/* NetHack 5.0 mthrowu.c $NHDT-Date: 1781973057 2026/06/20 16:30:57 $ $NHDT-Branch: NetHack-5.0 $:$NHDT-Revision: 1.192 $ */

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */

/*-Copyright (c) Pasi Kallinen, 2016. */

/* NetHack may be freely redistributed. See license for details. */

#include "hack.h"

staticfn int monmulti(struct monst *, struct obj *, struct obj *);

staticfn void monshoot(struct monst *, struct obj *, struct obj *);

staticfn boolean ucatchgem(struct obj *, struct monst *);

staticfn boolean u_catch_thrown_obj(struct obj *);

staticfn const char *breathwep_name(int);

staticfn boolean drop_throw(struct obj *, boolean, coordxy, coordxy);

staticfn boolean blocking_terrain(coordxy, coordxy);

staticfn int m_lined_up(struct monst *, struct monst *) NONNULLARG12;

staticfn void return_from_mtoss(struct monst *, struct obj *, boolean);

#define URETREATING(x, y) \

(distmin(u.ux, u.uy, x, y) > distmin(u.ux0, u.uy0, x, y))

/*

* Keep consistent with breath weapons in zap.c, and AD_* in monattk.h.

*/

static NEARDATA const char *breathwep[] = {

"fragments", "fire", "frost", "sleep gas", "a disintegration blast",

"lightning", "poison gas", "acid", "strange breath #8",

"strange breath #9"

};

/* hallucinatory ray types */

static const char *const hallublasts[] = {

"asteroids", "beads", "bubbles", "butterflies", "champagne", "chaos",

"coins", "cotton candy", "crumbs", "dark matter", "darkness", "data",

"dust specks", "emoticons", "emotions", "entropy", "flowers", "foam",

"fog", "gamma rays", "gelatin", "gemstones", "ghosts", "glass shards",

"glitter", "good vibes", "gravel", "gravity", "gravy", "grawlixes",

"holy light", "hornets", "hot air", "hyphens", "hypnosis", "infrared",

"insects", "jargon", "laser beams", "leaves", "lightening", "logic gates",

"magma", "marbles", "mathematics", "megabytes", "metal shavings",

"metapatterns", "meteors", "mist", "mud", "music", "nanites", "needles",

"noise", "nostalgia", "oil", "paint", "photons", "pixels", "plasma",

"polarity", "powder", "powerups", "prismatic light", "pure logic",

"purple", "radio waves", "rainbows", "rock music", "rocket fuel", "rope",

"sadness", "salt", "sand", "scrolls", "sludge", "smileys", "snowflakes",

"sparkles", "specularity", "spores", "stars", "steam", "tetrahedrons",

"text", "the past", "tornadoes", "toxic waste", "ultraviolet light",

"viruses", "water", "waveforms", "wind", "X-rays", "zorkmids"

};

/* Return a random hallucinatory blast. */

const char *

rnd_hallublast(void)

{

return ROLL_FROM(hallublasts);

}

boolean

m_has_launcher_and_ammo(struct monst *mtmp)

{

struct obj *mwep = MON_WEP(mtmp);

if (mwep && is_launcher(mwep)) {

struct obj *otmp;

for (otmp = mtmp->minvent; otmp; otmp = otmp->nobj)

if (ammo_and_launcher(otmp, mwep))

return TRUE;

}

return FALSE;

}

/* hero is hit by something other than a monster (though it could be a

missile thrown or shot by a monster) */

int

thitu(

int tlev, /* pseudo-level used when deciding whether to hit hero's AC */

int dam,

struct obj **objp,

const char *name) /* if null, then format `*objp' */

{

struct obj *obj = objp ? *objp : 0;

const char *onm, *knm;

boolean is_acid, named = (name != 0);

int kprefix = KILLED_BY_AN, dieroll;

char onmbuf[BUFSZ], knmbuf[BUFSZ];

if (!name) {

if (!obj)

panic("thitu: name & obj both null?");

name = strcpy(onmbuf,

(obj->quan > 1L) ? doname(obj) : mshot_xname(obj));

knm = strcpy(knmbuf, killer_xname(obj));

kprefix = KILLED_BY; /* killer_name supplies "an" if warranted */

} else {

knm = name;

/* [perhaps ought to check for plural here too] */

if (!strncmpi(name, "the ", 4) || !strncmpi(name, "an ", 3)

|| !strncmpi(name, "a ", 2))

kprefix = KILLED_BY;

}

onm = (obj && obj_is_pname(obj)) ? the(name)

: (obj && obj->quan > 1L) ? name

: an(name);

is_acid = (obj && obj->otyp == ACID_VENOM);

if (u.uac + tlev <= (dieroll = rnd(20))) {

++gm.mesg_given;

if (Blind || !flags.verbose) {

pline("It misses.");

