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trap.c
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trap.c
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/* NetHack 3.6 trap.c $NHDT-Date: 1576638501 2019/12/18 03:08:21 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.329 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Robert Patrick Rankin, 2013. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
extern const char *const destroy_strings[][3]; /* from zap.c */
STATIC_DCL boolean FDECL(keep_saddle_with_steedcorpse, (unsigned, struct obj *,
struct obj *));
STATIC_DCL struct obj *FDECL(t_missile, (int, struct trap *));
STATIC_DCL char *FDECL(trapnote, (struct trap *, BOOLEAN_P));
STATIC_DCL int FDECL(steedintrap, (struct trap *, struct obj *));
STATIC_DCL void FDECL(launch_drop_spot, (struct obj *, XCHAR_P, XCHAR_P));
STATIC_DCL int FDECL(mkroll_launch, (struct trap *, XCHAR_P, XCHAR_P,
SHORT_P, long));
STATIC_DCL boolean FDECL(isclearpath, (coord *, int, SCHAR_P, SCHAR_P));
STATIC_DCL void FDECL(dofiretrap, (struct obj *));
STATIC_DCL void NDECL(domagictrap);
STATIC_DCL boolean FDECL(emergency_disrobe, (boolean *));
STATIC_DCL int FDECL(untrap_prob, (struct trap *));
STATIC_DCL void FDECL(move_into_trap, (struct trap *));
STATIC_DCL int FDECL(try_disarm, (struct trap *, BOOLEAN_P));
STATIC_DCL void FDECL(reward_untrap, (struct trap *, struct monst *));
STATIC_DCL int FDECL(disarm_holdingtrap, (struct trap *));
STATIC_DCL int FDECL(disarm_landmine, (struct trap *));
STATIC_DCL int FDECL(disarm_squeaky_board, (struct trap *));
STATIC_DCL int FDECL(disarm_shooting_trap, (struct trap *, int));
STATIC_DCL void FDECL(clear_conjoined_pits, (struct trap *));
STATIC_DCL boolean FDECL(adj_nonconjoined_pit, (struct trap *));
STATIC_DCL int FDECL(try_lift, (struct monst *, struct trap *, int,
BOOLEAN_P));
STATIC_DCL int FDECL(help_monster_out, (struct monst *, struct trap *));
#if 0
STATIC_DCL void FDECL(join_adjacent_pits, (struct trap *));
#endif
STATIC_DCL boolean FDECL(thitm, (int, struct monst *, struct obj *, int,
BOOLEAN_P));
STATIC_DCL void NDECL(maybe_finish_sokoban);
/* mintrap() should take a flags argument, but for time being we use this */
STATIC_VAR int force_mintrap = 0;
STATIC_VAR const char *const a_your[2] = { "a", "your" };
STATIC_VAR const char *const A_Your[2] = { "A", "Your" };
STATIC_VAR const char tower_of_flame[] = "tower of flame";
STATIC_VAR const char *const A_gush_of_water_hits = "A gush of water hits";
STATIC_VAR const char *const blindgas[6] = { "humid", "odorless",
"pungent", "chilling",
"acrid", "biting" };
/* called when you're hit by fire (dofiretrap,buzz,zapyourself,explode);
returns TRUE if hit on torso */
boolean
burnarmor(victim)
struct monst *victim;
{
struct obj *item;
char buf[BUFSZ];
int mat_idx, oldspe;
boolean hitting_u;
if (!victim)
return 0;
hitting_u = (victim == &youmonst);
/* burning damage may dry wet towel */
item = hitting_u ? carrying(TOWEL) : m_carrying(victim, TOWEL);
while (item) {
if (is_wet_towel(item)) {
oldspe = item->spe;
dry_a_towel(item, rn2(oldspe + 1), TRUE);
if (item->spe != oldspe)
break; /* stop once one towel has been affected */
}
item = item->nobj;
}
#define burn_dmg(obj, descr) erode_obj(obj, descr, ERODE_BURN, EF_GREASE)
while (1) {
switch (rn2(5)) {
case 0:
item = hitting_u ? uarmh : which_armor(victim, W_ARMH);
if (item) {
mat_idx = objects[item->otyp].oc_material;
Sprintf(buf, "%s %s", materialnm[mat_idx],
helm_simple_name(item));
}
if (!burn_dmg(item, item ? buf : "helmet"))
continue;
break;
case 1:
item = hitting_u ? uarmc : which_armor(victim, W_ARMC);
if (item) {
(void) burn_dmg(item, cloak_simple_name(item));
return TRUE;
}
item = hitting_u ? uarm : which_armor(victim, W_ARM);
if (item) {
(void) burn_dmg(item, xname(item));
return TRUE;
}
item = hitting_u ? uarmu : which_armor(victim, W_ARMU);
if (item)
(void) burn_dmg(item, "shirt");
return TRUE;
case 2:
item = hitting_u ? uarms : which_armor(victim, W_ARMS);
if (!burn_dmg(item, "wooden shield"))
continue;
break;
case 3:
item = hitting_u ? uarmg : which_armor(victim, W_ARMG);
if (!burn_dmg(item, "gloves"))
continue;
break;
case 4:
item = hitting_u ? uarmf : which_armor(victim, W_ARMF);
if (!burn_dmg(item, "boots"))
continue;
break;
}
break; /* Out of while loop */
}
#undef burn_dmg
return FALSE;
}
/* Generic erode-item function.
