Changed Location to use Extents rather than worlds and overhauled the new Entity code a bit.

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

@@ -96,7 +96,7 @@ final class BukkitAdapter {
         final double length = Math.sqrt(eyeX * eyeX + eyeZ * eyeZ);
         final float pitch = (float) Math.toDegrees(Math.atan2(-direction.getY(), length));
         return new org.bukkit.Location(
-                adapt(location.getWorld()),
+                adapt((World) location.getExtent()),
                 position.getX(), position.getY(), position.getZ(),
                 yaw, pitch);
     }

src/bukkit/java/com/sk89q/worldedit/bukkit/BukkitCommandSender.java

@@ -19,8 +19,6 @@
 
 package com.sk89q.worldedit.bukkit;
 
-import com.sk89q.worldedit.LocalWorld;
-import com.sk89q.worldedit.PlayerNeededException;
 import com.sk89q.worldedit.WorldEditPermissionException;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.internal.cui.CUIEvent;

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

@@ -22,8 +22,8 @@ package com.sk89q.worldedit.bukkit;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.entity.metadata.Tameable;
+import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.util.Location;
-import com.sk89q.worldedit.world.World;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -63,7 +63,7 @@ class BukkitEntity implements Entity {
     }
 
     @Override
-    public World getWorld() {
+    public Extent getExtent() {
         return BukkitAdapter.adapt(getEntity().getWorld());
     }
 
@@ -74,7 +74,12 @@ class BukkitEntity implements Entity {
 
     @Override
     public BaseEntity getState() {
-        return new BukkitBaseEntity(getEntity().getType());
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    @Override
+    public boolean remove() {
+        return false;
     }
 
 }

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

@@ -184,13 +184,7 @@ public class BukkitWorld extends LocalWorld {
     @Nullable
     @Override
     public com.sk89q.worldedit.entity.Entity createEntity(com.sk89q.worldedit.util.Location location, BaseEntity entity) {
-        if (entity instanceof BukkitBaseEntity) {
-            BukkitBaseEntity bukkitBaseEntity = (BukkitBaseEntity) entity;
-            Entity nativeEntity = getWorld().spawnEntity(BukkitAdapter.adapt(location), bukkitBaseEntity.getBukkitType());
-            return BukkitAdapter.adapt(nativeEntity);
-        } else {
-            return null;
-        }
+        throw new UnsupportedOperationException("Not implemented yet");
     }
 
     private class NmsBlockClassLoader extends ClassLoader {

src/forge/java/com/sk89q/worldedit/forge/ForgeAdapter.java

@@ -17,28 +17,23 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.bukkit;
+package com.sk89q.worldedit.forge;
 
-import com.sk89q.worldedit.entity.AbstractBaseEntity;
-import com.sk89q.worldedit.entity.BaseEntity;
-import org.bukkit.entity.EntityType;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.world.World;
+import net.minecraft.util.Vec3;
 
-import static com.google.common.base.Preconditions.checkNotNull;
+final class ForgeAdapter {
 
-/**
- * An implementation of a {@link BaseEntity} for Bukkit.
- */
-public class BukkitBaseEntity extends AbstractBaseEntity {
-
-    private final EntityType type;
-
-    public BukkitBaseEntity(EntityType type) {
-        checkNotNull(type);
-        this.type = type;
+    private ForgeAdapter() {
     }
 
-    public EntityType getBukkitType() {
-        return type;
+    public static World adapt(net.minecraft.world.World world) {
+        return new ForgeWorld(world);
+    }
+
+    public static Vector adapt(Vec3 vector) {
+        return new Vector(vector.xCoord, vector.yCoord, vector.zCoord);
     }
 
