/*
* Is (x,y) a good position of mtmp? If mtmp is NULL, then is (x,y) good
* for an object?
*
* This function will only look at mtmp->mdat, so makemon, mplayer, etc can
* call it to generate new monster positions with fake monster structures.
*/
boolean goodpos(struct level *lev, int x, int y, struct monst *mtmp, unsigned gpflags)
{
const struct permonst *mdat = NULL;
boolean ignorewater = ((gpflags & MM_IGNOREWATER) != 0);
if (!isok(x, y)) return FALSE;
/* in many cases, we're trying to create a new monster, which
* can't go on top of the player or any existing monster.
* however, occasionally we are relocating engravings or objects,
* which could be co-located and thus get restricted a bit too much.
* oh well.
*/
if (mtmp != &youmonst && x == u.ux && y == u.uy
&& (!u.usteed || mtmp != u.usteed))
return FALSE;
if (mtmp) {
struct monst *mtmp2 = m_at(lev, x,y);
/* Be careful with long worms. A monster may be placed back in
* its own location. Normally, if m_at() returns the same monster
* that we're trying to place, the monster is being placed in its
* own location. However, that is not correct for worm segments,
* because all the segments of the worm return the same m_at().
* Actually we overdo the check a little bit--a worm can't be placed
* in its own location, period. If we just checked for mtmp->mx
* != x || mtmp->my != y, we'd miss the case where we're called
* to place the worm segment and the worm's head is at x,y.
*/
if (mtmp2 && (mtmp2 != mtmp || mtmp->wormno))
return FALSE;
mdat = mtmp->data;
if (is_pool(lev, x,y) && !ignorewater) {
if (mtmp == &youmonst)
return !!(HLevitation || Flying || Wwalking ||
Swimming || Amphibious);
else return (is_flyer(mdat) || is_swimmer(mdat) ||
is_clinger(mdat));
} else if (mdat->mlet == S_EEL && rn2(13) && !ignorewater) {
return FALSE;
} else if (is_lava(lev, x,y)) {
if (mtmp == &youmonst)
return !!HLevitation;
else
return is_flyer(mdat) || likes_lava(mdat);
}
if (passes_walls(mdat) && may_passwall(lev, x,y)) return TRUE;
}
if (!ACCESSIBLE(lev->locations[x][y].typ)) {
if (!(is_pool(lev, x,y) && ignorewater)) return FALSE;
}
if (closed_door(lev, x, y) && (!mdat || !amorphous(mdat)))
return FALSE;
if (sobj_at(BOULDER, lev, x, y) && (!mdat || !throws_rocks(mdat)))
return FALSE;
return TRUE;
}
/* Can this monster wear a saddle? */
boolean
can_saddle(struct monst *mtmp)
{
const struct permonst *ptr = mtmp->data;
return (strchr(steeds, ptr->mlet) && (ptr->msize >= MZ_MEDIUM) &&
(!humanoid(ptr) || ptr->mlet == S_CENTAUR) && !amorphous(ptr) &&
!noncorporeal(ptr) && !is_whirly(ptr) && !unsolid(ptr));
}
const char *
stagger(const struct permonst *ptr, const char *def)
{
int capitalize = 2 + (*def == highc(*def));
return (is_floater(ptr) ? levitate[capitalize]
: (is_flyer(ptr) &&
ptr->msize <= MZ_SMALL) ? flys[capitalize] :
(is_flyer(ptr) && ptr->msize > MZ_SMALL) ?
flyl[capitalize] : slithy(ptr) ? slither[capitalize] :
amorphous(ptr) ? ooze[capitalize] : !ptr->mmove ?
