Merge pull request #518 from aurorasmiles/fixEntities

start reimplementing entities

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_14/BukkitGetBlocks_1_14.java

@@ -289,7 +289,6 @@ public class BukkitGetBlocks_1_14 extends CharGetBlocks {
 
     private void removeEntity(Entity entity) {
         entity.die();
-        entity.valid = false;
     }
 
     public Chunk ensureLoaded(net.minecraft.server.v1_14_R1.World nmsWorld, int chunkX,
@@ -483,21 +482,12 @@ public class BukkitGetBlocks_1_14 extends CharGetBlocks {
                             if (type != null) {
                                 Entity entity = type.a(nmsWorld);
                                 if (entity != null) {
-                                    UUID uuid = entity.getUniqueID();
+                                    BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
-                                    entityTagMap.put("UUIDMost",
+                                    final NBTTagCompound tag = (NBTTagCompound) adapter.fromNative(nativeTag);
-                                        new LongTag(uuid.getMostSignificantBits()));
-                                    entityTagMap.put("UUIDLeast",
-                                        new LongTag(uuid.getLeastSignificantBits()));
-                                    if (nativeTag != null) {
-                                        BukkitImplAdapter adapter =
-                                            WorldEditPlugin.getInstance().getBukkitImplAdapter();
-                                        final NBTTagCompound tag =
-                                            (NBTTagCompound) adapter.fromNative(nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
                                     entity.f(tag);
-                                    }
                                     entity.setLocation(x, y, z, yaw, pitch);
                                     nmsWorld
                                         .addEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM);

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

@@ -277,7 +277,6 @@ public class BukkitGetBlocks_1_15_2 extends CharGetBlocks {
 
     private void removeEntity(Entity entity) {
         entity.die();
-        entity.valid = false;
     }
 
     public Chunk ensureLoaded(net.minecraft.server.v1_15_R1.World nmsWorld, int X, int Z) {
@@ -467,17 +466,13 @@ public class BukkitGetBlocks_1_15_2 extends CharGetBlocks {
                             if (type != null) {
                                 Entity entity = type.a(nmsWorld);
                                 if (entity != null) {
-                                    UUID uuid = entity.getUniqueID();
-                                    entityTagMap.put("UUIDMost", new LongTag(uuid.getMostSignificantBits()));
-                                    entityTagMap.put("UUIDLeast", new LongTag(uuid.getLeastSignificantBits()));
-                                    if (nativeTag != null) {
                                     BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
                                     final NBTTagCompound tag = (NBTTagCompound) adapter.fromNative(nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
+                                    
                                     entity.f(tag);
-                                    }
                                     entity.setLocation(x, y, z, yaw, pitch);
                                     nmsWorld.addEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM);
                                 }

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

@@ -243,7 +243,6 @@ public class BukkitGetBlocks_1_16_1 extends CharGetBlocks {
 
     private void removeEntity(Entity entity) {
         entity.die();
-        entity.valid = false;
     }
 
     public Chunk ensureLoaded(net.minecraft.server.v1_16_R1.World nmsWorld, int X, int Z) {
@@ -436,17 +435,12 @@ public class BukkitGetBlocks_1_16_1 extends CharGetBlocks {
                             if (type != null) {
                                 Entity entity = type.a(nmsWorld);
                                 if (entity != null) {
-                                    UUID uuid = entity.getUniqueID();
-                                    entityTagMap.put("UUIDMost", new LongTag(uuid.getMostSignificantBits()));
-                                    entityTagMap.put("UUIDLeast", new LongTag(uuid.getLeastSignificantBits()));
-                                    if (nativeTag != null) {
                                     BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
                                     final NBTTagCompound tag = (NBTTagCompound) adapter.fromNative(nativeTag);
                                     for (final String name : Constants.NO_COPY_ENTITY_NBT_FIELDS) {
                                         tag.remove(name);
                                     }
-                                        entity.save(tag);
+                                    entity.load(tag);
-                                    }
                                     entity.setLocation(x, y, z, yaw, pitch);
                                     nmsWorld.addEntity(entity, CreatureSpawnEvent.SpawnReason.CUSTOM);
                                 }

