games/hack/hack.fight.c

   1 /*      $NetBSD: hack.fight.c,v 1.11 2009/06/07 20:31:10 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 <sys/cdefs.h>
  65 #ifndef lint
  66 __RCSID("$NetBSD: hack.fight.c,v 1.11 2009/06/07 20:31:10 dholland 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 static void monstone(struct monst *);
  76
  77 /* hitmm returns 0 (miss), 1 (hit), or 2 (kill) */
  78 int
  79 hitmm(struct monst *magr, struct monst *mdef)
  80 {
  81         const struct permonst *pa = magr->data, *pd = mdef->data;
  82         int             didhit;
  83         schar           tmp;
  84         boolean         vis;
  85
  86         if (strchr("Eauy", pa->mlet))
  87                 return (0);
  88         if (magr->mfroz)
  89                 return (0);     /* riv05!a3 */
  90         tmp = pd->ac + pa->mlevel;
  91         if (mdef->mconf || mdef->mfroz || mdef->msleep) {
  92                 tmp += 4;
  93                 if (mdef->msleep)
  94                         mdef->msleep = 0;
  95         }
  96         didhit = (tmp > rnd(20));
  97         if (didhit)
  98                 mdef->msleep = 0;
  99         vis = (cansee(magr->mx, magr->my) && cansee(mdef->mx, mdef->my));
 100         if (vis) {
 101                 char            buf[BUFSZ];
 102                 if (mdef->mimic)
 103                         seemimic(mdef);
 104                 if (magr->mimic)
 105                         seemimic(magr);
 106                 (void) snprintf(buf, sizeof(buf), "%s %s", Monnam(magr),
 107                                didhit ? "hits" : "misses");
 108                 pline("%s %s.", buf, monnam(mdef));
 109         } else {
 110                 boolean         far = (dist(magr->mx, magr->my) > 15);
 111                 if (far != far_noise || moves - noisetime > 10) {
 112                         far_noise = far;
 113                         noisetime = moves;
 114                         pline("You hear some noises%s.",
 115                               far ? " in the distance" : "");
 116                 }
 117         }
 118         if (didhit) {
 119                 if (magr->data->mlet == 'c' && !magr->cham) {
 120                         magr->mhpmax += 3;
 121                         if (vis)
 122                                 pline("%s is turned to stone!", Monnam(mdef));
 123                         else if (mdef->mtame)
 124                                 pline("You have a peculiarly sad feeling for a moment, then it passes.");
 125                         monstone(mdef);
 126                         didhit = 2;
 127                 } else if ((mdef->mhp -= d(pa->damn, pa->damd)) < 1) {
 128                         magr->mhpmax += 1 + rn2(pd->mlevel + 1);
 129                         if (magr->mtame && magr->mhpmax > 8 * pa->mlevel) {
 130                                 if (pa == &li_dog)
 131                                         magr->data = pa = &dog;
 132                                 else if (pa == &dog)
 133                                         magr->data = pa = &la_dog;
 134                         }
 135                         if (vis)
 136                                 pline("%s is killed!", Monnam(mdef));
 137                         else if (mdef->mtame)
 138                                 pline("You have a sad feeling for a moment, then it passes.");
 139                         mondied(mdef);
 140                         didhit = 2;
 141                 }
 142         }
 143         return (didhit);
 144 }
 145
 146 /* drop (perhaps) a cadaver and remove monster */
 147 void
 148 mondied(struct monst *mdef)
 149 {
 150         const struct permonst *pd = mdef->data;
 151         if (letter(pd->mlet) && rn2(3)) {
 152                 (void) mkobj_at(pd->mlet, mdef->mx, mdef->my);
 153                 if (cansee(mdef->mx, mdef->my)) {
 154                         unpmon(mdef);
 155                         atl(mdef->mx, mdef->my, fobj->olet);
 156                 }
 157                 stackobj(fobj);
 158         }
 159         mondead(mdef);
 160 }
 161
 162 /* drop a rock and remove monster */
 163 static void
 164 monstone(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(struct monst *mtmp)