 }

src/forge/java/com/sk89q/worldedit/forge/ForgeEntity.java

@@ -0,0 +1,67 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.forge;
+
+import com.sk89q.worldedit.Vector;
+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 net.minecraft.entity.EntityList;
+import net.minecraft.nbt.NBTTagCompound;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+class ForgeEntity implements Entity {
+
+    private final net.minecraft.entity.Entity entity;
+
+    ForgeEntity(net.minecraft.entity.Entity entity) {
+        checkNotNull(entity);
+        this.entity = entity;
+    }
+
+    @Override
+    public BaseEntity getState() {
+        NBTTagCompound tag = new NBTTagCompound();
+        entity.writeToNBT(tag);
+        return new BaseEntity(EntityList.getEntityString(entity), NBTConverter.fromNative(tag));
+    }
+
+    @Override
+    public Location getLocation() {
+        return new Location(
+                ForgeAdapter.adapt(entity.worldObj),
+                new Vector(entity.posX, entity.posY, entity.posZ),
+                ForgeAdapter.adapt(entity.getLookVec()));
+    }
+
+    @Override
+    public Extent getExtent() {
+        return ForgeAdapter.adapt(entity.worldObj);
+    }
+
+    @Override
+    public boolean remove() {
+        entity.setDead();
+        return true;
+    }
+
+}

src/forge/java/com/sk89q/worldedit/forge/ForgeWorld.java

@@ -25,6 +25,7 @@ import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.blocks.LazyBlock;
 import com.sk89q.worldedit.entity.BaseEntity;
+import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.util.TreeGenerator.TreeType;
@@ -32,8 +33,8 @@ import com.sk89q.worldedit.world.AbstractWorld;
 import com.sk89q.worldedit.world.mapping.NullResolver;
 import com.sk89q.worldedit.world.mapping.Resolver;
 import net.minecraft.block.Block;
-import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityHanging;
+import net.minecraft.entity.EntityList;
 import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.IProjectile;
 import net.minecraft.entity.item.*;
@@ -55,7 +56,7 @@ import net.minecraft.world.gen.ChunkProviderServer;
 import javax.annotation.Nullable;
 import java.lang.ref.WeakReference;
 import java.lang.reflect.Field;
-import java.util.Collections;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 import java.util.logging.Level;
@@ -227,7 +228,7 @@ public class ForgeWorld extends AbstractWorld {
         int num = 0;
         double radiusSq = radius * radius;
 
-        for (Entity obj : (Iterable<Entity>) getWorld().loadedEntityList) {
+        for (net.minecraft.entity.Entity obj : (Iterable<net.minecraft.entity.Entity>) getWorld().loadedEntityList) {
             if ((obj instanceof EntityLiving)) {
                 EntityLiving ent = (EntityLiving) obj;
 
@@ -270,7 +271,7 @@ public class ForgeWorld extends AbstractWorld {
         int num = 0;
         double radiusSq = Math.pow(radius, 2.0D);
 
-        for (Entity ent : (Iterable<Entity>) getWorld().loadedEntityList) {
+        for (net.minecraft.entity.Entity ent : (Iterable<net.minecraft.entity.Entity>) getWorld().loadedEntityList) {
             if ((radius != -1) && (origin.distanceSq(new Vector(ent.posX, ent.posY, ent.posZ)) > radiusSq)) {
                 continue;
             }
@@ -497,7 +498,7 @@ public class ForgeWorld extends AbstractWorld {
 
     @Nullable
     @Override
-    public <T> T getMetaData(com.sk89q.worldedit.entity.Entity entity, Class<T> metaDataClass) {
+    public <T> T getMetaData(Entity entity, Class<T> metaDataClass) {
         return null;
     }
 
@@ -508,15 +509,30 @@ public class ForgeWorld extends AbstractWorld {
     }
 
     @Override
-    public List<com.sk89q.worldedit.entity.Entity> getEntities() {
-        return Collections.emptyList();
+    public List<Entity> getEntities() {
+        List<Entity> entities = new ArrayList<Entity>();
+        for (Object entity : getWorld().getLoadedEntityList()) {
+            entities.add(new ForgeEntity((net.minecraft.entity.Entity) entity));
+        }
+        return entities;
     }
 
     @Nullable
     @Override
-    public com.sk89q.worldedit.entity.Entity createEntity(Location location, BaseEntity entity) {
+    public Entity createEntity(Location location, BaseEntity entity) {
+        World world = getWorld();
+        net.minecraft.entity.Entity createdEntity = EntityList.createEntityByName(entity.getTypeId(), world);
+        if (createdEntity != null) {
+            CompoundTag tag = entity.getNbtData();
+            if (tag != null) {
+                createdEntity.readFromNBT(NBTConverter.toNative(entity.getNbtData()));
+            }
+            world.spawnEntityInWorld(createdEntity);
+            return new ForgeEntity(createdEntity);
+        } else {
             return null;
         }
+    }
 
