public MainMenuScreen(int widthScreen, int heightScreen, IScreenMaster master)
            : base(widthScreen, heightScreen, master)
        {
            Texture2D up = Load<Texture2D>("Image/buttonUp");
            Texture2D down = Load<Texture2D>("Image/buttonDown");
            SpriteFont font = Load<SpriteFont>("Font/text");

            int centerX = widthScreen / 2 - up.Width / 2;
            int buttonStartY = heightScreen / 3;
            int buttonSpacing = 10;

            ColorRect c = new ColorRect(0, 0, widthScreen, heightScreen, Color.Black);
            bg = c;

            Label t = new Label(widthScreen / 2, 10, font, "Project: Height");
            t.x -= (int)t.GetDim().X / 2;
            title = t;

            Button newGame = new TextButton(centerX, buttonStartY, up, down, font, "New Game");
            Button loadGame = new TextButton(centerX, buttonStartY + up.Height + buttonSpacing, up, down, font, "Load Game");
            Button options = new TextButton(centerX, buttonStartY + 2 * (up.Height + buttonSpacing), up, down, font, "Options");

            newGame.select += delegate() { LevelLoader.Load(1); ChangeScreen<StoryScreen>(); };
            loadGame.select += delegate() { ChangeScreen<LoadGameScreen>(); };
            options.select += delegate() { ChangeScreen<OptionScreen>(); };

            buttons.Add(newGame);
            buttons.Add(loadGame);
            buttons.Add(options);
        }
        public OptionScreen(int widthScreen, int heightScreen, IScreenMaster master)
            : base(widthScreen, heightScreen, master)
        {
            Texture2D up = Load<Texture2D>("Image/buttonUp");
            Texture2D down = Load<Texture2D>("Image/buttonDown");
            SpriteFont font = Load<SpriteFont>("Font/text");

            int centerX = widthScreen / 2 - up.Width / 2;

            ColorRect c = new ColorRect(0, 0, widthScreen, heightScreen, Color.Black);
            bg = c;

            Label t = new Label(widthScreen / 2, 10, font, "Options");
            t.x -= (int) t.GetDim().X / 2;
            title = t;

            Button back = new TextButton(centerX, heightScreen - up.Height - 10, up, down, font, "Back");

            back.select += delegate() { ChangeScreen<MainMenuScreen>(); };

            buttons.Add(back);
        }