hellgates maybe?

src/engine/objects/Mob.java

@@ -87,7 +87,7 @@ public class Mob extends AbstractIntelligenceAgent {
     protected int loadID;
     protected float spawnRadius;
     //used by static mobs
-    protected int parentZoneID;
+    public int parentZoneID;
     protected float statLat;
     protected float statLon;
     protected float statAlt;