games/hack/hack.fight.c

   1 /*      $NetBSD: hack.fight.c,v 1.12 2009/08/12 07:28:40 dholland 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@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 "hack.h"
  65 #include "extern.h"
  66
  67 static boolean  far_noise;
  68 static long     noisetime;
  69
  70 static void monstone(struct monst *);
  71
  72 /* hitmm returns 0 (miss), 1 (hit), or 2 (kill) */
  73 int
  74 hitmm(struct monst *magr, struct monst *mdef)
  75 {
  76         const struct permonst *pa = magr->data, *pd = mdef->data;
  77         int             didhit;
  78         schar           tmp;
  79         boolean         vis;
  80
  81         if (strchr("Eauy", pa->mlet))
  82                 return (0);
  83         if (magr->mfroz)
  84                 return (0);     /* riv05!a3 */
  85         tmp = pd->ac + pa->mlevel;
  86         if (mdef->mconf || mdef->mfroz || mdef->msleep) {
  87                 tmp += 4;
  88                 if (mdef->msleep)
  89                         mdef->msleep = 0;
  90         }
  91         didhit = (tmp > rnd(20));
  92         if (didhit)
  93                 mdef->msleep = 0;
  94         vis = (cansee(magr->mx, magr->my) && cansee(mdef->mx, mdef->my));
  95         if (vis) {
  96                 char            buf[BUFSZ];
  97                 if (mdef->mimic)
  98                         seemimic(mdef);
  99                 if (magr->mimic)
 100                         seemimic(magr);
 101                 (void) snprintf(buf, sizeof(buf), "%s %s", Monnam(magr),
 102                                didhit ? "hits" : "misses");
 103                 pline("%s %s.", buf, monnam(mdef));
 104         } else {
 105                 boolean         far = (dist(magr->mx, magr->my) > 15);
 106                 if (far != far_noise || moves - noisetime > 10) {
 107                         far_noise = far;
 108                         noisetime = moves;
 109                         pline("You hear some noises%s.",
 110                               far ? " in the distance" : "");
 111                 }
 112         }
 113         if (didhit) {
 114                 if (magr->data->mlet == 'c' && !magr->cham) {
 115                         magr->mhpmax += 3;
 116                         if (vis)
 117                                 pline("%s is turned to stone!", Monnam(mdef));
 118                         else if (mdef->mtame)
 119                                 pline("You have a peculiarly sad feeling for a moment, then it passes.");
 120                         monstone(mdef);
 121                         didhit = 2;
 122                 } else if ((mdef->mhp -= d(pa->damn, pa->damd)) < 1) {
 123                         magr->mhpmax += 1 + rn2(pd->mlevel + 1);
 124                         if (magr->mtame && magr->mhpmax > 8 * pa->mlevel) {
 125                                 if (pa == &li_dog)
 126                                         magr->data = pa = &dog;
 127                                 else if (pa == &dog)
 128                                         magr->data = pa = &la_dog;
 129                         }
 130                         if (vis)
 131                                 pline("%s is killed!", Monnam(mdef));
 132                         else if (mdef->mtame)
 133                                 pline("You have a sad feeling for a moment, then it passes.");
 134                         mondied(mdef);
 135                         didhit = 2;
 136                 }
 137         }
 138         return (didhit);
 139 }
 140
 141 /* drop (perhaps) a cadaver and remove monster */
 142 void
 143 mondied(struct monst *mdef)
 144 {
 145         const struct permonst *pd = mdef->data;
 146         if (letter(pd->mlet) && rn2(3)) {
 147                 (void) mkobj_at(pd->mlet, mdef->mx, mdef->my);
 148                 if (cansee(mdef->mx, mdef->my)) {
 149                         unpmon(mdef);
 150                         atl(mdef->mx, mdef->my, fobj->olet);
 151                 }
 152                 stackobj(fobj);
 153         }
 154         mondead(mdef);
 155 }
 156
 157 /* drop a rock and remove monster */
 158 static void
 159 monstone(struct monst *mdef)
 160 {
 161         if (strchr(mlarge, mdef->data->mlet))
 162                 mksobj_at(ENORMOUS_ROCK, mdef->mx, mdef->my);
