/// <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 bool Collides(Vector2 point, GameScreen screen)
{
this.size = new Vector2
{
X = this.GetWidth(screen),
Y = this.GetHeight(screen)
};
var rect = new Rectangle
{
X = (int)this.position.X,
Y = (int)this.position.Y,
Width = (int)this.size.X,
Height = (int)this.size.Y
};
return rect.Contains(new Point((int)point.X, (int)point.Y));
}
/// <summary>
/// Constructs a new menu entry with the specified text.
/// </summary>
public MenuEntry(string text, GameScreen screen)
{
this.text = text;
}
/// <summary>
/// Queries how wide the entry is, used for centering on the screen.
/// </summary>
public virtual int GetWidth(GameScreen screen)
{
return (int)screen.ScreenManager.Font.MeasureString(Text).X;
}
/// <summary>
/// Queries how much space this menu entry requires.
/// </summary>
public virtual int GetHeight(GameScreen screen)
{
return screen.ScreenManager.Font.LineSpacing;
}
/// <summary>
/// Draws the menu entry. This can be overridden to customize the appearance.
/// </summary>
public virtual void Draw(GameScreen screen, bool isSelected, GameTime gameTime)
{
// there is no such thing as a selected item on Windows Phone, so we always
// force isSelected to be false
#if WINDOWS_PHONE
isSelected = false;
#endif
// Draw the selected entry in yellow, otherwise white.
Color color = isSelected ? Color.Yellow : Color.White;
// Pulsate the size of the selected menu entry.
double time = gameTime.TotalGameTime.TotalSeconds;
float pulsate = (float)Math.Sin(time * 6) + 1;
float scale = 1 + pulsate * 0.05f * selectionFade;
// Modify the alpha to fade text out during transitions.
color *= screen.TransitionAlpha;
// Draw text, centered on the middle of each line.
ScreenManager screenManager = screen.ScreenManager;
SpriteBatch spriteBatch = screenManager.SpriteBatch;
SpriteFont font = screen.screenManager.Content.Load<SpriteFont>("systemfont"); ;
Vector2 origin = new Vector2(0, font.LineSpacing / 2);
spriteBatch.DrawString(font, text, position, color, 0,
origin, scale, SpriteEffects.None, 0);
}
/// <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);
// if there is a screen still in the manager, update TouchPanel
// to respond to gestures that screen is interested in.
if (screens.Count > 0)
{
TouchPanel.EnabledGestures = screens[screens.Count - 1].EnabledGestures;
}
}
/// <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);
// update the TouchPanel to respond to gestures this screen is interested in
TouchPanel.EnabledGestures = screen.EnabledGestures;
}