 180 {
 181         struct monst   *mon;
 182         for (mon = fmon; mon; mon = mon->nmon)
 183                 if (mon != mtmp) {
 184                         if (DIST(mon->mx, mon->my, mtmp->mx, mtmp->my) < 3)
 185                                 if (rn2(4))
 186                                         return (hitmm(mtmp, mon));
 187                 }
 188         return (-1);
 189 }
 190
 191 /* u is hit by sth, but not a monster */
 192 int
 193 thitu(int tlev, int dam, const char *name)
 194 {
 195         char            buf[BUFSZ];
 196
 197         setan(name, buf, sizeof(buf));
 198         if (u.uac + tlev <= rnd(20)) {
 199                 if (Blind)
 200                         pline("It misses.");
 201                 else
 202                         pline("You are almost hit by %s!", buf);
 203                 return (0);
 204         } else {
 205                 if (Blind)
 206                         pline("You are hit!");
 207                 else
 208                         pline("You are hit by %s!", buf);
 209                 losehp(dam, name);
 210                 return (1);
 211         }
 212 }
 213
 214 const char mlarge[] = "bCDdegIlmnoPSsTUwY',&";
 215
 216 /* return TRUE if mon still alive */
 217 boolean
 218 hmon(struct monst *mon, struct obj *obj, int thrown)
 219 {
 220         int tmp;
 221         boolean         hittxt = FALSE;
 222
 223         if (!obj) {
 224                 tmp = rnd(2);   /* attack with bare hands */
 225                 if (mon->data->mlet == 'c' && !uarmg) {
 226                         pline("You hit the cockatrice with your bare hands.");
 227                         pline("You turn to stone ...");
 228                         done_in_by(mon);
 229                 }
 230         } else if (obj->olet == WEAPON_SYM || obj->otyp == PICK_AXE) {
 231                 if (obj == uwep && (obj->otyp > SPEAR || obj->otyp < BOOMERANG))
 232                         tmp = rnd(2);
 233                 else {
 234                         if (strchr(mlarge, mon->data->mlet)) {
 235                                 tmp = rnd(objects[obj->otyp].wldam);
 236                                 if (obj->otyp == TWO_HANDED_SWORD)
 237                                         tmp += d(2, 6);
 238                                 else if (obj->otyp == FLAIL)
 239                                         tmp += rnd(4);
 240                         } else {
 241                                 tmp = rnd(objects[obj->otyp].wsdam);
 242                         }
 243                         tmp += obj->spe;
 244                         if (!thrown && obj == uwep && obj->otyp == BOOMERANG
 245                             && !rn2(3)) {
 246                                 pline("As you hit %s, the boomerang breaks into splinters.",
 247                                       monnam(mon));
 248                                 freeinv(obj);
 249                                 setworn((struct obj *) 0, obj->owornmask);
 250                                 obfree(obj, (struct obj *) 0);
 251                                 obj = NULL;
 252                                 tmp++;
 253                         }
 254                 }
 255                 if (mon->data->mlet == 'O' && obj != NULL &&
 256                     obj->otyp == TWO_HANDED_SWORD &&
 257                     !strcmp(ONAME(obj), "Orcrist"))
 258                         tmp += rnd(10);
 259         } else
 260                 switch (obj->otyp) {
 261                 case HEAVY_IRON_BALL:
 262                         tmp = rnd(25);
 263                         break;
 264                 case EXPENSIVE_CAMERA:
 265                         pline("You succeed in destroying your camera. Congratulations!");
 266                         freeinv(obj);
 267                         if (obj->owornmask)
 268                                 setworn((struct obj *) 0, obj->owornmask);
 269                         obfree(obj, (struct obj *) 0);
 270                         return (TRUE);
 271                 case DEAD_COCKATRICE:
 272                         pline("You hit %s with the cockatrice corpse.",
