/// <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;
spriteBatch.Begin();
#if IPHONE
var screenSize = new Vector2(ScreenManager.Graphics.PreferredBackBufferWidth, ScreenManager.Graphics.PreferredBackBufferHeight);
#else
var screenSize = new Vector2(ScreenManager.GraphicsDevice.Viewport.Width, ScreenManager.GraphicsDevice.Viewport.Height);
#endif
if (_background != null)
{
spriteBatch.Draw(_background, screenSize / 2, null, Color.White, 0, new Vector2(_background.Width, _background.Height) / 2, 1, SpriteEffects.None, 0);
}
if (_showText)
{
SpriteFont font = ScreenManager.Font;
const string message = "Loading...";
// Center the text in the screen.
Vector2 textSize = font.MeasureString(message);
Vector2 textPosition = (screenSize - textSize) / 2;
#if SILVERLIGHT
var color = new Color(Color.White, MathHelper.Clamp(TransitionAlpha, 0, 1));
#else
var color = Color.White * TransitionAlpha;
#endif
// Draw the text.
spriteBatch.DrawString(font, message, textPosition, color);
}
spriteBatch.End();
// Fix for Silversprite
spriteBatch.Begin();
spriteBatch.End();
if (_fadeBackBufferToWhiteAlpha > 0)
{
ScreenManager.FadeBackBufferToWhite(_fadeBackBufferToWhiteAlpha);
}
}
}
