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hack.fight.c revision 1.7
      1 /*	$NetBSD: hack.fight.c,v 1.7 2006/03/29 01:18:39 jnemeth Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
      5  * Amsterdam
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions are
     10  * met:
     11  *
     12  * - Redistributions of source code must retain the above copyright notice,
     13  * this list of conditions and the following disclaimer.
     14  *
     15  * - Redistributions in binary form must reproduce the above copyright
     16  * notice, this list of conditions and the following disclaimer in the
     17  * documentation and/or other materials provided with the distribution.
     18  *
     19  * - Neither the name of the Stichting Centrum voor Wiskunde en
     20  * Informatica, nor the names of its contributors may be used to endorse or
     21  * promote products derived from this software without specific prior
     22  * written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
     25  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     27  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     28  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     30  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     31  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     33  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     34  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     35  */
     36 
     37 /*
     38  * Copyright (c) 1982 Jay Fenlason <hack (at) gnu.org>
     39  * All rights reserved.
     40  *
     41  * Redistribution and use in source and binary forms, with or without
     42  * modification, are permitted provided that the following conditions
     43  * are met:
     44  * 1. Redistributions of source code must retain the above copyright
     45  *    notice, this list of conditions and the following disclaimer.
     46  * 2. Redistributions in binary form must reproduce the above copyright
     47  *    notice, this list of conditions and the following disclaimer in the
     48  *    documentation and/or other materials provided with the distribution.
     49  * 3. The name of the author may not be used to endorse or promote products
     50  *    derived from this software without specific prior written permission.
     51  *
     52  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     53  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
     54  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
     55  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     56  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     57  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     58  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     59  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     60  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     61  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     62  */
     63 
     64 #include <sys/cdefs.h>
     65 #ifndef lint
     66 __RCSID("$NetBSD: hack.fight.c,v 1.7 2006/03/29 01:18:39 jnemeth Exp $");
     67 #endif				/* not lint */
     68 
     69 #include "hack.h"
     70 #include "extern.h"
     71 
     72 static boolean  far_noise;
     73 static long     noisetime;
     74 
     75 /* hitmm returns 0 (miss), 1 (hit), or 2 (kill) */
     76 int
     77 hitmm(magr, mdef)
     78 	struct monst   *magr, *mdef;
     79 {
     80 	const struct permonst *pa = magr->data, *pd = mdef->data;
     81 	int             hit;
     82 	schar           tmp;
     83 	boolean         vis;
     84 	if (strchr("Eauy", pa->mlet))
     85 		return (0);
     86 	if (magr->mfroz)
     87 		return (0);	/* riv05!a3 */
     88 	tmp = pd->ac + pa->mlevel;
     89 	if (mdef->mconf || mdef->mfroz || mdef->msleep) {
     90 		tmp += 4;
     91 		if (mdef->msleep)
     92 			mdef->msleep = 0;
     93 	}
     94 	hit = (tmp > rnd(20));
     95 	if (hit)
     96 		mdef->msleep = 0;