} else if (u.uac + tlev <= dieroll - 2) {

if (onm != onmbuf)

Strcpy(onmbuf, onm); /* [modifiable buffer for upstart()] */

pline("%s %s you.", upstart(onmbuf), vtense(onmbuf, "miss"));

} else

You("are almost hit by %s.", onm);

return 0;

} else {

if (Blind || !flags.verbose)

You("are hit%s", exclam(dam));

else

You("are hit by %s%s", onm, exclam(dam));

if (is_acid && Acid_resistance) {

pline("It doesn't seem to hurt you.");

monstseesu(M_SEEN_ACID);

} else if (obj && stone_missile(obj)

&& passes_rocks(gy.youmonst.data)) {

/* use 'named' as an approximation for "hitting from above";

we avoid "passes through you" for horizontal flight path

because missile stops and that wording would suggest that

it should keep going */

pline("It %s you.",

named ? "passes harmlessly through" : "doesn't harm");

} else if (obj && obj->oclass == POTION_CLASS) {

/* an explosion which scatters objects might hit hero with one

(potions deliberately thrown at hero are handled by m_throw) */

potionhit(&gy.youmonst, obj, POTHIT_OTHER_THROW);

*objp = obj = 0; /* potionhit() uses up the potion */

} else {

if (obj && objects[obj->otyp].oc_material == SILVER

&& Hate_silver) {

/* extra damage already applied by dmgval() */

pline_The("silver sears your flesh!");

exercise(A_CON, FALSE);

}

if (is_acid) {

pline("It burns!");

monstunseesu(M_SEEN_ACID);

}

losehp(dam, knm, kprefix); /* acid damage */

exercise(A_STR, FALSE);

}

return 1;

}

}

/* Be sure this corresponds with what happens to player-thrown objects in

* dothrow.c (for consistency). --KAA

* Returns FALSE if object still exists (not destroyed).

*/

staticfn boolean

drop_throw(

struct obj *obj,

boolean ohit,

coordxy x,

coordxy y)

{

boolean broken;

if (obj->otyp == CREAM_PIE || obj->oclass == VENOM_CLASS

|| (ohit && obj->otyp == EGG)) {

broken = TRUE;

} else {

broken = (ohit && should_mulch_missile(obj));

}

if (broken) {

delobj(obj);

} else {

if (down_gate(x, y) != -1)

broken = ship_object(obj, x, y, FALSE);

if (!broken) {

struct monst *mtmp = m_at(x, y);

if (!(broken = flooreffects(obj, x, y, "fall"))) {

place_object(obj, x, y);

if (!mtmp && u_at(x, y))

mtmp = &gy.youmonst;

if (mtmp && ohit)

passive_obj(mtmp, obj, (struct attack *) 0);

stackobj(obj);

}

}

}

gt.thrownobj = 0;

return broken;

}

/* calculate multishot volley count for mtmp throwing otmp (if not ammo) or

shooting otmp with mwep (if otmp is ammo and mwep appropriate launcher) */

staticfn int

monmulti(

struct monst *mtmp,

struct obj *otmp, struct obj *mwep)

{

int multishot = 1;

if (otmp->quan > 1L /* no point checking if there's only 1 */

/* ammo requires corresponding launcher be wielded */

&& (is_ammo(otmp)

? matching_launcher(otmp, mwep)

/* otherwise any stackable (non-ammo) weapon */

: otmp->oclass == WEAPON_CLASS)

&& !mtmp->mconf) {

/* Assumes lords are skilled, princes are expert */

if (is_prince(mtmp->data))

multishot += 2;

else if (is_lord(mtmp->data))

multishot++;

/* fake players treated as skilled (regardless of role limits) */

else if (is_mplayer(mtmp->data))

multishot++;

/* this portion is different from hero multishot; from slash'em?

*/

/* Elven Craftsmanship makes for light, quick bows */

if (otmp->otyp == ELVEN_ARROW && !otmp->cursed)

multishot++;

/* for arrow, we checked bow&arrow when entering block, but for

bow, so far we've only validated that otmp is a weapon stack;

need to verify that it's a stack of arrows rather than darts */

if (mwep && mwep->otyp == ELVEN_BOW && ammo_and_launcher(otmp, mwep)

&& !mwep->cursed)

multishot++;

/* 1/3 of launcher enchantment */

if (ammo_and_launcher(otmp, mwep) && mwep->spe > 1)

multishot += (long) rounddiv(mwep->spe, 3);

/* Some randomness */

multishot = rnd((int) multishot);

/* class bonus */

multishot += multishot_class_bonus(monsndx(mtmp->data), otmp, mwep);

