/// <summary>
/// Responds to user input, changing the selected entry and accepting
/// or cancelling the menu.
/// </summary>
public override void HandleInput(InputHelper input, GameTime gameTime)
{
// Mouse on a menu item
_hoverEntry = GetMenuEntryAt(input.Cursor);
// Accept or cancel the menu?
if (input.IsMenuSelect())
{
if (GetPreviewCollision(input.Cursor))
{
if (_menuEntries[_selectedEntry].Screen != null)
{
Framework.AddScreen(_menuEntries[_selectedEntry].Screen);
Framework.AddScreen(new DescriptionBoxScreen((_menuEntries[_selectedEntry].Screen as PhysicsDemoScreen).GetDetails()));
ContentWrapper.PlaySoundEffect("Click");
}
}
if (_hoverEntry != -1)
{
if (_selectedEntry == _hoverEntry)
{
if (_menuEntries[_selectedEntry].Screen != null)
{
Framework.AddScreen(_menuEntries[_selectedEntry].Screen);
Framework.AddScreen(new DescriptionBoxScreen((_menuEntries[_selectedEntry].Screen as PhysicsDemoScreen).GetDetails()));
ContentWrapper.PlaySoundEffect("Click");
}
}
else
{
_selectedEntry = _hoverEntry;
}
}
}
if (GetSliderCollision(input.Cursor))
{
_scrollHover = true;
if (input.IsMenuHold())
{
_scrollLock = true;
}
}
else
{
_scrollHover = false;
}
if (input.IsMenuRelease())
{
_scrollLock = false;
}
if (_scrollLock)
{
_menuOffset = (int)Math.Round((MathHelper.Clamp(input.Cursor.Y, _menuStart, _menuStart + _menuSpacing * (NumEntries - 1)) - _menuStart) / _scrollSpacing);
UpdateMenuPositions();
}
if (input.IsScreenExit())
{
Framework.ExitGame();
}
if (input.IsMenuDown())
{
_menuOffset++;
UpdateMenuPositions();
}
if (input.IsMenuUp())
{
_menuOffset--;
UpdateMenuPositions();
}
}