immobile[capitalize] : nolimbs(ptr) ? crawl[capitalize] : def);
}
/* true iff the type of monster pass through iron bars */
boolean
passes_bars(const struct permonst * mptr)
{
return (boolean) (passes_walls(mptr) || amorphous(mptr) || is_whirly(mptr)
|| verysmall(mptr) || (slithy(mptr) && !bigmonst(mptr)));
}
/* returns 1 if polymorph successful */
int polymon(int mntmp)
{
boolean sticky = sticks(youmonst.data) && u.ustuck && !u.uswallow,
was_blind = !!Blind, dochange = FALSE;
boolean could_pass_walls = Passes_walls;
int mlvl;
if (mvitals[mntmp].mvflags & G_GENOD) { /* allow G_EXTINCT */
pline("You feel rather %s-ish.",mons[mntmp].mname);
exercise(A_WIS, TRUE);
return 0;
}
/* KMH, conduct */
u.uconduct.polyselfs++;
if (!Upolyd) {
/* Human to monster; save human stats */
u.macurr = u.acurr;
u.mamax = u.amax;
u.mfemale = flags.female;
} else {
/* Monster to monster; restore human stats, to be
* immediately changed to provide stats for the new monster
*/
u.acurr = u.macurr;
u.amax = u.mamax;
flags.female = u.mfemale;
}
if (youmonst.m_ap_type) {
/* stop mimicking immediately */
if (multi < 0) unmul("");
} else if (mons[mntmp].mlet != S_MIMIC) {
/* as in polyman() */
youmonst.m_ap_type = M_AP_NOTHING;
}
if (is_male(&mons[mntmp])) {
if (flags.female) dochange = TRUE;
} else if (is_female(&mons[mntmp])) {
if (!flags.female) dochange = TRUE;
} else if (!is_neuter(&mons[mntmp]) && mntmp != u.ulycn) {
if (!rn2(10)) dochange = TRUE;
}
if (dochange) {
flags.female = !flags.female;
pline("You %s %s%s!",
(u.umonnum != mntmp) ? "turn into a" : "feel like a new",
(is_male(&mons[mntmp]) || is_female(&mons[mntmp])) ? "" :
flags.female ? "female " : "male ",
mons[mntmp].mname);
} else {
if (u.umonnum != mntmp)
pline("You turn into %s!", an(mons[mntmp].mname));
else
pline("You feel like a new %s!", mons[mntmp].mname);
}
if (Stoned && poly_when_stoned(&mons[mntmp])) {
/* poly_when_stoned already checked stone golem genocide */
pline("You turn to stone!");
mntmp = PM_STONE_GOLEM;
Stoned = 0;
delayed_killer = 0;
}
u.mtimedone = rn1(500, 500);
u.umonnum = mntmp;
set_uasmon();
/* New stats for monster, to last only as long as polymorphed.
* Currently only strength gets changed.
*/
if (strongmonst(&mons[mntmp])) ABASE(A_STR) = AMAX(A_STR) = STR18(100);
if (Stone_resistance && Stoned) { /* [email protected] */
Stoned = 0;
delayed_killer = 0;
pline("You no longer seem to be petrifying.");
}
if (Sick_resistance && Sick) {
make_sick(0L, NULL, FALSE, SICK_ALL);
pline("You no longer feel sick.");
}
if (Slimed) {
if (flaming(youmonst.data)) {
pline("The slime burns away!");
Slimed = 0L;
iflags.botl = 1;
} else if (mntmp == PM_GREEN_SLIME) {
/* do it silently */
Slimed = 0L;
iflags.botl = 1;
}
}
if (nohands(youmonst.data)) Glib = 0;
/*
mlvl = adj_lev(&mons[mntmp]);
* We can't do the above, since there's no such thing as an
* "experience level of you as a monster" for a polymorphed character.