/* racial bonus */

if ((is_elf(mtmp->data) && otmp->otyp == ELVEN_ARROW

&& mwep && mwep->otyp == ELVEN_BOW)

|| (is_orc(mtmp->data) && otmp->otyp == ORCISH_ARROW

&& mwep && mwep->otyp == ORCISH_BOW)

|| (is_gnome(mtmp->data) && otmp->otyp == CROSSBOW_BOLT

&& mwep && mwep->otyp == CROSSBOW))

multishot++;

}

if (otmp->quan < multishot)

multishot = (int) otmp->quan;

if (multishot < 1)

multishot = 1;

return multishot;

}

/* mtmp throws otmp, or shoots otmp with mwep, at hero or at monster mtarg */

staticfn void

monshoot(struct monst *mtmp, struct obj *otmp, struct obj *mwep)

{

struct monst *mtarg = gm.mtarget;

int dm = distmin(mtmp->mx, mtmp->my,

mtarg ? mtarg->mx : mtmp->mux,

mtarg ? mtarg->my : mtmp->muy),

multishot = monmulti(mtmp, otmp, mwep);

/*

* Caller must have called linedup() to set up <gt.tbx, gt.tby>.

*/

if (canseemon(mtmp)) {

const char *onm;

char onmbuf[BUFSZ], trgbuf[BUFSZ];

if (multishot > 1) {

/* "N arrows"; multishot > 1 implies otmp->quan > 1, so

xname()'s result will already be pluralized */

Sprintf(onmbuf, "%d %s", multishot, xname(otmp));

onm = onmbuf;

} else {

/* "an arrow" */

onm = singular(otmp, xname);

onm = obj_is_pname(otmp) ? the(onm) : an(onm);

}

gm.m_shot.s = ammo_and_launcher(otmp, mwep) ? TRUE : FALSE;

Strcpy(trgbuf, mtarg ? some_mon_nam(mtarg) : "");

set_msg_xy(mtmp->mx, mtmp->my);

pline("%s %s %s%s%s!", Monnam(mtmp),

gm.m_shot.s ? "shoots" : "throws", onm,

mtarg ? " at " : "", trgbuf);

gm.m_shot.o = otmp->otyp;

} else {

gm.m_shot.o = STRANGE_OBJECT; /* don't give multishot feedback */

}

gm.m_shot.n = multishot;

for (gm.m_shot.i = 1; gm.m_shot.i <= gm.m_shot.n; gm.m_shot.i++) {

m_throw(mtmp, mtmp->mx, mtmp->my, sgn(gt.tbx), sgn(gt.tby), dm, otmp);

/* conceptually all N missiles are in flight at once, but

if mtmp gets killed (shot kills adjacent gas spore and

triggers explosion, perhaps), inventory will be dropped

and otmp might go away via merging into another stack */

if (DEADMONSTER(mtmp) && gm.m_shot.i < gm.m_shot.n)

/* cancel pending shots (perhaps ought to give a message here

since we gave one above about throwing/shooting N missiles) */

break; /* endmultishot(FALSE); */

}

/* reset 'gm.m_shot' */

gm.m_shot.n = gm.m_shot.i = 0;

gm.m_shot.o = STRANGE_OBJECT;

gm.m_shot.s = FALSE;

}

/* an object launched by someone/thing other than player attacks a monster;

return 1 if the object has stopped moving (hit or its range used up);

can anger the monster, if this happened due to hero (eg. exploding

bag of holding throwing the items) */

boolean

ohitmon(

struct monst *mtmp, /* accidental target, located at <gb.bhitpos.x,.y> */

struct obj *otmp, /* missile; might be destroyed by drop_throw */

int range, /* how much farther will object travel if it misses;

* use -1 to signify to keep going even after hit,

* unless it's gone (for rolling_boulder_traps) */

boolean verbose) /* give messages even when you can't see what happened */

{

int damage, tmp;

boolean vis, ismimic, objgone;

struct obj *mon_launcher = gm.marcher ? MON_WEP(gm.marcher) : NULL;

/* assert(otmp != NULL); */

gn.notonhead = (gb.bhitpos.x != mtmp->mx || gb.bhitpos.y != mtmp->my);

ismimic = M_AP_TYPE(mtmp) && M_AP_TYPE(mtmp) != M_AP_MONSTER;

vis = cansee(gb.bhitpos.x, gb.bhitpos.y);

if (vis)

observe_object(otmp);

tmp = 5 + find_mac(mtmp) + omon_adj(mtmp, otmp, FALSE);

/* High level monsters will be more likely to hit */

/* This check applies only if this monster is the target

* the archer was aiming at. */

if (gm.marcher && gm.mtarget == mtmp) {

if (gm.marcher->m_lev > 5)

tmp += gm.marcher->m_lev - 5;

if (mon_launcher && mon_launcher->oartifact)

tmp += spec_abon(mon_launcher, mtmp);

