/// <summary>
/// Updates the Entity.
/// </summary>
/// <param name="graphics">The graphics.</param>
/// <param name="input">The input.</param>
/// <param name="delta">The delta.</param>
public void Update(GraphicsDevice graphics, Input input, long delta)
{
MenuScreen screen = Screens[SelectedMenuScreen];
int max = (Screens[SelectedMenuScreen] == Screens[MainMenuIndex])
? screen.Elements.Count
: screen.Elements.Count + 1;
if (input.Down())
{
if (_down == false)
{
_down = true;
_menuMove.Play();
screen.SelectedIndex += 1;
if (screen.SelectedIndex >= max)
{
screen.SelectedIndex = 0;
}
}
}
else
{
_down = false;
}
if (input.Up())
{
if (_up == false)
{
_up = true;
_menuMove.Play();
screen.SelectedIndex -= 1;
if (screen.SelectedIndex < 0)
{
screen.SelectedIndex = max - 1;
}
}
}
else
{
_up = false;
}
if (input.Fire())
{
if (_enter == false)
{
_enter = true;
Action[] actions = screen.Elements.Values.ToArray();
if (screen.SelectedIndex == actions.Count())
{
_menuBack.Play();
SelectedMenuScreen = screen.Parent == null ? MainMenuIndex : Screens.IndexOf(screen.Parent);
}
else
{
Action action = screen.Elements.Values.ToArray()[screen.SelectedIndex];
if (action != null)
{
_menuSelect.Play();
action();
}
}
}
}
else
{
_enter = false;
}
if (input.Escape())
{
if (_escape == false)
{
_escape = true;
if (screen.Parent != null)
{
_menuBack.Play();
SelectedMenuScreen = Screens.IndexOf(screen.Parent);
}
else if (screen != Screens[MainMenuIndex])
{
_menuBack.Play();
SelectedMenuScreen = MainMenuIndex;
}
}
}
else
{
_escape = false;
}
}