 163         else
 164                 mksobj_at(ROCK, mdef->mx, mdef->my);
 165         if (cansee(mdef->mx, mdef->my)) {
 166                 unpmon(mdef);
 167                 atl(mdef->mx, mdef->my, fobj->olet);
 168         }
 169         mondead(mdef);
 170 }
 171
 172
 173 int
 174 fightm(struct monst *mtmp)
 175 {
 176         struct monst   *mon;
 177         for (mon = fmon; mon; mon = mon->nmon)
 178                 if (mon != mtmp) {
 179                         if (DIST(mon->mx, mon->my, mtmp->mx, mtmp->my) < 3)
 180                                 if (rn2(4))
 181                                         return (hitmm(mtmp, mon));
 182                 }
 183         return (-1);
 184 }
 185
 186 /* u is hit by sth, but not a monster */
 187 int
 188 thitu(int tlev, int dam, const char *name)
 189 {
 190         char            buf[BUFSZ];
 191
 192         setan(name, buf, sizeof(buf));
 193         if (u.uac + tlev <= rnd(20)) {
 194                 if (Blind)
 195                         pline("It misses.");
 196                 else
 197                         pline("You are almost hit by %s!", buf);
 198                 return (0);
 199         } else {
 200                 if (Blind)
 201                         pline("You are hit!");
 202                 else
 203                         pline("You are hit by %s!", buf);
 204                 losehp(dam, name);
 205                 return (1);
 206         }
 207 }
 208
 209 const char mlarge[] = "bCDdegIlmnoPSsTUwY',&";
 210
 211 /* return TRUE if mon still alive */
 212 boolean
 213 hmon(struct monst *mon, struct obj *obj, int thrown)
 214 {
 215         int tmp;
 216         boolean         hittxt = FALSE;
 217
 218         if (!obj) {
 219                 tmp = rnd(2);   /* attack with bare hands */
 220                 if (mon->data->mlet == 'c' && !uarmg) {
 221                         pline("You hit the cockatrice with your bare hands.");
 222                         pline("You turn to stone ...");
 223                         done_in_by(mon);
 224                 }
 225         } else if (obj->olet == WEAPON_SYM || obj->otyp == PICK_AXE) {
 226                 if (obj == uwep && (obj->otyp > SPEAR || obj->otyp < BOOMERANG))
 227                         tmp = rnd(2);
 228                 else {
 229                         if (strchr(mlarge, mon->data->mlet)) {
 230                                 tmp = rnd(objects[obj->otyp].wldam);
 231                                 if (obj->otyp == TWO_HANDED_SWORD)
 232                                         tmp += d(2, 6);
 233                                 else if (obj->otyp == FLAIL)
 234                                         tmp += rnd(4);
 235                         } else {
 236                                 tmp = rnd(objects[obj->otyp].wsdam);
 237                         }
 238                         tmp += obj->spe;
 239                         if (!thrown && obj == uwep && obj->otyp == BOOMERANG
 240                             && !rn2(3)) {
 241                                 pline("As you hit %s, the boomerang breaks into splinters.",
 242                                       monnam(mon));
 243                                 freeinv(obj);
 244                                 setworn((struct obj *) 0, obj->owornmask);
 245                                 obfree(obj, (struct obj *) 0);
 246                                 obj = NULL;
 247                                 tmp++;
 248                         }
 249                 }
 250                 if (mon->data->mlet == 'O' && obj != NULL &&
 251                     obj->otyp == TWO_HANDED_SWORD &&
 252                     !strcmp(ONAME(obj), "Orcrist"))
 253                         tmp += rnd(10);
 254         } else
 255                 switch (obj->otyp) {
 256                 case HEAVY_IRON_BALL:
 257                         tmp = rnd(25);
 258                         break;
 259                 case EXPENSIVE_CAMERA:
 260                         pline("You succeed in destroying your camera. Congratulations!");
 261                         freeinv(obj);
 262                         if (obj->owornmask)
 263                                 setworn((struct obj *) 0, obj->owornmask);
