guards and siege engines ignore idle state with no players loaded

src/engine/mobileAI/MobAI.java

@@ -582,8 +582,9 @@ public class MobAI {
             boolean bypassLoadedPlayerCheck = false;
             if(mob.isPlayerGuard() || mob.isSiege()) {
                 bypassLoadedPlayerCheck = true;
-                if(mob.combatTarget != null && !mob.playerAgroMap.containsKey(mob.combatTarget.getObjectUUID()) && mob.combatTarget.getObjectType().equals(Enum.GameObjectType.PlayerCharacter))
-                    mob.setCombatTarget(null);
+                if(mob.combatTarget != null && mob.combatTarget.getObjectType().equals(Enum.GameObjectType.PlayerCharacter))
+                    if(mob.combatTarget.loc.distanceSquared(mob.loc) > 10000)
+                        mob.setCombatTarget(null);
             }
 
             if (mob.playerAgroMap.isEmpty() && !bypassLoadedPlayerCheck) {