Merge branch 'main' of https://github.com/IntellectualSites/FastAsyncWorldEdit into main

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/BukkitGetBlocks_1_15_2.java

@@ -419,14 +419,14 @@ public class BukkitGetBlocks_1_15_2 extends CharGetBlocks {
                     if (createCopy) {
                         copy.storeBiomes(currentBiomes);
                     }
-                    for (int z = 0, i = 0; z < 16; z++) {
+                    for (int y = 0, i = 0; y < 64; y++) {
-                        for (int x = 0; x < 16; x++, i++) {
+                        for (int z = 0; z < 4; z++) {
-                            final BiomeType biome = biomes[i];
+                            for (int x = 0; x < 4; x++, i++) {
-                            if (biome != null) {
+                                final BiomeType biome = biomes[i];
-                                final Biome craftBiome = BukkitAdapter.adapt(biome);
+                                if (biome != null) {
-                                BiomeBase nmsBiome = CraftBlock.biomeToBiomeBase(craftBiome);
+                                    final Biome craftBiome = BukkitAdapter.adapt(biome);
-                                for (int y = 0; y < FaweCache.IMP.WORLD_HEIGHT; y++) {
+                                    BiomeBase nmsBiome = CraftBlock.biomeToBiomeBase(craftBiome);
-                                    currentBiomes.setBiome(x >> 2, y >> 2, z >> 2, nmsBiome);
+                                    currentBiomes.setBiome(x, y, z, nmsBiome);
                                 }
                             }
                         }

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_1/BukkitGetBlocks_1_16_1.java

@@ -421,14 +421,14 @@ public class BukkitGetBlocks_1_16_1 extends CharGetBlocks {
                     if (createCopy) {
                         copy.storeBiomes(currentBiomes);
                     }
-                    for (int z = 0, i = 0; z < 16; z++) {
+                    for (int y = 0, i = 0; y < 64; y++) {
-                        for (int x = 0; x < 16; x++, i++) {
+                        for (int z = 0; z < 4; z++) {
-                            final BiomeType biome = biomes[i];
+                            for (int x = 0; x < 4; x++, i++) {
-                            if (biome != null) {
+                                final BiomeType biome = biomes[i];
-                                final Biome craftBiome = BukkitAdapter.adapt(biome);
+                                if (biome != null) {
-                                BiomeBase nmsBiome = CraftBlock.biomeToBiomeBase(craftBiome);
+                                    final Biome craftBiome = BukkitAdapter.adapt(biome);
-                                for (int y = 0; y < FaweCache.IMP.WORLD_HEIGHT; y++) {
+                                    BiomeBase nmsBiome = CraftBlock.biomeToBiomeBase(craftBiome);
-                                    currentBiomes.setBiome(x >> 2, y >> 2, z >> 2, nmsBiome);
+                                    currentBiomes.setBiome(x, y, z, nmsBiome);
                                 }
                             }
                         }

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_2/BukkitGetBlocks_1_16_2.java

@@ -59,6 +59,7 @@ import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import javax.annotation.Nullable;
 import java.util.AbstractSet;
 import java.util.Arrays;
 import java.util.Collection;
@@ -72,7 +73,6 @@ import java.util.UUID;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Future;
 import java.util.function.Function;
-import javax.annotation.Nullable;
 
 import static org.slf4j.LoggerFactory.getLogger;
 
@@ -424,14 +424,14 @@ public class BukkitGetBlocks_1_16_2 extends CharGetBlocks {
                     if (createCopy) {
                         copy.storeBiomes(currentBiomes);
                     }
-                    for (int z = 0, i = 0; z < 16; z++) {
+                    for (int y = 0, i = 0; y < 64; y++) {
-                        for (int x = 0; x < 16; x++, i++) {
+                        for (int z = 0; z < 4; z++) {
-                            final BiomeType biome = biomes[i];
+                            for (int x = 0; x < 4; x++, i++) {
-                            if (biome != null) {
+                                final BiomeType biome = biomes[i];
-                                final Biome craftBiome = BukkitAdapter.adapt(biome);
+                                if (biome != null) {
-                                BiomeBase nmsBiome = CraftBlock.biomeToBiomeBase(nmsWorld.r().b(IRegistry.ay), craftBiome);
+                                    final Biome craftBiome = BukkitAdapter.adapt(biome);
-                                for (int y = 0; y < FaweCache.IMP.WORLD_HEIGHT; y++) {
+                                    BiomeBase nmsBiome = CraftBlock.biomeToBiomeBase(nmsWorld.r().b(IRegistry.ay), craftBiome);
-                                    currentBiomes.setBiome(x >> 2, y >> 2, z >> 2, nmsBiome);
+                                    currentBiomes.setBiome(x, y, z, nmsBiome);
                                 }
                             }
                         }

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

@@ -67,6 +67,7 @@ import java.util.Locale;
 import java.util.Map;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 public class BukkitPlayer extends AbstractPlayerActor {
@@ -74,19 +75,29 @@ public class BukkitPlayer extends AbstractPlayerActor {
     private final Player player;
     private final WorldEditPlugin plugin;
     private final PermissionAttachment permAttachment;
-
+    /**
-    public BukkitPlayer(Player player) {
+     * This constructs a new {@link BukkitPlayer} for the given {@link Player}.
-        super(getExistingMap(WorldEditPlugin.getInstance(), player));
+     *
+     * @param player The corresponding {@link Player} or null if you need a null WorldEdit player for some reason.
+     */
+    public BukkitPlayer(@Nullable Player player) {
+        super(player != null ? getExistingMap(WorldEditPlugin.getInstance(), player) : new ConcurrentHashMap<>());
         this.plugin = WorldEditPlugin.getInstance();
         this.player = player;
         this.permAttachment = plugin.getPermissionAttachmentManager().getOrAddAttachment(player);
     }
 
-    public BukkitPlayer(WorldEditPlugin plugin, Player player) {
+    /**
+     * This constructs a new {@link BukkitPlayer} for the given {@link Player}.
+     *
+     * @param plugin The running instance of {@link WorldEditPlugin}
+     * @param player The corresponding {@link Player} or null if you need a null WorldEdit player for some reason.
+     */
+    public BukkitPlayer(@Nonnull WorldEditPlugin plugin, @Nullable Player player) {
         this.plugin = plugin;
         this.player = player;
         this.permAttachment = plugin.getPermissionAttachmentManager().getOrAddAttachment(player);
-        if (Settings.IMP.CLIPBOARD.USE_DISK) {
+        if (player != null && Settings.IMP.CLIPBOARD.USE_DISK) {
             loadClipboardFromDisk();
         }
     }

