draw_set_color(c_black);
ossafe_fill_rectangle(0, 0, 79, room_height);
ossafe_fill_rectangle(0, 0, room_width, 79);
ossafe_fill_rectangle(560, 0, room_width, room_height);
ossafe_fill_rectangle(0, 400, 279, room_height);
ossafe_fill_rectangle(360, 400, room_width, room_height);
draw_set_color(c_white);