard;
+import com.sk89q.worldedit.function.pattern.ClipboardPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.function.pattern.RandomPattern;
+import com.sk89q.worldedit.internal.registry.InputParser;
-import com.sk89q.worldedit.internal.command.ActorAuthorizer;
+import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.internal.command.WorldEditBinding;
+import com.sk89q.worldedit.session.ClipboardHolder;
-import com.sk89q.worldedit.internal.expression.Expression;
-import com.sk89q.worldedit.internal.expression.ExpressionException;
-import com.sk89q.worldedit.util.command.Dispatcher;
-import com.sk89q.worldedit.util.command.SimpleDispatcher;
-import com.sk89q.worldedit.util.command.parametric.ParametricBuilder;
-import com.sk89q.worldedit.world.block.BlockTypes;
 
-import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
-public class ClipboardPatternParser extends FaweParser<Pattern> {
+public class ClipboardPatternParser extends InputParser<Pattern> {
-    private final Dispatcher dispatcher;
 
     public ClipboardPatternParser(WorldEdit worldEdit) {
         super(worldEdit);
-        this.dispatcher = new SimpleDispatcher();
-        this.register(new PatternCommands(worldEdit));
     }
 
     @Override
-    public Dispatcher getDispatcher() {
+    public List<String> getSuggestions() {
-        return dispatcher;
+        return Lists.newArrayList("#clipboard", "#copy");
-    }
-
-    public void register(Object clazz) {
-        ParametricBuilder builder = new ParametricBuilder();
-        builder.setAuthorizer(new ActorAuthorizer());
-        builder.addBinding(new WorldEditBinding(worldEdit));
-        builder.registerMethodsAsCommands(dispatcher, clazz);
     }
 
     @Override
     public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
-        if (input.isEmpty()) {
+        String[] offsetParts = input.split("@", 2);
-            throw new SuggestInputParseException("No input provided", "", () -> Stream.concat(Stream.of("#", ",", "&"), BlockTypes.getNameSpaces().stream().map(n -> n + ":")).collect(Collectors.toList()));
+        if (!offsetParts[0].equalsIgnoreCase("#clipboard") && !offsetParts[0].equalsIgnoreCase("#copy")) {
+            return null;
         }
-        List<Double> chances = new ArrayList<>();
+        LocalSession session = context.requireSession();
-        List<Pattern> patterns = new ArrayList<>();
+
-        final CommandLocals locals = new CommandLocals();
+        BlockVector3 offset = BlockVector3.ZERO;
-        Actor actor = context != null ? context.getActor() : null;
+        if (offsetParts.length == 2) {
-        if (actor != null) {
+            String coords = offsetParts[1];
-            locals.put(Actor.class, actor);
+            if (coords.length() < 7  // min length of `[x,y,z]`
+                || coords.charAt(0) != '[' || coords.charAt(coords.length() - 1) != ']') {
+                throw new InputParseException("Offset specified with @ but no offset given. Use '#copy@[x,y,z]'.");
             }
-        try {
+            String[] offsetSplit = coords.substring(1, coords.length() - 1).split(",");
-            for (Map.Entry<ParseEntry, List<String>> entry : parse(input)) {
+            if (offsetSplit.length != 3) {
-                ParseEntry pe = entry.getKey();
+                throw new InputParseException("Clipboard offset needs x,y,z coordinates.");
-                final String command = pe.input;
-                String full = pe.full;
-                Pattern pattern = null;
-                double chance = 1;
-                if (command.isEmpty()) {
-                    pattern = parseFromInput(StringMan.join(entry.getValue(), ','), context);
-                } else if (dispatcher.get(command) == null) {
-                    // Legacy patterns
-                    char char0 = command.charAt(0);
-                    boolean charMask = input.length() > 1 && input.charAt(1) != '[';
-                    if (charMask && input.charAt(0) == '=') {
-                        return parseFromInput(char0 + "[" + input.substring(1) + "]", context);
-                    }
-                    if (char0 == '#') {
-                        throw new SuggestInputParseException(new NoMatchException("Unknown pattern: " + full + ", See: //patterns"), full,
-                                () -> {
-                                    if (full.length() == 1) return new ArrayList<>(dispatcher.getPrimaryAliases());
-                                    return dispatcher.getAliases().stream().filter(
-                                            s -> s.startsWith(command.toLowerCase())
-                                    ).collect(Collectors.toList());
             }
+            offset = BlockVector3.at(
+                    Integer.valueOf(offsetSplit[0]),
+                    Integer.valueOf(offsetSplit[1]),
+                    Integer.valueOf(offsetSplit[2])
             );
         }
 