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

@@ -11,6 +11,7 @@ import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.world.RegenOptions;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
@@ -266,9 +267,13 @@ public abstract class Regenerator<IChunkAccess, ProtoChunk extends IChunkAccess,
         //Setting Blocks
         long start = System.currentTimeMillis();
         boolean genbiomes = options.shouldRegenBiomes();
+        boolean hasBiome = options.hasBiomeType();
+        BiomeType biome = options.getBiomeType();
         for (BlockVector3 vec : region) {
             target.setBlock(vec, source.getBlock(vec));
-            if (genbiomes) {
+            if (hasBiome) {
+                target.setBiome(vec, biome);
+            } else if (genbiomes) {
                 target.setBiome(vec, source.getBiome(vec));
             }
 //                    realExtent.setSkyLight(vec, extent.getSkyLight(vec));

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/regen/Regen_v1_15_R2.java

@@ -4,6 +4,7 @@ import com.boydti.fawe.Fawe;
 import com.boydti.fawe.beta.IChunkCache;
 import com.boydti.fawe.beta.IChunkGet;
 import com.boydti.fawe.bukkit.adapter.mc1_15_2.BukkitGetBlocks_1_15_2;
+import com.google.common.collect.ImmutableSet;
 import com.mojang.datafixers.util.Either;
 import com.sk89q.worldedit.bukkit.adapter.Regenerator;
 import com.sk89q.worldedit.extent.Extent;
@@ -53,6 +54,7 @@ import net.minecraft.server.v1_15_R1.IChunkAccess;
 import net.minecraft.server.v1_15_R1.IRegistry;
 import net.minecraft.server.v1_15_R1.LightEngineThreaded;
 import net.minecraft.server.v1_15_R1.LinearCongruentialGenerator;
+import net.minecraft.server.v1_15_R1.MinecraftKey;
 import net.minecraft.server.v1_15_R1.MinecraftServer;
 import net.minecraft.server.v1_15_R1.NBTTagCompound;
 import net.minecraft.server.v1_15_R1.NoiseGeneratorPerlin;
@@ -182,6 +184,16 @@ public class Regen_v1_15_R2 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
             @Override
             public void doTick(BooleanSupplier booleansupplier) { //no ticking
             }
+
+            private final BiomeBase singleBiome = options.hasBiomeType() ? IRegistry.BIOME.get(MinecraftKey.a(options.getBiomeType().getId())) : null;
+
+            @Override
+            public BiomeBase a(int i, int k, int j) {
+                if (options.hasBiomeType()) {
+                    return singleBiome;
+                }
+                return this.getChunkProvider().getChunkGenerator().getWorldChunkManager().getBiome(i, j, k);
+            }
         }).get();
         freshNMSWorld.savingDisabled = true;
         removeWorldFromWorldsMap();
@@ -358,15 +370,34 @@ public class Regen_v1_15_R2 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
         //init new WorldChunkManagerOverworld
         BiomeLayoutOverworldConfiguration biomeconfig = new BiomeLayoutOverworldConfiguration(freshNMSWorld.getWorldData())
                 .a((GeneratorSettingsOverworld) originalChunkProvider.getChunkGenerator().getSettings());
-        chunkManager = new WorldChunkManagerOverworld(biomeconfig);
-
-        //replace genLayer
         AreaFactory<FastAreaLazy> factory = (AreaFactory<FastAreaLazy>) initAreaFactoryMethod.invoke(null, biomeconfig.b(), biomeconfig.c(), (LongFunction) (l -> new FastWorldGenContextArea(seed, l)));
-        genLayerField.set(chunkManager, new FastGenLayer(factory));
+        if (options.hasBiomeType()) {
+            BiomeBase biome = IRegistry.BIOME.get(MinecraftKey.a(options.getBiomeType().getId()));
+            chunkManager = new SingleBiomeWorldChunkManagerOverworld(biome);
+        } else {
+            chunkManager = new WorldChunkManagerOverworld(biomeconfig);
+            //replace genlayer
+            genLayerField.set(chunkManager, new FastGenLayer(factory));
+        }
 
         return chunkManager;
     }
 
+    private static class SingleBiomeWorldChunkManagerOverworld extends WorldChunkManager {
+
+        private final BiomeBase biome;
+
+        public SingleBiomeWorldChunkManagerOverworld(BiomeBase biome) {
+            super(ImmutableSet.of(biome));
+            this.biome = biome;
+        }
+
+        @Override
+        public BiomeBase getBiome(int i, int i1, int i2) {
+            return biome;
+        }
+    }
+
     private static class FastWorldGenContextArea implements AreaContextTransformed<FastAreaLazy> {
 
         private final ConcurrentHashMap<Long, Integer> sharedAreaMap = new ConcurrentHashMap<>();

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/regen/Regen_v1_16_R1.java

@@ -6,6 +6,7 @@ import com.boydti.fawe.beta.IChunkGet;
 import com.boydti.fawe.bukkit.adapter.mc1_16_1.BukkitGetBlocks_1_16_1;
 import com.google.common.collect.ImmutableList;
 import com.mojang.datafixers.util.Either;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.Dynamic;
 import com.mojang.serialization.Lifecycle;
 import com.sk89q.worldedit.bukkit.adapter.Regenerator;
@@ -17,6 +18,7 @@ import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.nio.file.Path;
+import java.util.Arrays;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -53,15 +55,14 @@ import net.minecraft.server.v1_16_R1.GeneratorSettings;
 import net.minecraft.server.v1_16_R1.GeneratorSettingsFlat;
 import net.minecraft.server.v1_16_R1.IChunkAccess;
 import net.minecraft.server.v1_16_R1.IRegistry;
-import net.minecraft.server.v1_16_R1.IRegistryCustom;
 import net.minecraft.server.v1_16_R1.LightEngineThreaded;
 import net.minecraft.server.v1_16_R1.LinearCongruentialGenerator;
+import net.minecraft.server.v1_16_R1.MinecraftKey;
 import net.minecraft.server.v1_16_R1.MinecraftServer;
 import net.minecraft.server.v1_16_R1.NBTBase;
 import net.minecraft.server.v1_16_R1.NBTTagCompound;
 import net.minecraft.server.v1_16_R1.NoiseGeneratorPerlin;
 import net.minecraft.server.v1_16_R1.ProtoChunk;
-import net.minecraft.server.v1_16_R1.RegistryReadOps;
 import net.minecraft.server.v1_16_R1.ResourceKey;
 import net.minecraft.server.v1_16_R1.World;
 import net.minecraft.server.v1_16_R1.WorldChunkManager;
@@ -201,6 +202,16 @@ public class Regen_v1_16_R1 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
             @Override
             public void doTick(BooleanSupplier booleansupplier) { //no ticking
             }
+
+            private final BiomeBase singleBiome = options.hasBiomeType() ? IRegistry.BIOME.get(MinecraftKey.a(options.getBiomeType().getId())) : null;
+
+            @Override
+            public BiomeBase a(int i, int j, int k) {
+                if (options.hasBiomeType()) {
+                    return singleBiome;
+                }
+                return this.getChunkProvider().getChunkGenerator().getWorldChunkManager().getBiome(i, j, k);
+            }
         }).get();
         freshNMSWorld.savingDisabled = true;
         removeWorldFromWorldsMap();
@@ -398,16 +409,41 @@ public class Regen_v1_16_R1 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
 