* "ostr", if non-null, is an alternate string to print instead of the
* object's name.
* "type" is an ERODE_* value for the erosion type
* "flags" is an or-ed list of EF_* flags
*
* Returns an erosion return value (ER_*)
*/
int
erode_obj(otmp, ostr, type, ef_flags)
register struct obj *otmp;
const char *ostr;
int type;
int ef_flags;
{
static NEARDATA const char
*const action[] = { "smoulder", "rust", "rot", "corrode" },
*const msg[] = { "burnt", "rusted", "rotten", "corroded" },
*const bythe[] = { "heat", "oxidation", "decay", "corrosion" };
boolean vulnerable = FALSE, is_primary = TRUE,
check_grease = (ef_flags & EF_GREASE) ? TRUE : FALSE,
print = (ef_flags & EF_VERBOSE) ? TRUE : FALSE,
uvictim, vismon, visobj;
int erosion, cost_type;
struct monst *victim;
if (!otmp)
return ER_NOTHING;
victim = carried(otmp) ? &youmonst : mcarried(otmp) ? otmp->ocarry : NULL;
uvictim = (victim == &youmonst);
vismon = victim && (victim != &youmonst) && canseemon(victim);
/* Is bhitpos correct here? Ugh. */
visobj = !victim && cansee(bhitpos.x, bhitpos.y);
switch (type) {
case ERODE_BURN:
vulnerable = is_flammable(otmp);
check_grease = FALSE;
cost_type = COST_BURN;
break;
case ERODE_RUST:
vulnerable = is_rustprone(otmp);
cost_type = COST_RUST;
break;
case ERODE_ROT:
vulnerable = is_rottable(otmp);
check_grease = FALSE;
is_primary = FALSE;
cost_type = COST_ROT;
break;
case ERODE_CORRODE:
vulnerable = is_corrodeable(otmp);
is_primary = FALSE;
cost_type = COST_CORRODE;
break;
default:
impossible("Invalid erosion type in erode_obj");
return ER_NOTHING;
}
erosion = is_primary ? otmp->oeroded : otmp->oeroded2;
if (!ostr)
ostr = cxname(otmp);
/* 'visobj' messages insert "the"; probably ought to switch to the() */
if (visobj && !(uvictim || vismon) && !strncmpi(ostr, "the ", 4))
ostr += 4;
if (check_grease && otmp->greased) {
grease_protect(otmp, ostr, victim);
return ER_GREASED;
} else if (!erosion_matters(otmp)) {
return ER_NOTHING;
} else if (!vulnerable || (otmp->oerodeproof && otmp->rknown)) {
if (flags.verbose && print && (uvictim || vismon))
pline("%s %s %s not affected by %s.",
uvictim ? "Your" : s_suffix(Monnam(victim)),
ostr, vtense(ostr, "are"), bythe[type]);
return ER_NOTHING;
} else if (otmp->oerodeproof || (otmp->blessed && !rnl(4))) {
if (flags.verbose && (print || otmp->oerodeproof)
&& (uvictim || vismon || visobj))
pline("Somehow, %s %s %s not affected by the %s.",
uvictim ? "your"
: !vismon ? "the" /* visobj */
: s_suffix(mon_nam(victim)),
ostr, vtense(ostr, "are"), bythe[type]);
/* We assume here that if the object is protected because it
* is blessed, it still shows some minor signs of wear, and
* the hero can distinguish this from an object that is
* actually proof against damage.
