public void RemoveState(AState state)
{
state.Pause();
state.Stop();
states.Remove(state);
if (states.Count == 0)
game.Exit();
states.Last().Resume();
}
//Add a new state and use that one from now on
public void PushState(AState state)
{
if (states.Count != 0)
states.Last().Pause();
state.Initialize();
state.Start();
state.Resume();
states.Add(state);
}