void OnTriggerEnter2D(Collider2D col)
    {
        ball = col.gameObject.GetComponent <BallController>();

        if (catchBall && ball && !holdingBall)
        {
            holdingBall = true;
            ball.Caught(this);
        }

        if (isAI)
        {
            aIHitCount++;
            print(aIHitCount);
        }
    }