*/
if (otmp->oerodeproof) {
otmp->rknown = TRUE;
if (victim == &youmonst)
update_inventory();
}
return ER_NOTHING;
} else if (erosion < MAX_ERODE) {
const char *adverb = (erosion + 1 == MAX_ERODE)
? " completely"
: erosion ? " further" : "";
if (uvictim || vismon || visobj)
pline("%s %s %s%s!",
uvictim ? "Your"
: !vismon ? "The" /* visobj */
: s_suffix(Monnam(victim)),
ostr, vtense(ostr, action[type]), adverb);
if (ef_flags & EF_PAY)
costly_alteration(otmp, cost_type);
if (is_primary)
otmp->oeroded++;
else
otmp->oeroded2++;
if (victim == &youmonst)
update_inventory();
return ER_DAMAGED;
} else if (ef_flags & EF_DESTROY) {
if (uvictim || vismon || visobj)
pline("%s %s %s away!",
uvictim ? "Your"
: !vismon ? "The" /* visobj */
: s_suffix(Monnam(victim)),
ostr, vtense(ostr, action[type]));
if (ef_flags & EF_PAY)
costly_alteration(otmp, cost_type);
setnotworn(otmp);
delobj(otmp);
return ER_DESTROYED;
} else {
if (flags.verbose && print) {
if (uvictim)
Your("%s %s completely %s.",
ostr, vtense(ostr, Blind ? "feel" : "look"), msg[type]);
else if (vismon || visobj)
pline("%s %s %s completely %s.",
!vismon ? "The" : s_suffix(Monnam(victim)),
ostr, vtense(ostr, "look"), msg[type]);
}
return ER_NOTHING;
}
}
/* Protect an item from erosion with grease. Returns TRUE if the grease
* wears off.
*/
boolean
grease_protect(otmp, ostr, victim)
register struct obj *otmp;
const char *ostr;
struct monst *victim;
{
static const char txt[] = "protected by the layer of grease!";
boolean vismon = victim && (victim != &youmonst) && canseemon(victim);
if (ostr) {
if (victim == &youmonst)
Your("%s %s %s", ostr, vtense(ostr, "are"), txt);
else if (vismon)
pline("%s's %s %s %s", Monnam(victim),
ostr, vtense(ostr, "are"), txt);
} else if (victim == &youmonst || vismon) {
pline("%s %s", Yobjnam2(otmp, "are"), txt);
}
if (!rn2(2)) {
otmp->greased = 0;
if (carried(otmp)) {
pline_The("grease dissolves.");
update_inventory();
}
return TRUE;
}
return FALSE;
}
struct trap *
maketrap(x, y, typ)
int x, y, typ;
{
static union vlaunchinfo zero_vl;
boolean oldplace;
struct trap *ttmp;
struct rm *lev = &levl[x][y];
if ((ttmp = t_at(x, y)) != 0) {
if (ttmp->ttyp == MAGIC_PORTAL || ttmp->ttyp == VIBRATING_SQUARE)
return (struct trap *) 0;
oldplace = TRUE;
if (u.utrap && x == u.ux && y == u.uy
&& ((u.utraptype == TT_BEARTRAP && typ != BEAR_TRAP)
|| (u.utraptype == TT_WEB && typ != WEB)
|| (u.utraptype == TT_PIT && !is_pit(typ))))
u.utrap = 0;
/* old <tx,ty> remain valid */
} else if (IS_FURNITURE(lev->typ)
&& (!IS_GRAVE(lev->typ) || (typ != PIT && typ != HOLE))) {
/* no trap on top of furniture (caller usually screens the
location to inhibit this, but wizard mode wishing doesn't) */
return (struct trap *) 0;
} else {
oldplace = FALSE;
ttmp = newtrap();
(void) memset((genericptr_t)ttmp, 0, sizeof(struct trap));
ttmp->ntrap = 0;
ttmp->tx = x;
ttmp->ty = y;
}
/* [re-]initialize all fields except ntrap (handled below) and <tx,ty> */
ttmp->vl = zero_vl;
ttmp->launch.x = ttmp->launch.y = -1; /* force error if used before set */
ttmp->dst.dnum = ttmp->dst.dlevel = -1;
ttmp->madeby_u = 0;
ttmp->once = 0;
ttmp->tseen = (typ == HOLE); /* hide non-holes */
ttmp->ttyp = typ;
switch (typ) {
case SQKY_BOARD: {
int tavail[12], tpick[12], tcnt = 0, k;
struct trap *t;
for (k = 0; k < 12; ++k)
tavail[k] = tpick[k] = 0;
for (t = ftrap; t; t = t->ntrap)
if (t->ttyp == SQKY_BOARD && t != ttmp)
tavail[t->tnote] = 1;
/* now populate tpick[] with the available indices */
for (k = 0; k < 12; ++k)
if (tavail[k] == 0)
tpick[tcnt++] = k;
/* choose an unused note; if all are in use, pick a random one */
ttmp->tnote = (short) ((tcnt > 0) ? tpick[rn2(tcnt)] : rn2(12));
break;
}
case STATUE_TRAP: { /* create a "living" statue */