     /**
      * Thrown when the reference to the world is lost.

src/main/java/com/sk89q/worldedit/WorldVector.java

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit;
 
 import com.sk89q.worldedit.internal.LocalWorldAdapter;
+import com.sk89q.worldedit.world.World;
 
 /**
  * @deprecated Use {@link com.sk89q.worldedit.util.Location} wherever possible
@@ -97,7 +98,7 @@ public class WorldVector extends Vector {
      * @param location the location
      */
     public WorldVector(com.sk89q.worldedit.util.Location location) {
-        this(LocalWorldAdapter.adapt(location.getWorld()), location.getX(), location.getY(), location.getZ());
+        this(LocalWorldAdapter.adapt((World) location.getExtent()), location.getX(), location.getY(), location.getZ());
     }
 
     /**

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

@@ -25,6 +25,7 @@ import com.sk89q.worldedit.blocks.BlockID;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Platform;
+import com.sk89q.worldedit.world.World;
 
 /**
  * A super pickaxe mode that will remove blocks in an area.
@@ -48,7 +49,7 @@ public class AreaPickaxe implements BlockTool {
         int ox = clicked.getBlockX();
         int oy = clicked.getBlockY();
         int oz = clicked.getBlockZ();
-        int initialType = clicked.getWorld().getBlockType(clicked.toVector());
+        int initialType = ((World) clicked.getExtent()).getBlockType(clicked.toVector());
 
         if (initialType == 0) {
             return true;
@@ -70,7 +71,7 @@ public class AreaPickaxe implements BlockTool {
                             continue;
                         }
 
-                        clicked.getWorld().queueBlockBreakEffect(server, pos, initialType, clicked.toVector().distanceSq(pos));
+                        ((World) clicked.getExtent()).queueBlockBreakEffect(server, pos, initialType, clicked.toVector().distanceSq(pos));
 
                         editSession.setBlock(pos, air);
                     }

src/main/java/com/sk89q/worldedit/command/tool/BlockDataCyler.java

@@ -41,7 +41,7 @@ public class BlockDataCyler implements DoubleActionBlockTool {
     private boolean handleCycle(Platform server, LocalConfiguration config,
             Player player, LocalSession session, Location clicked, boolean forward) {
 
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
 
         int type = world.getBlockType(clicked.toVector());
         int data = world.getBlockData(clicked.toVector());

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

@@ -48,7 +48,7 @@ public class BlockReplacer implements DoubleActionBlockTool {
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, com.sk89q.worldedit.util.Location clicked) {
 BlockBag bag = session.getBlockBag(player);
 
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
         EditSession editSession = WorldEdit.getInstance().getEditSessionFactory().getEditSession(world, -1, bag, player);
 
         try {
@@ -67,7 +67,7 @@ BlockBag bag = session.getBlockBag(player);
 
     @Override
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session, com.sk89q.worldedit.util.Location clicked) {
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
         EditSession editSession = WorldEdit.getInstance().getEditSessionFactory().getEditSession(world, -1, player);
         targetBlock = (editSession).getBlock(clicked.toVector());
         BlockType type = BlockType.fromID(targetBlock.getType());

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

@@ -53,7 +53,7 @@ public class FloatingTreeRemover implements BlockTool {
     public boolean actPrimary(Platform server, LocalConfiguration config,
             Player player, LocalSession session, Location clicked) {
 
-        final World world = clicked.getWorld();
+        final World world = (World) clicked.getExtent();
 
         switch (world.getBlockType(clicked.toVector())) {
         case BlockID.LOG:

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

@@ -51,7 +51,7 @@ public class FloodFillTool implements BlockTool {
 
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
 
         int initialType = world.getBlockType(clicked.toVector());
 

src/main/java/com/sk89q/worldedit/command/tool/QueryTool.java

@@ -42,7 +42,7 @@ public class QueryTool implements BlockTool {
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, com.sk89q.worldedit.util.Location clicked) {
 