-
+        if (session != null) {
-                    if (charMask) {
-                        switch (char0) {
-                            case '$': {
-                                String value = command.substring(1) + ((entry.getValue().isEmpty()) ? "" : "[" + StringMan.join(entry.getValue(), "][") + "]");
-                                if (value.contains(":")) {
-                                    if (value.charAt(0) == ':') value.replaceFirst(":", "");
-                                    value = value.replaceAll(":", "][");
-                                }
-                                pattern = parseFromInput(char0 + "[" + value + "]", context);
-                                break;
-                            }
-                        }
-                    }
-                    if (pattern == null) {
-                        if (command.startsWith("[")) {
-                            int end = command.lastIndexOf(']');
-                            pattern = parseFromInput(command.substring(1, end == -1 ? command.length() : end), context);
-                        } else {
-                            int percentIndex = command.indexOf('%');
-                            if (percentIndex != -1) {  // Legacy percent pattern
-                                chance = Expression.compile(command.substring(0, percentIndex)).evaluate();
-                                String value = command.substring(percentIndex + 1);
-                                if (!entry.getValue().isEmpty()) {
-                                    if (!value.isEmpty()) value += " ";
-                                    value += StringMan.join(entry.getValue(), " ");
-                                }
-                                pattern = parseFromInput(value, context);
-                            } else { // legacy block pattern
             try {
-                                    pattern = worldEdit.getBlockFactory().parseFromInput(pe.full, context);
+                ClipboardHolder holder = session.getClipboard();
-                                } catch (NoMatchException e) {
+                Clipboard clipboard = holder.getClipboard();
-                                    throw new NoMatchException(e.getMessage() + " See: //patterns");
+                return new ClipboardPattern(clipboard, offset);
-                                }
+            } catch (EmptyClipboardException e) {
-                            }
+                throw new InputParseException("To use #clipboard, please first copy something to your clipboard");
-                        }
             }
         } else {
-                    List<String> args = entry.getValue();
+            throw new InputParseException("No session is available, so no clipboard is available");
-                    String cmdArgs = ((args.isEmpty()) ? "" : " " + StringMan.join(args, " "));
-                    try {
-                        pattern = (Pattern) dispatcher.call(command + cmdArgs, locals, new String[0]);
-                    } catch (SuggestInputParseException rethrow) {
-                        throw rethrow;
-                    } catch (Throwable e) {
-                        throw SuggestInputParseException.of(e, full, () -> {
-                            try {
-                                List<String> suggestions = dispatcher.get(command).getCallable().getSuggestions(cmdArgs, locals);
-                                if (suggestions.size() <= 2) {
-                                    for (int i = 0; i < suggestions.size(); i++) {
-                                        String suggestion = suggestions.get(i);
-                                        if (suggestion.indexOf(' ') != 0) {
-                                            String[] split = suggestion.split(" ");
-                                            suggestion = BBC.color("[" + StringMan.join(split, "][") + "]");
-                                            suggestions.set(i, suggestion);
-                                        }
-                                    }
-                                }
-                                return suggestions;
-                            } catch (CommandException e1) {
-                                throw new InputParseException(e1.getMessage());
-                            } catch (Throwable e2) {
-                                e2.printStackTrace();
-                                throw new InputParseException(e2.getMessage());
-                            }
-                        });
-                    }
-                }
-                if (pattern != null) {
-                    patterns.add(pattern);
-                    chances.add(chance);
-                }
-            }
-        } catch (InputParseException rethrow) {
-            throw rethrow;
-        } catch (Throwable e) {
-            e.printStackTrace();
-            throw new InputParseException(e.getMessage(), e);
-        }
-        if (patterns.isEmpty()) {
-            return null;
-        } else if (patterns.size() == 1) {
-            return patterns.get(0);
-        } else {
-            RandomPattern random = new RandomPattern(new TrueRandom());
-            for (int i = 0; i < patterns.size(); i++) {
-                random.add(patterns.get(i), chances.get(i));
-            }
-            return random;
         }
     }
 }