struct monst *mtmp;
struct obj *otmp, *statue;
struct permonst *mptr;
int trycount = 10;
do { /* avoid ultimately hostile co-aligned unicorn */
mptr = &mons[rndmonnum()];
} while (--trycount > 0 && is_unicorn(mptr)
&& sgn(u.ualign.type) == sgn(mptr->maligntyp));
statue = mkcorpstat(STATUE, (struct monst *) 0, mptr, x, y,
CORPSTAT_NONE);
mtmp = makemon(&mons[statue->corpsenm], 0, 0, MM_NOCOUNTBIRTH);
if (!mtmp)
break; /* should never happen */
while (mtmp->minvent) {
otmp = mtmp->minvent;
otmp->owornmask = 0;
obj_extract_self(otmp);
(void) add_to_container(statue, otmp);
}
statue->owt = weight(statue);
mongone(mtmp);
break;
}
case ROLLING_BOULDER_TRAP: /* boulder will roll towards trigger */
(void) mkroll_launch(ttmp, x, y, BOULDER, 1L);
break;
case PIT:
case SPIKED_PIT:
ttmp->conjoined = 0;
/*FALLTHRU*/
case HOLE:
case TRAPDOOR:
if (*in_rooms(x, y, SHOPBASE)
&& (is_hole(typ) || IS_DOOR(lev->typ) || IS_WALL(lev->typ)))
add_damage(x, y, /* schedule repair */
((IS_DOOR(lev->typ) || IS_WALL(lev->typ))
&& !context.mon_moving)
? SHOP_HOLE_COST
: 0L);
lev->doormask = 0; /* subsumes altarmask, icedpool... */
if (IS_ROOM(lev->typ)) /* && !IS_AIR(lev->typ) */
lev->typ = ROOM;
/*
* some cases which can happen when digging
* down while phazing thru solid areas
*/
else if (lev->typ == STONE || lev->typ == SCORR)
lev->typ = CORR;
else if (IS_WALL(lev->typ) || lev->typ == SDOOR)
lev->typ = level.flags.is_maze_lev
? ROOM
: level.flags.is_cavernous_lev ? CORR : DOOR;
unearth_objs(x, y);
break;
}
if (!oldplace) {
ttmp->ntrap = ftrap;
ftrap = ttmp;
} else {
/* oldplace;
it shouldn't be possible to override a sokoban pit or hole
with some other trap, but we'll check just to be safe */
if (Sokoban)
maybe_finish_sokoban();
}
return ttmp;
}
void
fall_through(td, ftflags)
boolean td; /* td == TRUE : trap door or hole */
unsigned ftflags;
{
d_level dtmp;
char msgbuf[BUFSZ];
const char *dont_fall = 0;
int newlevel, bottom;
struct trap *t = (struct trap *) 0;
/* we'll fall even while levitating in Sokoban; otherwise, if we
won't fall and won't be told that we aren't falling, give up now */
if (Blind && Levitation && !Sokoban)
return;
bottom = dunlevs_in_dungeon(&u.uz);
/* when in the upper half of the quest, don't fall past the
middle "quest locate" level if hero hasn't been there yet */
if (In_quest(&u.uz)) {
int qlocate_depth = qlocate_level.dlevel;
/* deepest reached < qlocate implies current < qlocate */
if (dunlev_reached(&u.uz) < qlocate_depth)
bottom = qlocate_depth; /* early cut-off */
}
newlevel = dunlev(&u.uz); /* current level */
do {
newlevel++;
} while (!rn2(4) && newlevel < bottom);
if (td) {
t = t_at(u.ux, u.uy);
feeltrap(t);
if (!Sokoban && !(ftflags & TOOKPLUNGE)) {
if (t->ttyp == TRAPDOOR)
pline("A trap door opens up under you!");
else
pline("There's a gaping hole under you!");
}
} else
pline_The("%s opens up under you!", surface(u.ux, u.uy));
if (Sokoban && Can_fall_thru(&u.uz))
; /* KMH -- You can't escape the Sokoban level traps */
else if (Levitation || u.ustuck
|| (!Can_fall_thru(&u.uz) && !levl[u.ux][u.uy].candig)
|| ((Flying || is_clinger(youmonst.data)
|| (ceiling_hider(youmonst.data) && u.uundetected))
&& !(ftflags & TOOKPLUNGE))
|| (Inhell && !u.uevent.invoked && newlevel == bottom)) {
dont_fall = "don't fall in.";
} else if (youmonst.data->msize >= MZ_HUGE) {
dont_fall = "don't fit through.";
} else if (!next_to_u()) {
dont_fall = "are jerked back by your pet!";
}
if (dont_fall) {
You1(dont_fall);
/* hero didn't fall through, but any objects here might */
impact_drop((struct obj *) 0, u.ux, u.uy, 0);
if (!td) {
display_nhwindow(WIN_MESSAGE, FALSE);
pline_The("opening under you closes up.");
}
return;
}
if ((Flying || is_clinger(youmonst.data))