 273                               monnam(mon));
 274                         if (mon->data->mlet == 'c') {
 275                                 tmp = 1;
 276                                 hittxt = TRUE;
 277                                 break;
 278                         }
 279                         pline("%s is turned to stone!", Monnam(mon));
 280                         killed(mon);
 281                         return (FALSE);
 282                 case CLOVE_OF_GARLIC:   /* no effect against demons */
 283                         if (strchr(UNDEAD, mon->data->mlet))
 284                                 mon->mflee = 1;
 285                         tmp = 1;
 286                         break;
 287                 default:
 288                         /* non-weapons can damage because of their weight */
 289                         /* (but not too much) */
 290                         tmp = obj->owt / 10;
 291                         if (tmp < 1)
 292                                 tmp = 1;
 293                         else
 294                                 tmp = rnd(tmp);
 295                         if (tmp > 6)
 296                                 tmp = 6;
 297                 }
 298
 299         /****** NOTE: perhaps obj is undefined!! (if !thrown && BOOMERANG) */
 300
 301         tmp += u.udaminc + dbon();
 302         if (u.uswallow) {
 303                 if ((tmp -= u.uswldtim) <= 0) {
 304                         pline("Your arms are no longer able to hit.");
 305                         return (TRUE);
 306                 }
 307         }
 308         if (tmp < 1)
 309                 tmp = 1;
 310         mon->mhp -= tmp;
 311         if (mon->mhp < 1) {
 312                 killed(mon);
 313                 return (FALSE);
 314         }
 315         if (mon->mtame && (!mon->mflee || mon->mfleetim)) {
 316                 mon->mflee = 1; /* Rick Richardson */
 317                 mon->mfleetim += 10 * rnd(tmp);
 318         }
 319         if (!hittxt) {
 320                 if (thrown) {
 321                         /* this assumes that we cannot throw plural things */
 322                         if (obj == NULL)
 323                                 panic("thrown non-object");
 324                         hit(xname(obj) /* or: objects[obj->otyp].oc_name */ ,
 325                             mon, exclam(tmp));
 326                 } else if (Blind)
 327                         pline("You hit it.");
 328                 else
 329                         pline("You hit %s%s", monnam(mon), exclam(tmp));
 330         }
 331         if (u.umconf && !thrown) {
 332                 if (!Blind) {
 333                         pline("Your hands stop glowing blue.");
 334                         if (!mon->mfroz && !mon->msleep)
 335                                 pline("%s appears confused.", Monnam(mon));
 336                 }
 337                 mon->mconf = 1;
 338                 u.umconf = 0;
 339         }
 340         return (TRUE);          /* mon still alive */
 341 }
 342
 343 /* try to attack; return FALSE if monster evaded */
 344 /* u.dx and u.dy must be set */
 345 int
 346 attack(struct monst *mtmp)
 347 {
 348         schar           tmp;
 349         boolean         malive = TRUE;
 350         const struct permonst *mdat;
 351         mdat = mtmp->data;
 352
 353         u_wipe_engr(3);         /* andrew@orca: prevent unlimited pick-axe
 354                                  * attacks */
 355
 356         if (mdat->mlet == 'L' && !mtmp->mfroz && !mtmp->msleep &&
 357             !mtmp->mconf && mtmp->mcansee && !rn2(7) &&
 358             (m_move(mtmp, 0) == 2 /* he died */ ||      /* he moved: */
 359              mtmp->mx != u.ux + u.dx || mtmp->my != u.uy + u.dy))
 360                 return (FALSE);
 361
 362         if (mtmp->mimic) {
 363                 if (!u.ustuck && !mtmp->mflee)
 364                         u.ustuck = mtmp;
 365                 switch (levl[u.ux + u.dx][u.uy + u.dy].scrsym) {
 366                 case '+':
 367                         pline("The door actually was a Mimic.");
 368                         break;
 369                 case '$':
 370                         pline("The chest was a Mimic!");
