public void OnTriggerEnter(Collider other)
 {
     if ((LMask & 1 << other.gameObject.layer) == 1 << other.gameObject.layer)
     {
         Debug.Log("Direction change - adjusting rotation");
         CollisionDetection CDet = other.GetComponent <CollisionDetection>();
         CDet.ChangeDir(TunnelDir);
         GMng.TunnelSystemsSolved++;
     }
 }