private void OnCollisionExit(Collision collision)
 {
     //Debug.Log(entity.name + " exited from with " + collision.gameObject.name);
     if (collision.collider.gameObject == Ethan)
     {
         entityUAI.StopAndRemoveAllCommands();
         entity.speed = entity.desiredSpeed = 0;
         entity.GetComponent <AudioSource>().Stop();
         LevelMgr.inst.UpdateHealth(entity);
     }
 }