Function sleep_monst

src/mhitm.c:1222–1246

`mon' is hit by a sleep attack; return 1 if it's affected, 0 otherwise */

/* `mon' is hit by a sleep attack; return 1 if it's affected, 0 otherwise */
int
sleep_monst(struct monst *mon, int amt, int how)
{
    /* reveal mimic unless already asleep or paralyzed (won't be 'busy') */
    if (how >= 0 && !mon->msleeping && !mon->mfrozen
        && mon->data->mlet == S_MIMIC && (M_AP_TYPE(mon) == M_AP_FURNITURE
                                          || M_AP_TYPE(mon) == M_AP_OBJECT))
        seemimic(mon);

    if (resists_sleep(mon) || defended(mon, AD_SLEE)
        || (how >= 0 && resist(mon, (char) how, 0, NOTELL))) {
        shieldeff(mon->mx, mon->my);
    } else if (mon->mcanmove) {
        finish_meating(mon); /* terminate any meal-in-progress */
        amt += (int) mon->mfrozen;
        if (amt > 0) { /* sleep for N turns */
            mon->mcanmove = 0;
            mon->mfrozen = min(amt, 127);
        } else { /* sleep until awakened */
            mon->msleeping = 1;
        }
        return 1;
    }
    return 0;
}

/* sleeping grabber releases, engulfer doesn't; don't use for paralysis! */
void