draw_set_color(c_black);
ossafe_fill_rectangle(0, 0, 159, room_height);
ossafe_fill_rectangle(159, 0, room_width, 79);
ossafe_fill_rectangle(480, 80, room_width, room_height);
ossafe_fill_rectangle(159, 360, 279, room_height);
ossafe_fill_rectangle(361, 360, room_width, room_height);
draw_set_color(c_white);