         //init new WorldChunkManagerOverworld
         boolean legacyBiomeInitLayer = legacyBiomeInitLayerField.getBoolean(chunkManager);
-        boolean largebiomes = largeBiomesField.getBoolean(chunkManager);
+        boolean largeBiomes = largeBiomesField.getBoolean(chunkManager);
-        chunkManager = new WorldChunkManagerOverworld(seed, legacyBiomeInitLayer, largebiomes);
 
-        //replace genLayer
+        AreaFactory<FastAreaLazy> factory = (AreaFactory<FastAreaLazy>) initAreaFactoryMethod.invoke(null, legacyBiomeInitLayer, largeBiomes ? 6 : 4, 4, (LongFunction) (l -> new FastWorldGenContextArea(seed, l)));
-        AreaFactory<FastAreaLazy> factory = (AreaFactory<FastAreaLazy>) initAreaFactoryMethod.invoke(null, legacyBiomeInitLayer, largebiomes ? 6 : 4, 4, (LongFunction) (l -> new FastWorldGenContextArea(seed, l)));
+        if (options.hasBiomeType()) {
-        genLayerField.set(chunkManager, new FastGenLayer(factory));
+            BiomeBase biome = IRegistry.BIOME.get(MinecraftKey.a(options.getBiomeType().getId()));
+            chunkManager = new SingleBiomeWorldChunkManagerOverworld(biome);
+        } else {
+            chunkManager = new WorldChunkManagerOverworld(seed, legacyBiomeInitLayer, largeBiomes);
+            //replace genLayer
+            genLayerField.set(chunkManager, new FastGenLayer(factory));
+        }
 
         return chunkManager;
     }
 
+    private static class SingleBiomeWorldChunkManagerOverworld extends WorldChunkManager {
+
+        private final BiomeBase biome;
+
+        public SingleBiomeWorldChunkManagerOverworld(BiomeBase biome) {
+            super(Arrays.asList(biome));
+            this.biome = biome;
+        }
+
+        @Override
+        protected Codec<? extends WorldChunkManager> a() {
+            return WorldChunkManagerOverworld.e;
+        }
+
+        @Override
+        public BiomeBase getBiome(int i, int i1, int i2) {
+            return biome;
+        }
+    }
+
     private static class FastWorldGenContextArea implements AreaContextTransformed<FastAreaLazy> {
 
         private final ConcurrentHashMap<Long, Integer> sharedAreaMap = new ConcurrentHashMap<>();

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/regen/Regen_v1_16_R2.java

@@ -6,6 +6,7 @@ import com.boydti.fawe.beta.IChunkGet;
 import com.boydti.fawe.bukkit.adapter.mc1_16_2.BukkitGetBlocks_1_16_2;
 import com.google.common.collect.ImmutableList;
 import com.mojang.datafixers.util.Either;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.Dynamic;
 import com.mojang.serialization.Lifecycle;
 import com.sk89q.worldedit.bukkit.adapter.Regenerator;
@@ -28,6 +29,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.BooleanSupplier;
 import java.util.function.LongFunction;
 import java.util.function.Supplier;
+import java.util.stream.Collectors;
 import javax.annotation.Nullable;
 import net.minecraft.server.v1_16_R2.Area;
 import net.minecraft.server.v1_16_R2.AreaContextTransformed;
@@ -56,11 +58,14 @@ import net.minecraft.server.v1_16_R2.IRegistry;
 import net.minecraft.server.v1_16_R2.IRegistryCustom;
 import net.minecraft.server.v1_16_R2.LightEngineThreaded;
 import net.minecraft.server.v1_16_R2.LinearCongruentialGenerator;
+import net.minecraft.server.v1_16_R2.MinecraftKey;
 import net.minecraft.server.v1_16_R2.MinecraftServer;
 import net.minecraft.server.v1_16_R2.NBTBase;
 import net.minecraft.server.v1_16_R2.NBTTagCompound;
 import net.minecraft.server.v1_16_R2.NoiseGeneratorPerlin;
 import net.minecraft.server.v1_16_R2.ProtoChunk;
+import net.minecraft.server.v1_16_R2.RegistryGeneration;
+import net.minecraft.server.v1_16_R2.RegistryMaterials;
 import net.minecraft.server.v1_16_R2.RegistryReadOps;
 import net.minecraft.server.v1_16_R2.ResourceKey;
 import net.minecraft.server.v1_16_R2.World;
@@ -202,6 +207,16 @@ public class Regen_v1_16_R2 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
             @Override
             public void doTick(BooleanSupplier booleansupplier) { //no ticking
             }
+
+            private final BiomeBase singleBiome = options.hasBiomeType() ? RegistryGeneration.WORLDGEN_BIOME.get(MinecraftKey.a(options.getBiomeType().getId())) : null;
+
+            @Override
+            public BiomeBase a(int i, int j, int k) {
+                if (options.hasBiomeType()) {
+                    return singleBiome;
+                }
+                return this.getChunkProvider().getChunkGenerator().getWorldChunkManager().getBiome(i, j, k);
+            }
         }).get();
         freshNMSWorld.savingDisabled = true;
         removeWorldFromWorldsMap();
@@ -395,8 +410,6 @@ public class Regen_v1_16_R2 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
         largeBiomesField.setAccessible(true);
         Field biomeRegistryField = WorldChunkManagerOverworld.class.getDeclaredField("k");
         biomeRegistryField.setAccessible(true);
-        Field genLayerField = WorldChunkManagerOverworld.class.getDeclaredField("f");
-        genLayerField.setAccessible(true);
         Field areaLazyField = GenLayer.class.getDeclaredField("b");
         areaLazyField.setAccessible(true);
         Method initAreaFactoryMethod = GenLayers.class.getDeclaredMethod("a", boolean.class, int.class, int.class, LongFunction.class);
@@ -405,16 +418,52 @@ public class Regen_v1_16_R2 extends Regenerator<IChunkAccess, ProtoChunk, Chunk,
         //init new WorldChunkManagerOverworld
         boolean legacyBiomeInitLayer = legacyBiomeInitLayerField.getBoolean(chunkManager);
         boolean largebiomes = largeBiomesField.getBoolean(chunkManager);
-        IRegistry<BiomeBase> biomeRegistry = (IRegistry<BiomeBase>) biomeRegistryField.get(chunkManager);
+        IRegistry<BiomeBase> biomeRegistrynms = (IRegistry<BiomeBase>) biomeRegistryField.get(chunkManager);
-        chunkManager = new WorldChunkManagerOverworld(seed, legacyBiomeInitLayer, largebiomes, biomeRegistry);
+        IRegistry<BiomeBase> biomeRegistry;
+        if (options.hasBiomeType()) {
+            BiomeBase biome = RegistryGeneration.WORLDGEN_BIOME.get(MinecraftKey.a(options.getBiomeType().getId()));
+            biomeRegistry = new RegistryMaterials<>(ResourceKey.a(new MinecraftKey("fawe_biomes")), Lifecycle.experimental());
+            ((RegistryMaterials) biomeRegistry).a(0, RegistryGeneration.WORLDGEN_BIOME.c(biome).get(), biome, Lifecycle.experimental());
+        } else {
+            biomeRegistry = biomeRegistrynms;
+        }
+        chunkManager = new FastWorldChunkManagerOverworld(seed, legacyBiomeInitLayer, largebiomes, biomeRegistry);
 