     97 	vis = (cansee(magr->mx, magr->my) && cansee(mdef->mx, mdef->my));
     98 	if (vis) {
     99 		char            buf[BUFSZ];
    100 		if (mdef->mimic)
    101 			seemimic(mdef);
    102 		if (magr->mimic)
    103 			seemimic(magr);
    104 		(void) sprintf(buf, "%s %s", Monnam(magr),
    105 			       hit ? "hits" : "misses");
    106 		pline("%s %s.", buf, monnam(mdef));
    107 	} else {
    108 		boolean         far = (dist(magr->mx, magr->my) > 15);
    109 		if (far != far_noise || moves - noisetime > 10) {
    110 			far_noise = far;
    111 			noisetime = moves;
    112 			pline("You hear some noises%s.",
    113 			      far ? " in the distance" : "");
    114 		}
    115 	}
    116 	if (hit) {
    117 		if (magr->data->mlet == 'c' && !magr->cham) {
    118 			magr->mhpmax += 3;
    119 			if (vis)
    120 				pline("%s is turned to stone!", Monnam(mdef));
    121 			else if (mdef->mtame)
    122 				pline("You have a peculiarly sad feeling for a moment, then it passes.");
    123 			monstone(mdef);
    124 			hit = 2;
    125 		} else if ((mdef->mhp -= d(pa->damn, pa->damd)) < 1) {
    126 			magr->mhpmax += 1 + rn2(pd->mlevel + 1);
    127 			if (magr->mtame && magr->mhpmax > 8 * pa->mlevel) {
    128 				if (pa == &li_dog)
    129 					magr->data = pa = &dog;
    130 				else if (pa == &dog)
    131 					magr->data = pa = &la_dog;
    132 			}
    133 			if (vis)
    134 				pline("%s is killed!", Monnam(mdef));
    135 			else if (mdef->mtame)
    136 				pline("You have a sad feeling for a moment, then it passes.");
    137 			mondied(mdef);
    138 			hit = 2;
    139 		}
    140 	}
    141 	return (hit);
    142 }
    143 
    144 /* drop (perhaps) a cadaver and remove monster */
    145 void
    146 mondied(mdef)
    147 	struct monst   *mdef;
    148 {
    149 	const struct permonst *pd = mdef->data;
    150 	if (letter(pd->mlet) && rn2(3)) {
    151 		(void) mkobj_at(pd->mlet, mdef->mx, mdef->my);
    152 		if (cansee(mdef->mx, mdef->my)) {
    153 			unpmon(mdef);
    154 			atl(mdef->mx, mdef->my, fobj->olet);
    155 		}
    156 		stackobj(fobj);
    157 	}
    158 	mondead(mdef);
    159 }
    160 
    161 /* drop a rock and remove monster */
    162 void
    163 monstone(mdef)
    164 	struct monst   *mdef;
    165 {
    166 	if (strchr(mlarge, mdef->data->mlet))
    167 		mksobj_at(ENORMOUS_ROCK, mdef->mx, mdef->my);
    168 	else
    169 		mksobj_at(ROCK, mdef->mx, mdef->my);
    170 	if (cansee(mdef->mx, mdef->my)) {
    171 		unpmon(mdef);
    172 		atl(mdef->mx, mdef->my, fobj->olet);
    173 	}
    174 	mondead(mdef);
    175 }
    176 
    177 
    178 int
    179 fightm(mtmp)
    180 	struct monst   *mtmp;
    181 {
    182 	struct monst   *mon;
    183 	for (mon = fmon; mon; mon = mon->nmon)
    184 		if (mon != mtmp) {
    185 			if (DIST(mon->mx, mon->my, mtmp->mx, mtmp->my) < 3)
    186 				if (rn2(4))
    187 					return (hitmm(mtmp, mon));
    188 		}
    189 	return (-1);
    190 }
    191 
    192 /* u is hit by sth, but not a monster */
    193 int
    194 thitu(tlev, dam, name)
    195 	int tlev, dam;
    196 	const char           *name;
    197 {
    198 	char            buf[BUFSZ];
    199 	setan(name, buf);
    200 	if (u.uac + tlev <= rnd(20)) {
    201 		if (Blind)
    202 			pline("It misses.");
    203 		else
    204 			pline("You are almost hit by %s!", buf);
    205 		return (0);
    206 	} else {
    207 		if (Blind)
    208 			pline("You are hit!");
    209 		else
    210 			pline("You are hit by %s!", buf);
    211 		losehp(dam, name);
    212 		return (1);
    213 	}
    214 }
    215 
    216 char            mlarge[] = "bCDdegIlmnoPSsTUwY',&";
    217 
    218 boolean
    219 hmon(mon, obj, thrown)		/* return TRUE if mon still alive */
    220 	struct monst   *mon;
    221 	struct obj     *obj;
    222 	int thrown;
    223 {
    224 	int tmp;
    225 	boolean         hittxt = FALSE;
    226 
    227 	if (!obj) {
    228 		tmp = rnd(2);	/* attack with bare hands */
