public void OnTriggerExit(Collider other)
    {
        if (other.tag == "tiles")
        {
            //Destroy(other.gameObject);
            other.transform.position = new Vector3(0, -2000, 0);

            int count = tileManager.getAliveTilesCount();
            if (count <= 0)
            {
                tileManager.notifyUpdateTilemap();
            }
        }
    }