 264                         obfree(obj, (struct obj *) 0);
 265                         return (TRUE);
 266                 case DEAD_COCKATRICE:
 267                         pline("You hit %s with the cockatrice corpse.",
 268                               monnam(mon));
 269                         if (mon->data->mlet == 'c') {
 270                                 tmp = 1;
 271                                 hittxt = TRUE;
 272                                 break;
 273                         }
 274                         pline("%s is turned to stone!", Monnam(mon));
 275                         killed(mon);
 276                         return (FALSE);
 277                 case CLOVE_OF_GARLIC:   /* no effect against demons */
 278                         if (strchr(UNDEAD, mon->data->mlet))
 279                                 mon->mflee = 1;
 280                         tmp = 1;
 281                         break;
 282                 default:
 283                         /* non-weapons can damage because of their weight */
 284                         /* (but not too much) */
 285                         tmp = obj->owt / 10;
 286                         if (tmp < 1)
 287                                 tmp = 1;
 288                         else
 289                                 tmp = rnd(tmp);
 290                         if (tmp > 6)
 291                                 tmp = 6;
 292                 }
 293
 294         /****** NOTE: perhaps obj is undefined!! (if !thrown && BOOMERANG) */
 295
 296         tmp += u.udaminc + dbon();
 297         if (u.uswallow) {
 298                 if ((tmp -= u.uswldtim) <= 0) {
 299                         pline("Your arms are no longer able to hit.");
 300                         return (TRUE);
 301                 }
 302         }
 303         if (tmp < 1)
 304                 tmp = 1;
 305         mon->mhp -= tmp;
 306         if (mon->mhp < 1) {
 307                 killed(mon);
 308                 return (FALSE);
 309         }
 310         if (mon->mtame && (!mon->mflee || mon->mfleetim)) {
 311                 mon->mflee = 1; /* Rick Richardson */
 312                 mon->mfleetim += 10 * rnd(tmp);
 313         }
 314         if (!hittxt) {
 315                 if (thrown) {
 316                         /* this assumes that we cannot throw plural things */
 317                         if (obj == NULL)
 318                                 panic("thrown non-object");
 319                         hit(xname(obj) /* or: objects[obj->otyp].oc_name */ ,
 320                             mon, exclam(tmp));
 321                 } else if (Blind)
 322                         pline("You hit it.");
 323                 else
 324                         pline("You hit %s%s", monnam(mon), exclam(tmp));
 325         }
 326         if (u.umconf && !thrown) {
 327                 if (!Blind) {
 328                         pline("Your hands stop glowing blue.");
 329                         if (!mon->mfroz && !mon->msleep)
 330                                 pline("%s appears confused.", Monnam(mon));
 331                 }
 332                 mon->mconf = 1;
 333                 u.umconf = 0;
 334         }
 335         return (TRUE);          /* mon still alive */
 336 }
 337
 338 /* try to attack; return FALSE if monster evaded */
 339 /* u.dx and u.dy must be set */
 340 int
 341 attack(struct monst *mtmp)
 342 {
 343         schar           tmp;
 344         boolean         malive = TRUE;
 345         const struct permonst *mdat;
 346         mdat = mtmp->data;
 347
 348         u_wipe_engr(3);         /* andrew@orca: prevent unlimited pick-axe
 349                                  * attacks */
 350
 351         if (mdat->mlet == 'L' && !mtmp->mfroz && !mtmp->msleep &&
 352             !mtmp->mconf && mtmp->mcansee && !rn2(7) &&
 353             (m_move(mtmp, 0) == 2 /* he died */ ||      /* he moved: */
 354              mtmp->mx != u.ux + u.dx || mtmp->my != u.uy + u.dy))
 355                 return (FALSE);
 356
 357         if (mtmp->mimic) {
 358                 if (!u.ustuck && !mtmp->mflee)
 359                         u.ustuck = mtmp;
 360                 switch (levl[u.ux + u.dx][u.uy + u.dy].scrsym) {
 361                 case '+':
 362                         pline("The door actually was a Mimic.");