&& (ftflags & TOOKPLUNGE) && td && t)
You("%s down %s!",
Flying ? "swoop" : "deliberately drop",
(t->ttyp == TRAPDOOR)
? "through the trap door"
: "into the gaping hole");
if (*u.ushops)
shopdig(1);
if (Is_stronghold(&u.uz)) {
find_hell(&dtmp);
} else {
int dist = newlevel - dunlev(&u.uz);
dtmp.dnum = u.uz.dnum;
dtmp.dlevel = newlevel;
if (dist > 1)
You("fall down a %s%sshaft!", dist > 3 ? "very " : "",
dist > 2 ? "deep " : "");
}
if (!td)
Sprintf(msgbuf, "The hole in the %s above you closes up.",
ceiling(u.ux, u.uy));
schedule_goto(&dtmp, FALSE, TRUE, 0, (char *) 0,
!td ? msgbuf : (char *) 0);
}
/*
* Animate the given statue. May have been via shatter attempt, trap,
* or stone to flesh spell. Return a monster if successfully animated.
* If the monster is animated, the object is deleted. If fail_reason
* is non-null, then fill in the reason for failure (or success).
*
* The cause of animation is:
*
* ANIMATE_NORMAL - hero "finds" the monster
* ANIMATE_SHATTER - hero tries to destroy the statue
* ANIMATE_SPELL - stone to flesh spell hits the statue
*
* Perhaps x, y is not needed if we can use get_obj_location() to find
* the statue's location... ???
*
* Sequencing matters:
* create monster; if it fails, give up with statue intact;
* give "statue comes to life" message;
* if statue belongs to shop, have shk give "you owe" message;
* transfer statue contents to monster (after stolen_value());
* delete statue.
* [This ordering means that if the statue ends up wearing a cloak of
* invisibility or a mummy wrapping, the visibility checks might be
* wrong, but to avoid that we'd have to clone the statue contents
* first in order to give them to the monster before checking their
* shop status--it's not worth the hassle.]
*/
struct monst *
animate_statue(statue, x, y, cause, fail_reason)
struct obj *statue;
xchar x, y;
int cause;
int *fail_reason;
{
int mnum = statue->corpsenm;
struct permonst *mptr = &mons[mnum];
struct monst *mon = 0, *shkp;
struct obj *item;
coord cc;
boolean historic = (Role_if(PM_ARCHEOLOGIST)
&& (statue->spe & STATUE_HISTORIC) != 0),
golem_xform = FALSE, use_saved_traits;
const char *comes_to_life;
char statuename[BUFSZ], tmpbuf[BUFSZ];
static const char historic_statue_is_gone[] =
"that the historic statue is now gone";
if (cant_revive(&mnum, TRUE, statue)) {
/* mnum has changed; we won't be animating this statue as itself */
if (mnum != PM_DOPPELGANGER)
mptr = &mons[mnum];
use_saved_traits = FALSE;
} else if (is_golem(mptr) && cause == ANIMATE_SPELL) {
/* statue of any golem hit by stone-to-flesh becomes flesh golem */
golem_xform = (mptr != &mons[PM_FLESH_GOLEM]);
mnum = PM_FLESH_GOLEM;
mptr = &mons[PM_FLESH_GOLEM];
use_saved_traits = (has_omonst(statue) && !golem_xform);
} else {
use_saved_traits = has_omonst(statue);
}
if (use_saved_traits) {
/* restore a petrified monster */
cc.x = x, cc.y = y;
mon = montraits(statue, &cc, (cause == ANIMATE_SPELL));
if (mon && mon->mtame && !mon->isminion)
wary_dog(mon, TRUE);
} else {
/* statues of unique monsters from bones or wishing end
up here (cant_revive() sets mnum to be doppelganger;
mptr reflects the original form for use by newcham()) */
if ((mnum == PM_DOPPELGANGER && mptr != &mons[PM_DOPPELGANGER])
/* block quest guards from other roles */
|| (mptr->msound == MS_GUARDIAN
&& quest_info(MS_GUARDIAN) != mnum)) {
mon = makemon(&mons[PM_DOPPELGANGER], x, y,
NO_MINVENT | MM_NOCOUNTBIRTH | MM_ADJACENTOK);
/* if hero has protection from shape changers, cham field will
be NON_PM; otherwise, set form to match the statue */
if (mon && mon->cham >= LOW_PM)
(void) newcham(mon, mptr, FALSE, FALSE);
} else
mon = makemon(mptr, x, y, (cause == ANIMATE_SPELL)
? (NO_MINVENT | MM_ADJACENTOK)
: NO_MINVENT);
}
if (!mon) {