         //replace genLayer
         AreaFactory<FastAreaLazy> factory = (AreaFactory<FastAreaLazy>) initAreaFactoryMethod.invoke(null, legacyBiomeInitLayer, largebiomes ? 6 : 4, 4, (LongFunction) (l -> new FastWorldGenContextArea(seed, l)));
-        genLayerField.set(chunkManager, new FastGenLayer(factory));
+        ((FastWorldChunkManagerOverworld) chunkManager).genLayer = new FastGenLayer(factory);
 
         return chunkManager;
     }
 
+    private static class FastWorldChunkManagerOverworld extends WorldChunkManager {
+
+        private GenLayer genLayer;
+        private final IRegistry<BiomeBase> k;
+        private final boolean isSingleRegistry;
+
+        public FastWorldChunkManagerOverworld(long seed, boolean legacyBiomeInitLayer, boolean largeBiomes, IRegistry<BiomeBase> biomeRegistry) {
+            super(biomeRegistry.g().collect(Collectors.toList()));
+            this.k = biomeRegistry;
+            this.isSingleRegistry = biomeRegistry.d().size() == 1;
+            this.genLayer = GenLayers.a(seed, legacyBiomeInitLayer, largeBiomes ? 6 : 4, 4);
+        }
+
+        @Override
+        protected Codec<? extends WorldChunkManager> a() {
+            return WorldChunkManagerOverworld.e;
+        }
+
+        @Override
+        public BiomeBase getBiome(int i, int i1, int i2) {
+            if (this.isSingleRegistry) {
+                return this.k.fromId(0);
+            }
+            return this.genLayer.a(this.k, i, i2);
+        }
+    }
+
+
     private static class FastWorldGenContextArea implements AreaContextTransformed<FastAreaLazy> {
 
         private final ConcurrentHashMap<Long, Integer> sharedAreaMap = new ConcurrentHashMap<>();

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

@@ -242,7 +242,7 @@ public class Fawe {
             String dateString = br.readLine();
             br.close();
             this.version = FaweVersion.tryParse(versionString, commitString, dateString);
-            Settings.IMP.DATE = new Date(100 + version.year, version.month, version.day).toGMTString();
+            Settings.IMP.DATE = new Date(100 + version.year, version.month, version.day).toString();
             Settings.IMP.BUILD = "https://ci.athion.net/job/FastAsyncWorldEdit-1.16/" + version.build;
             Settings.IMP.COMMIT = "https://github.com/IntellectualSites/FastAsyncWorldEdit/commit/" + Integer.toHexString(version.hash);
         } catch (Throwable ignored) {

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

@@ -60,6 +60,12 @@ public interface IChunkSet extends IBlocks, OutputExtent {
 
     Set<UUID> getEntityRemoves();
 
+    /**
+     * This will return only biomes SET to the EXTENT or QUEUE. This will NOT return the current biomes in the world.
+     * This is used for history purposes.
+     *
+     * @return Array of biomes set
+     */
     BiomeType[] getBiomes();
 
     default boolean hasBiomes() {

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharSetBlocks.java

@@ -57,7 +57,7 @@ public class CharSetBlocks extends CharBlocks implements IChunkSet {
         if (biomes == null) {
             return null;
         }
-        return biomes[(z << 4) | x];
+        return biomes[y << 2 | z & 12 | x >> 2];
     }
 
     @Override
@@ -88,9 +88,9 @@ public class CharSetBlocks extends CharBlocks implements IChunkSet {
     @Override
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
         if (biomes == null) {
-            biomes = new BiomeType[256];
+            biomes = new BiomeType[1024];
         }
-        biomes[x + (z << 4)] = biome;
+        biomes[y << 2 | z & 12 | x >> 2] = biome;
         return true;
     }
 

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/FallbackChunkGet.java

@@ -159,11 +159,13 @@ public class FallbackChunkGet implements IChunkGet {
         }
         BiomeType[] biomes = set.getBiomes();
         if (biomes != null) {
-            for (int z = 0, i = 0; z < 16; z++) {
+            for (int y = 0, i = 0; y < 64; y++) {
-                for (int x = 0; x < 16; x++, i++) {
+                for (int z = 0; z < 4; z++) {
-                    BiomeType biome = biomes[i];
+                    for (int x = 0; x < 4; x++, i++) {
-                    if (biome != null) {
+                        BiomeType biome = biomes[i];
-                        extent.setBiome(bx + x, 0, bz + z, biome);
+                        if (biome != null) {
+                            extent.setBiome(bx + (x << 2), y << 2, bz + (z << 2), biome);
+                        }
                     }
                 }
             }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/chunk/ChunkHolder.java

@@ -94,7 +94,8 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
 
     @Override
     public BiomeType[] getBiomes() {
-        return delegate.set(this).getBiomes(); // TODO return get?
+        // Uses set as this method is only used to retrieve biomes that have been set to the extent/chunk.
+        return delegate.set(this).getBiomes();
     }
 
     @Override public char[][] getLight() {
@@ -218,8 +219,7 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
         }
 
         @Override
-        public BaseBlock getFullBlock(ChunkHolder chunk, int x, int y,
+        public BaseBlock getFullBlock(ChunkHolder chunk, int x, int y, int z) {
-            int z) {
             return chunk.chunkExisting.getFullBlock(x, y, z);
         }
 

worldedit-core/src/main/java/com/boydti/fawe/config/Settings.java

@@ -36,8 +36,6 @@ public class Settings extends Config {
             "fawe.<plugin>  permission. See the Permissions page for supported region plugins."
     })
     public boolean REGION_RESTRICTIONS = true;
-    @Comment("FAWE will skip chunks when there's not enough memory available")
-    public boolean PREVENT_CRASHES = false;
     @Comment({
             "FAWE will cancel non admin edits when memory consumption exceeds this %",
             " - Bypass with `/wea` or `//fast` or `fawe.bypass`",
@@ -80,9 +78,6 @@ public class Settings extends Config {
             "Specific aspects can be turned on and off further below"
         })
         public boolean PLOTSQUARED_HOOK = true;
-        @Comment({"Send anonymous FAWE statistics to https://bstats.org/.",
-            "Please keep this setting enabled. It helps us identifying which parts of FAWE are used the most to organize future updates better."})
-        public boolean BSTATS = true;
     }
 
