/// <summary>
/// Queries how wide the entry is, used for centering on the screen.
/// </summary>
public virtual int GetWidth(MenuScreen screen)
{
System.Diagnostics.Debug.Assert(Font != null, "Font is null!");
if (Font != null)
{
return (int)(Font.MeasureString(Text).X * SeparationScale);
}
else
{
System.Diagnostics.Debug.Assert(ScreenManager.FontNormal != null, "Font Normal is null!");
return (int)(ScreenManager.FontNormal.MeasureString(Text).X * SeparationScale);
}
}
/// <summary>
/// Updates the menu entry.
/// </summary>
public virtual void Update(MenuScreen 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
// When the menu selection changes, entries gradually fade between
// their selected and deselected appearance, rather than instantly
// popping to the new state.
float fadeSpeed = (float)gameTime.ElapsedGameTime.TotalSeconds * 4;
if (isSelected)
selectionFade = Math.Min(selectionFade + fadeSpeed, 1);
else
selectionFade = Math.Max(selectionFade - fadeSpeed, 0);
}
/// <summary>
/// Draws the menu entry. This can be overridden to customize the appearance.
/// </summary>
public virtual void Draw(MenuScreen 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
// Pulsate the size of the selected menu entry.
double time = gameTime.TotalGameTime.TotalSeconds;
float pulsate = (float)Math.Sin(time * 6) + 1;
//float scale = SeparationScale + pulsate * 0.05f * selectionFade;
float scale = 1f + pulsate * 0.05f * selectionFade;
if (IsLink || IsTitle)
{
isSelected = true;
scale *= 1.2f;
}
// Draw the selected entry in yellow, otherwise white.
Color color = isSelected ? Color.Yellow : Color.White;
// 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;
Vector2 origin = new Vector2(0, Font.LineSpacing / 2);
spriteBatch.DrawString(Font, text, new Vector2(position.X + 2, position.Y + 2), Color.Black, 0,
origin, scale, SpriteEffects.None, 0);
spriteBatch.DrawString(Font, text, position, color, 0,
origin, scale, SpriteEffects.None, 0);
}