if (dr < 0.5)
    dr += 0.1;
if (global.turntimer < 6)
    dr -= 0.2;
draw_set_alpha(dr);
draw_set_color(c_black);
ossafe_fill_rectangle(-10, -10, 999, 999);
draw_set_alpha(1);
if (global.turntimer <= 0)
    instance_destroy();