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

@@ -87,7 +87,7 @@ public class BukkitEntity implements Entity {
 
     @Override
     public com.sk89q.worldedit.world.entity.EntityType getType() {
-        return EntityTypes.get(type.getName().toUpperCase(Locale.ROOT));
+        return EntityTypes.get(type.getName().toLowerCase(Locale.ROOT));
     }
 
     @Override

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

@@ -143,30 +143,7 @@ public class BukkitWorld extends AbstractWorld {
         return list;
     }
 
-    @Nullable
+    //createEntity was moved to IChunkExtent to prevent issues with Async Entitiy Add.
-    @Override
-    public com.sk89q.worldedit.entity.Entity createEntity(com.sk89q.worldedit.util.Location location, BaseEntity entity) {
-        BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
-        if (adapter != null) {
-            try {
-                Entity createdEntity = adapter.createEntity(BukkitAdapter.adapt(getWorld(), location), entity);
-                if (createdEntity != null) {
-                    return new BukkitEntity(createdEntity);
-                } else {
-                    return null;
-                }
-            } catch (Exception e) {
-                logger.warn("Corrupt entity found when creating: " + entity.getType().getId());
-                if (entity.getNbtData() != null) {
-                    logger.warn(entity.getNbtData().toString());
-                }
-                e.printStackTrace();
-                return null;
-            }
-        } else {
-            return null;
-        }
-    }
     
     /**
      * Get the world handle.

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_14_R4.java

@@ -78,6 +78,7 @@ import java.util.function.Supplier;
 import java.util.stream.Stream;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import com.sk89q.jnbt.StringTag;
 
 public final class FAWE_Spigot_v1_14_R4 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
     private final Spigot_v1_14_R4 parent;
@@ -235,7 +236,11 @@ public final class FAWE_Spigot_v1_14_R4 extends CachedBukkitAdapter implements I
             Supplier<CompoundTag> saveTag = () -> {
                 NBTTagCompound tag = new NBTTagCompound();
                 readEntityIntoTag(mcEntity, tag);
-                return (CompoundTag) toNative(tag);
+                
+                //add Id for AbstractChangeSet to work
+                CompoundTag natve = (CompoundTag) toNative(tag);
+                natve.getValue().put("Id", new StringTag(id));
+                return natve;
             };
             return new LazyBaseEntity(type, saveTag);
         } else {

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_15_R2.java

@@ -48,7 +48,6 @@ import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.util.SideEffectSet;
 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.*;
 import com.sk89q.worldedit.world.entity.EntityType;
@@ -82,6 +81,7 @@ import java.util.function.Supplier;
 import java.util.stream.Stream;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import com.sk89q.jnbt.StringTag;
 
 public final class FAWE_Spigot_v1_15_R2 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
     private final Spigot_v1_15_R2 parent;
@@ -245,7 +245,11 @@ public final class FAWE_Spigot_v1_15_R2 extends CachedBukkitAdapter implements I
             Supplier<CompoundTag> saveTag = () -> {
                 NBTTagCompound tag = new NBTTagCompound();
                 readEntityIntoTag(mcEntity, tag);
-                return (CompoundTag) toNative(tag);
+                
+                //add Id for AbstractChangeSet to work
+                CompoundTag natve = (CompoundTag) toNative(tag);
+                natve.getValue().put("Id", new StringTag(id));
+                return natve;
             };
             return new LazyBaseEntity(type, saveTag);
         } else {