if (fail_reason)
*fail_reason = unique_corpstat(&mons[statue->corpsenm])
? AS_MON_IS_UNIQUE
: AS_NO_MON;
return (struct monst *) 0;
}
/* a non-montraits() statue might specify gender */
if (statue->spe & STATUE_MALE)
mon->female = FALSE;
else if (statue->spe & STATUE_FEMALE)
mon->female = TRUE;
/* if statue has been named, give same name to the monster */
if (has_oname(statue) && !unique_corpstat(mon->data))
mon = christen_monst(mon, ONAME(statue));
/* mimic statue becomes seen mimic; other hiders won't be hidden */
if (M_AP_TYPE(mon))
seemimic(mon);
else
mon->mundetected = FALSE;
mon->msleeping = 0;
if (cause == ANIMATE_NORMAL || cause == ANIMATE_SHATTER) {
/* trap always releases hostile monster */
mon->mtame = 0; /* (might be petrified pet tossed onto trap) */
mon->mpeaceful = 0;
set_malign(mon);
}
comes_to_life = !canspotmon(mon)
? "disappears"
: golem_xform
? "turns into flesh"
: (nonliving(mon->data) || is_vampshifter(mon))
? "moves"
: "comes to life";
if ((x == u.ux && y == u.uy) || cause == ANIMATE_SPELL) {
/* "the|your|Manlobbi's statue [of a wombat]" */
shkp = shop_keeper(*in_rooms(mon->mx, mon->my, SHOPBASE));
Sprintf(statuename, "%s%s", shk_your(tmpbuf, statue),
(cause == ANIMATE_SPELL
/* avoid "of a shopkeeper" if it's Manlobbi himself
(if carried, it can't be unpaid--hence won't be
described as "Manlobbi's statue"--because there
wasn't any living shk when statue was picked up) */
&& (mon != shkp || carried(statue)))
? xname(statue)
: "statue");
pline("%s %s!", upstart(statuename), comes_to_life);
} else if (Hallucination) { /* They don't know it's a statue */
pline_The("%s suddenly seems more animated.", rndmonnam((char *) 0));
} else if (cause == ANIMATE_SHATTER) {
if (cansee(x, y))
Sprintf(statuename, "%s%s", shk_your(tmpbuf, statue),
xname(statue));
else
Strcpy(statuename, "a statue");
pline("Instead of shattering, %s suddenly %s!", statuename,
comes_to_life);
} else { /* cause == ANIMATE_NORMAL */
You("find %s posing as a statue.",
canspotmon(mon) ? a_monnam(mon) : something);
if (!canspotmon(mon) && Blind)
map_invisible(x, y);
stop_occupation();
}
/* if this isn't caused by a monster using a wand of striking,
there might be consequences for the hero */
if (!context.mon_moving) {
/* if statue is owned by a shop, hero will have to pay for it;
stolen_value gives a message (about debt or use of credit)
which refers to "it" so needs to follow a message describing
the object ("the statue comes to life" one above) */
if (cause != ANIMATE_NORMAL && costly_spot(x, y)
&& (carried(statue) ? statue->unpaid : !statue->no_charge)
&& (shkp = shop_keeper(*in_rooms(x, y, SHOPBASE))) != 0
/* avoid charging for Manlobbi's statue of Manlobbi
if stone-to-flesh is used on petrified shopkeep */
&& mon != shkp)
(void) stolen_value(statue, x, y, (boolean) shkp->mpeaceful,
FALSE);
if (historic) {
You_feel("guilty %s.", historic_statue_is_gone);
adjalign(-1);
}
} else {
if (historic && cansee(x, y))
You_feel("regret %s.", historic_statue_is_gone);
/* no alignment penalty */
}
/* transfer any statue contents to monster's inventory */
while ((item = statue->cobj) != 0) {
obj_extract_self(item);
(void) mpickobj(mon, item);
}
m_dowear(mon, TRUE);
/* in case statue is wielded and hero zaps stone-to-flesh at self */
if (statue->owornmask)
remove_worn_item(statue, TRUE);
/* statue no longer exists */
delobj(statue);
/* avoid hiding under nothing */
if (x == u.ux && y == u.uy && Upolyd && hides_under(youmonst.data)
&& !OBJ_AT(x, y))
u.uundetected = 0;
if (fail_reason)
*fail_reason = AS_OK;
return mon;
}
/*
* You've either stepped onto a statue trap's location or you've triggered a
* statue trap by searching next to it or by trying to break it with a wand
* or pick-axe.
