void draw()
{
Pen myWind = new Pen(Color.Yellow, 2);
fg.Clear(Color.Black);
while (drawning)
{
g.Clear(Color.Black);
obj.tick(new Point(xy.X, xy.Y), 1);
obj.render(g);
xy.X++;
xy.Y++;
fg.DrawImage(btm, new Point(0, 0));
}
}