Function dozap

src/zap.c:2626–2683

#zap command, 'z' (or 'y' if numbed_pad==-1) */

/* #zap command, 'z' (or 'y' if numbed_pad==-1) */
int
dozap(void)
{
    struct obj *obj;
    int damage, need_dir;

    if (nohands(gy.youmonst.data)) {
        You("aren't able to zap anything in your current form.");
        return ECMD_OK;
    }
    if (check_capacity((char *) 0))
        return ECMD_OK;
    obj = getobj("zap", zap_ok, GETOBJ_NOFLAGS);
    if (!obj)
        return ECMD_CANCEL;

    check_unpaid(obj);

    need_dir = objects[obj->otyp].oc_dir != NODIR;
    if (!zappable(obj)) {
        pline1(nothing_happens);
    } else if (obj->cursed && !rn2(WAND_BACKFIRE_CHANCE)) {
        backfire(obj); /* the wand blows up in your face! */
        exercise(A_STR, FALSE);
        /* 'obj' is gone; skip update_inventory() because
           backfire() -> useupall() -> freeinv() did it */
        return ECMD_TIME;
    } else if (need_dir && !getdir((char *) 0)) {
        if (!Blind)
            pline("%s glows and fades.", The(xname(obj)));
        /* make him pay for knowing !NODIR */
    } else if (need_dir && !u.dx && !u.dy && !u.dz) {
        if ((damage = zapyourself(obj, TRUE)) != 0) {
            char buf[BUFSZ];

            Sprintf(buf, "zapped %sself with %s",
                    uhim(), killer_xname(obj));
            losehp(Maybe_Half_Phys(damage), buf, NO_KILLER_PREFIX);
        }
    } else {
        /*      Are we having fun yet?
         * weffects -> buzz(obj->otyp) -> zhitm (temple priest) ->
         * attack -> hitum -> known_hitum -> ghod_hitsu ->
         * buzz(AD_ELEC) -> destroy_items(AD_ELEC) ->
         * useup -> obfree -> dealloc_obj -> free(obj)
         */
        gc.current_wand = obj;
        weffects(obj);
        obj = gc.current_wand;
        gc.current_wand = 0;
    }
    if (obj && obj->spe < 0) {
        pline("%s to dust.", Tobjnam(obj, "turn"));
        useupall(obj); /* calls freeinv() -> update_inventory() */
    } else
        update_inventory(); /* maybe used a charge */
    return ECMD_TIME;
}