fix pets and siege engines

src/engine/Enum.java

@@ -2855,7 +2855,8 @@ public class Enum {
         GuardWallArcher(null, false, true, false, false, false),
         Wanderer(null, false, true, true, false, false),
         HamletGuard(null, false, true, false, false, false),
-        AggroWanderer(null, false, false, true, false, false);
+        AggroWanderer(null, false, false, true, false, false),
+        Siege(null, false, false, false, false, false),
 
         private static HashMap<Integer, MobBehaviourType> _behaviourTypes = new HashMap<>();
         public MobBehaviourType BehaviourHelperType;

src/engine/mobileAI/MobAI.java

@@ -685,6 +685,8 @@ public class MobAI {
                     break;
                 case Pet1:
                     PetLogic(mob);
+                case Siege:
+                    PetLogic(mob);
                     break;
                 case HamletGuard:
                     HamletGuardLogic(mob);

src/engine/objects/Mob.java

@@ -849,8 +849,7 @@ public class Mob extends AbstractIntelligenceAgent {
         owner.getSiegeMinionMap().put(mob, slot);
 
         mob.setNpcOwner(owner);
-        mob.BehaviourType = MobBehaviourType.Pet1;
-        mob.BehaviourType.canRoam = false;
+        mob.BehaviourType = MobBehaviourType.Siege;
         return mob;
     }