Function passivemm

src/mhitm.c:1303–1457

* Passive responses by defenders. Does not replicate responses already * handled above. Returns same values as mattackm. */

 * handled above.  Returns same values as mattackm.
 */
staticfn int
passivemm(
    struct monst *magr,
    struct monst *mdef,
    boolean mhitb,
    int mdead,
    struct obj *mwep)
{
    struct permonst *mddat = mdef->data;
    struct permonst *madat = magr->data;
    char buf[BUFSZ];
    int i, tmp;
    int mhit = mhitb ? M_ATTK_HIT : M_ATTK_MISS;

    for (i = 0;; i++) {
        if (i >= NATTK)
            return (mdead | mhit); /* no passive attacks */
        if (mddat->mattk[i].aatyp == AT_NONE)
            break;
    }
    if (mddat->mattk[i].damn)
        tmp = d((int) mddat->mattk[i].damn, (int) mddat->mattk[i].damd);
    else if (mddat->mattk[i].damd)
        tmp = d((int) mddat->mlevel + 1, (int) mddat->mattk[i].damd);
    else
        tmp = 0;

    /* These affect the enemy even if defender killed */
    switch (mddat->mattk[i].adtyp) {
    case AD_ACID:
        if (mhitb && !rn2(2)) {
            Strcpy(buf, Monnam(magr));
            if (canseemon(magr))
                pline("%s is splashed by %s %s!", buf,
                      s_suffix(mon_nam(mdef)), hliquid("acid"));
            if (resists_acid(magr)) {
                if (canseemon(magr))
                    pline("%s is not affected.", Monnam(magr));
                tmp = 0;
            }
        } else
            tmp = 0;
        if (!rn2(30))
            erode_armor(magr, ERODE_CORRODE);
        if (!rn2(6))
            acid_damage(MON_WEP(magr));
        goto assess_dmg;
    case AD_ENCH: /* KMH -- remove enchantment (disenchanter) */
        if (mhitb && !mdef->mcan && mwep) {
            (void) drain_item(mwep, FALSE);
            /* No message */
        }
        break;
    default:
        break;
    }
    if (mdead || mdef->mcan)
        return (mdead | mhit);