}

if (tmp < rnd(20)) {

if (!ismimic) {

if (vis)

miss(distant_name(otmp, mshot_xname), mtmp);

else if (verbose && !gm.mtarget)

pline("It is missed.");

}

if (!range) { /* Last position; object drops */

(void) drop_throw(otmp, 0, mtmp->mx, mtmp->my);

return 1;

}

} else if (otmp->oclass == POTION_CLASS) {

if (ismimic)

seemimic(mtmp);

mtmp->msleeping = 0;

/* probably thrown by a monster rather than 'other', but the

distinction only matters when hitting the hero */

potionhit(mtmp, otmp, POTHIT_OTHER_THROW);

return 1;

} else {

int material = objects[otmp->otyp].oc_material;

boolean harmless = (stone_missile(otmp) && passes_rocks(mtmp->data));

damage = dmgval(otmp, mtmp);

if (otmp->otyp == ACID_VENOM && resists_acid(mtmp))

damage = 0;

#if 0 /* can't use this because we don't have the attacker */

if (is_orc(mtmp->data) && is_elf(?magr?))

damage++;

#endif

if (ismimic)

seemimic(mtmp);

mtmp->msleeping = 0;

Soundeffect(se_splat_egg, 35);

if (vis) {

if (otmp->otyp == EGG) {

pline("Splat! %s is hit with %s egg!", Monnam(mtmp),

otmp->known ? an(mons[otmp->corpsenm].pmnames[NEUTRAL])

: "an");

} else {

char how[BUFSZ];

if (!harmless)

Strcpy(how, exclam(damage)); /* "!" or "." */

else

Sprintf(how, " but passes harmlessly through %.9s.",

mhim(mtmp));

hit(distant_name(otmp, mshot_xname), mtmp, how);

}

} else if (verbose && !gm.mtarget)

pline("%s%s is hit%s", (otmp->otyp == EGG) ? "Splat! " : "",

Monnam(mtmp), exclam(damage));

if (otmp->opoisoned && is_poisonable(otmp)) {

if (resists_poison(mtmp)) {

if (vis)

pline_The("poison doesn't seem to affect %s.",

mon_nam(mtmp));

} else {

if (rn2(30)) {

damage += rnd(6);

} else {

if (vis)

pline_The("poison was deadly...");

damage = mtmp->mhp;

}

}

}

if (material == SILVER && mon_hates_silver(mtmp)) {

boolean flesh = (!noncorporeal(mtmp->data)

&& !amorphous(mtmp->data));

/* note: extra silver damage is handled by dmgval() */

if (vis) {

char *m_name = mon_nam(mtmp);

if (flesh) /* s_suffix returns a modifiable buffer */

m_name = strcat(s_suffix(m_name), " flesh");

pline_The("silver sears %s!", m_name);

} else if (verbose && !gm.mtarget) {

pline("%s is seared!", flesh ? "Its flesh" : "It");

}

}

if (otmp->otyp == ACID_VENOM && cansee(mtmp->mx, mtmp->my)) {

if (resists_acid(mtmp)) {

if (vis || (verbose && !gm.mtarget))

pline("%s is unaffected.", Monnam(mtmp));

} else {

if (vis)

pline_The("%s burns %s!", hliquid("acid"), mon_nam(mtmp));

else if (verbose && !gm.mtarget)

pline("It is burned!");

}

}

if (otmp->otyp == EGG && touch_petrifies(&mons[otmp->corpsenm])) {

if (!munstone(mtmp, FALSE))

minstapetrify(mtmp, FALSE);

if (resists_ston(mtmp))

damage = 0;

}

/* might already be dead (if petrified) */

if (!harmless && !DEADMONSTER(mtmp)) {

mtmp->mhp -= damage;

if (DEADMONSTER(mtmp)) {

if (vis || (verbose && !gm.mtarget))

pline("%s is %s!", Monnam(mtmp),

(nonliving(mtmp->data) || is_vampshifter(mtmp)

|| !canspotmon(mtmp)) ? "destroyed" : "killed");

/* don't blame hero for unknown rolling boulder trap */

if (!svc.context.mon_moving

&& (otmp->otyp != BOULDER || range >= 0 || otmp->otrapped))

xkilled(mtmp, XKILL_NOMSG);

else

mondied(mtmp);

}

}

/* blinding venom and cream pie do 0 damage, but verify

that the target is still alive anyway */

if (!DEADMONSTER(mtmp)

&& can_blnd((struct monst *) 0, mtmp,

(uchar) ((otmp->otyp == BLINDING_VENOM) ? AT_SPIT

: AT_WEAP),

otmp)) {

if (vis && mtmp->mcansee)

/* shorten object name to reduce redundancy in the

two message [first via hit() above] sequence:

"The {splash of venom,cream pie} hits <mon>."