*/
mlvl = (int)mons[mntmp].mlevel;
if (youmonst.data->mlet == S_DRAGON && mntmp >= PM_GRAY_DRAGON) {
u.mhmax = In_endgame(&u.uz) ? (8*mlvl) : (4*mlvl + dice(mlvl,4));
} else if (is_golem(youmonst.data)) {
u.mhmax = golemhp(mntmp);
} else {
if (!mlvl) u.mhmax = rnd(4);
else u.mhmax = dice(mlvl, 8);
if (is_home_elemental(&u.uz, &mons[mntmp])) u.mhmax *= 3;
}
u.mh = u.mhmax;
if (u.ulevel < mlvl) {
/* Low level characters can't become high level monsters for long */
u.mtimedone = u.mtimedone * u.ulevel / mlvl;
}
if (uskin && mntmp != armor_to_dragon(uskin->otyp))
skinback(FALSE);
break_armor();
drop_weapon(1);
if (hides_under(youmonst.data))
u.uundetected = OBJ_AT(u.ux, u.uy);
else if (youmonst.data->mlet == S_EEL)
u.uundetected = is_pool(level, u.ux, u.uy);
else
u.uundetected = 0;
if (u.utraptype == TT_PIT) {
if (could_pass_walls && !Passes_walls) {
u.utrap = rn1(6,2);
} else if (!could_pass_walls && Passes_walls) {
u.utrap = 0;
}
}
if (was_blind && !Blind) { /* previous form was eyeless */
Blinded = 1L;
make_blinded(0L, TRUE); /* remove blindness */
}
newsym(u.ux,u.uy); /* Change symbol */
if (!sticky && !u.uswallow && u.ustuck && sticks(youmonst.data)) u.ustuck = 0;
else if (sticky && !sticks(youmonst.data)) uunstick();
if (u.usteed) {
if (touch_petrifies(u.usteed->data) &&
!Stone_resistance && rnl(3)) {
char buf[BUFSZ];
pline("No longer petrifying-resistant, you touch %s.",
mon_nam(u.usteed));
sprintf(buf, "riding %s", an(u.usteed->data->mname));
instapetrify(buf);
}
if (!can_ride(u.usteed)) dismount_steed(DISMOUNT_POLY);
}
if (flags.verbose) {
static const char use_thec[] = "Use the command #%s to %s.";
static const char monsterc[] = "monster";
if (can_breathe(youmonst.data))
pline(use_thec,monsterc,"use your breath weapon");
if (attacktype(youmonst.data, AT_SPIT))
pline(use_thec,monsterc,"spit venom");
if (youmonst.data->mlet == S_NYMPH)
pline(use_thec,monsterc,"remove an iron ball");
if (attacktype(youmonst.data, AT_GAZE))
pline(use_thec,monsterc,"gaze at monsters");
if (is_hider(youmonst.data))
pline(use_thec,monsterc,"hide");
if (is_were(youmonst.data))
pline(use_thec,monsterc,"summon help");
if (webmaker(youmonst.data))
pline(use_thec,monsterc,"spin a web");
if (u.umonnum == PM_GREMLIN)
pline(use_thec,monsterc,"multiply in a fountain");
if (is_unicorn(youmonst.data))
pline(use_thec,monsterc,"use your horn");
if (is_mind_flayer(youmonst.data))
pline(use_thec,monsterc,"emit a mental blast");
if (youmonst.data->msound == MS_SHRIEK) /* worthless, actually */
pline(use_thec,monsterc,"shriek");
if (lays_eggs(youmonst.data) && flags.female)
pline(use_thec,"sit","lay an egg");
}
/* you now know what an egg of your type looks like */
if (lays_eggs(youmonst.data)) {
learn_egg_type(u.umonnum);
/* make queen bees recognize killer bee eggs */
learn_egg_type(egg_type_from_parent(u.umonnum, TRUE));
}
find_ac();
if ((!Levitation && !u.ustuck && !Flying &&
(is_pool(level, u.ux,u.uy) || is_lava(level, u.ux,u.uy))) ||
(Underwater && !Swimming))
spoteffects(TRUE);
if (Passes_walls && u.utrap && u.utraptype == TT_INFLOOR) {
u.utrap = 0;
pline("The rock seems to no longer trap you.");
} else if (likes_lava(youmonst.data) && u.utrap && u.utraptype == TT_LAVA) {
u.utrap = 0;
pline("The lava now feels soothing.");
}
if (amorphous(youmonst.data) || is_whirly(youmonst.data) || unsolid(youmonst.data)) {
if (Punished) {
pline("You slip out of the iron chain.");
unpunish();
}
}
if (u.utrap && (u.utraptype == TT_WEB || u.utraptype == TT_BEARTRAP) &&
(amorphous(youmonst.data) || is_whirly(youmonst.data) || unsolid(youmonst.data) ||
(youmonst.data->msize <= MZ_SMALL && u.utraptype == TT_BEARTRAP))) {
