_timer++;
if (_mode == 0)
{
    _timer_interval = floor(_timer_interval);
    if ((_timer % _timer_interval) == 1)
    {
        var after_image = instance_create(x, y, obj_marker_centerpoint);
        after_image.sprite_index = sprite_index;
        after_image.image_xscale = 8;
        after_image.image_yscale = 8;
        after_image.depth = depth + 1;
        after_image.fog = true;
        _rainbow_index = scr_wrap(_rainbow_index + 1, 0, array_length(_rainbow_list) - 1);
        after_image.image_blend = _rainbow_list[_rainbow_index];
        after_image.image_alpha = 0;
        var fade_speed = 8;
        with (after_image)
        {
            scr_lerpvar("image_alpha", image_alpha, 1, fade_speed);
            scr_lerpvar("image_xscale", image_xscale, 2, fade_speed);
            scr_lerpvar("image_yscale", image_yscale, 2, fade_speed);
        }
        scr_doom(after_image, fade_speed + 1);
        scr_oflash();
    }
}