private void Start()
{
HUD.Score = 0;
HUD.ballsLeft = 5;
GameObject ballTemp = Instantiate(ball, Vector3.zero, Quaternion.identity);
boxCol2D = ballTemp.GetComponent <BoxCollider2D>();
colliderLowerLeft = (Vector2)transform.position - new Vector2(boxCol2D.size.x / 2, boxCol2D.size.y / 2);
colliderUpperRight = (Vector2)transform.position + new Vector2(boxCol2D.size.x / 2, boxCol2D.size.y / 2);
Destroy(ballTemp);
EventManager.AddBallDiesListener(SpawnABall);
spawnSeconds = gameObject.AddComponent <Timer>();
SpawnBallAndResetTimer();
spawnSeconds.AddTimerFinishedEventListener(SpawnBallAndResetTimer);
}