     @Comment("Paths for various directories")

worldedit-core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAChunk.java

@@ -50,7 +50,7 @@ public class MCAChunk implements IChunk {
     public final boolean[] hasSections = new boolean[16];
 
     public boolean hasBiomes = false;
-    public final BiomeType[] biomes = new BiomeType[256];
+    public final BiomeType[] biomes = new BiomeType[1024];
 
     public final char[] blocks = new char[65536];
 
@@ -481,7 +481,7 @@ public class MCAChunk implements IChunk {
 
     @Override
     public BiomeType getBiomeType(int x, int y, int z) {
-        return this.biomes[(z << 4) | x];
+        return this.biomes[y << 2 | z & 12 | x >> 2];
     }
 
     @Override
@@ -505,7 +505,7 @@ public class MCAChunk implements IChunk {
     @Override
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
         setModified();
-        biomes[x + (z << 4)] = biome; //TODO Support 3D Biomes
+        biomes[y << 2 | z & 12 | x >> 2] = biome;
         return true;
     }
 

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

@@ -98,7 +98,7 @@ public class HistoryExtent extends AbstractDelegateExtent {
     public boolean setBiome(BlockVector3 position, BiomeType newBiome) {
         BiomeType oldBiome = this.getBiome(position);
         if (oldBiome.getId() != newBiome.getId()) {
-            this.changeSet.addBiomeChange(position.getBlockX(), position.getBlockZ(), oldBiome, newBiome);
+            this.changeSet.addBiomeChange(position.getBlockX(), position.getBlockY(), position.getBlockZ(), oldBiome, newBiome);
             return getExtent().setBiome(position, newBiome);
         } else {
             return false;
@@ -109,7 +109,7 @@ public class HistoryExtent extends AbstractDelegateExtent {
     public boolean setBiome(int x, int y, int z, BiomeType newBiome) {
         BiomeType oldBiome = this.getBiome(BlockVector3.at(x, y, z));
         if (oldBiome.getId() != newBiome.getId()) {
-            this.changeSet.addBiomeChange(x, z, oldBiome, newBiome);
+            this.changeSet.addBiomeChange(x, y, z, oldBiome, newBiome);
             return getExtent().setBiome(x, y, z, newBiome);
         } else {
             return false;

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

@@ -46,7 +46,7 @@ public class NullChangeSet extends AbstractChangeSet {
     }
 
     @Override
-    public void addBiomeChange(int x, int z, BiomeType from, BiomeType to) {
+    public void addBiomeChange(int x, int y, int z, BiomeType from, BiomeType to) {
 
     }
 

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

@@ -57,6 +57,12 @@ public class VisualExtent extends AbstractDelegateExtent {
         return false;
     }
 
+    @Override
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
+        // Do nothing
+        return false;
+    }
+
     public void clear() {
         IQueueExtent queue = (IQueueExtent) getExtent();
         queue.cancel();

worldedit-core/src/main/java/com/boydti/fawe/object/change/MutableBiomeChange.java

@@ -4,11 +4,12 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.history.UndoContext;
 import com.sk89q.worldedit.history.change.Change;
 import com.sk89q.worldedit.math.MutableBlockVector2;
+import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 
 public class MutableBiomeChange implements Change {
 
-    private MutableBlockVector2 mutable = new MutableBlockVector2();
+    private final MutableBlockVector3 mutable = new MutableBlockVector3();
     private int from;
     private int to;
 
@@ -17,8 +18,8 @@ public class MutableBiomeChange implements Change {
         this.to = 0;
     }
 
-    public void setBiome(int x, int z, int from, int to) {
+    public void setBiome(int x, int y, int z, int from, int to) {
-        mutable.setComponents(x, z);
+        mutable.setComponents(x, y, z);
         this.from = from;
         this.to = to;
     }

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

@@ -188,13 +188,15 @@ public abstract class AbstractChangeSet implements ChangeSet, IBatchProcessor {
 
         BiomeType[] biomes = set.getBiomes();
         if (biomes != null) {
-            for (int z = 0, index = 0; z < 16; z++) {
+            for (int y = 0, index = 0; y < 64; y++) {
-                for (int x = 0; x < 16; x++, index++) {
+                for (int z = 0; z < 4; z++) {
-                    BiomeType newBiome = biomes[index];
+                    for (int x = 0; x < 4; x++, index++) {
-                    if (newBiome != null) {
+                        BiomeType newBiome = biomes[index];
-                        BiomeType oldBiome = get.getBiomeType(x, 0, z);
+                        if (newBiome != null) {
-                        if (oldBiome != newBiome) {
+                            BiomeType oldBiome = get.getBiomeType(x, y, z);
-                            addBiomeChange(bx + x, bz + z, oldBiome, newBiome);
+                            if (oldBiome != newBiome) {
+                                addBiomeChange(bx + (x << 2), y << 2,bz + (z << 2), oldBiome, newBiome);
+                            }
                         }
                     }
                 }
@@ -216,7 +218,7 @@ public abstract class AbstractChangeSet implements ChangeSet, IBatchProcessor {
 
     public abstract void addEntityCreate(CompoundTag tag);
 
-    public abstract void addBiomeChange(int x, int z, BiomeType from, BiomeType to);
+    public abstract void addBiomeChange(int x, int y, int z, BiomeType from, BiomeType to);
 
     public Iterator<Change> getIterator(BlockBag blockBag, int mode, boolean redo) {
         return getIterator(redo);

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

@@ -69,8 +69,8 @@ public class AbstractDelegateChangeSet extends AbstractChangeSet {
     }
 
     @Override
-    public void addBiomeChange(int x, int z, BiomeType from, BiomeType to) {
+    public void addBiomeChange(int x, int y, int z, BiomeType from, BiomeType to) {
-        parent.addBiomeChange(x, z, from, to);
+        parent.addBiomeChange(x, y, z, from, to);
     }
 
     @Override

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

@@ -68,7 +68,7 @@ public class CFIChangeSet extends AbstractChangeSet {
     }
 
     @Override
-    public void addBiomeChange(int x, int z, BiomeType from, BiomeType to) {
+    public void addBiomeChange(int x, int y, int z, BiomeType from, BiomeType to) {
         throw new UnsupportedOperationException("Only CFI operations are supported");
     }
 

