void OnCollisionEnter(Collision col)
    {
        if (rend.isVisible == false && onlyPlayIfVisible == true)
        {
            return;
        }

        if (col.gameObject.tag == "Floor")
        {
            playSounds.PlayFloorSound();
        }
        else if (col.gameObject.tag == "Ball")
        {
            playSounds.PlayBallSound();
        }
    }