/// <summary>
/// Activates the loading screen.
/// </summary>
public static void Load(ScreenManager screenManager, bool loadingIsSlow,
params GameScreen[] screensToLoad)
{
// Tell all the current screens to transition off.
foreach (GameScreen screen in screenManager.GetScreens())
screen.ExitScreen();
// Create and activate the loading screen.
LoadingScreen loadingScreen = new LoadingScreen(screenManager,
loadingIsSlow,
screensToLoad);
screenManager.AddScreen(loadingScreen);
}
/// <summary>
/// Activates the loading screen.
/// </summary>
public static void Load(ScreenManager screenManager, bool loadingIsSlow,
params GameScreen[] screensToLoad)
{
// Tell all the current screens to transition off.
foreach (GameScreen screen in screenManager.GetScreens())
{
screen.ExitScreen();
}
// Create and activate the loading screen.
LoadingScreen loadingScreen = new LoadingScreen(screenManager,
loadingIsSlow,
screensToLoad);
screenManager.AddScreen(loadingScreen);
}
/// <summary>
/// Draws the loading screen.
/// </summary>
public override void Draw(GameTime gameTime)
{
// If we are the only active screen, that means all the previous screens
// must have finished transitioning off. We check for this in the Draw
// method, rather than in Update, because it isn't enough just for the
// screens to be gone: in order for the transition to look good we must
// have actually drawn a frame without them before we perform the load.
if ((ScreenState == ScreenState.Active) &&
(ScreenManager.GetScreens().Length == 1))
{
otherScreensAreGone = true;
}
// The gameplay screen takes a while to load, so we display a loading
// message while that is going on, but the menus load very quickly, and
// it would look silly if we flashed this up for just a fraction of a
// second while returning from the game to the menus. This parameter
// tells us how long the loading is going to take, so we know whether
// to bother drawing the message.
if (loadingIsSlow)
{
SpriteBatch spriteBatch = ScreenManager.SpriteBatch;
// Center the text in the viewport.
Viewport viewport = ScreenManager.GraphicsDevice.Viewport;
Vector2 viewportSize = new Vector2(viewport.Width, viewport.Height);
Color color = new Color(255, 255, 255, TransitionAlpha);
spriteBatch.Begin();
var position = new Vector2(loadingBlackTextureDestination.X, loadingBlackTextureDestination.Y);
spriteBatch.Draw(loadingBlackTexture, position, null, Color.White, 0f,
Vector2.Zero, ScaledVector2.DrawFactor, SpriteEffects.None, 0f);
spriteBatch.Draw(loadingTexture, loadingPosition, null, Color.White, 0f,
Vector2.Zero, ScaledVector2.DrawFactor, SpriteEffects.None, 0f);
spriteBatch.End();
}
}
