public void Push(IGameScreen gameScreen)
        {
            if (_gameScreens.Count > 0)
            {
                ActiveGameScreen.Deactivate();
            }
            _gameScreens.Push(gameScreen);

            gameScreen.Activate();
        }
        public void Push(IGameScreen gameScreen)
        {
            if (_gameScreens.Count > 0)
            {
                ActiveGameScreen.Deactivate();
            }
            _gameScreens.Push(gameScreen);

            gameScreen.Activate();


        }