/// <summary>
/// Spawns a ball and triggers GameEventManager.OnNewBall event
/// </summary>
public void SpawnBall()
{
// create first ball.
GameObject ballGO = GameObject.Instantiate(BallPrefab);
// trigger event
EventMngr.BroadcastBallSpawnEvent(ballGO.GetComponent <PingPongBall>());
}