*/
struct monst *
activate_statue_trap(trap, x, y, shatter)
struct trap *trap;
xchar x, y;
boolean shatter;
{
struct monst *mtmp = (struct monst *) 0;
struct obj *otmp = sobj_at(STATUE, x, y);
int fail_reason;
/*
* Try to animate the first valid statue. Stop the loop when we
* actually create something or the failure cause is not because
* the mon was unique.
*/
deltrap(trap);
while (otmp) {
mtmp = animate_statue(otmp, x, y,
shatter ? ANIMATE_SHATTER : ANIMATE_NORMAL,
&fail_reason);
if (mtmp || fail_reason != AS_MON_IS_UNIQUE)
break;
otmp = nxtobj(otmp, STATUE, TRUE);
}
feel_newsym(x, y);
return mtmp;
}
STATIC_OVL boolean
keep_saddle_with_steedcorpse(steed_mid, objchn, saddle)
unsigned steed_mid;
struct obj *objchn, *saddle;
{
if (!saddle)
return FALSE;
while (objchn) {
if (objchn->otyp == CORPSE && has_omonst(objchn)) {
struct monst *mtmp = OMONST(objchn);
if (mtmp->m_id == steed_mid) {
/* move saddle */
xchar x, y;
if (get_obj_location(objchn, &x, &y, 0)) {
obj_extract_self(saddle);
place_object(saddle, x, y);
stackobj(saddle);
}
return TRUE;
}
}
if (Has_contents(objchn)
&& keep_saddle_with_steedcorpse(steed_mid, objchn->cobj, saddle))
return TRUE;
objchn = objchn->nobj;
}
return FALSE;
}
/* monster or you go through and possibly destroy a web.
return TRUE if could go through. */
boolean
mu_maybe_destroy_web(mtmp, domsg, trap)
struct monst *mtmp;
boolean domsg;
struct trap *trap;
{
boolean isyou = (mtmp == &youmonst);
struct permonst *mptr = mtmp->data;
if (amorphous(mptr) || is_whirly(mptr) || flaming(mptr)
|| unsolid(mptr) || mptr == &mons[PM_GELATINOUS_CUBE]) {
xchar x = trap->tx;
xchar y = trap->ty;
if (flaming(mptr) || acidic(mptr)) {
if (domsg) {
if (isyou)
You("%s %s spider web!",
(flaming(mptr)) ? "burn" : "dissolve",
a_your[trap->madeby_u]);
else
pline("%s %s %s spider web!", Monnam(mtmp),
(flaming(mptr)) ? "burns" : "dissolves",
a_your[trap->madeby_u]);
}
deltrap(trap);
newsym(x, y);
return TRUE;
}
if (domsg) {
if (isyou) {
You("flow through %s spider web.", a_your[trap->madeby_u]);
} else {
pline("%s flows through %s spider web.", Monnam(mtmp),
a_your[trap->madeby_u]);
seetrap(trap);
}
}
return TRUE;
}
return FALSE;
}
/* make a single arrow/dart/rock for a trap to shoot or drop */
STATIC_OVL struct obj *
t_missile(otyp, trap)
int otyp;
struct trap *trap;
{
struct obj *otmp = mksobj(otyp, TRUE, FALSE);
otmp->quan = 1L;
otmp->owt = weight(otmp);
otmp->opoisoned = 0;
otmp->ox = trap->tx, otmp->oy = trap->ty;
return otmp;
}
void
set_utrap(tim, typ)
unsigned tim, typ;
{
u.utrap = tim;
/* FIXME:
* utraptype==0 is bear trap rather than 'none'; we probably ought
* to change that but can't do so until save file compatability is
* able to be broken.
