//-----------------------------------------------------------------------------
// Game::UnLoadContent()
// unload content (resources loaded above)
// unload all content that was loaded before the Engine Loop started
//-----------------------------------------------------------------------------
public override void UnLoadContent()
{
GameObjectMan.Destory();
ProxySpriteMan.Destory();
TimerMan.Destory();
SpriteBatchMan.Destory();
GameSpriteMan.Destory();
BoxSpriteMan.Destory();
ImageMan.Destory();
TextureMan.Destory();
}