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/FAWE_Spigot_v1_16_R1.java

@@ -22,17 +22,12 @@ package com.sk89q.worldedit.bukkit.adapter.impl;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.FaweCache;
 import com.boydti.fawe.beta.IChunkGet;
-import com.boydti.fawe.beta.IQueueChunk;
-import com.boydti.fawe.beta.IQueueExtent;
 import com.boydti.fawe.beta.implementation.packet.ChunkPacket;
-import com.boydti.fawe.beta.implementation.queue.SingleThreadQueueExtent;
 import com.boydti.fawe.bukkit.adapter.mc1_16_1.*;
 import com.boydti.fawe.bukkit.adapter.mc1_16_1.nbt.LazyCompoundTag_1_16_1;
-import com.google.common.io.Files;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.EditSession;
-import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.blocks.TileEntityBlock;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
@@ -42,7 +37,6 @@ import com.sk89q.worldedit.bukkit.adapter.IDelegateBukkitImplAdapter;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.LazyBaseEntity;
 import com.sk89q.worldedit.internal.wna.WorldNativeAccess;
-import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.SideEffect;
@@ -55,7 +49,6 @@ import com.sk89q.worldedit.world.registry.BlockMaterial;
 import net.minecraft.server.v1_16_R1.*;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
-import org.bukkit.World.Environment;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.craftbukkit.v1_16_R1.CraftChunk;
 import org.bukkit.craftbukkit.v1_16_R1.CraftWorld;
@@ -65,22 +58,17 @@ import org.bukkit.craftbukkit.v1_16_R1.entity.CraftEntity;
 import org.bukkit.craftbukkit.v1_16_R1.entity.CraftPlayer;
 import org.bukkit.craftbukkit.v1_16_R1.inventory.CraftItemStack;
 import org.bukkit.entity.Player;
-import org.bukkit.generator.ChunkGenerator;
 
 import javax.annotation.Nullable;
-import java.io.File;
-import java.io.IOException;
 import java.lang.ref.WeakReference;
 import java.util.Map;
 import java.util.OptionalInt;
 import java.util.Set;
-import java.util.UUID;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Future;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import com.sk89q.jnbt.StringTag;
 
 public final class FAWE_Spigot_v1_16_R1 extends CachedBukkitAdapter implements IDelegateBukkitImplAdapter<NBTBase> {
     private final Spigot_v1_16_R1 parent;
@@ -244,7 +232,11 @@ public final class FAWE_Spigot_v1_16_R1 extends CachedBukkitAdapter implements I
             Supplier<CompoundTag> saveTag = () -> {
                 NBTTagCompound tag = new NBTTagCompound();
                 readEntityIntoTag(mcEntity, tag);
-                return (CompoundTag) toNative(tag);
+                
+                //add Id for AbstractChangeSet to work
+                CompoundTag natve = (CompoundTag) toNative(tag);
+                natve.getValue().put("Id", new StringTag(id));
+                return natve;
             };
             return new LazyBaseEntity(type, saveTag);
         } else {

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

@@ -2,12 +2,26 @@ package com.boydti.fawe.beta.implementation;
 
 import com.boydti.fawe.beta.IChunk;
 import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.jnbt.DoubleTag;
+import com.sk89q.jnbt.IntArrayTag;
+import com.sk89q.jnbt.ListTag;
+import com.sk89q.jnbt.LongTag;
+import com.sk89q.jnbt.StringTag;
+import com.sk89q.jnbt.Tag;
 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.util.Location;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
 import org.jetbrains.annotations.Range;
 
