public ScreenManager()
{
mScreens = new List<Screen>();
GameScreen gameScreen = new GameScreen();
MenuScreen menuScreen = new MenuScreen();
mCurrentScreen = gameScreen;
AddScreen(menuScreen);
AddScreen(gameScreen);
mScreenState = ScreenState.Playing;
}
private void ListenForScreenEvents()
{
if(Keyboard.GetState().IsKeyDown(Keys.Escape) && mPreviousKeyboardState.IsKeyUp(Keys.Escape))
{
if(mScreenState == ScreenState.Playing)
{
mScreenState = ScreenState.Paused;
mCurrentScreen = mScreens.Where(s => s.GetType() == typeof(MenuScreen)).Select(s => s as MenuScreen).FirstOrDefault();
}
else if(mScreenState == ScreenState.Paused)
{
mScreenState = ScreenState.Playing;
mCurrentScreen = mScreens.Where(s => s.GetType() == typeof(GameScreen)).Select(s => s as GameScreen).FirstOrDefault();
}
}
mPreviousKeyboardState = Keyboard.GetState();
}
public void RemoveScreen(Screen screen)
{
mScreens.Remove(screen);
}
public void AddScreen(Screen screen)
{
mScreens.Add(screen);
}