private ScreenManager()
{
Dimesions = new Vector2(640, 480);
currentScreen = new SplashScreen();
xmlGameScreenManager.ThisType = currentScreen.ThisType;
currentScreen = xmlGameScreenManager.Load("Load/SplashScreen.xml");
}
/// <summary>
/// The constructor is private: loading screens should
/// be activated via the static Load method instead.
/// </summary>
private LoadingScreen(ScreenManager screenManager, bool loadingIsSlow,
GameScreen[] screensToLoad)
{
this.loadingIsSlow = loadingIsSlow;
this.screensToLoad = screensToLoad;
TransitionOnTime = TimeSpan.FromSeconds(0.5);
}
public void ChangeScreens(string screenName)
{
newScreen = (GameScreen)Activator.CreateInstance(Type.GetType("SimpleGame." + screenName));
image.IsActive = true;
image.fadeEffect.Increase = true;
image.Alpha = 0.0f;
IsTransitioning = true;
}
void Transition(GameTime gameTime)
{
if (IsTransitioning)
{
image.Update(gameTime);
if (image.Alpha == 1.0f)
{
currentScreen.UnloadContent();
currentScreen = newScreen;
xmlGameScreenManager.ThisType = currentScreen.ThisType;
if (File.Exists(currentScreen.XmlPath))
{
currentScreen = xmlGameScreenManager.Load(currentScreen.XmlPath);
}
currentScreen.LoadContent();
}
else if (image.Alpha == 0.0f)
{
image.IsActive = false;
IsTransitioning = false;
}
}
}
/// <summary>
/// Adds a new screen to the screen manager.
/// </summary>
public void AddScreen(GameScreen screen, PlayerIndex? controllingPlayer)
{
screen.ControllingPlayer = controllingPlayer;
screen.ScreenManager = this;
screen.IsExiting = false;
// If we have a graphics device, tell the screen to load content.
if (isInitialized) {
screen.LoadContent();
}
screens.Add(screen);
}
/// <summary>
/// Removes a screen from the screen manager. You should normally
/// use GameScreen.ExitScreen instead of calling this directly, so
/// the screen can gradually transition off rather than just being
/// instantly removed.
/// </summary>
public void RemoveScreen(GameScreen screen)
{
// If we have a graphics device, tell the screen to unload content.
if (isInitialized) {
screen.UnloadContent();
}
screens.Remove(screen);
screensToUpdate.Remove(screen);
}