*/
u.utraptype = tim ? typ : 0;
float_vs_flight(); /* maybe block Lev and/or Fly */
}
void
reset_utrap(msg)
boolean msg;
{
boolean was_Lev = (Levitation != 0), was_Fly = (Flying != 0);
set_utrap(0, 0);
if (msg) {
if (!was_Lev && Levitation)
float_up();
if (!was_Fly && Flying)
You("can fly.");
}
}
void
dotrap(trap, trflags)
register struct trap *trap;
unsigned trflags;
{
register int ttype = trap->ttyp;
struct obj *otmp;
boolean already_seen = trap->tseen,
forcetrap = ((trflags & FORCETRAP) != 0
|| (trflags & FAILEDUNTRAP) != 0),
webmsgok = (trflags & NOWEBMSG) == 0,
forcebungle = (trflags & FORCEBUNGLE) != 0,
plunged = (trflags & TOOKPLUNGE) != 0,
viasitting = (trflags & VIASITTING) != 0,
conj_pit = conjoined_pits(trap, t_at(u.ux0, u.uy0), TRUE),
adj_pit = adj_nonconjoined_pit(trap);
int oldumort;
int steed_article = ARTICLE_THE;
nomul(0);
/* KMH -- You can't escape the Sokoban level traps */
if (Sokoban && (is_pit(ttype) || is_hole(ttype))) {
/* The "air currents" message is still appropriate -- even when
* the hero isn't flying or levitating -- because it conveys the
* reason why the player cannot escape the trap with a dexterity
* check, clinging to the ceiling, etc.
*/
pline("Air currents pull you down into %s %s!",
a_your[trap->madeby_u],
defsyms[trap_to_defsym(ttype)].explanation);
/* then proceed to normal trap effect */
} else if (already_seen && !forcetrap) {
if ((Levitation || (Flying && !plunged))
&& (is_pit(ttype) || ttype == HOLE || ttype == BEAR_TRAP)) {
You("%s over %s %s.", Levitation ? "float" : "fly",
a_your[trap->madeby_u],
defsyms[trap_to_defsym(ttype)].explanation);
return;
}
if (!Fumbling && ttype != MAGIC_PORTAL && ttype != VIBRATING_SQUARE
&& ttype != ANTI_MAGIC && !forcebungle && !plunged
&& !conj_pit && !adj_pit
&& (!rn2(5) || (is_pit(ttype)
&& is_clinger(youmonst.data)))) {
You("escape %s %s.", (ttype == ARROW_TRAP && !trap->madeby_u)
? "an"
: a_your[trap->madeby_u],
defsyms[trap_to_defsym(ttype)].explanation);
return;
}
}
if (u.usteed) {
u.usteed->mtrapseen |= (1 << (ttype - 1));
/* suppress article in various steed messages when using its
name (which won't occur when hallucinating) */
if (has_mname(u.usteed) && !Hallucination)
steed_article = ARTICLE_NONE;
}
switch (ttype) {
case ARROW_TRAP:
if (trap->once && trap->tseen && !rn2(15)) {
You_hear("a loud click!");
deltrap(trap);
newsym(u.ux, u.uy);
break;
}
trap->once = 1;
seetrap(trap);
pline("An arrow shoots out at you!");
otmp = t_missile(ARROW, trap);
if (u.usteed && !rn2(2) && steedintrap(trap, otmp)) {
; /* nothing */
} else if (thitu(8, dmgval(otmp, &youmonst), &otmp, "arrow")) {
if (otmp)
obfree(otmp, (struct obj *) 0);
} else {
place_object(otmp, u.ux, u.uy);
if (!Blind)
otmp->dknown = 1;
stackobj(otmp);
newsym(u.ux, u.uy);
}
break;
case DART_TRAP:
if (trap->once && trap->tseen && !rn2(15)) {
You_hear("a soft click.");
deltrap(trap);
newsym(u.ux, u.uy);
break;
}
trap->once = 1;
seetrap(trap);
pline("A little dart shoots out at you!");
otmp = t_missile(DART, trap);
if (!rn2(6))
otmp->opoisoned = 1;
oldumort = u.umortality;
if (u.usteed && !rn2(2) && steedintrap(trap, otmp)) {