 363                         break;
 364                 case '$':
 365                         pline("The chest was a Mimic!");
 366                         break;
 367                 default:
 368                         pline("Wait! That's a Mimic!");
 369                 }
 370                 wakeup(mtmp);   /* clears mtmp->mimic */
 371                 return (TRUE);
 372         }
 373         wakeup(mtmp);
 374
 375         if (mtmp->mhide && mtmp->mundetected) {
 376                 struct obj     *obj;
 377
 378                 mtmp->mundetected = 0;
 379                 if ((obj = o_at(mtmp->mx, mtmp->my)) && !Blind)
 380                         pline("Wait! There's a %s hiding under %s!",
 381                               mdat->mname, doname(obj));
 382                 return (TRUE);
 383         }
 384         tmp = u.uluck + u.ulevel + mdat->ac + abon();
 385         if (uwep) {
 386                 if (uwep->olet == WEAPON_SYM || uwep->otyp == PICK_AXE)
 387                         tmp += uwep->spe;
 388                 if (uwep->otyp == TWO_HANDED_SWORD)
 389                         tmp -= 1;
 390                 else if (uwep->otyp == DAGGER)
 391                         tmp += 2;
 392                 else if (uwep->otyp == CRYSKNIFE)
 393                         tmp += 3;
 394                 else if (uwep->otyp == SPEAR &&
 395                          strchr("XDne", mdat->mlet))
 396                         tmp += 2;
 397         }
 398         if (mtmp->msleep) {
 399                 mtmp->msleep = 0;
 400                 tmp += 2;
 401         }
 402         if (mtmp->mfroz) {
 403                 tmp += 4;
 404                 if (!rn2(10))
 405                         mtmp->mfroz = 0;
 406         }
 407         if (mtmp->mflee)
 408                 tmp += 2;
 409         if (u.utrap)
 410                 tmp -= 3;
 411
 412         /* with a lot of luggage, your agility diminishes */
 413         tmp -= (inv_weight() + 40) / 20;
 414
 415         if (tmp <= rnd(20) && !u.uswallow) {
 416                 if (Blind)
 417                         pline("You miss it.");
 418                 else
 419                         pline("You miss %s.", monnam(mtmp));
 420         } else {
 421                 /* we hit the monster; be careful: it might die! */
 422
 423                 if ((malive = hmon(mtmp, uwep, 0)) == TRUE) {
 424                         /* monster still alive */
 425                         if (!rn2(25) && mtmp->mhp < mtmp->mhpmax / 2) {
 426                                 mtmp->mflee = 1;
 427                                 if (!rn2(3))
 428                                         mtmp->mfleetim = rnd(100);
 429                                 if (u.ustuck == mtmp && !u.uswallow)
 430                                         u.ustuck = 0;
 431                         }
 432 #ifndef NOWORM
 433                         if (mtmp->wormno)
 434                                 cutworm(mtmp, u.ux + u.dx, u.uy + u.dy,
 435                                         uwep ? uwep->otyp : 0);
 436 #endif  /* NOWORM */
 437                 }
 438                 if (mdat->mlet == 'a') {
 439                         if (rn2(2)) {
 440                                 pline("You are splashed by the blob's acid!");
 441                                 losehp_m(rnd(6), mtmp);
 442                                 if (!rn2(30))
 443                                         corrode_armor();
 444                         }
 445                         if (!rn2(6))
 446                                 corrode_weapon();
 447                 }
 448         }
 449         if (malive && mdat->mlet == 'E' && canseemon(mtmp)
 450             && !mtmp->mcan && rn2(3)) {
 451                 if (mtmp->mcansee) {
 452                         pline("You are frozen by the floating eye's gaze!");
 453                         nomul((u.ulevel > 6 || rn2(4)) ? rn1(20, -21) : -200);
 454                 } else {
 455                         pline("The blinded floating eye cannot defend itself.");
 456                         if (!rn2(500))
 457                                 if ((int) u.uluck > LUCKMIN)
 458                                         u.uluck--;
 459                 }
 460         }
 461         return (TRUE);
 462 }