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
         EditSession editSession = WorldEdit.getInstance().getEditSessionFactory().getEditSession(world, 0, player);
         BaseBlock block = (editSession).rawGetBlock(clicked.toVector());
         BlockType type = BlockType.fromID(block.getType());

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

@@ -50,7 +50,7 @@ public class RecursivePickaxe implements BlockTool {
 
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, com.sk89q.worldedit.util.Location clicked) {
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
 
         int initialType = world.getBlockType(clicked.toVector());
 

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

@@ -42,7 +42,7 @@ public class SinglePickaxe implements BlockTool {
 
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, com.sk89q.worldedit.util.Location clicked) {
-        World world = clicked.getWorld();
+        World world = (World) clicked.getExtent();
         final int blockType = world.getBlockType(clicked.toVector());
         if (blockType == BlockID.BEDROCK
                 && !player.canDestroyBedrock()) {

src/main/java/com/sk89q/worldedit/entity/AbstractBaseEntity.java

@@ -1,51 +0,0 @@
-/*
- * WorldEdit, a Minecraft world manipulation toolkit
- * Copyright (C) sk89q <http://www.sk89q.com>
- * Copyright (C) WorldEdit team and contributors
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
- * for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.sk89q.worldedit.entity;
-
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.worldedit.world.DataException;
-
-import static com.google.common.base.Preconditions.checkNotNull;
-
-/**
- * An abstract implementation of {@link BaseEntity} that implementations can
- * subclass to simplify implementation.
- */
-public abstract class AbstractBaseEntity implements BaseEntity {
-
-    private CompoundTag nbtData;
-
-    @Override
-    public boolean hasNbtData() {
-        return getNbtData() != null;
-    }
-
-    @Override
-    public CompoundTag getNbtData() {
-        return nbtData;
-    }
-
-    @Override
-    public void setNbtData(CompoundTag nbtData) throws DataException {
-        checkNotNull(nbtData);
-        this.nbtData = nbtData;
-    }
-
-}

src/main/java/com/sk89q/worldedit/entity/BaseEntity.java

@@ -19,11 +19,74 @@
 
 package com.sk89q.worldedit.entity;
 
+import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.world.NbtValued;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
 /**
  * A snapshot of an entity that can be reused and passed around.
  */
-public interface BaseEntity extends NbtValued {
+public class BaseEntity implements NbtValued {
+
+    private String id;
+    private CompoundTag nbtData;
+
+    /**
+     * Create a new base entity.
+     *
+     * @param id the entity type ID
+     * @param nbtData NBT data
+     */
+    public BaseEntity(String id, CompoundTag nbtData) {
+        setTypeId(id);
+        setNbtData(nbtData);
+    }
+
+    /**
+     * Make a clone of a {@link BaseEntity}.
+     *
+     * @param other the object to clone
+     */
+    public BaseEntity(BaseEntity other) {
+        checkNotNull(other);
+        setTypeId(other.getTypeId());
+        setNbtData(other.getNbtData());
+    }
+
+    @Override
+    public boolean hasNbtData() {
+        return true;
+    }
+
+    @Override
+    public CompoundTag getNbtData() {
+        return nbtData;
+    }
+
+    @Override
+    public void setNbtData(CompoundTag nbtData) {
+        checkNotNull(nbtData);
+        this.nbtData = nbtData;
+    }
+
+    /**
+     * Get the entity that determines the type of entity.
+     *
+     * @return the entity ID
+     */
+    public String getTypeId() {
+        return id;
+    }
+
+    /**
+     * Set the entity ID that determines the type of entity.
+     *
+     * @param id the id
+     */
+    public void setTypeId(String id) {
+        checkNotNull(id);
+        this.id = id;
+    }
 
 }

src/main/java/com/sk89q/worldedit/entity/Entity.java

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.entity;
 
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.util.Location;
-import com.sk89q.worldedit.world.World;
 
 /**
  * A reference to an instance of an entity that exists in an {@link Extent}
@@ -50,10 +49,17 @@ public interface Entity {
     Location getLocation();
 
