/// <summary>
/// Update the menu.
/// </summary>
/// <param name="gameTime"></param>
/// <param name="keyState"></param>
/// <param name="prevState"></param>
public void Update(GameTime gameTime, KeyboardState keyState, KeyboardState prevState)
{
// If we are moving down an item.
if ( (keyState.IsKeyDown(Keys.S) && prevState.IsKeyUp(Keys.S))
|| (keyState.IsKeyDown(Keys.Down) && prevState.IsKeyUp(Keys.Down)))
{
if (lMenuItems.IndexOf(miSelected) == lMenuItems.Count - 1)
{
miSelected.Scale = 1.0f;
miSelected = lMenuItems[0];
}
else
{
miSelected.Scale = 1.0f;
miSelected = lMenuItems[lMenuItems.IndexOf(miSelected) + 1];
}
}
// If we are moving up an item.
else if ( (keyState.IsKeyDown(Keys.W) && prevState.IsKeyUp(Keys.W))
|| (keyState.IsKeyDown(Keys.Up) && prevState.IsKeyUp(Keys.Up)))
{
if (lMenuItems.IndexOf(miSelected) == 0)
{
miSelected.Scale = 1.0f;
miSelected = lMenuItems[lMenuItems.Count - 1];
}
else
{
miSelected.Scale = 1.0f;
miSelected = lMenuItems[lMenuItems.IndexOf(miSelected) - 1];
}
}
// If we are selecting an item.
else if (keyState.IsKeyDown(Keys.Enter) && prevState.IsKeyUp(Keys.Enter) && prevState != null )
{
miSelected.SelectEvent.Invoke(this, new EventArgs());
return;
}
// If we are backing out of the menu.
else if (keyState.IsKeyDown(Keys.Back) && prevState.IsKeyUp(Keys.Back) && prevState != null)
{
// A backspace event is not required for a menu to have, so only do it if it was specified.
if (BackOutEvent != null)
BackOutEvent.Invoke(this, new EventArgs());
return;
}
// Pulse the selected item.
UpdatePulse(gameTime);
TransitionEnter.Update(gameTime);
TransitionExit.Update(gameTime);
}
/// <summary>
/// Load the content for the menu
/// </summary>
/// <param name="contentManager">The content manager.</param>
/// <param name="options">The names of the options.</param>
/// <param name="handlers">The event that is fired when the corrosponding option is selected.</param>
public void LoadContent(ContentManager contentManager, string[] options, EventHandler[] handlers)
{
lMenuItems = new List<MenuItem>();
for (int i = 0; i < options.Length; i++)
{
MenuItem item = new MenuItem(handlers[i], options[i]);
item.LoadContent(contentManager);
item.Position.Y = i * Spacing; // distance apart, default 64
item.Position += vPosition; // Can be specified, 0 otherwise
lMenuItems.Add(item);
}
miSelected = lMenuItems[0];
// Set up the border/background and set default color to white.
border.LoadContent(contentManager);
CalculateBorders();
border.SetColors(Gradients.WhiteGradient);
border.Thickness = 2;
TransitionEnter = new MenuTransition(MenuTransition.TransitionStyle.FLY_IN_TOP, this);
TransitionExit = new MenuTransition(MenuTransition.TransitionStyle.FADE_OUT, this);
}