 371                         break;
 372                 default:
 373                         pline("Wait! That's a Mimic!");
 374                 }
 375                 wakeup(mtmp);   /* clears mtmp->mimic */
 376                 return (TRUE);
 377         }
 378         wakeup(mtmp);
 379
 380         if (mtmp->mhide && mtmp->mundetected) {
 381                 struct obj     *obj;
 382
 383                 mtmp->mundetected = 0;
 384                 if ((obj = o_at(mtmp->mx, mtmp->my)) && !Blind)
 385                         pline("Wait! There's a %s hiding under %s!",
 386                               mdat->mname, doname(obj));
 387                 return (TRUE);
 388         }
 389         tmp = u.uluck + u.ulevel + mdat->ac + abon();
 390         if (uwep) {
 391                 if (uwep->olet == WEAPON_SYM || uwep->otyp == PICK_AXE)
 392                         tmp += uwep->spe;
 393                 if (uwep->otyp == TWO_HANDED_SWORD)
 394                         tmp -= 1;
 395                 else if (uwep->otyp == DAGGER)
 396                         tmp += 2;
 397                 else if (uwep->otyp == CRYSKNIFE)
 398                         tmp += 3;
 399                 else if (uwep->otyp == SPEAR &&
 400                          strchr("XDne", mdat->mlet))
 401                         tmp += 2;
 402         }
 403         if (mtmp->msleep) {
 404                 mtmp->msleep = 0;
 405                 tmp += 2;
 406         }
 407         if (mtmp->mfroz) {
 408                 tmp += 4;
 409                 if (!rn2(10))
 410                         mtmp->mfroz = 0;
 411         }
 412         if (mtmp->mflee)
 413                 tmp += 2;
 414         if (u.utrap)
 415                 tmp -= 3;
 416
 417         /* with a lot of luggage, your agility diminishes */
 418         tmp -= (inv_weight() + 40) / 20;
 419
 420         if (tmp <= rnd(20) && !u.uswallow) {
 421                 if (Blind)
 422                         pline("You miss it.");
 423                 else
 424                         pline("You miss %s.", monnam(mtmp));
 425         } else {
 426                 /* we hit the monster; be careful: it might die! */
 427
 428                 if ((malive = hmon(mtmp, uwep, 0)) == TRUE) {
 429                         /* monster still alive */
 430                         if (!rn2(25) && mtmp->mhp < mtmp->mhpmax / 2) {
 431                                 mtmp->mflee = 1;
 432                                 if (!rn2(3))
 433                                         mtmp->mfleetim = rnd(100);
 434                                 if (u.ustuck == mtmp && !u.uswallow)
 435                                         u.ustuck = 0;
 436                         }
 437 #ifndef NOWORM
 438                         if (mtmp->wormno)
 439                                 cutworm(mtmp, u.ux + u.dx, u.uy + u.dy,
 440                                         uwep ? uwep->otyp : 0);
 441 #endif  /* NOWORM */
 442                 }
 443                 if (mdat->mlet == 'a') {
 444                         if (rn2(2)) {
 445                                 pline("You are splashed by the blob's acid!");
 446                                 losehp_m(rnd(6), mtmp);
 447                                 if (!rn2(30))
 448                                         corrode_armor();
 449                         }
 450                         if (!rn2(6))
 451                                 corrode_weapon();
 452                 }
 453         }
 454         if (malive && mdat->mlet == 'E' && canseemon(mtmp)
 455             && !mtmp->mcan && rn2(3)) {
 456                 if (mtmp->mcansee) {
 457                         pline("You are frozen by the floating eye's gaze!");
 458                         nomul((u.ulevel > 6 || rn2(4)) ? rn1(20, -21) : -200);
 459                 } else {
 460                         pline("The blinded floating eye cannot defend itself.");
 461                         if (!rn2(500))
 462                                 if ((int) u.uluck > LUCKMIN)
 463                                         u.uluck--;
 464                 }
 465         }
 466         return (TRUE);
 467 }