if (visible == true)
{
    with (other.id)
        instance_destroy();
}
if (visible == true)
{
    if (instance_exists(obj_ratingsmaster))
        global.ratings += 20;
    snd_play(snd_mtt_burst);
    bp = instance_create(x, y, obj_brokenpiece);
    if (instance_exists(bp))
        bp.sprite_index = sprite_index;
    visible = false;
}