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

@@ -24,11 +24,11 @@ import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.factory.BlockFactory;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
-import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.function.pattern.RandomPattern;
 import com.sk89q.worldedit.internal.registry.InputParser;
-import com.sk89q.worldedit.world.block.BaseBlock;
+
+import java.util.List;
 
 public class RandomPatternParser extends InputParser<Pattern> {
 
@@ -38,14 +38,16 @@ public class RandomPatternParser extends InputParser<Pattern> {
 
     @Override
     public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
-        BlockFactory blockRegistry = worldEdit.getBlockFactory();
         RandomPattern randomPattern = new RandomPattern();
 
         String[] splits = input.split(",");
-        for (String token : StringUtil.parseListInQuotes(splits, ',', '[', ']')) {
+        List<String> patterns = StringUtil.parseListInQuotes(splits, ',', '[', ']');
-            BaseBlock block;
+        if (patterns.size() == 1) {
-
+            return null; // let a 'single'-pattern parser handle it
+        }
+        for (String token : patterns) {
             double chance;
+            Pattern innerPattern;
 
             // Parse special percentage syntax
             if (token.matches("[0-9]+(\\.[0-9]*)?%.*")) {
@@ -55,14 +57,14 @@ public class RandomPatternParser extends InputParser<Pattern> {
                     throw new InputParseException("Missing the type after the % symbol for '" + input + "'");
                 } else {
                     chance = Double.parseDouble(p[0]);
-                    block = blockRegistry.parseFromInput(p[1], context);
+                    innerPattern = worldEdit.getPatternFactory().parseFromInput(p[1], context);
                 }
             } else {
                 chance = 1;
-                block = blockRegistry.parseFromInput(token, context);
+                innerPattern = worldEdit.getPatternFactory().parseFromInput(token, context);
             }
 
-            randomPattern.add(block, chance);
+            randomPattern.add(innerPattern, chance);
         }
 
         return randomPattern;

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

@@ -0,0 +1,56 @@
+/*
+ * 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.extension.factory.parser.pattern;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.pattern.BlockPattern;
+import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.function.pattern.RandomStatePattern;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.FuzzyBlockState;
+
+public class RandomStatePatternParser extends InputParser<Pattern> {
+    public RandomStatePatternParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!input.startsWith("*")) {
+            return null;
+        }
+
+        boolean wasFuzzy = context.isPreferringWildcard();
+        context.setPreferringWildcard(true);
+        BaseBlock block = worldEdit.getBlockFactory().parseFromInput(input.substring(1), context);
+        context.setPreferringWildcard(wasFuzzy);
+        if (block.getStates().size() == block.getBlockType().getPropertyMap().size()) {
+            // they requested random with *, but didn't leave any states empty - simplify
+            return new BlockPattern(block);
+        } else if (block.toImmutableState() instanceof FuzzyBlockState) {
+            return new RandomStatePattern((FuzzyBlockState) block.toImmutableState());
+        } else {
+            return null; // only should happen if parseLogic changes
+        }
+    }
+}

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

@@ -34,13 +34,7 @@ public class SingleBlockPatternParser extends InputParser<Pattern> {
 
     @Override
     public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
-        String[] items = input.split(",");
+        return new BlockPattern(worldEdit.getBlockFactory().parseFromInput(input, context));
-
-        if (items.length == 1) {
-            return new BlockPattern(worldEdit.getBlockFactory().parseFromInput(items[0], context));
-        } else {
-            return null;
-        }
     }
 