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

@@ -321,7 +321,7 @@ public abstract class FaweStreamChangeSet extends AbstractChangeSet {
     }
 
     @Override
-    public void addBiomeChange(int x, int z, BiomeType from, BiomeType to) {
+    public void addBiomeChange(int x, int y, int z, BiomeType from, BiomeType to) {
         blockSize++;
         try {
             FaweOutputStream os = getBiomeOS();
@@ -333,6 +333,7 @@ public abstract class FaweStreamChangeSet extends AbstractChangeSet {
             os.write((byte) (z >> 16));
             os.write((byte) (z >> 8));
             os.write((byte) (z));
+            os.write((byte) (y));
             os.writeVarInt(from.getInternalId());
             os.writeVarInt(to.getInternalId());
         } catch (Throwable e) {
@@ -462,9 +463,10 @@ public abstract class FaweStreamChangeSet extends AbstractChangeSet {
                     if (int1 != -1) {
                         int x = ((int1 << 24) + (is.read() << 16) + (is.read() << 8) + is.read());
                         int z = ((is.read() << 24) + (is.read() << 16) + (is.read() << 8) + is.read());
+                        int y = is.read();
                         int from = is.readVarInt();
                         int to = is.readVarInt();
-                        change.setBiome(x, z, from, to);
+                        change.setBiome(x, y, z, from, to);
                         return change;
                     }
                 } catch (EOFException ignored) {

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/DiskOptimizedClipboard.java

@@ -185,7 +185,7 @@ public class DiskOptimizedClipboard extends LinearClipboard implements Closeable
 
     @Override
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
-        setBiome(getIndex(x, y, z), biome);
+        setBiome(getIndex(x, 0, z), biome);
         return true;
     }
 

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

@@ -4,7 +4,6 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -56,7 +55,7 @@ public class MultiTransform extends RandomTransform {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         // don't use streams for each block place, it'd be incredibly slow
         boolean result = false;
         for (AbstractDelegateExtent extent : extents) {

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

@@ -2,9 +2,7 @@ package com.boydti.fawe.object.extent;
 
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableBlockVector2;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
@@ -13,7 +11,6 @@ public class OffsetExtent extends ResettableExtent {
     private final int dx;
     private final int dy;
     private final int dz;
-    private transient MutableBlockVector2 mutable = new MutableBlockVector2();
 
     public OffsetExtent(Extent parent, int dx, int dy, int dz) {
         super(parent);
@@ -23,9 +20,9 @@ public class OffsetExtent extends ResettableExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         return getExtent()
-            .setBiome(mutable.setComponents(position.getBlockX() + dx, position.getBlockZ() + dz),
+            .setBiome(position.getBlockX() + dx, position.getBlockY() + dy, position.getBlockZ() + dz,
                 biome);
     }
 
@@ -46,10 +43,4 @@ public class OffsetExtent extends ResettableExtent {
         throws WorldEditException {
         return getExtent().setBlock(x + dx, y + dy, z + dz, block);
     }
-
-    @Override
-    public ResettableExtent setExtent(Extent extent) {
-        mutable = new MutableBlockVector2();
-        return super.setExtent(extent);
-    }
 }

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

@@ -8,7 +8,6 @@ import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -100,7 +99,7 @@ public class ProcessedWEExtent extends AbstractDelegateExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         if (!limit.MAX_CHANGES()) {
             WEManager.IMP.cancelEditSafe(this, FaweCache.MAX_CHANGES);
             return false;

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

@@ -2,9 +2,7 @@ package com.boydti.fawe.object.extent;
 
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableBlockVector2;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
@@ -16,7 +14,6 @@ public class RandomOffsetTransform extends ResettableExtent {
     private final int dy;
     private final int dz;
     private transient SplittableRandom random;
-    private transient MutableBlockVector2 mutable = new MutableBlockVector2();
 
     public RandomOffsetTransform(Extent parent, int dx, int dy, int dz) {
         super(parent);
@@ -27,10 +24,11 @@ public class RandomOffsetTransform extends ResettableExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 pos, BiomeType biome) {
+    public boolean setBiome(BlockVector3 pos, BiomeType biome) {
         int x = pos.getBlockX() + random.nextInt(1 + (dx << 1)) - dx;
+        int y = pos.getBlockY() + random.nextInt(1 + (dy << 1)) - dy;
         int z = pos.getBlockZ() + random.nextInt(1 + (dz << 1)) - dz;
-        return getExtent().setBiome(mutable.setComponents(x, z), biome);
+        return getExtent().setBiome(x, y, z, biome);
     }
 
     @Override
@@ -54,7 +52,6 @@ public class RandomOffsetTransform extends ResettableExtent {
     @Override
     public ResettableExtent setExtent(Extent extent) {
         random = new SplittableRandom();
-        mutable = new MutableBlockVector2();
         return super.setExtent(extent);
     }
 }

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

@@ -4,7 +4,6 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.util.Location;
@@ -82,17 +81,20 @@ public class ScaleTransform extends ResettableExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         boolean result = false;
-        MutableBlockVector3 pos = new MutableBlockVector3(
+        MutableBlockVector3 pos = new MutableBlockVector3(getPos(position));
-            getPos(position.getBlockX(), 0, position.getBlockZ()));
         double sx = pos.getX();
+        double sy = pos.getY();
         double sz = pos.getZ();
-        double ex = pos.getX() + dx;
+        double ex = sx + dx;
-        double ez = pos.getZ() + dz;
+        double ey = Math.min(maxy, sy + dy);
-        for (pos.mutZ(sz); pos.getZ() < ez; pos.mutZ(pos.getZ() + 1)) {
+        double ez = sz + dz;
-            for (pos.mutX(sx); pos.getX() < ex; pos.mutX(pos.getX() + 1)) {
+        for (pos.mutY(sy); pos.getY() < ey; pos.mutY(pos.getY() + 1)) {
-                result |= super.setBiome(pos.toBlockVector2(), biome);
+            for (pos.mutZ(sz); pos.getZ() < ez; pos.mutZ(pos.getZ() + 1)) {
+                for (pos.mutX(sx); pos.getX() < ex; pos.mutX(pos.getX() + 1)) {
+                    result |= super.setBiome(pos, biome);
+                }
             }
         }
         return result;

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

@@ -52,7 +52,7 @@ public abstract class SelectTransform extends ResettableExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         return getExtent(position).setBiome(position, biome);
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/util/IncendoPaster.java

