Fixed a bunch of multiworld issues (entity tracking etc)

src/main/java/net/minecraft/server/MinecraftServer.java

@@ -51,7 +51,7 @@ public class MinecraftServer implements Runnable, ICommandListener {
 
     // CraftBukkit start
     public int spawnProtection;
-    public List<WorldServer> worlds = new ArrayList<WorldServer>(); // TODO - REPLACE ABOVE
+    public List<WorldServer> worlds = new ArrayList<WorldServer>();
     public CraftServer server;
     public OptionSet options;
     public ColouredConsoleSender console;
@@ -461,7 +461,15 @@ public class MinecraftServer implements Runnable, ICommandListener {
     }
 
     public WorldServer a(int i) {
-        return i == -1 ? this.worlds.get(1) : this.worlds.get(0); // Craftbukkit
+        // Craftbukkit start
+        for (WorldServer world : worlds) {
+            if (world.dimension == i) {
+                return world;
+            }
+        }
+        
+        return worlds.get(0);
+        // Craftbukkit end
     }
 
     public EntityTracker b(int i) {

src/main/java/net/minecraft/server/ServerConfigurationManager.java

@@ -29,7 +29,7 @@ public class ServerConfigurationManager {
     public static Logger a = Logger.getLogger("Minecraft");
     public List players = new ArrayList();
     public MinecraftServer server; // CraftBukkit - private -> public
-    private PlayerManager[] d = new PlayerManager[2];
+    // private PlayerManager[] d = new PlayerManager[2]; // Craftbukkit - removed
     public int maxPlayers; // CraftBukkit - private -> public
     private Set banByName = new HashSet();
     private Set banByIP = new HashSet();
@@ -58,8 +58,7 @@ public class ServerConfigurationManager {
         this.m = minecraftserver.a("white-list.txt");
         int i = minecraftserver.propertyManager.getInt("view-distance", 10);
 
-        this.d[0] = new PlayerManager(minecraftserver, 0, i);
-        this.d[1] = new PlayerManager(minecraftserver, -1, i);
+        // Craftbukkit - removed playermanagers
         this.maxPlayers = minecraftserver.propertyManager.getInt("max-players", 20);
         this.o = minecraftserver.propertyManager.getBoolean("white-list", false);
         this.g();
@@ -78,8 +77,7 @@ public class ServerConfigurationManager {
     }
 
     public void a(EntityPlayer entityplayer) {
-        this.d[0].removePlayer(entityplayer);
-        this.d[1].removePlayer(entityplayer);
+        // Craftbukkit - removed playermanagers
         this.a(entityplayer.dimension).addPlayer(entityplayer);
         WorldServer worldserver = this.server.a(entityplayer.dimension);
 
@@ -87,11 +85,17 @@ public class ServerConfigurationManager {
     }
 
     public int a() {
-        return this.d[0].c();
+        // Craftbukkit start
+        if (this.server.worlds.size() == 0) {
+            return this.server.propertyManager.getInt("view-distance", 10) * 16 - 16;
+        } else {
+            return this.server.worlds.get(0).manager.c();
+        }
+        // Craftbukkit end
     }
 
     private PlayerManager a(int i) {
-        return i == -1 ? this.d[1] : this.d[0];
+        return server.a(i).manager; // Craftbukkit
     }
 
     public void b(EntityPlayer entityplayer) {
@@ -241,7 +245,7 @@ public class ServerConfigurationManager {
             entityplayer1.setPosition(entityplayer1.locX, entityplayer1.locY + 1.0D, entityplayer1.locZ);
         }
 
