/// <summary> /// Draws the menu entry. This can be overridden to customize the appearance. /// </summary> public virtual void Draw(MenuScreen screen, Vector2 position, bool isSelected, GameTime gameTime) { // Draw the selected entry in yellow, otherwise white. Color buttonColor = isSelected ? Color.OrangeRed : Color.WhiteSmoke; Color textColor = isSelected ? Color.Blue : Color.White; // Pulsate the size of the selected menu entry. double time = gameTime.TotalGameTime.TotalSeconds; float pulsate = (float)Math.Cos(time * 6) + 1; float scale = 1 + pulsate * 0.02f * selectionFade; // Modify the alpha to fade text out during transitions. textColor = new Color(textColor.R, textColor.G, textColor.B, screen.TransitionAlpha); buttonColor = new Color(buttonColor.R, buttonColor.G, buttonColor.B, screen.TransitionAlpha); // Draw text, centered on the middle of each line. ScreenManager screenManager = screen.ScreenManager; SpriteBatch spriteBatch = screenManager.SpriteBatch; SpriteFont font = screenManager.Font; Vector2 origin = new Vector2(0, font.LineSpacing / 2); switch (text) { case "New Game": spriteBatch.Draw(MainMenuScreen.textNG, position, null, buttonColor, 0, origin, scale, SpriteEffects.None, 0); break; case "Load Game": spriteBatch.Draw(MainMenuScreen.textLG, position, null, buttonColor, 0, origin, scale, SpriteEffects.None, 0); break; case "Options": spriteBatch.Draw(MainMenuScreen.textOp, position, null, buttonColor, 0, origin, scale, SpriteEffects.None, 0);; break; case "Credits": spriteBatch.Draw(MainMenuScreen.textCr, position, null, buttonColor, 0, origin, scale, SpriteEffects.None, 0); break; case "Exit": spriteBatch.Draw(MainMenuScreen.textEx, position, null, buttonColor, 0, origin, scale, SpriteEffects.None, 0); break; default: break; } }
/// <summary> /// Updates the menu entry. /// </summary> public virtual void Update(MenuScreen screen, bool isSelected, GameTime gameTime) { // 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> /// Queries how much space this menu entry requires. /// </summary> public virtual int GetHeight(MenuScreen screen) { return screen.ScreenManager.Font.LineSpacing; }