    229 		if (mon->data->mlet == 'c' && !uarmg) {
    230 			pline("You hit the cockatrice with your bare hands.");
    231 			pline("You turn to stone ...");
    232 			done_in_by(mon);
    233 		}
    234 	} else if (obj->olet == WEAPON_SYM || obj->otyp == PICK_AXE) {
    235 		if (obj == uwep && (obj->otyp > SPEAR || obj->otyp < BOOMERANG))
    236 			tmp = rnd(2);
    237 		else {
    238 			if (strchr(mlarge, mon->data->mlet)) {
    239 				tmp = rnd(objects[obj->otyp].wldam);
    240 				if (obj->otyp == TWO_HANDED_SWORD)
    241 					tmp += d(2, 6);
    242 				else if (obj->otyp == FLAIL)
    243 					tmp += rnd(4);
    244 			} else {
    245 				tmp = rnd(objects[obj->otyp].wsdam);
    246 			}
    247 			tmp += obj->spe;
    248 			if (!thrown && obj == uwep && obj->otyp == BOOMERANG
    249 			    && !rn2(3)) {
    250 				pline("As you hit %s, the boomerang breaks into splinters.",
    251 				      monnam(mon));
    252 				freeinv(obj);
    253 				setworn((struct obj *) 0, obj->owornmask);
    254 				obfree(obj, (struct obj *) 0);
    255 				obj = NULL;
    256 				tmp++;
    257 			}
    258 		}
    259 		if (mon->data->mlet == 'O' && obj != NULL &&
    260 		    obj->otyp == TWO_HANDED_SWORD &&
    261 		    !strcmp(ONAME(obj), "Orcrist"))
    262 			tmp += rnd(10);
    263 	} else
    264 		switch (obj->otyp) {
    265 		case HEAVY_IRON_BALL:
    266 			tmp = rnd(25);
    267 			break;
    268 		case EXPENSIVE_CAMERA:
    269 			pline("You succeed in destroying your camera. Congratulations!");
    270 			freeinv(obj);
    271 			if (obj->owornmask)
    272 				setworn((struct obj *) 0, obj->owornmask);
    273 			obfree(obj, (struct obj *) 0);
    274 			return (TRUE);
    275 		case DEAD_COCKATRICE:
    276 			pline("You hit %s with the cockatrice corpse.",
    277 			      monnam(mon));
    278 			if (mon->data->mlet == 'c') {
    279 				tmp = 1;
    280 				hittxt = TRUE;
    281 				break;
    282 			}
    283 			pline("%s is turned to stone!", Monnam(mon));
    284 			killed(mon);
    285 			return (FALSE);
    286 		case CLOVE_OF_GARLIC:	/* no effect against demons */
    287 			if (strchr(UNDEAD, mon->data->mlet))
    288 				mon->mflee = 1;
    289 			tmp = 1;
    290 			break;
    291 		default:
    292 			/* non-weapons can damage because of their weight */
    293 			/* (but not too much) */
    294 			tmp = obj->owt / 10;
    295 			if (tmp < 1)
    296 				tmp = 1;
    297 			else
    298 				tmp = rnd(tmp);
    299 			if (tmp > 6)
    300 				tmp = 6;
    301 		}
    302 
    303 	/****** NOTE: perhaps obj is undefined!! (if !thrown && BOOMERANG) */
    304 
    305 	tmp += u.udaminc + dbon();
    306 	if (u.uswallow) {
    307 		if ((tmp -= u.uswldtim) <= 0) {
    308 			pline("Your arms are no longer able to hit.");
    309 			return (TRUE);
    310 		}
    311 	}
    312 	if (tmp < 1)
    313 		tmp = 1;
    314 	mon->mhp -= tmp;
    315 	if (mon->mhp < 1) {
    316 		killed(mon);
    317 		return (FALSE);
    318 	}
    319 	if (mon->mtame && (!mon->mflee || mon->mfleetim)) {
    320 		mon->mflee = 1;	/* Rick Richardson */
    321 		mon->mfleetim += 10 * rnd(tmp);
    322 	}
    323 	if (!hittxt) {
    324 		if (thrown) {
    325 			/* this assumes that we cannot throw plural things */
    326 			if (obj == NULL)
    327 				panic("thrown non-object");
    328 			hit(xname(obj) /* or: objects[obj->otyp].oc_name */ ,
    329 			    mon, exclam(tmp));
    330 		} else if (Blind)
    331 			pline("You hit it.");
    332 		else
    333 			pline("You hit %s%s", monnam(mon), exclam(tmp));
    334 	}
    335 	if (u.umconf && !thrown) {
    336 		if (!Blind) {
    337 			pline("Your hands stop glowing blue.");
    338 			if (!mon->mfroz && !mon->msleep)
    339 				pline("%s appears confused.", Monnam(mon));
    340 		}
    341 		mon->mconf = 1;
    342 		u.umconf = 0;
    343 	}
    344 	return (TRUE);		/* mon still alive */
    345 }
    346 