"<Mon> is blinded by the {venom,pie}." */

pline("%s is blinded by %s.", Monnam(mtmp),

the((otmp->oclass == VENOM_CLASS) ? "venom"

: (otmp->otyp == CREAM_PIE) ? "pie"

: xname(otmp))); /* catchall; not used */

mtmp->mcansee = 0;

tmp = (int) mtmp->mblinded + rnd(25) + 20;

if (tmp > 127)

tmp = 127;

mtmp->mblinded = tmp;

}

if (!DEADMONSTER(mtmp) && !svc.context.mon_moving)

setmangry(mtmp, TRUE);

objgone = drop_throw(otmp, 1, gb.bhitpos.x, gb.bhitpos.y);

if (!objgone && range == -1) { /* special case */

obj_extract_self(otmp); /* free it for motion again */

return FALSE;

}

return TRUE;

}

return FALSE;

}

/* hero catches gem thrown by mon iff poly'd into unicorn; might drop it */

staticfn boolean

ucatchgem(

struct obj *gem, /* caller has verified gem->oclass */

struct monst *mon)

{

/* won't catch rock or gray stone; catch (then drop) worthless glass */

if (gem->otyp <= LAST_GLASS_GEM && is_unicorn(gy.youmonst.data)) {

char *gem_xname = xname(gem),

*mon_s_name = s_suffix(mon_nam(mon));

if (gem->otyp >= FIRST_GLASS_GEM) {

You("catch the %s.", gem_xname);

You("are not interested in %s junk.", mon_s_name);

makeknown(gem->otyp);

dropy(gem);

} else {

You("accept %s gift in the spirit in which it was intended.",

mon_s_name);

(void) hold_another_object(gem, "You catch, but drop, %s.",

gem_xname, "You catch:");

}

return TRUE;

}

return FALSE;

}

/* hero may catch thrown obj. it is added to inventory, if possible */

staticfn boolean

u_catch_thrown_obj(struct obj *otmp)

{

int catch_chance = 100 - ACURR(A_DEX)

- ((Role_if(PM_MONK) || Role_if(PM_ROGUE)) ? 20 : 0);

if (!Blind && !Confusion && !Stunned && !Fumbling && !Unaware

&& otmp->oclass != VENOM_CLASS

&& !nohands(gy.youmonst.data) && freehand()

&& calc_capacity(otmp->owt) <= SLT_ENCUMBER && !rn2(catch_chance)) {

char buf[BUFSZ];

Snprintf(buf, BUFSZ, "You catch the %s!", simpleonames(otmp));

(void) hold_another_object(otmp, "You catch, but drop, the %s.",

simpleonames(otmp), buf);

return TRUE;

}

return FALSE;

}

#define MT_FLIGHTCHECK(pre,forcehit) \

(/* missile hits edge of screen */ \

!isok(gb.bhitpos.x + dx, gb.bhitpos.y + dy) \

/* missile hits the wall */ \

|| IS_OBSTRUCTED(levl[gb.bhitpos.x + dx][gb.bhitpos.y + dy].typ) \

/* missile hit closed door */ \

|| closed_door(gb.bhitpos.x + dx, gb.bhitpos.y + dy) \

/* missile might hit iron bars */ \

/* the random chance for small objects hitting bars is */ \

/* skipped when reaching them at point blank range */ \

|| (levl[gb.bhitpos.x + dx][gb.bhitpos.y + dy].typ == IRONBARS \

&& hits_bars(&singleobj, \

gb.bhitpos.x, gb.bhitpos.y, \

gb.bhitpos.x + dx, gb.bhitpos.y + dy, \

((pre) ? 0 : forcehit), 0)) \

/* Thrown objects "sink" */ \

|| (!(pre) && IS_SINK(levl[gb.bhitpos.x][gb.bhitpos.y].typ)) \

)

void

m_throw(

struct monst *mon, /* launching monster */

coordxy x, coordxy y, /* launch point */

coordxy dx, coordxy dy, /* direction */

int range, /* maximum distance */

struct obj *obj) /* missile (or stack providing it) */

{

struct monst *mtmp;

struct obj *singleobj;

boolean forcehit;

char sym = obj->oclass;

int hitu = 0, oldumort, blindinc = 0;

const struct throw_and_return_weapon *arw = autoreturn_weapon(obj);

boolean tethered_weapon =

(obj == MON_WEP(mon) && arw && arw->tethered != 0),

return_flightpath = FALSE;

gb.bhitpos.x = x;

gb.bhitpos.y = y;

gn.notonhead = FALSE; /* reset potentially stale value */

if (obj->quan == 1L) {

/*

* Remove object from minvent. This cannot be done later on;

* what if the player dies before then, leaving the monster

* with 0 daggers? (This caused the infamous 2^32-1 orcish

* dagger bug).

