Function slippery_ice_fumbling

src/hack.c:2395–2415

}

staticfn void
slippery_ice_fumbling(void)
{
    boolean on_ice = !Levitation && is_ice(u.ux, u.uy);
    struct monst *iceskater = u.usteed ? u.usteed : &gy.youmonst;

    if (on_ice) {
        if ((uarmf && objdescr_is(uarmf, "snow boots"))
            || resists_cold(iceskater) || Flying
            || is_floater(iceskater->data) || is_clinger(iceskater->data)
            || is_whirly(iceskater->data)) {
            on_ice = FALSE;
        } else if (!rn2(Cold_resistance ? 3 : 2)) {
            HFumbling |= FROMOUTSIDE;
            HFumbling &= ~TIMEOUT;
            HFumbling += 1; /* slip on next move */
        }
    }
    if (!on_ice && (HFumbling & FROMOUTSIDE))
        HFumbling &= ~FROMOUTSIDE;
}

boolean
u_maybe_impaired(void)