games/hack/hack.do.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.do.c - version 1.0.3 */
   3 /* $FreeBSD: src/games/hack/hack.do.c,v 1.4 1999/11/16 10:26:36 marcel Exp $ */
   4 /* $DragonFly: src/games/hack/hack.do.c,v 1.5 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 /* Contains code for 'd', 'D' (drop), '>', '<' (up, down) and 't' (throw) */
   7
   8 #include "hack.h"
   9
  10 extern struct monst youmonst;
  11
  12 static int drop(struct obj *);
  13 static void dropy(struct obj *);
  14
  15 int
  16 dodrop(void)
  17 {
  18         return (drop(getobj("0$#", "drop")));
  19 }
  20
  21 static int
  22 drop(struct obj *obj)
  23 {
  24         if (!obj)
  25                 return (0);
  26         if (obj->olet == '$') {         /* pseudo object */
  27                 long amount = OGOLD(obj);
  28
  29                 if (amount == 0)
  30                         pline("You didn't drop any gold pieces.");
  31                 else {
  32                         mkgold(amount, u.ux, u.uy);
  33                         pline("You dropped %ld gold piece%s.",
  34                               amount, plur(amount));
  35                         if (Invisible)
  36                                 newsym(u.ux, u.uy);
  37                 }
  38                 free(obj);
  39                 return (1);
  40         }
  41         if (obj->owornmask & (W_ARMOR | W_RING)) {
  42                 pline("You cannot drop something you are wearing.");
  43                 return (0);
  44         }
  45         if (obj == uwep) {
  46                 if (uwep->cursed) {
  47                         pline("Your weapon is welded to your hand!");
  48                         return (0);
  49                 }
  50                 setuwep(NULL);
  51         }
  52         pline("You dropped %s.", doname(obj));
  53         dropx(obj);
  54         return (1);
  55 }
  56
  57 /* Called in several places - should not produce texts */
  58 void
  59 dropx(struct obj *obj)
  60 {
  61         freeinv(obj);
  62         dropy(obj);
  63 }
  64
  65 static void
  66 dropy(struct obj *obj)
  67 {
  68         if (obj->otyp == CRYSKNIFE)
  69                 obj->otyp = WORM_TOOTH;
  70         obj->ox = u.ux;
  71         obj->oy = u.uy;
  72         obj->nobj = fobj;
  73         fobj = obj;
  74         if (Invisible)
  75                 newsym(u.ux, u.uy);
  76         subfrombill(obj);
  77         stackobj(obj);
  78 }
  79
  80 /* drop several things */
  81 int
  82 doddrop(void)
  83 {
  84         return (ggetobj("drop", drop, 0));
  85 }
  86
  87 int
  88 dodown(void)
  89 {
  90         if (u.ux != xdnstair || u.uy != ydnstair) {
  91                 pline("You can't go down here.");
  92                 return (0);
  93         }
  94         if (u.ustuck) {
  95                 pline("You are being held, and cannot go down.");
  96                 return (1);
  97         }
  98         if (Levitation) {
  99                 pline("You're floating high above the stairs.");
 100                 return (0);
 101         }
 102
 103         goto_level(dlevel + 1, TRUE);
 104         return (1);
 105 }
 106
 107 int
 108 doup(void)
 109 {
 110         if (u.ux != xupstair || u.uy != yupstair) {
 111                 pline("You can't go up here.");
 112                 return (0);
 113         }
 114         if (u.ustuck) {
 115                 pline("You are being held, and cannot go up.");
 116                 return (1);
 117         }
 118         if (!Levitation && inv_weight() + 5 > 0) {
 119                 pline("Your load is too heavy to climb the stairs.");
 120                 return (1);
 121         }
 122
 123         goto_level(dlevel - 1, TRUE);
 124         return (1);
 125 }
 126
 127 void
 128 goto_level(int newlevel, boolean at_stairs)
 129 {
 130         int fd;
 131         boolean up = (newlevel < dlevel);
 132
 133         if (newlevel <= 0)              /* in fact < 0 is impossible */
 134                 done("escaped");
 135         if (newlevel > MAXLEVEL)        /* strange ... */
 136                 newlevel = MAXLEVEL;
 137         if (newlevel == dlevel)         /* this can happen */
 138                 return;
 139
 140         glo(dlevel);
 141         fd = creat(lock, FMASK);
 142         if (fd < 0) {
 143                 /*
 144                  * This is not quite impossible: e.g., we may have
 145                  * exceeded our quota. If that is the case then we
 146                  * cannot leave this level, and cannot save either.
 147                  * Another possibility is that the directory was not
 148                  * writable.