pline("You are no longer stuck in the %s.",
u.utraptype == TT_WEB ? "web" : "bear trap");
/* probably should burn webs too if PM_FIRE_ELEMENTAL */
u.utrap = 0;
}
if (webmaker(youmonst.data) && u.utrap && u.utraptype == TT_WEB) {
pline("You orient yourself on the web.");
u.utrap = 0;
}
iflags.botl = 1;
vision_full_recalc = 1;
see_monsters();
exercise(A_CON, FALSE);
exercise(A_WIS, TRUE);
encumber_msg();
return 1;
}
/* the tsurugi of muramasa or vorpal blade hit someone */
static boolean artifact_hit_behead(struct monst *magr, struct monst *mdef,
struct obj *otmp, int *dmgptr, int dieroll)
{
boolean youattack = (magr == &youmonst);
boolean youdefend = (mdef == &youmonst);
boolean vis = (!youattack && magr && cansee(magr->mx, magr->my))
|| (!youdefend && cansee(mdef->mx, mdef->my))
|| (youattack && u.uswallow && mdef == u.ustuck && !Blind);
const char *wepdesc;
char hittee[BUFSZ];
strcpy(hittee, youdefend ? "you" : mon_nam(mdef));
/* We really want "on a natural 20" but Nethack does it in reverse from AD&D. */
if (otmp->oartifact == ART_TSURUGI_OF_MURAMASA && dieroll == 1) {
wepdesc = "The razor-sharp blade";
/* not really beheading, but so close, why add another SPFX */
if (youattack && u.uswallow && mdef == u.ustuck) {
pline("You slice %s wide open!", mon_nam(mdef));
*dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER;
return TRUE;
}
if (!youdefend) {
/* allow normal cutworm() call to add extra damage */
if (notonhead)
return FALSE;
if (bigmonst(mdef->data)) {
if (youattack)
pline("You slice deeply into %s!",
mon_nam(mdef));
else if (vis)
pline("%s cuts deeply into %s!",
Monnam(magr), hittee);
*dmgptr *= 2;
return TRUE;
}
*dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER;
pline("%s cuts %s in half!", wepdesc, mon_nam(mdef));
otmp->dknown = TRUE;
return TRUE;
} else {
if (bigmonst(youmonst.data)) {
pline("%s cuts deeply into you!",
magr ? Monnam(magr) : wepdesc);
*dmgptr *= 2;
return TRUE;
}
/* Players with negative AC's take less damage instead
* of just not getting hit. We must add a large enough
* value to the damage so that this reduction in
* damage does not prevent death.
*/
*dmgptr = 2 * (Upolyd ? u.mh : u.uhp) + FATAL_DAMAGE_MODIFIER;
pline("%s cuts you in half!", wepdesc);
otmp->dknown = TRUE;
return TRUE;
}
} else if (otmp->oartifact == ART_VORPAL_BLADE &&
(dieroll == 1 || mdef->data == &mons[PM_JABBERWOCK])) {
static const char * const behead_msg[2] = {
"%s beheads %s!",
"%s decapitates %s!"
};
if (youattack && u.uswallow && mdef == u.ustuck)
return FALSE;
wepdesc = artilist[ART_VORPAL_BLADE].name;
if (!youdefend) {
if (!has_head(mdef->data) || notonhead || u.uswallow) {
if (youattack)
pline("Somehow, you miss %s wildly.",
mon_nam(mdef));
else if (vis)
pline("Somehow, %s misses wildly.",
mon_nam(magr));
*dmgptr = 0;
return (boolean)(youattack || vis);
}
if (noncorporeal(mdef->data) || amorphous(mdef->data)) {
pline("%s slices through %s %s.", wepdesc,
s_suffix(mon_nam(mdef)),
mbodypart(mdef,NECK));
return TRUE;
}
*dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER;
pline(behead_msg[rn2(SIZE(behead_msg))],
wepdesc, mon_nam(mdef));
otmp->dknown = TRUE;
return TRUE;
} else {
if (!has_head(youmonst.data)) {
pline("Somehow, %s misses you wildly.",
magr ? mon_nam(magr) : wepdesc);
*dmgptr = 0;
return TRUE;
}
if (noncorporeal(youmonst.data) || amorphous(youmonst.data)) {
pline("%s slices through your %s.",
wepdesc, body_part(NECK));
return TRUE;
}
*dmgptr = 2 * (Upolyd ? u.mh : u.uhp)
+ FATAL_DAMAGE_MODIFIER;
pline(behead_msg[rn2(SIZE(behead_msg))],
wepdesc, "you");
otmp->dknown = TRUE;
/* Should amulets fall off? */
return TRUE;
}
}
return FALSE;
}