IEnumerator SpawnFireBall()
    {
        if (ball != null)
        {
            while (true)
            {
                yield return(new WaitForSeconds(Level.GetFireBallSpawnSeconds()));

                if (ball != null)
                {
                    Vector2 FireBallPos = new Vector2(ball.transform.position.x, 6.0f);
                    FindObjectOfType <AudioManager>().Play("FireballSFX");
                    fireBall = Instantiate(fireball, FireBallPos, Quaternion.identity);
                }
            }
        }
        else
        {
            yield return(null);
        }
    }