*

* VENOM is not in minvent--it should already be OBJ_FREE.

* The extract below does nothing.

*/

/* not possibly_unwield(), which checks the object's location,

not its existence */

if (MON_WEP(mon) == obj)

setmnotwielded(mon, obj);

obj_extract_self(obj);

singleobj = obj;

obj = (struct obj *) 0;

} else {

singleobj = splitobj(obj, 1L);

obj_extract_self(singleobj);

}

/* global pointer for missile object in OBJ_FREE state */

gt.thrownobj = singleobj;

singleobj->owornmask = 0L; /* threw one of multiple weapons in hand? */

if (!canseemon(mon))

clear_dknown(singleobj); /* singleobj->dknown = 0; */

if ((singleobj->cursed || singleobj->greased) && (dx || dy) && !rn2(7)) {

if (canseemon(mon) && flags.verbose) {

if (is_ammo(singleobj))

pline("%s misfires!", Monnam(mon));

else

pline("%s as %s throws it!", Tobjnam(singleobj, "slip"),

mon_nam(mon));

}

dx = rn2(3) - 1;

dy = rn2(3) - 1;

/* check validity of new direction */

if (!dx && !dy) {

(void) drop_throw(singleobj, 0, gb.bhitpos.x, gb.bhitpos.y);

return;

}

}

if (MT_FLIGHTCHECK(TRUE, 0)) {

(void) drop_throw(singleobj, 0, gb.bhitpos.x, gb.bhitpos.y);

return;

}

gm.mesg_given = 0; /* a 'missile misses' message has not yet been shown */

/* Note: drop_throw may destroy singleobj. Since obj must be destroyed

* early to avoid the dagger bug, anyone who modifies this code should

* be careful not to use either one after it's been freed.

*/

if (sym) {

if (!tethered_weapon) {

tmp_at(DISP_FLASH, obj_to_glyph(singleobj, rn2_on_display_rng));

} else {

tmp_at(DISP_TETHER, obj_to_glyph(singleobj, rn2_on_display_rng));

/*

* Considerations for a tethered object based on throwit()/bhit() :

* - wall of water/lava will stop items, and triggers return.

* - iron bars will stop items, and triggers return.

* - pass harmlessly through shades.

* X stops forward motion at hit monster/hero, triggers return.

* - closed door will stop item's forward motion, triggers return.

* - sinks stop forward motion, triggers fall, then return.

* - object can get tangled in a web, no return (tether snaps?).

* On return:

* X rn2(100) chance of returning to thrower's location.

* X if impaired and rn2(100) == 0,

* -50/50 chance of landing on the ground.

* -50/50 chance of hitting the thrower and causing

* rnd(3) damage.

*

*/

}

}

while (range-- > 0) { /* Actually the loop is always exited by break */

singleobj->ox = gb.bhitpos.x += dx;

singleobj->oy = gb.bhitpos.y += dy;

if (cansee(gb.bhitpos.x, gb.bhitpos.y))

observe_object(singleobj);

mtmp = m_at(gb.bhitpos.x, gb.bhitpos.y);

if (mtmp && shade_miss(mon, mtmp, singleobj, TRUE, TRUE)) {

/* if mtmp is a shade and missile passes harmlessly through it,

give message and skip it in order to keep going */

mtmp = (struct monst *) 0;

} else if (mtmp) {

if (ohitmon(mtmp, singleobj, range, TRUE))

break;

} else if (u_at(gb.bhitpos.x, gb.bhitpos.y)) {

if (gm.multi)

nomul(0);

/* hero might be poly'd into a unicorn */

if (singleobj->oclass == GEM_CLASS && ucatchgem(singleobj, mon))

break;

if (!tethered_weapon && u_catch_thrown_obj(singleobj))

break;

if (singleobj->oclass == POTION_CLASS) {

potionhit(&gy.youmonst, singleobj, POTHIT_MONST_THROW);

break;

}

oldumort = u.umortality;

switch (singleobj->otyp) {

case EGG:

if (!touch_petrifies(&mons[singleobj->corpsenm])) {

impossible("monster throwing egg type %d",

singleobj->corpsenm);

hitu = 0;

break;

}

FALLTHROUGH;

/*FALLTHRU*/

case CREAM_PIE:

case BLINDING_VENOM:

hitu = thitu(8, 0, &singleobj, (char *) 0);

break;

default:

{

int dam, hitv;

dam = dmgval(singleobj, &gy.youmonst);

hitv = 3 - distmin(u.ux, u.uy, mon->mx, mon->my);

if (hitv < -4)

hitv = -4;

/* [elves get a shooting bonus, orcs don't...] */

if (is_elf(mon->data)

