static public void DrawCover(FoxDraw a, double x, double y)
        {
            string path = @".\assets\floor.png";

            a.AddImage(path, x, y);
        }
        static public void DrawHero(FoxDraw a, double x, double y)
        {
            string path = @".\assets\hero-down.png";

            a.AddImage(path, x, y);
        }