if instance_exists(fx_lightning)
{
    if fx_lightning.a == 0
        draw = true;
    else
        draw = false;
}
else
    draw = true;
if draw
{
    var cwIsNan = !(global.cw <= 0) && !(global.cw >= 0);
    var chIsNan = !(global.ch <= 0) && !(global.ch >= 0);
    if (cwIsNan || chIsNan) && surface_exists(surf)
        surface_free(surf);
    if !surface_exists(surf) && !cwIsNan && !chIsNan
        surf = surface_create(global.cw, global.ch);
    if surface_exists(surf) && !cwIsNan && !chIsNan
    {
        var cw = global.cw;
        var ch = global.ch;
        var cx = global.cx;
        var cy = global.cy;
        surface_resize(surf, cw, ch);
        surface_set_target(surf);
        draw_set_color(c_black);
        draw_set_alpha(0.8);
        draw_rectangle(0, 0, cw, ch, 0);
        gpu_set_blendmode(bm_subtract);
        with (obj_lightFxParent)
        {
            var sw = sprite_width / 2;
            var sh = sprite_height / 2;
            if scr_et(other.tLightFx, room_speed/4)
                other.size = 1 + random(.1);
            if global.clock < 720
                sunA = global.clock / 720;
            else if global.clock < 1440
                sunA = 1 - ((global.clock - 720) / 720);
            else
                global.clock = 0;
            switch(object_index)
            {
                case obj_torch:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, other.size, other.size, 0, c_white, 1);
                break;

                case obj_light:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, other.size, other.size, 0, c_white, 1);
                break;

                case obj_sun:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, cw, ch, 0, c_white, sunA);
                break;

                case obj_mainMenuLight:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, other.size/4, other.size/4, 0, c_white, 1);
                break;

                case obj_mainMenuLightSmall:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, other.size/8, other.size/8, 0, c_white, 1);
                break;

                case obj_moonLight:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, 1, 1, 0, c_white, 1);
                break;

                case obj_lantern:
                draw_sprite_ext(spr_light, 0, x - cx, y - cy, other.size/2, other.size/2, 0, c_white, 1);
                break;
            }
        }
        gpu_set_blendmode(bm_normal);
        surface_reset_target();
        draw_surface(surf, cx, cy);
        draw_set_alpha(1);
    }
}