- context.draw_surface(background, Vector(SCREEN_WIDTH/2 - background->get_width()/2 , SCREEN_HEIGHT/2 - background->get_height()/2), 0);
+ context.draw_surface_part(background, Rectf(0, 0, background->get_width(), background->get_height()),
+ Rectf(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT), 0);
+