-        entityplayer1.netServerHandler.sendPacket(new Packet9Respawn((byte) entityplayer1.dimension));
+        entityplayer1.netServerHandler.sendPacket(new Packet9Respawn((byte) ((WorldServer)entityplayer1.world).getWorld().getEnvironment().getId()));
         entityplayer1.netServerHandler.a(entityplayer1.locX, entityplayer1.locY, entityplayer1.locZ, entityplayer1.yaw, entityplayer1.pitch);
         this.a(entityplayer1, worldserver);
         this.a(entityplayer1.dimension).addPlayer(entityplayer1);
@@ -266,7 +270,8 @@ public class ServerConfigurationManager {
         entityplayer.dimension = b0;
         WorldServer worldserver1 = this.server.a(entityplayer.dimension);
 
-        entityplayer.netServerHandler.sendPacket(new Packet9Respawn((byte) entityplayer.dimension));
+        // Craftbukkit
+        entityplayer.netServerHandler.sendPacket(new Packet9Respawn((byte) ((WorldServer)entityplayer.world).getWorld().getEnvironment().getId()));
         worldserver.removeEntity(entityplayer);
         entityplayer.dead = false;
         double d0 = entityplayer.locX;
@@ -306,9 +311,11 @@ public class ServerConfigurationManager {
     }
 
     public void b() {
-        for (int i = 0; i < this.d.length; ++i) {
-            this.d[i].flush();
+        // Craftbukkit start
+        for (int i = 0; i < this.server.worlds.size(); ++i) {
+            this.server.worlds.get(i).manager.flush();
         }
+        // Craftbukkit end
     }
 
     public void flagDirty(int i, int j, int k, int l) {

src/main/java/net/minecraft/server/WorldServer.java

@@ -27,12 +27,14 @@ public class WorldServer extends World implements BlockChangeDelegate {
         this.cserver = minecraftserver.server;
         this.world = new CraftWorld(this);
         this.pvpMode = minecraftserver.pvpMode;
+        this.manager = new PlayerManager(minecraftserver, dimension, minecraftserver.propertyManager.getInt("view-distance", 10));
     }
 
     public final int dimension;
     private final CraftWorld world;
     private final CraftServer cserver;
     public EntityTracker tracker;
+    public PlayerManager manager;
 
     public CraftWorld getWorld() {
         return world;

src/main/java/org/bukkit/craftbukkit/CraftServer.java

@@ -287,7 +287,7 @@ public final class CraftServer implements Server {
         }
 
         // See if the server can process this command
-        return console.consoleCommandHandler.handle(new ServerCommand(commandLine, new ServerCommandListener(sender)));
+        return console.consoleCommandHandler.handle(new ServerCommand(commandLine, (ICommandListener)new ServerCommandListener(sender)));
     }
 
     public void reload() {
@@ -366,10 +366,11 @@ public final class CraftServer implements Server {
             converter.convert(name, new ConvertProgressUpdater(console));
         }
 
-        WorldServer internal = new WorldServer(console, new ServerNBTManager(new File("."), name, true), name, environment.getId(), seed);
+        int dimension = environment.getId() + 200 + console.worlds.size();
+        WorldServer internal = new WorldServer(console, new ServerNBTManager(new File("."), name, true), name, dimension, seed);
         internal.z = console.worlds.get(0).z;
 
-        internal.tracker = new EntityTracker(console, environment.getId());
+        internal.tracker = new EntityTracker(console, dimension);
         internal.addIWorldAccess((IWorldAccess)new WorldManager(console, internal));
         internal.spawnMonsters = 1;
         internal.setSpawnFlags(true, true);

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -173,11 +173,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
         if (oldWorld != newWorld) {
             entity.dimension = newWorld.dimension;
-            entity.netServerHandler.sendPacket(new Packet9Respawn((byte) entity.dimension));
+            entity.netServerHandler.sendPacket(new Packet9Respawn((byte) location.getWorld().getEnvironment().getId()));
             oldWorld.removeEntity(entity);
             entity.dead = false;
 
+            entity.setPositionRotation(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
             if (entity.Q()) {
+                oldWorld.entityJoinedWorld(entity, false);
                 newWorld.addEntity(entity);
                 entity.setPositionRotation(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
                 newWorld.entityJoinedWorld(entity, false);