 }

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

@@ -0,0 +1,79 @@
+/*
+ * 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.extension.factory.parser.pattern;
+
+import com.google.common.base.Splitter;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.extent.buffer.ExtentBuffer;
+import com.sk89q.worldedit.function.pattern.ExtentBufferedCompositePattern;
+import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.function.pattern.StateApplyingPattern;
+import com.sk89q.worldedit.function.pattern.TypeApplyingPattern;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.world.block.BlockState;
+
+import java.util.Map;
+import java.util.Set;
+
+
+public class TypeOrStateApplyingPatternParser extends InputParser<Pattern> {
+
+    public TypeOrStateApplyingPatternParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!input.startsWith("^")) {
+            return null;
+        }
+        Extent extent = context.requireExtent();
+        input = input.substring(1);
+
+        String[] parts = input.split("\\[", 2);
+        String type = parts[0];
+
+        if (parts.length == 1) {
+            return new TypeApplyingPattern(extent,
+                    worldEdit.getBlockFactory().parseFromInput(type, context).getBlockType().getDefaultState());
+        } else {
+            // states given
+            if (!parts[1].endsWith("]")) throw new InputParseException("Invalid state format.");
+            Map<String, String> statesToSet = Splitter.on(',')
+                    .omitEmptyStrings().trimResults().withKeyValueSeparator('=')
+                    .split(parts[1].substring(0, parts[1].length() - 1));
+            if (type.isEmpty()) {
+                return new StateApplyingPattern(extent, statesToSet);
+            } else {
+                Extent buffer = new ExtentBuffer(extent);
+                Pattern typeApplier = new TypeApplyingPattern(buffer,
+                        worldEdit.getBlockFactory().parseFromInput(type, context).getBlockType().getDefaultState());
+                Pattern stateApplier = new StateApplyingPattern(buffer, statesToSet);
+                return new ExtentBufferedCompositePattern(buffer, typeApplier, stateApplier);
+            }
+        }
+    }
+
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/AbstractPlayerActor.java

@@ -19,8 +19,8 @@
 
 package com.sk89q.worldedit.extension.platform;
 
+import com.sk89q.worldedit.NotABlockException;
 import com.sk89q.worldedit.WorldEditException;
-import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.internal.cui.CUIEvent;
@@ -31,6 +31,7 @@ import com.sk89q.worldedit.util.HandSide;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.TargetBlock;
 import com.sk89q.worldedit.util.auth.AuthorizationException;
+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;
@@ -118,7 +119,6 @@ public abstract class AbstractPlayerActor implements Actor, Player, Cloneable {
                     final BlockVector3 pos = BlockVector3.at(x, y - 2, z);
                     final BlockStateHolder state = world.getBlock(pos);
                     setPosition(Vector3.at(x + 0.5, y - 2 + BlockTypeUtil.centralTopLimit(state), z + 0.5));
-//                    setPosition(Vector3.at(x + 0.5, y - 2 + 1, z + 0.5));
                 }
 
                 return;

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java

@@ -43,9 +43,10 @@ import com.sk89q.worldedit.command.composition.ApplyCommand;
 import com.sk89q.worldedit.command.composition.DeformCommand;
 import com.sk89q.worldedit.command.composition.PaintCommand;
 import com.sk89q.worldedit.command.composition.ShapedBrushCommand;
-import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.event.platform.CommandEvent;
 import com.sk89q.worldedit.event.platform.CommandSuggestionEvent;
+import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.factory.Deform;
 import com.sk89q.worldedit.function.factory.Deform.Mode;
 import com.sk89q.worldedit.internal.command.*;
@@ -60,6 +61,9 @@ import com.sk89q.worldedit.util.command.parametric.*;
 import com.sk89q.worldedit.util.eventbus.Subscribe;
 import com.sk89q.worldedit.util.logging.DynamicStreamHandler;
 import com.sk89q.worldedit.util.logging.LogFormat;
+import com.sk89q.worldedit.world.World;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
 import java.io.File;
@@ -72,7 +76,6 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Supplier;
 import java.util.logging.FileHandler;
 import java.util.logging.Level;
-import java.util.logging.Logger;
 import java.util.regex.Pattern;
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -86,8 +89,9 @@ import static com.sk89q.worldedit.util.command.composition.LegacyCommandAdapter.
 public final class CommandManager {
 
     public static final Pattern COMMAND_CLEAN_PATTERN = Pattern.compile("^[/]+");
-    private static final Logger log = Logger.getLogger(CommandManager.class.getCanonicalName());
+    private static final Logger log = LoggerFactory.getLogger(CommandManager.class);
-    private static final Logger commandLog = Logger.getLogger(CommandManager.class.getCanonicalName() + ".CommandLog");
+    private static final java.util.logging.Logger commandLog =
+        java.util.logging.Logger.getLogger(CommandManager.class.getCanonicalName() + ".CommandLog");
     private static final Pattern numberFormatExceptionPattern = Pattern.compile("^For input string: \"(.*)\"$");
 
     private final WorldEdit worldEdit;
@@ -297,7 +301,7 @@ public final class CommandManager {
     }
 
     public void register(Platform platform) {
-        log.log(Level.FINE, "Registering commands with " + platform.getClass().getCanonicalName());
+        log.info("Registering commands with " + platform.getClass().getCanonicalName());
         this.platform = null;
 
         try {
@@ -318,12 +322,12 @@ public final class CommandManager {
             File file = new File(config.getWorkingDirectory(), path);
             commandLog.setLevel(Level.ALL);
 
