void OnTriggerEnter2D(Collider2D other)
 {
     if (_destroyAll)
     {
         Destroy(other.gameObject);
     }
     else
     {
         if (other.gameObject.tag.ToLower() == "taptile")
         {
             TileItem objTileItem = GameObject.Find("BlackTile").GetComponent <TileItem> ();
             StartCoroutine(objTileItem.TriggerGameOver());
         }
     }
     Destroy(other.gameObject);
 }