     /**
-     * Get the world that this entity is on.
+     * Get the extent that this entity is on.
      *
-     * @return the world
+     * @return the extent
      */
-    World getWorld();
+    Extent getExtent();
+
+    /**
+     * Remove this entity from it container.
+     *
+     * @return true if removal was successful
+     */
+    boolean remove();
 
 }

src/main/java/com/sk89q/worldedit/entity/Player.java

@@ -19,16 +19,28 @@
 
 package com.sk89q.worldedit.entity;
 
-import com.sk89q.worldedit.*;
+import com.sk89q.worldedit.PlayerDirection;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.WorldVector;
+import com.sk89q.worldedit.WorldVectorFace;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
+import com.sk89q.worldedit.world.World;
 
 /**
  * A player.
  */
 public interface Player extends Entity, Actor {
 
+    /**
+     * Return the world that the player is on.
+     *
+     * @return the world
+     */
+    World getWorld();
+
     /**
      * Returns true if the entity is holding a pick axe.
      *

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

@@ -19,12 +19,21 @@
 
 package com.sk89q.worldedit.extension.platform;
 
-import com.sk89q.worldedit.*;
+import com.sk89q.worldedit.BlockWorldVector;
+import com.sk89q.worldedit.LocalPlayer;
+import com.sk89q.worldedit.NotABlockException;
+import com.sk89q.worldedit.PlayerDirection;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.WorldEditPermissionException;
+import com.sk89q.worldedit.WorldVector;
+import com.sk89q.worldedit.WorldVectorFace;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.blocks.BlockID;
 import com.sk89q.worldedit.blocks.BlockType;
 import com.sk89q.worldedit.blocks.ItemID;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.internal.cui.CUIEvent;
 import com.sk89q.worldedit.util.TargetBlock;
 import com.sk89q.worldedit.world.World;
@@ -36,7 +45,12 @@ import java.io.File;
  * that is intended for implementations of WorldEdit to use to wrap
  * players that make use of WorldEdit.
  */
-public abstract class AbstractPlayerActor implements Actor, Player {
+public abstract class AbstractPlayerActor implements Actor, Player, Cloneable {
+
+    @Override
+    public final Extent getExtent() {
+        return getWorld();
+    }
 
     /**
      * Returns direction according to rotation. May return null.
@@ -466,4 +480,15 @@ public abstract class AbstractPlayerActor implements Actor, Player {
         return false;
     }
 
+    @SuppressWarnings("CloneDoesntCallSuperClone")
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        throw new CloneNotSupportedException("Not supported");
+    }
+
+    @Override
+    public boolean remove() {
+        return false;
+    }
+
 }

src/main/java/com/sk89q/worldedit/internal/command/WorldEditBinding.java

@@ -19,13 +19,21 @@
 
 package com.sk89q.worldedit.internal.command;
 
-import com.sk89q.worldedit.*;
+import com.sk89q.worldedit.BiomeType;
+import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.IncompleteRegionException;
+import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.UnknownDirectionException;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.input.NoMatchException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.extension.platform.Actor;
+import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.annotation.Direction;
@@ -33,7 +41,12 @@ import com.sk89q.worldedit.internal.annotation.Selection;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.TreeGenerator;
 import com.sk89q.worldedit.util.TreeGenerator.TreeType;
-import com.sk89q.worldedit.util.command.parametric.*;
+import com.sk89q.worldedit.util.command.parametric.ArgumentStack;
+import com.sk89q.worldedit.util.command.parametric.BindingBehavior;
+import com.sk89q.worldedit.util.command.parametric.BindingHelper;
+import com.sk89q.worldedit.util.command.parametric.BindingMatch;
+import com.sk89q.worldedit.util.command.parametric.ParameterException;
+import com.sk89q.worldedit.world.World;
 
 import java.util.Arrays;
 