-            log.log(Level.INFO, "Logging WorldEdit commands to " + file.getAbsolutePath());
+            log.info("Logging WorldEdit commands to " + file.getAbsolutePath());
 
             try {
                 dynamicHandler.setHandler(new FileHandler(file.getAbsolutePath(), true));
             } catch (IOException e) {
-                log.log(Level.WARNING, "Could not use command log file " + path + ": " + e.getMessage());
+                log.warn("Could not use command log file " + path + ": " + e.getMessage());
             }
         }
 
@@ -371,6 +375,13 @@ public final class CommandManager {
             actor = FakePlayer.wrap(actor.getName(), actor.getUniqueId(), actor);
         }
         final LocalSession session = worldEdit.getSessionManager().get(actor);
+        Request.request().setSession(session);
+        if (actor instanceof Entity) {
+            Extent extent = ((Entity) actor).getExtent();
+            if (extent instanceof World) {
+                Request.request().setWorld(((World) extent));
+            }
+        }
         LocalConfiguration config = worldEdit.getConfiguration();
         final CommandLocals locals = new CommandLocals();
         final FawePlayer fp = FawePlayer.wrap(actor);
@@ -497,8 +508,8 @@ public final class CommandManager {
                 if (time > 1000) {
                     BBC.ACTION_COMPLETE.send(actor, (time / 1000d));
                 }
-                Request.reset();
             }
+            Request.reset();
         }
         return null;
     }
@@ -552,7 +563,7 @@ public final class CommandManager {
         return dispatcher;
     }
 
-    public static Logger getLogger() {
+    public static java.util.logging.Logger getLogger() {
         return commandLog;
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformManager.java

@@ -28,14 +28,10 @@ import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.wrappers.LocationMaskedPlayerWrapper;
 import com.boydti.fawe.wrappers.PlayerWrapper;
 import com.boydti.fawe.wrappers.WorldWrapper;
-import com.sk89q.worldedit.command.tool.*;
-import static com.google.common.base.Preconditions.checkNotNull;
-
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.command.tool.BlockTool;
-import com.sk89q.worldedit.command.tool.DoubleActionBlockTool;
 import com.sk89q.worldedit.command.tool.DoubleActionTraceTool;
 import com.sk89q.worldedit.command.tool.Tool;
 import com.sk89q.worldedit.command.tool.TraceTool;
@@ -43,31 +39,29 @@ import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.event.platform.*;
 import com.sk89q.worldedit.extension.platform.permission.ActorSelectorLimits;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.regions.RegionSelector;
 import com.sk89q.worldedit.session.request.Request;
-import com.sk89q.worldedit.util.HandSide;
-import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.eventbus.Subscribe;
-import com.sk89q.worldedit.world.World;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
-import java.util.*;
+import java.util.ArrayList;
-import java.util.Map.Entry;
+import java.util.EnumMap;
-import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.Iterator;
-import java.util.logging.Level;
+import java.util.List;
-import java.util.logging.Logger;
+import java.util.Map;
-
 import static com.google.common.base.Preconditions.checkNotNull;
 
 /**
  * Manages registered {@link Platform}s for WorldEdit. Platforms are
  * implementations of WorldEdit.
- * <p>
  * <p>This class is thread-safe.</p>
  */
 public class PlatformManager {
 
-    private static final Logger logger = Logger.getLogger(PlatformManager.class.getCanonicalName());
+    private static final Logger logger = LoggerFactory.getLogger(PlatformManager.class);
 
     private final WorldEdit worldEdit;
     private final CommandManager commandManager;
@@ -99,7 +93,7 @@ public class PlatformManager {
     public synchronized void register(Platform platform) {
         checkNotNull(platform);
 