&& objects[singleobj->otyp].oc_skill == -P_BOW) {

hitv++;

if (MON_WEP(mon) && MON_WEP(mon)->otyp == ELVEN_BOW)

hitv++;

if (singleobj->otyp == ELVEN_ARROW)

dam++;

}

if (bigmonst(gy.youmonst.data))

hitv++;

hitv += 8 + singleobj->spe;

if (dam < 1)

dam = 1;

if (singleobj->otyp != ACID_VENOM)

dam = Maybe_Half_Phys(dam);

hitu = thitu(hitv, dam, &singleobj, (char *) 0);

}

}

if (hitu && singleobj->opoisoned && is_poisonable(singleobj)) {

char onmbuf[BUFSZ], knmbuf[BUFSZ];

Strcpy(onmbuf, xname(singleobj));

Strcpy(knmbuf, killer_xname(singleobj));

poisoned(onmbuf, A_STR, knmbuf,

/* if damage triggered life-saving,

poison is limited to attrib loss */

(u.umortality > oldumort) ? 0 : 10, TRUE);

}

if (hitu && can_blnd((struct monst *) 0, &gy.youmonst,

(uchar) ((singleobj->otyp == BLINDING_VENOM)

? AT_SPIT

: AT_WEAP),

singleobj)) {

blindinc = rnd(25);

if (singleobj->otyp == CREAM_PIE) {

if (!Blind)

pline("Yecch! You've been creamed.");

else

pline("There's %s sticky all over your %s.",

something, body_part(FACE));

} else if (singleobj->otyp == BLINDING_VENOM) {

const char *eyes = body_part(EYE);

if (eyecount(gy.youmonst.data) != 1)

eyes = makeplural(eyes);

/* venom in the eyes */

if (!Blind)

pline_The("venom blinds you.");

else

Your("%s %s.", eyes, vtense(eyes, "sting"));

}

}

if (hitu && singleobj->otyp == EGG) {

if (!Stoned && !Stone_resistance

&& !(poly_when_stoned(gy.youmonst.data)

&& polymon(PM_STONE_GOLEM))) {

make_stoned(5L, (char *) 0, KILLED_BY, "");

}

}

stop_occupation();

if (hitu) {

if (!tethered_weapon) {

(void) drop_throw(singleobj, hitu, u.ux, u.uy);

} else {

/* ready for return journey */

return_flightpath = TRUE;

}

break;

}

}

forcehit = !rn2(5);

if (!range || MT_FLIGHTCHECK(FALSE, forcehit)) {

/* end of path or blocked */

if (singleobj) { /* hits_bars might have destroyed it */

/* note: pline(The(missile)) rather than pline_The(missile)

in order to get "Grimtooth" rather than "The Grimtooth" */

if (range && cansee(gb.bhitpos.x, gb.bhitpos.y)

&& IS_SINK(levl[gb.bhitpos.x][gb.bhitpos.y].typ))

pline("%s %s onto the sink.", The(mshot_xname(singleobj)),

otense(singleobj, Hallucination ? "plop" : "drop"));

else if (gm.m_shot.n > 1

&& (!gm.mesg_given

|| gb.bhitpos.x != u.ux || gb.bhitpos.y != u.uy)

&& (cansee(gb.bhitpos.x, gb.bhitpos.y)

|| (gm.marcher && canseemon(gm.marcher))))

pline("%s misses.", The(mshot_xname(singleobj)));

if (!tethered_weapon) {

(void) drop_throw(singleobj, 0,

gb.bhitpos.x, gb.bhitpos.y);

} else {

/*ready for return journey */

return_flightpath = TRUE;

}

}

break;

}

tmp_at(gb.bhitpos.x, gb.bhitpos.y);

nh_delay_output();

}

tmp_at(gb.bhitpos.x, gb.bhitpos.y);

nh_delay_output();

if (arw && return_flightpath)

return_from_mtoss(mon, singleobj, tethered_weapon);

/* mon could be DEADMONSTER now */

else

tmp_at(DISP_END, 0);

gm.mesg_given = 0; /* reset */

if (blindinc) {

u.ucreamed += blindinc;

make_blinded(BlindedTimeout + (long) blindinc, FALSE);

if (!Blind)

Your1(vision_clears);

}

/* note: all early returns follow drop_throw() which clears thrownobj */

gt.thrownobj = 0;

return;

}

#undef MT_FLIGHTCHECK

staticfn void

return_from_mtoss(

struct monst *magr,

struct obj *otmp,

boolean tethered_weapon)

{

boolean impaired = (magr->mconf || magr->mstun || magr->mblinded),

notcaught = FALSE, hits_thrower = FALSE;

coordxy x = gb.bhitpos.x, y = gb.bhitpos.y;

int made_it_back = rn2(100), dmg = 0;

if (otmp && made_it_back) {

/* it made it back to thrower's location */

if (tethered_weapon) {

tmp_at(DISP_END, BACKTRACK);