@@ -158,7 +171,10 @@ public class WorldEditBinding extends BindingHelper {
         ParserContext parserContext = new ParserContext();
         parserContext.setActor(context.getContext().getLocals().get(Actor.class));
         if (actor instanceof Entity) {
-            parserContext.setWorld(((Entity) actor).getWorld());
+            Extent extent = ((Entity) actor).getExtent();
+            if (extent instanceof World) {
+                parserContext.setWorld((World) extent);
+            }
         }
         parserContext.setSession(worldEdit.getSessionManager().get(actor));
         try {
@@ -184,7 +200,10 @@ public class WorldEditBinding extends BindingHelper {
         ParserContext parserContext = new ParserContext();
         parserContext.setActor(context.getContext().getLocals().get(Actor.class));
         if (actor instanceof Entity) {
-            parserContext.setWorld(((Entity) actor).getWorld());
+            Extent extent = ((Entity) actor).getExtent();
+            if (extent instanceof World) {
+                parserContext.setWorld((World) extent);
+            }
         }
         parserContext.setSession(worldEdit.getSessionManager().get(actor));
         try {
@@ -210,7 +229,10 @@ public class WorldEditBinding extends BindingHelper {
         ParserContext parserContext = new ParserContext();
         parserContext.setActor(context.getContext().getLocals().get(Actor.class));
         if (actor instanceof Entity) {
-            parserContext.setWorld(((Entity) actor).getWorld());
+            Extent extent = ((Entity) actor).getExtent();
+            if (extent instanceof World) {
+                parserContext.setWorld((World) extent);
+            }
         }
         parserContext.setSession(worldEdit.getSessionManager().get(actor));
         try {

src/main/java/com/sk89q/worldedit/util/Location.java

@@ -20,7 +20,7 @@
 package com.sk89q.worldedit.util;
 
 import com.sk89q.worldedit.Vector;
-import com.sk89q.worldedit.world.World;
+import com.sk89q.worldedit.extent.Extent;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -36,92 +36,92 @@ import static com.google.common.base.Preconditions.checkNotNull;
  */
 public class Location {
 
-    private final World world;
+    private final Extent extent;
     private final Vector position;
     private final Vector direction;
 
     /**
-     * Create a new instance in the given world at 0, 0, 0 with a
+     * Create a new instance in the given extent at 0, 0, 0 with a
      * direction vector of 0, 0, 0.
      *
-     * @param world the world
+     * @param extent the extent
      */
-    public Location(World world) {
-        this(world, new Vector(), new Vector());
+    public Location(Extent extent) {
+        this(extent, new Vector(), new Vector());
     }
 
     /**
-     * Create a new instance in the given world with the given coordinates
+     * Create a new instance in the given extent with the given coordinates
      * with a direction vector of 0, 0, 0.
      *
-     * @param world the world
+     * @param extent the extent
      * @param x the X coordinate
      * @param y the Y coordinate
      * @param z the Z coordinate
      */
-    public Location(World world, double x, double y, double z) {
-        this(world, new Vector(x, y, z), new Vector());
+    public Location(Extent extent, double x, double y, double z) {
+        this(extent, new Vector(x, y, z), new Vector());
     }
 
     /**
-     * Create a new instance in the given world with the given position
+     * Create a new instance in the given extent with the given position
      * vector and a direction vector of 0, 0, 0.
      *
-     * @param world the world
+     * @param extent the extent
      * @param position the position vector
      */
-    public Location(World world, Vector position) {
-        this(world, position, new Vector());
+    public Location(Extent extent, Vector position) {
+        this(extent, position, new Vector());
     }
 
     /**
-     * Create a new instance in the given world with the given coordinates
+     * Create a new instance in the given extent with the given coordinates
      * and the given direction vector.
      *
-     * @param world the world
+     * @param extent the extent
      * @param x the X coordinate
      * @param y the Y coordinate
      * @param z the Z coordinate
      * @param direction the direction vector
      */
-    public Location(World world, double x, double y, double z, Vector direction) {
-        this(world, new Vector(x, y, z), direction);
+    public Location(Extent extent, double x, double y, double z, Vector direction) {
+        this(extent, new Vector(x, y, z), direction);
     }
 