    347 /* try to attack; return FALSE if monster evaded */
    348 /* u.dx and u.dy must be set */
    349 int
    350 attack(mtmp)
    351 	struct monst   *mtmp;
    352 {
    353 	schar           tmp;
    354 	boolean         malive = TRUE;
    355 	const struct permonst *mdat;
    356 	mdat = mtmp->data;
    357 
    358 	u_wipe_engr(3);		/* andrew@orca: prevent unlimited pick-axe
    359 				 * attacks */
    360 
    361 	if (mdat->mlet == 'L' && !mtmp->mfroz && !mtmp->msleep &&
    362 	    !mtmp->mconf && mtmp->mcansee && !rn2(7) &&
    363 	    (m_move(mtmp, 0) == 2 /* he died */ ||	/* he moved: */
    364 	     mtmp->mx != u.ux + u.dx || mtmp->my != u.uy + u.dy))
    365 		return (FALSE);
    366 
    367 	if (mtmp->mimic) {
    368 		if (!u.ustuck && !mtmp->mflee)
    369 			u.ustuck = mtmp;
    370 		switch (levl[u.ux + u.dx][u.uy + u.dy].scrsym) {
    371 		case '+':
    372 			pline("The door actually was a Mimic.");
    373 			break;
    374 		case '$':
    375 			pline("The chest was a Mimic!");
    376 			break;
    377 		default:
    378 			pline("Wait! That's a Mimic!");
    379 		}
    380 		wakeup(mtmp);	/* clears mtmp->mimic */
    381 		return (TRUE);
    382 	}
    383 	wakeup(mtmp);
    384 
    385 	if (mtmp->mhide && mtmp->mundetected) {
    386 		struct obj     *obj;
    387 
    388 		mtmp->mundetected = 0;
    389 		if ((obj = o_at(mtmp->mx, mtmp->my)) && !Blind)
    390 			pline("Wait! There's a %s hiding under %s!",
    391 			      mdat->mname, doname(obj));
    392 		return (TRUE);
    393 	}
    394 	tmp = u.uluck + u.ulevel + mdat->ac + abon();
    395 	if (uwep) {
    396 		if (uwep->olet == WEAPON_SYM || uwep->otyp == PICK_AXE)
    397 			tmp += uwep->spe;
    398 		if (uwep->otyp == TWO_HANDED_SWORD)
    399 			tmp -= 1;
    400 		else if (uwep->otyp == DAGGER)
    401 			tmp += 2;
    402 		else if (uwep->otyp == CRYSKNIFE)
    403 			tmp += 3;
    404 		else if (uwep->otyp == SPEAR &&
    405 			 strchr("XDne", mdat->mlet))
    406 			tmp += 2;
    407 	}
    408 	if (mtmp->msleep) {
    409 		mtmp->msleep = 0;
    410 		tmp += 2;
    411 	}
    412 	if (mtmp->mfroz) {
    413 		tmp += 4;
    414 		if (!rn2(10))
    415 			mtmp->mfroz = 0;
    416 	}
    417 	if (mtmp->mflee)
    418 		tmp += 2;
    419 	if (u.utrap)
    420 		tmp -= 3;
    421 
    422 	/* with a lot of luggage, your agility diminishes */
    423 	tmp -= (inv_weight() + 40) / 20;
    424 
    425 	if (tmp <= rnd(20) && !u.uswallow) {
    426 		if (Blind)
    427 			pline("You miss it.");
    428 		else
    429 			pline("You miss %s.", monnam(mtmp));
    430 	} else {
    431 		/* we hit the monster; be careful: it might die! */
    432 
    433 		if ((malive = hmon(mtmp, uwep, 0)) == TRUE) {
    434 			/* monster still alive */
    435 			if (!rn2(25) && mtmp->mhp < mtmp->mhpmax / 2) {
    436 				mtmp->mflee = 1;
    437 				if (!rn2(3))
    438 					mtmp->mfleetim = rnd(100);
    439 				if (u.ustuck == mtmp && !u.uswallow)
    440 					u.ustuck = 0;
    441 			}
    442 #ifndef NOWORM
    443 			if (mtmp->wormno)
    444 				cutworm(mtmp, u.ux + u.dx, u.uy + u.dy,
    445 					uwep ? uwep->otyp : 0);
    446 #endif	/* NOWORM */
    447 		}
    448 		if (mdat->mlet == 'a') {
    449 			if (rn2(2)) {
    450 				pline("You are splashed by the blob's acid!");
    451 				losehp_m(rnd(6), mtmp);
    452 				if (!rn2(30))
    453 					corrode_armor();
    454 			}
    455 			if (!rn2(6))
    456 				corrode_weapon();
    457 		}
    458 	}
    459 	if (malive && mdat->mlet == 'E' && canseemon(mtmp)
    460 	    && !mtmp->mcan && rn2(3)) {
    461 		if (mtmp->mcansee) {
    462 			pline("You are frozen by the floating eye's gaze!");
    463 			nomul((u.ulevel > 6 || rn2(4)) ? rn1(20, -21) : -200);
    464 		} else {
    465 			pline("The blinded floating eye cannot defend itself.");
    466 			if (!rn2(500))
    467 				if ((int) u.uluck > LUCKMIN)
    468 					u.uluck--;
    469 		}
    470 	}
    471 	return (TRUE);
    472 }
    473