} else {

int dx = sgn(x - magr->mx),

dy = sgn(y - magr->my);

if (x != magr->mx || y != magr->my) {

tmp_at(DISP_FLASH, obj_to_glyph(otmp, rn2_on_display_rng));

while (isok(x, y) && (x != magr->mx || y != magr->my)) {

tmp_at(x, y);

nh_delay_output();

x -= dx;

y -= dy;

}

tmp_at(DISP_END, 0);

}

}

x = magr->mx;

y = magr->my;

if (!impaired && rn2(100)) {

/* FIXME: this should be moved to struct g (gd these days) */

static long do_not_annoy = 0;

if (!do_not_annoy || (svm.moves - do_not_annoy) > 500L) {

pline("%s to %s %s!", Tobjnam(otmp, "return"),

s_suffix(mon_nam(magr)), mbodypart(magr, HAND));

do_not_annoy = svm.moves;

}

if (otmp) {

add_to_minv(magr, otmp);

if (tethered_weapon) {

magr->mw = otmp;

otmp->owornmask |= W_WEP;

}

}

if (cansee(x, y))

newsym(x, y);

} else {

boolean mlevitating = FALSE; /* msg future-proofing only */

dmg = rn2(2);

if (!dmg) {

if (canseemon(magr)) {

pline("%s back to %s, landing %s %s %s.",

Tobjnam(otmp, "return"), mon_nam(magr),

mlevitating ? "beneath" : "at", mhis(magr),

makeplural(mbodypart(magr, FOOT)));

} else if (!Deaf) {

You_hear("%s land near %s.", Something, mon_nam(magr));

}

} else {

dmg += rnd(3);

if (canseemon(magr)) {

pline("%s back toward %s, hitting %s %s!",

Tobjnam(otmp, "fly"), mon_nam(magr),

mhis(magr), body_part(ARM));

} else if (!Deaf) {

You_hear("%s hit %s with a thud!", something,

mon_nam(magr));

}

hits_thrower = TRUE;

}

notcaught = TRUE;

}

} else {

/* it didn't make it back to thrower's location */

if (tethered_weapon)

tmp_at(DISP_END, 0);

You_hear("a loud snap!");

notcaught = TRUE;

}

if (otmp) {

if (hits_thrower) {

if (otmp->oartifact)

(void) artifact_hit((struct monst *) 0, magr, otmp, &dmg, 0);

magr->mhp -= dmg;

if (DEADMONSTER(magr))

monkilled(magr, canspotmon(magr) ? "" : (char *) 0, AD_PHYS);

}

if (notcaught) {

(void) snuff_candle(otmp);

if (!ship_object(otmp, x, y, FALSE)) {

if (flooreffects(otmp, x, y, "drop")) {

if (cansee(x, y))

newsym(x, y);

return;

}

place_object(otmp, x, y);

stackobj(otmp);

}

if (!Deaf && !Underwater) {

/* Some sound effects when item lands in water or lava */

if (is_pool(x, y) || (is_lava(x, y) && !is_flammable(otmp))) {

Soundeffect(se_splash, 50);

pline((weight(otmp) > 9) ? "Splash!" : "Plop!");

}

}

if (obj_sheds_light(otmp))

gv.vision_full_recalc = 1;

}

}

if (cansee(x, y))

newsym(x, y);

}

/* Monster throws item at another monster */

int

thrwmm(struct monst *mtmp, struct monst *mtarg)

{

struct obj *otmp, *mwep;

coordxy x, y;

boolean ispole;

/* Polearms won't be applied by monsters against other monsters */

if (mtmp->weapon_check == NEED_WEAPON || !MON_WEP(mtmp)) {

mtmp->weapon_check = NEED_RANGED_WEAPON;

/* mon_wield_item resets weapon_check as appropriate */

if (mon_wield_item(mtmp) != 0)

return M_ATTK_MISS;

}

/* Pick a weapon */

otmp = select_rwep(mtmp);

if (!otmp)

return M_ATTK_MISS;

ispole = is_pole(otmp);

x = mtmp->mx;

y = mtmp->my;

mwep = MON_WEP(mtmp); /* wielded weapon */

if (!ispole && m_lined_up(mtarg, mtmp)) {

int chance = max(BOLT_LIM - distmin(x, y, mtarg->mx, mtarg->my), 1);

if (!mtarg->mflee || !rn2(chance)) {

if (ammo_and_launcher(otmp, mwep)

&& dist2(mtmp->mx, mtmp->my, mtarg->mx, mtarg->my)

> PET_MISSILE_RANGE2)