@@ -232,6 +232,7 @@ public final class IncendoPaster implements Paster {
         RuntimeMXBean rb = ManagementFactory.getRuntimeMXBean();
         b.append("Uptime: ").append(TimeUnit.MINUTES.convert(rb.getUptime(), TimeUnit.MILLISECONDS))
             .append(" minutes").append('\n');
+        b.append("JVM Flags: ").append(rb.getInputArguments()).append('\n');
         b.append("Free Memory: ").append(runtime.freeMemory() / 1024 / 1024).append(" MB").append('\n');
         b.append("Max Memory: ").append(runtime.maxMemory() / 1024 / 1024).append(" MB").append('\n');
         b.append("Total Memory: ").append(runtime.totalMemory() / 1024 / 1024).append(" MB").append('\n');

worldedit-core/src/main/java/com/boydti/fawe/wrappers/WorldWrapper.java

@@ -29,6 +29,7 @@ import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.TreeGenerator;
 import com.sk89q.worldedit.world.AbstractWorld;
+import com.sk89q.worldedit.world.RegenOptions;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
@@ -242,6 +243,11 @@ public class WorldWrapper extends AbstractWorld {
         return parent.regenerate(region, session);
     }
 
+    @Override
+    public boolean regenerate(Region region, Extent extent, RegenOptions options) {
+        return parent.regenerate(region, extent, options);
+    }
+
     @Override
     public boolean generateTree(TreeGenerator.TreeType type, EditSession editSession, BlockVector3 position) throws MaxChangedBlocksException {
         return TaskManager.IMP.sync(() -> {

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

@@ -63,7 +63,9 @@ import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.TreeGenerator.TreeType;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
 import com.sk89q.worldedit.util.formatting.text.TranslatableComponent;
+import com.sk89q.worldedit.world.RegenOptions;
 import com.sk89q.worldedit.world.World;
+import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import org.enginehub.piston.annotation.Command;
@@ -609,15 +611,26 @@ public class RegionCommands {
     @CommandPermissions("worldedit.regen")
     @Logging(REGION)
     @Confirm(Confirm.Processor.REGION)
-    public void regenerateChunk(Actor actor, World world, LocalSession session, EditSession editSession,
+    void regenerate(Actor actor, World world, LocalSession session, EditSession editSession,
-                                @Selection Region region) throws WorldEditException {
+                    @Selection Region region,
+                    @Arg(desc = "The seed to regenerate with, otherwise uses world seed", def = "")
+                            Long seed,
+                    @Switch(name = 'b', desc = "Regenerate biomes as well")
+                            boolean regenBiomes,
+                    @Arg(desc = "Biome to apply for this regeneration (only works in overworld)", def = "")
+                            BiomeType biomeType) throws WorldEditException {
         Mask mask = session.getMask();
         boolean success;
         try {
-            session.setMask((Mask) null);
+            session.setMask(null);
-            session.setSourceMask((Mask) null);
+            session.setSourceMask(null);
             actor.printInfo(TranslatableComponent.of("fawe.regen.time"));
-            success = world.regenerate(region, editSession);
+            RegenOptions options = RegenOptions.builder()
+                    .seed(seed)
+                    .regenBiomes(regenBiomes)
+                    .biomeType(biomeType)
+                    .build();
+            success = world.regenerate(region, editSession, options);
         } finally {
             session.setMask(mask);
             session.setSourceMask(mask);

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

@@ -52,7 +52,8 @@ public @interface Confirm {
                     * (long) value;
                 long max = 2 << 18;
                 if (max != -1 && area > max) {
-                    actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.region", pos1, pos2, getArgs(context)));
+                    actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.region",
+                            pos1, pos2, getArgs(context), region.getHeight() * area));
                     return confirm(actor, context);
                 }
                 return true;
@@ -63,8 +64,9 @@ public @interface Confirm {
             public boolean passes(Actor actor, InjectedValueAccess context, double value) {
                 int max = WorldEdit.getInstance().getConfiguration().maxRadius;
                 if (max != -1 && value > max) {
-                    actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.region", value, max, getArgs(context)));
+                    actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.radius",
-                    return Processor.confirm(actor, context);
+                            value, max, getArgs(context)));
+                    return confirm(actor, context);
                 }
                 return true;
             }
@@ -74,8 +76,9 @@ public @interface Confirm {
             public boolean passes(Actor actor, InjectedValueAccess context, double value) {
                 int max = 50; //TODO configurable, get Key.of(Method.class) @Limit
                 if (max != -1 && value > max) {
-                    actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.region", value, max, getArgs(context)));
+                    actor.print(Caption.of("fawe.cancel.worldedit.cancel.reason.confirm.limit",
-                    return Processor.confirm(actor, context);
+                            value, max, getArgs(context)));
+                    return confirm(actor, context);
                 }
                 return true;
             }

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

@@ -38,6 +38,7 @@ import com.sk89q.worldedit.extension.factory.parser.mask.NoiseMaskParser;
 import com.sk89q.worldedit.extension.factory.parser.mask.OffsetMaskParser;
 import com.sk89q.worldedit.extension.factory.parser.mask.ROCAngleMaskParser;
 import com.sk89q.worldedit.extension.factory.parser.mask.RegionMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.RichOffsetMaskParser;
 import com.sk89q.worldedit.extension.factory.parser.mask.SimplexMaskParser;
 import com.sk89q.worldedit.extension.factory.parser.mask.SolidMaskParser;
 import com.sk89q.worldedit.extension.factory.parser.mask.SurfaceMaskParser;
@@ -97,6 +98,7 @@ public final class MaskFactory extends AbstractFactory<Mask> {
         register(new FalseMaskParser(worldEdit));
         register(new LiquidMaskParser(worldEdit));
         //register(new RadiusMaskParser(worldEdit)); TODO: Adapt to work with FAWE's Chunk I/O
+        register(new RichOffsetMaskParser(worldEdit));
         register(new ROCAngleMaskParser(worldEdit));
         register(new SimplexMaskParser(worldEdit));
         register(new SurfaceMaskParser(worldEdit));

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

@@ -0,0 +1,51 @@
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.command.util.SuggestionHelper;
+import com.sk89q.worldedit.extension.factory.parser.RichParser;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+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.math.BlockVector3;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.stream.Stream;
+
+public class RichOffsetMaskParser extends RichParser<Mask> {
+
+    /**
+     * Create a new rich parser with a defined prefix for the result, e.g. {@code #simplex}.
+     *
+     * @param worldEdit the worldedit instance.
+     */
+    public RichOffsetMaskParser(WorldEdit worldEdit) {
+        super(worldEdit, "#offset");
+    }
+
+    @Override
+    protected Stream<String> getSuggestions(String argumentInput, int index) {
+        if (index < 3) {
+            return SuggestionHelper.suggestPositiveIntegers(argumentInput);
+        }
+        if (index == 3) {
+            return worldEdit.getMaskFactory().getSuggestions(argumentInput).stream();
+        }
+        return Stream.empty();
+    }
+
+    @Override
+    protected Mask parseFromInput(@NotNull String[] arguments, ParserContext context) throws InputParseException {
+        if (arguments.length != 4) {
+            return null;
+        }
+        int x = Integer.parseInt(arguments[0]);
+        int y = Integer.parseInt(arguments[1]);
+        int z = Integer.parseInt(arguments[2]);
+        Mask submask = worldEdit.getMaskFactory().parseFromInput(arguments[3], context);
+        OffsetMask offsetMask = new OffsetMask(submask, BlockVector3.at(x, y, z));
+        return new MaskIntersection(offsetMask, Masks.negate(submask));
+    }
+}