-        logger.log(Level.FINE, "Got request to register " + platform.getClass() + " with WorldEdit [" + super.toString() + "]");
+        logger.info("Got request to register " + platform.getClass() + " with WorldEdit [" + super.toString() + "]");
 
         // Just add the platform to the list of platforms: we'll pick favorites
         // once all the platforms have been loaded
@@ -108,7 +102,7 @@ public class PlatformManager {
         // Make sure that versions are in sync
         if (firstSeenVersion != null) {
             if (!firstSeenVersion.equals(platform.getVersion())) {
-                logger.log(Level.WARNING, "Multiple ports of WorldEdit are installed but they report different versions ({0} and {1}). " +
+                logger.warn("Multiple ports of WorldEdit are installed but they report different versions ({0} and {1}). " +
                                 "If these two versions are truly different, then you may run into unexpected crashes and errors.",
                         new Object[]{firstSeenVersion, platform.getVersion()});
             }
@@ -131,7 +125,7 @@ public class PlatformManager {
         boolean removed = platforms.remove(platform);
 
         if (removed) {
-            logger.log(Level.FINE, "Unregistering " + platform.getClass().getCanonicalName() + " from WorldEdit");
+            logger.info("Unregistering " + platform.getClass().getCanonicalName() + " from WorldEdit");
 
             boolean choosePreferred = false;
 
@@ -356,7 +350,6 @@ public class PlatformManager {
                             return;
                         }
                     }
-//<<<<<<< HEAD
                     final Tool tool = session.getTool(playerActor);
                     if (tool != null && tool instanceof DoubleActionBlockTool) {
                         if (tool.canUse(playerActor)) {
@@ -371,14 +364,6 @@ public class PlatformManager {
                             event.setCancelled(true);
                             return;
                         }
-//=======
-//
-//                    RegionSelector selector = session.getRegionSelector(player.getWorld());
-//
-//                    BlockVector3 blockPoint = vector.toBlockPoint();
-//                    if (selector.selectPrimary(blockPoint, ActorSelectorLimits.forActor(player))) {
-//                        selector.explainPrimarySelection(actor, session, blockPoint);
-//>>>>>>> 399e0ad5... Refactor vector system to be cleaner
                     }
                 } else if (event.getType() == Interaction.OPEN) {
                     if (session.isToolControlEnabled() && playerActor.getItemInHand(HandSide.MAIN_HAND).getType().getId().equals(getConfiguration().wandItem)) {
@@ -402,7 +387,6 @@ public class PlatformManager {
                         return;
                     }
 
-//<<<<<<< HEAD
                     final Tool tool = session.getTool(playerActor);
                     if (tool != null && tool instanceof BlockTool) {
                         if (tool.canUse(playerActor)) {
@@ -423,25 +407,10 @@ public class PlatformManager {
                                 return;
                             }
                         }
-//=======
-//                    RegionSelector selector = session.getRegionSelector(player.getWorld());
-//                    BlockVector3 blockPoint = vector.toBlockPoint();
-//                    if (selector.selectSecondary(blockPoint, ActorSelectorLimits.forActor(player))) {
-//                        selector.explainSecondarySelection(actor, session, blockPoint);
-//                    }
-//
-//                    event.setCancelled(true);
-//                    return;
-//                }
-//
-//                Tool tool = session.getTool(player.getItemInHand(HandSide.MAIN_HAND).getType());
-//                if (tool instanceof BlockTool) {
-//                    if (tool.canUse(player)) {
-//                        ((BlockTool) tool).actPrimary(queryCapability(Capability.WORLD_EDITING), getConfiguration(), player, session, location);
-//                        event.setCancelled(true);
-//>>>>>>> 399e0ad5... Refactor vector system to be cleaner
                     }
                 }
+            } finally {
+                Request.reset();
             }
         } catch (Throwable e) {
             handleThrowable(e, actor);
@@ -559,6 +528,8 @@ public class PlatformManager {
                 player.printRaw(e.getClass().getName() + ": " + e.getMessage());
                 MainUtil.handleError(e);
             }
+        } finally {
+            Request.reset();
         }
     }
 

