Function has_magic_key

src/artifact.c:2789–2803

figure out whether 'mon' (usually youmonst) is carrying the magic key */

/* figure out whether 'mon' (usually youmonst) is carrying the magic key */
struct obj *
has_magic_key(struct monst *mon) /* if null, hero assumed */
{
    struct obj *o;
    short key = artilist[ART_MASTER_KEY_OF_THIEVERY].otyp;

    if (!mon)
        mon = &gy.youmonst;
    for (o = ((mon == &gy.youmonst) ? gi.invent : mon->minvent); o;
         o = nxtobj(o, key, FALSE)) {
        if (is_magic_key(mon, o))
            return o;
    }
    return (struct obj *) 0;
}

/* #define is_art(o,art) ((o) && (o)->oartifact == (art)) */