/// <summary>
/// Konstruktor jest prywatny, bo LoadingScreen powinno być aktywowane tylko
/// przez metodę statyczną Load.
/// </summary>
private LoadingScreen(ScreenManager screenManager, bool loadingIsSlow, GameScreen[] screensToLoad)
{
this.loadingIsSlow = loadingIsSlow;
this.screensToLoad = screensToLoad;
TransitionOnTime = TimeSpan.FromSeconds(0.5);
}
/// <summary>
/// Draw
/// </summary>
public virtual void Draw(GameScreen screen, bool isSelected, GameTime gameTime)
{
Color color = isSelected ? Color.OrangeRed : Color.Black;
double time = gameTime.TotalGameTime.TotalSeconds;
float pulsate = (float)Math.Sin(time * 6) + 1;
float scale = 1 + pulsate * 0.05f * selectionFade;
color *= screen.TransitionAlpha;
ScreenManager screenManager = screen.ScreenManager;
SpriteBatch spriteBatch = screenManager.SpriteBatch;
SpriteFont font = screenManager.Font;
Vector2 origin = new Vector2(0, font.LineSpacing / 2);
spriteBatch.DrawString(font, text, position, color, 0, origin, scale, SpriteEffects.None, 0);
}
/// <summary>
/// Update
/// </summary>
public virtual void Update(GameScreen screen, bool isSelected, GameTime gameTime)
{
float fadeSpeed = (float)gameTime.ElapsedGameTime.TotalSeconds * 4;
if (isSelected)
selectionFade = Math.Min(selectionFade + fadeSpeed, 1);
else
selectionFade = Math.Max(selectionFade - fadeSpeed, 0);
}
/// <summary>
/// Usuwanie warstwy z listy. Raczej powinno u¿ywaæ siê
/// GameScreen.ExitScreen ¿eby warstwa mia³a czas na uruchomienie
/// efektu TransitionOff
/// </summary>
public void RemoveScreen(GameScreen screen)
{
if (isInitialized)
{
screen.UnloadContent();
}
screens.Remove(screen);
screensToUpdate.Remove(screen);
}
/// <summary>
/// Dodawanie nowej warstwy do listy
/// </summary>
public void AddScreen(GameScreen screen)
{
screen.ScreenManager = this;
screen.IsExiting = false;
if (isInitialized)
{
screen.LoadContent();
}
screens.Add(screen);
}