 public interface IChunkExtent<T extends IChunk> extends Extent {
@@ -91,4 +105,88 @@ public interface IChunkExtent<T extends IChunk> extends Extent {
         final IChunk chunk = getOrCreateChunk(x >> 4, z >> 4);
         return chunk.getOpacity(x & 15, y, z & 15);
     }
+
+    @Override
+    default Entity createEntity(Location location, BaseEntity entity) {
+        final IChunk chunk = getOrCreateChunk(location.getBlockX() >> 4, location.getBlockZ() >> 4);
+        Map<String, Tag> map = new HashMap<>(entity.getNbtData().getValue()); //do not modify original entity data
+        map.put("Id", new StringTag(entity.getType().getName()));
+        
+        //Set pos
+        List<DoubleTag> posList = new ArrayList<>();
+        posList.add(new DoubleTag(location.getX()));
+        posList.add(new DoubleTag(location.getY()));
+        posList.add(new DoubleTag(location.getZ()));
+        map.put("Pos", new ListTag(DoubleTag.class, posList));
+        
+        //set new uuid
+        UUID newuuid = UUID.randomUUID();
+        int[] uuidArray = new int[4];
+        uuidArray[0] = (int) (newuuid.getMostSignificantBits() >> 32);
+        uuidArray[1] = (int) newuuid.getMostSignificantBits();
+        uuidArray[2] = (int) (newuuid.getLeastSignificantBits() >> 32);
+        uuidArray[3] = (int) newuuid.getLeastSignificantBits();
+        map.put("UUID", new IntArrayTag(uuidArray));
+        
+        map.put("UUIDMost", new LongTag(newuuid.getMostSignificantBits()));
+        map.put("UUIDLeast", new LongTag(newuuid.getLeastSignificantBits()));
+        
+        map.put("PersistentIDMSB", new LongTag(newuuid.getMostSignificantBits()));
+        map.put("PersistentIDLSB", new LongTag(newuuid.getLeastSignificantBits()));
+        
+        chunk.setEntity(new CompoundTag(map));
+        return new IChunkEntity(this, location, newuuid, entity);
+    }
+
+    @Override
+    default void removeEntity(int x, int y, int z, UUID uuid) {
+        final IChunk chunk = getOrCreateChunk(x >> 4, z >> 4);
+        chunk.removeEntity(uuid);
+    }
+    
+    class IChunkEntity implements Entity {
+
+        private final Extent extent;
+        private final Location location;
+        private final UUID uuid;
+        private final BaseEntity base;
+
+        public IChunkEntity(Extent extent, Location location, UUID uuid, BaseEntity base) {
+            this.extent = extent;
+            this.location = location;
+            this.uuid = uuid;
+            this.base = base;
+        }
+        
+        @Override
+        public BaseEntity getState() {
+            return base;
+        }
+
+        @Override
+        public boolean remove() {
+            extent.removeEntity(location.getBlockX(), location.getBlockY(), location.getBlockZ(), uuid);
+            return true;
+        }
+
+        @Override
+        public <T> T getFacet(Class<? extends T> cls)  {
+            return null;
+        }
+
+        @Override
+        public Location getLocation() {
+            return location;
+        }
+
+        @Override
+        public boolean setLocation(Location location) {
+            return false;
+        }
+
+        @Override
+        public Extent getExtent() {
+            return extent;
+        }
+    }
 }

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

@@ -78,12 +78,12 @@ public class MutableEntityChange implements Change {
             return;
         }
         List<DoubleTag> pos = (List<DoubleTag>) posTag.getValue();
-        int x = MathMan.roundInt(pos.get(0).getValue());
+        double x = pos.get(0).getValue();
-        int y = MathMan.roundInt(pos.get(1).getValue());
+        double y = pos.get(1).getValue();
-        int z = MathMan.roundInt(pos.get(2).getValue());
+        double z = pos.get(2).getValue();
         Extent extent = context.getExtent();
         Location location = new Location(extent, x, y, z, 0, 0);
-        String id = tag.getString("id");
+        String id = tag.getString("Id");
         EntityType type = EntityTypes.parse(id);
         BaseEntity entity = new BaseEntity(type, tag);
         context.getExtent().createEntity(location, entity);

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

@@ -43,6 +43,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
+import java.util.stream.Collectors;
 import javax.annotation.Nullable;
 
 /**
@@ -438,6 +439,11 @@ public class DiskOptimizedClipboard extends LinearClipboard implements Closeable
         return new ArrayList<>(entities);
     }
     
