void OnTriggerEnter2D(Collider2D col)
    {
        Destroy(gameObject, 0.1f);
        DarknessOverlay darknessOverlay = (DarknessOverlay)GameObject.Find("Game_Manager").GetComponent <Game>().darknessOverlayScript;
        float           curTransparency = darknessOverlay.getTransparency();

        if (curTransparency > 0.10f)
        {
            darknessOverlay.setTransparency(curTransparency - 0.10f);
        }
    }