/// <summary>
/// Allows the screen the chance to position the menu entries. By default
/// all menu entries are lined up in a vertical list, centered on the screen.
/// </summary>
protected virtual void UpdateMenuEntryLocations()
{
// Make the menu slide into place during transitions, using a
// power curve to make things look more interesting (this makes
// the movement slow down as it nears the end).
float transitionOffset = (float)Math.Pow(TransitionPosition, 2);
// start at Y = 175; each X value is generated per entry
Vector2 position = new Vector2(0f, 175f);
// update each menu entry's location in turn
for (int i = 0; i < menuEntries.Count; i++)
{
MenuEntry menuEntry = menuEntries[i];
// each entry is to be centered horizontally
position.X = ScreenManager.GraphicsDevice.Viewport.Width / 2 - menuEntry.GetWidth(this) / 2;
if (ScreenState == ScreenState.TransitionOn)
{
position.X -= transitionOffset * 256;
}
else
{
position.X += transitionOffset * 512;
}
// set the entry's position
menuEntry.Position = position;
// move down for the next entry the size of this entry plus our padding
position.Y += menuEntry.GetHeight(this) + (menuEntryPadding * 2);
}
}
/// <summary>
/// Allows the screen to create the hit bounds for a particular menu entry.
/// </summary>
protected virtual Rectangle GetMenuEntryHitBounds(MenuEntry entry)
{
// the hit bounds are the entire width of the screen, and the height of the entry
// with some additional padding above and below.
return(new Rectangle(
0,
(int)entry.Position.Y - menuEntryPadding,
ScreenManager.GraphicsDevice.Viewport.Width,
entry.GetHeight(this) + (menuEntryPadding * 2)));
}
/// <summary>
/// Allows the screen to create the hit bounds for a particular menu entry.
/// </summary>
protected virtual Rectangle GetMenuEntryHitBounds(MenuEntry entry)
{
// the hit bounds are the entire width of the screen, and the height of the entry
// with some additional padding above and below.
return new Rectangle(
0,
(int)entry.Position.Y - menuEntryPadding,
ScreenManager.GraphicsDevice.Viewport.Width,
entry.GetHeight(this) + (menuEntryPadding * 2));
}