+    @Override
+    public List<? extends Entity> getEntities(Region region) {
+        return new ArrayList<>(entities.stream().filter(e -> region.contains(e.getLocation().toBlockPoint())).collect(Collectors.toList()));
+    }
+
     @Override
     public void removeEntity(Entity entity) {
         this.entities.remove(entity);

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

@@ -27,6 +27,7 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 import javax.annotation.Nullable;
 
 public class MemoryOptimizedClipboard extends LinearClipboard {
@@ -292,11 +293,15 @@ public class MemoryOptimizedClipboard extends LinearClipboard {
         return new ArrayList<>(entities);
     }
 
+    @Override
+    public List<? extends Entity> getEntities(Region region) {
+        return new ArrayList<>(entities.stream().filter(e -> region.contains(e.getLocation().toBlockPoint())).collect(Collectors.toList()));
+    }
+    
     @Override
     public void removeEntity(Entity entity) {
         if (entity instanceof ClipboardEntity) {
             this.entities.remove(entity);
         }
     }
-
 }

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

@@ -40,6 +40,8 @@ import com.boydti.fawe.util.ExtentTraverser;
 import com.boydti.fawe.util.MaskTraverser;
 import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.TaskManager;
+import com.sk89q.worldedit.entity.BaseEntity;
+import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.event.extent.EditSessionEvent;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
@@ -112,6 +114,7 @@ import com.sk89q.worldedit.regions.shape.RegionShape;
 import com.sk89q.worldedit.regions.shape.WorldEditExpressionEnvironment;
 import com.sk89q.worldedit.util.Countable;
 import com.sk89q.worldedit.util.Direction;
+import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.TreeGenerator;
 import com.sk89q.worldedit.util.eventbus.EventBus;
@@ -147,6 +150,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 import static com.sk89q.worldedit.regions.Regions.asFlatRegion;
 import static com.sk89q.worldedit.regions.Regions.maximumBlockY;
 import static com.sk89q.worldedit.regions.Regions.minimumBlockY;
+import java.util.UUID;
 
 /**
  * An {@link Extent} that handles history, {@link BlockBag}s, change limits,
@@ -3084,4 +3088,32 @@ public class EditSession extends PassthroughExtent implements AutoCloseable {
         }
         return false;
     }
+
+    @Override
+    public List<? extends Entity> getEntities() {
+        return world.getEntities();
+    }
+    
+    @Override
+    public List<? extends Entity> getEntities(Region region) {
+        return world.getEntities(region);
+    }
+    
+    @Override
+    public Entity createEntity(Location location, BaseEntity entity) {
+        try {
+            return this.getExtent().createEntity(location, entity);
+        } catch (WorldEditException e) {
+            throw new RuntimeException("Unexpected exception", e);
+        }
+    }
+
+    @Override
+    public void removeEntity(int x, int y, int z, UUID uuid) {
+        try {
+            this.getExtent().removeEntity(x, y, z, uuid);
+        } catch (WorldEditException e) {
+            throw new RuntimeException("Unexpected exception", e);
+        }
+    }
 }

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

@@ -40,11 +40,15 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
+
+import java.util.List;
+import java.util.UUID;
+
+import javax.annotation.Nullable;
 import org.jetbrains.annotations.Range;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.List;
 import javax.annotation.Nullable;
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -153,6 +157,11 @@ public class AbstractDelegateExtent implements Extent {
         return extent.createEntity(location, entity);
     }
 
+    @Override
+    public void removeEntity(int x, int y, int z, UUID uuid) {
+        extent.removeEntity(x, y, z, uuid);
+    }
+
     @Override
     public List<? extends Entity> getEntities() {
         return extent.getEntities();

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

@@ -37,11 +37,6 @@ public class PassthroughExtent extends AbstractDelegateExtent {
         super(extent);
     }
 
-    @Override
-    public void removeEntity(int x, int y, int z, UUID uuid) {
-        getExtent().removeEntity(x, y, z, uuid);
-    }
-
     @Override
     public boolean regenerateChunk(int x, int z, @Nullable BiomeType type, @Nullable Long seed) {
         return getExtent().regenerateChunk(x, z, type, seed);