     /**
-     * Create a new instance in the given world with the given position vector
+     * Create a new instance in the given extent with the given position vector
      * and the given direction vector.
      *
-     * @param world the world
+     * @param extent the extent
      * @param position the position vector
      * @param direction the direction vector
      */
-    public Location(World world, Vector position, Vector direction) {
-        checkNotNull(world);
+    public Location(Extent extent, Vector position, Vector direction) {
+        checkNotNull(extent);
         checkNotNull(position);
         checkNotNull(direction);
-        this.world = world;
+        this.extent = extent;
         this.position = position;
         this.direction = direction;
     }
 
     /**
-     * Get the world.
+     * Get the extent.
      *
-     * @return the world
+     * @return the extent
      */
-    public World getWorld() {
-        return world;
+    public Extent getExtent() {
+        return extent;
     }
 
     /**
-     * Create a clone of this object with the given world.
+     * Create a clone of this object with the given extent.
      *
-     * @param world the new world
+     * @param extent the new extent
      * @return the new instance
      */
-    public Location setWorld(World world) {
-        return new Location(world, position, getDirection());
+    public Location setExtent(Extent extent) {
+        return new Location(extent, position, getDirection());
     }
 
     /**
@@ -143,7 +143,7 @@ public class Location {
      * @return the new instance
      */
     public Location setDirection(Vector direction) {
-        return new Location(world, position, direction);
+        return new Location(extent, position, direction);
     }
 
     /**
@@ -181,7 +181,7 @@ public class Location {
      * @return a new immutable instance
      */
     public Location setX(double x) {
-        return new Location(world, position.setX(x), direction);
+        return new Location(extent, position.setX(x), direction);
     }
 
     /**
@@ -192,7 +192,7 @@ public class Location {
      * @return a new immutable instance
      */
     public Location setX(int x) {
-        return new Location(world, position.setX(x), direction);
+        return new Location(extent, position.setX(x), direction);
     }
 
     /**
@@ -221,7 +221,7 @@ public class Location {
      * @return a new immutable instance
      */
     public Location setY(double y) {
-        return new Location(world, position.setY(y), direction);
+        return new Location(extent, position.setY(y), direction);
     }
 
     /**
@@ -232,7 +232,7 @@ public class Location {
      * @return a new immutable instance
      */
     public Location setY(int y) {
-        return new Location(world, position.setY(y), direction);
+        return new Location(extent, position.setY(y), direction);
     }
 
     /**
@@ -261,7 +261,7 @@ public class Location {
      * @return a new immutable instance
      */
     public Location setZ(double z) {
-        return new Location(world, position.setZ(z), direction);
+        return new Location(extent, position.setZ(z), direction);
     }
 
     /**
@@ -272,7 +272,7 @@ public class Location {
      * @return a new immutable instance
      */
     public Location setZ(int z) {
-        return new Location(world, position.setZ(z), direction);
+        return new Location(extent, position.setZ(z), direction);
     }
 
     @Override
@@ -284,14 +284,14 @@ public class Location {
 
         if (!direction.equals(location.direction)) return false;
         if (!position.equals(location.position)) return false;
-        if (!world.equals(location.world)) return false;
+        if (!extent.equals(location.extent)) return false;
 
         return true;
     }
 
     @Override
     public int hashCode() {
-        int result = world.hashCode();
+        int result = extent.hashCode();
         result = 31 * result + position.hashCode();
         result = 31 * result + direction.hashCode();
         return result;

src/test/java/com/sk89q/worldedit/util/LocationTest.java

@@ -38,7 +38,7 @@ public class LocationTest {
     public void testGetWorld() throws Exception {
         World world = mock(World.class);
         Location location = new Location(world);
-        assertEquals(world, location.getWorld());
+        assertEquals(world, location.getExtent());
     }
 
     @Test
@@ -46,9 +46,9 @@ public class LocationTest {
         World world1 = mock(World.class);
         World world2 = mock(World.class);
         Location location1 = new Location(world1);
-        Location location2 = location1.setWorld(world2);
-        assertEquals(world1, location1.getWorld());
-        assertEquals(world2, location2.getWorld());
+        Location location2 = location1.setExtent(world2);
+        assertEquals(world1, location1.getExtent());
+        assertEquals(world2, location2.getExtent());
     }
 
     @Test