void OnTriggerEnter2D(Collider2D c)
    {
        Ball ball = c.GetComponent <Ball> ();

        if (ball != null)
        {
            Ball.ResetAndPositionAt(
                BallManager.StaticInstance.transform.parent.transform,
                ball,
                Vector3.zero
                );

            WallManager.BallEnteredScoreZone(AttackingPlayer);
        }
    }