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

@@ -45,6 +45,7 @@ import java.util.UUID;
 import javax.annotation.Nullable;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import java.util.stream.Collectors;
 
 /**
  * Stores block data as a multi-dimensional array of {@link BlockState}s and
@@ -197,13 +198,49 @@ public class BlockArrayClipboard implements Clipboard {
     public List<? extends Entity> getEntities(Region region) {
         region = region.clone();
         region.shift(BlockVector3.ZERO.subtract(origin));
-        return getParent().getEntities(region);
+        return getParent().getEntities(region).stream().map(e ->
+        {
+            if (e instanceof ClipboardEntity) {
+                ClipboardEntity ce = (ClipboardEntity) e;
+                Location oldloc = ce.getLocation();
+                Location loc = new Location(oldloc.getExtent(),
+                                            oldloc.getX() + origin.getBlockX(),
+                                            oldloc.getY() + origin.getBlockY(),
+                                            oldloc.getZ() + origin.getBlockZ(),
+                                            oldloc.getYaw(), oldloc.getPitch());
+                return new ClipboardEntity(loc, ce.entity);
+            }
+            return e;
+        }).collect(Collectors.toList());
+    }
+
+    @Override
+    public List<? extends Entity> getEntities() {
+        return getParent().getEntities().stream().map(e ->
+        {
+            if (e instanceof ClipboardEntity) {
+                ClipboardEntity ce = (ClipboardEntity) e;
+                Location oldloc = ce.getLocation();
+                Location loc = new Location(oldloc.getExtent(),
+                                            oldloc.getX() + origin.getBlockX(),
+                                            oldloc.getY() + origin.getBlockY(),
+                                            oldloc.getZ() + origin.getBlockZ(),
+                                            oldloc.getYaw(), oldloc.getPitch());
+                return new ClipboardEntity(loc, ce.entity);
+            }
+            return e;
+        }).collect(Collectors.toList());
     }
     
     @Override
     @Nullable
     public Entity createEntity(Location location, BaseEntity entity) {
-        return getParent().createEntity(location, entity);
+        Location l = new Location(location.getExtent(),
+                                  location.getX() - origin.getBlockX(),
+                                  location.getY() - origin.getBlockY(),
+                                  location.getZ() - origin.getBlockZ(),
+                                  location.getYaw(), location.getPitch());
+        return getParent().createEntity(l, entity);
     }
 
     @Override
@@ -286,7 +323,7 @@ public class BlockArrayClipboard implements Clipboard {
         private final float yaw, pitch;
 
         public ClipboardEntity(Location loc, BaseEntity entity) {
-            this((Clipboard) loc.getExtent(), loc.getBlockX(), loc.getBlockY(), loc.getBlockZ(), loc.getYaw(), loc.getPitch(), entity);
+            this((Clipboard) loc.getExtent(), loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch(), entity);
         }
 
         public ClipboardEntity(Clipboard clipboard, double x, double y, double z, float yaw, float pitch, BaseEntity entity) {

worldedit-core/src/main/java/com/sk89q/worldedit/function/entity/ExtentEntityCopy.java

@@ -37,6 +37,7 @@ import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.entity.EntityTypes;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import java.util.UUID;
 
 /**
  * Copies entities provided to the function to the provided destination
@@ -44,6 +45,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class ExtentEntityCopy implements EntityFunction {
 
