if (_bullet_marker == -4)
    exit;
if (!_bullet_active)
    exit;
if (_fade_out)
{
    var is_complete = false;
    var target_x = _target_pos.x;
    var target_y = _target_pos.y;
    with (_bullet_marker)
    {
        image_alpha = scr_movetowards(image_alpha, 0, 0.1);
        scr_obj_movetowards_point(target_x, target_y, 8);
        if (image_alpha <= 0)
            is_complete = true;
    }
    if (is_complete)
        stop();
}
else
{
    var bullet_distance = point_distance(_bullet_marker.x, _bullet_marker.y, _target_pos.x, _target_pos.y);
    var target_x = _target_pos.x;
    var target_y = _target_pos.y;
    if (bullet_distance <= 20)
    {
        with (_bullet_marker)
        {
            image_alpha = scr_movetowards(image_alpha, 0, 0.4);
            scr_obj_movetowards_point(target_x, target_y, 8);
        }
        if (_bullet_marker.image_alpha <= 0)
            _bullet_active = false;
    }
    else
    {
        with (_bullet_marker)
        {
            image_alpha = scr_movetowards(image_alpha, 1, 0.2);
            scr_obj_movetowards_point(target_x, target_y, 8);
        }
    }
}