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

@@ -192,7 +192,7 @@ public interface Actor extends Identifiable, SessionOwner, Subject, MapMetadatab
         if (confirm == null) {
             return false;
         }
-        queueAction(confirm::signal);
+        confirm.signal();
         return true;
     }
 

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

@@ -31,7 +31,6 @@ import com.boydti.fawe.beta.implementation.filter.block.FilterBlock;
 import com.google.common.cache.LoadingCache;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.function.mask.Mask;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
@@ -93,11 +92,6 @@ public class MaskingExtent extends AbstractDelegateExtent implements IBatchProce
         return this.mask.test(location) && super.setBlock(location, block);
     }
 
-    @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
-        return this.mask.test(position.toBlockVector3()) && super.setBiome(position, biome);
-    }
-
     @Override
     public boolean setBiome(int x, int y, int z, BiomeType biome) {
         return this.mask.test(BlockVector3.at(x, y, z)) && super.setBiome(x, y, z, biome);

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

@@ -94,7 +94,11 @@ public interface OutputExtent {
      */
     @Deprecated
     default boolean setBiome(BlockVector2 position, BiomeType biome) {
-        return setBiome(position.toBlockVector3(), biome);
+        boolean result = false;
+        for (int y = 0; y < 256; y ++) {
+            result |= setBiome(position.toBlockVector3().mutY(y), biome);
+        }
+        return result;
     }
 
     @NonAbstractForCompatibility(

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

@@ -10,7 +10,6 @@ import com.sk89q.worldedit.function.generator.Resource;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.session.ClipboardHolder;
@@ -199,7 +198,7 @@ public class PassthroughExtent extends AbstractDelegateExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         return getExtent().setBiome(position, biome);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extent/world/ChunkLoadingExtent.java

@@ -71,9 +71,9 @@ public class ChunkLoadingExtent extends AbstractDelegateExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         if (enabled) {
-            world.checkLoadedChunk(position.toBlockVector3());
+            world.checkLoadedChunk(position);
         }
         return super.setBiome(position, biome);
     }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/world/WatchdogTickingExtent.java

@@ -25,7 +25,6 @@ import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extension.platform.Watchdog;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -88,7 +87,7 @@ public class WatchdogTickingExtent extends AbstractDelegateExtent {
     }
 
     @Override
-    public boolean setBiome(BlockVector2 position, BiomeType biome) {
+    public boolean setBiome(BlockVector3 position, BiomeType biome) {
         onOperation();
         return super.setBiome(position, biome);
     }

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

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldedit.internal.command;
 
+import com.boydti.fawe.config.Settings;
 import com.sk89q.worldedit.command.util.annotation.Confirm;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
@@ -46,6 +47,10 @@ public class ConfirmHandler implements CommandCallListener {
             return;
         }
         Actor actor = actorOpt.get();
+        // don't check confirmation if actor doesn't need to confirm
+        if (!Settings.IMP.getLimit(actor).CONFIRM_LARGE) {
+            return;
+        }
         if (!confirmAnnotation.value().passes(actor, parameters, 1)) {
             throw new StopExecutionException(TextComponent.empty());
         }

worldedit-core/src/main/java/com/sk89q/worldedit/world/RegenOptions.java

@@ -22,6 +22,7 @@ package com.sk89q.worldedit.world;
 import com.google.auto.value.AutoValue;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.world.biome.BiomeType;
 
 import java.util.OptionalLong;
 import javax.annotation.Nullable;
@@ -38,7 +39,7 @@ public abstract class RegenOptions {
      * @return the builder
      */
     public static Builder builder() {
-        return new AutoValue_RegenOptions.Builder().seed(OptionalLong.empty()).regenBiomes(false);
+        return new AutoValue_RegenOptions.Builder().seed(OptionalLong.empty()).regenBiomes(false).biomeType(null);
     }
 
     @AutoValue.Builder
@@ -69,6 +70,13 @@ public abstract class RegenOptions {
          */
         public abstract Builder regenBiomes(boolean regenBiomes);
 
+        /**
+         * Defines the {@code BiomeType} the regenerator should use for regeneration. Defaults to {@code null}.
+         * @param biomeType the {@code BiomeType} to be used for regeneration
+         * @return this builder
+         */
+        public abstract Builder biomeType(@Nullable BiomeType biomeType);
+
         /**
          * Build the options object.
          *
@@ -99,4 +107,10 @@ public abstract class RegenOptions {
         return isRegenBiomes();
     }
 
+    @Nullable public abstract BiomeType getBiomeType();
+
+    public boolean hasBiomeType() {
+        return getBiomeType() != null;
+    }
+
 }

worldedit-core/src/main/resources/lang/strings.json

@@ -108,6 +108,8 @@
 	"fawe.cancel.worldedit.cancel.count": "Cancelled {0} edits.",
 	"fawe.cancel.worldedit.cancel.reason.confirm": "Use //confirm to execute {2}",
 	"fawe.cancel.worldedit.cancel.reason.confirm.region": "Your selection is large ({0} -> {1}, containing {3} blocks). Use //confirm to execute {2}",
+	"fawe.cancel.worldedit.cancel.reason.confirm.radius": "Your radius is large ({0} > {1}). Use //confirm to execute {2}",
+	"fawe.cancel.worldedit.cancel.reason.confirm.limit": "You're exceeding your limit for this action ({0} > {1}). Use //confirm to execute {2}",
 	"fawe.cancel.worldedit.cancel.reason": "Your WorldEdit action was cancelled: {0}.",
 	"fawe.cancel.worldedit.cancel.reason.manual": "Manual cancellation",
 	"fawe.cancel.worldedit.cancel.reason.low.memory": "Low memory",
@@ -505,6 +507,8 @@
     "worldedit.sideeffect.lighting.description": "Updates block lighting",
     "worldedit.sideeffect.neighbors": "Neighbors",
     "worldedit.sideeffect.neighbors.description": "Notifies nearby blocks of changes",
+    "worldedit.sideeffect.update": "Update",
+    "worldedit.sideeffect.update.description": "Notifies the changed block",
     "worldedit.sideeffect.validation": "Validation",
     "worldedit.sideeffect.validation.description": "Validates and fixes inconsistent world state, such as disconnected blocks",
     "worldedit.sideeffect.entity_ai": "Entity AI",