+    private final Extent source;
     private final Extent destination;
     private final Vector3 from;
     private final Vector3 to;
@@ -58,11 +60,35 @@ public class ExtentEntityCopy implements EntityFunction {
      * @param to the destination position
      * @param transform the transformation to apply to both position and orientation
      */
+    @Deprecated
     public ExtentEntityCopy(Vector3 from, Extent destination, Vector3 to, Transform transform) {
         checkNotNull(from);
         checkNotNull(destination);
         checkNotNull(to);
         checkNotNull(transform);
+        this.source = null;
+        this.destination = destination;
+        this.from = from;
+        this.to = to;
+        this.transform = transform;
+    }
+    
+    /**
+     * Create a new instance.
+     *
+     * @param source the source {@code Extent}
+     * @param from the from position
+     * @param destination the destination {@code Extent}
+     * @param to the destination position
+     * @param transform the transformation to apply to both position and orientation
+     */
+    public ExtentEntityCopy(Extent source, Vector3 from, Extent destination, Vector3 to, Transform transform) {
+        checkNotNull(source);
+        checkNotNull(from);
+        checkNotNull(destination);
+        checkNotNull(to);
+        checkNotNull(transform);
+        this.source = source;
         this.destination = destination;
         this.from = from;
         this.to = to;
@@ -119,8 +145,23 @@ public class ExtentEntityCopy implements EntityFunction {
 
             // Remove
             if (isRemoving() && success) {
+                UUID uuid = null;
+                if (tag.containsKey("UUID")) {
+                    int[] arr = tag.getIntArray("UUID");
+                    uuid = new UUID((long)arr[0] << 32 | (arr[1] & 0xFFFFFFFFL), (long)arr[2] << 32 | (arr[3] & 0xFFFFFFFFL));
+                } else if (tag.containsKey("UUIDMost")) {
+                    uuid = new UUID(tag.getLong("UUIDMost"), tag.getLong("UUIDLeast"));
+                } else if (tag.containsKey("PersistentIDMSB")) {
+                    uuid = new UUID(tag.getLong("PersistentIDMSB"), tag.getLong("PersistentIDLSB"));
+                }
+                if (uuid != null) {
+                    if (source != null) {
+                        source.removeEntity(entity.getLocation().getBlockX(), entity.getLocation().getBlockY(), entity.getLocation().getBlockZ(), uuid);
+                    } else {
                         entity.remove();
                     }
+                }
+            }
 
             return success;
         } else {

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

@@ -393,7 +393,7 @@ public class ForwardExtentCopy implements Operation {
             Operations.completeBlindly(blockCopy);
 
             if (!entities.isEmpty()) {
-                ExtentEntityCopy entityCopy = new ExtentEntityCopy(from.toVector3(), destination, to.toVector3(), currentTransform);
+                ExtentEntityCopy entityCopy = new ExtentEntityCopy(source, from.toVector3(), destination, to.toVector3(), currentTransform);
                 entityCopy.setRemoving(removingEntities);
                 List<? extends Entity> entities2 = Lists.newArrayList(source.getEntities(region));
                 entities2.removeIf(entity -> {
@@ -402,6 +402,7 @@ public class ForwardExtentCopy implements Operation {
                 });
                 EntityVisitor entityVisitor = new EntityVisitor(entities.iterator(), entityCopy);
                 Operations.completeBlindly(entityVisitor);
+                affectedEntities += entityVisitor.getAffected();
             }
 
             if (transExt != null) {

worldedit-core/src/main/java/com/sk89q/worldedit/internal/Constants.java

@@ -36,9 +36,9 @@ public final class Constants {
 
     static {
         NO_COPY_ENTITY_NBT_FIELDS = Collections.unmodifiableList(Arrays.asList(
-                "UUIDLeast", "UUIDMost", // Bukkit and Vanilla
+                //"UUIDLeast", "UUIDMost", // Bukkit and Vanilla //UUID values need to be set manully to a new UUID
-                "WorldUUIDLeast", "WorldUUIDMost", // Bukkit and Vanilla
+                "WorldUUIDLeast", "WorldUUIDMost" // Bukkit and Vanilla
-                "PersistentIDMSB", "PersistentIDLSB" // Forge
+                //"PersistentIDMSB", "PersistentIDLSB" // Forge //UUID values need to be set manully to a new UUID
         ));
     }