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

@@ -22,11 +22,9 @@ package com.sk89q.worldedit.extent;
 import com.boydti.fawe.jnbt.anvil.generator.GenBase;
 import com.boydti.fawe.jnbt.anvil.generator.Resource;
 import com.boydti.fawe.object.extent.LightingExtent;
-import com.sk89q.worldedit.WorldEditException;
-
-import com.sk89q.worldedit.world.block.BlockState;
 import static com.google.common.base.Preconditions.checkNotNull;
-import com.sk89q.worldedit.world.block.BaseBlock;
+
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.function.mask.Mask;
@@ -38,16 +36,13 @@ import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
-import com.sk89q.worldedit.world.biome.BaseBiome;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.registry.BundledBlockData;
 import java.util.List;
 import javax.annotation.Nullable;
 
-/**
- * A base class for {@link Extent}s that merely passes extents onto another.
- */
 public class AbstractDelegateExtent implements LightingExtent {
 
     private transient final Extent extent;
@@ -126,10 +121,7 @@ public class AbstractDelegateExtent implements LightingExtent {
 
     @Override
     public BlockState getLazyBlock(int x, int y, int z) {
-//        mutable.mutX(x);
+        return extent.getLazyBlock(mutable.setComponents(x, y, z));
-//        mutable.mutY(y);
-//        mutable.mutZ(z);
-        return extent.getLazyBlock(BlockVector3.at(x, y, z));
     }
 
     @Override
@@ -139,10 +131,16 @@ public class AbstractDelegateExtent implements LightingExtent {
 
     @Override
     public <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T block) throws WorldEditException {
-//        mutable.mutX(x);
+        return setBlock(mutable.setComponents(x, y, z), block);
-//        mutable.mutY(y);
+    }
-//        mutable.mutZ(z);
+
-        return setBlock(BlockVector3.at(x, y, z), block);
+    public BlockState getBlock(BlockVector3 position) {
+        return extent.getBlock(position);
+    }
+
+    @Override
+    public BaseBlock getFullBlock(BlockVector3 position) {
+        return extent.getFullBlock(position);
     }
 
     @Override
@@ -150,10 +148,6 @@ public class AbstractDelegateExtent implements LightingExtent {
         return extent.setBlock(location, block);
     }
 
-    public BlockState getBlock(BlockVector3 position) {
-        return extent.getBlock(position);
-    }
-
     @Override
     @Nullable
     public Entity createEntity(Location location, BaseEntity entity) {
@@ -171,17 +165,17 @@ public class AbstractDelegateExtent implements LightingExtent {
     }
 
     @Override
-    public BaseBiome getBiome(BlockVector2 position) {
+    public BiomeType getBiome(BlockVector2 position) {
         return extent.getBiome(position);
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BaseBiome biome) {
+    public boolean setBiome(BlockVector2 position, BiomeType biome) {
         return extent.setBiome(position, biome);
     }
 
     @Override
-    public boolean setBiome(int x, int y, int z, BaseBiome biome) {
+    public boolean setBiome(int x, int y, int z, BiomeType biome) {
         return extent.setBiome(x, y, z, biome);
     }
 

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

@@ -25,7 +25,6 @@ import com.sk89q.worldedit.world.block.BlockState;
 import static com.google.common.base.Preconditions.checkNotNull;
 
 import com.sk89q.worldedit.WorldEditException;
-import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.history.change.BiomeChange;
@@ -37,9 +36,7 @@ import com.sk89q.worldedit.math.BlockVector2;
 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 javax.annotation.Nullable;
-import com.sk89q.worldedit.world.biome.BaseBiome;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
@@ -69,15 +66,15 @@ public class ChangeSetExtent extends AbstractDelegateExtent {
 
     @Override
     public <B extends BlockStateHolder<B>> boolean setBlock(BlockVector3 location, B block) throws WorldEditException {
-        BlockStateHolder previous = getBlock(location);
+        BaseBlock previous = getFullBlock(location);
         changeSet.add(new BlockChange(location, previous, block));
         return super.setBlock(location, block);
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BaseBiome biome) {
+    public boolean setBiome(BlockVector2 position, BiomeType biome) {
-        BaseBiome previous = getBiome(position);
+        BiomeType previous = getBiome(position);
-        changeSet.add(new BiomeChange(position, previous, new BaseBiome(biome)));
+        changeSet.add(new BiomeChange(position, previous, biome));
         return super.setBiome(position, biome);
     }