 149                  */
 150                 pline("A mysterious force prevents you from going %s.",
 151                       up ? "up" : "down");
 152                 return;
 153         }
 154
 155         if (Punished)
 156                 unplacebc();
 157         u.utrap = 0;            /* needed in level_tele */
 158         u.ustuck = 0;           /* idem */
 159         keepdogs();
 160         seeoff(1);
 161         if (u.uswallow)         /* idem */
 162                 u.uswldtim = u.uswallow = 0;
 163         flags.nscrinh = 1;
 164         u.ux = FAR;             /* hack */
 165         inshop();               /* probably was a trapdoor */
 166
 167         savelev(fd, dlevel);
 168         close(fd);
 169
 170         dlevel = newlevel;
 171         if (maxdlevel < dlevel)
 172                 maxdlevel = dlevel;
 173         glo(dlevel);
 174
 175         if (!level_exists[dlevel])
 176                 mklev();
 177         else {
 178                 if ((fd = open(lock, O_RDONLY)) < 0) {
 179                         pline("Cannot open %s .", lock);
 180                         pline("Probably someone removed it.");
 181                         done("tricked");
 182                 }
 183                 getlev(fd, hackpid, dlevel);
 184                 close(fd);
 185         }
 186
 187         if (at_stairs) {
 188                 if (up) {
 189                         u.ux = xdnstair;
 190                         u.uy = ydnstair;
 191                         if (!u.ux) {    /* entering a maze from below? */
 192                                 u.ux = xupstair; /* this will confuse the player! */
 193                                 u.uy = yupstair;
 194                         }
 195                         if (Punished && !Levitation) {
 196                                 pline("With great effort you climb the stairs.");
 197                                 placebc(1);
 198                         }
 199                 } else {
 200                         u.ux = xupstair;
 201                         u.uy = yupstair;
 202                         if (inv_weight() + 5 > 0 || Punished) {
 203                                 pline("You fall down the stairs.");     /* %% */
 204                                 losehp(rnd(3), "fall");
 205                                 if (Punished) {
 206                                         if (uwep != uball && rn2(3)) {
 207                                                 pline("... and are hit by the iron ball.");
 208                                                 losehp(rnd(20), "iron ball");
 209                                         }
 210                                         placebc(1);
 211                                 }
 212                                 selftouch("Falling, you");
 213                         }
 214                 }
 215                 {
 216                         struct monst *mtmp = m_at(u.ux, u.uy);
 217                         if (mtmp)
 218                                 mnexto(mtmp);
 219                 }
 220         } else {                /* trapdoor or level_tele */
 221                 do {
 222                         u.ux = rnd(COLNO - 1);
 223                         u.uy = rn2(ROWNO);
 224                 } while (levl[u.ux][u.uy].typ != ROOM ||
 225                          m_at(u.ux, u.uy));
 226                 if (Punished) {
 227                         if (uwep != uball && !up /* %% */ && rn2(5)) {
 228                                 pline("The iron ball falls on your head.");
 229                                 losehp(rnd(25), "iron ball");
 230                         }
 231                         placebc(1);
 232                 }
 233                 selftouch("Falling, you");
 234         }
 235         inshop();
 236         initrack();
 237
 238         losedogs();
 239         {
 240                 struct monst *mtmp;
 241                 if ((mtmp = m_at(u.ux, u.uy)))          /* riv05!a3 */
 242                         mnexto(mtmp);
 243         }
 244         flags.nscrinh = 0;
 245         setsee();
 246         seeobjs();              /* make old cadavers disappear - riv05!a3 */
 247         docrt();
 248         pickup(1);
 249         read_engr_at(u.ux, u.uy);
 250 }
 251
 252 int
 253 donull(void)
 254 {
 255         return (1);             /* Do nothing, but let other things happen */
 256 }
 257
 258 int
 259 dopray(void)
 260 {
 261         nomovemsg = "You finished your prayer.";
 262         nomul(-3);
 263         return (1);
 264 }
 265
 266 int
 267 dothrow(void)
 268 {
 269         struct obj *obj;
 270         struct monst *mon;
 271         int tmp;
 272
 273         obj = getobj("#)", "throw");    /* it is also possible to throw food */
 274                                         /* (or jewels, or iron balls ... ) */
 275         if (!obj || !getdir(1))         /* ask "in what direction?" */
 276                 return (0);
 277         if (obj->owornmask & (W_ARMOR | W_RING)) {
 278                 pline("You can't throw something you are wearing.");
 279                 return (0);
 280         }
 281
 282         u_wipe_engr(2);
 283
 284         if (obj == uwep) {
 285                 if (obj->cursed) {
 286                         pline("Your weapon is welded to your hand.");
 287                         return (1);
 288                 }
 289                 if (obj->quan > 1)
 290                         setuwep(splitobj(obj, 1));
 291                 else
 292                         setuwep(NULL);
 293         } else if (obj->quan > 1)
 294                 splitobj(obj, 1);
 295         freeinv(obj);
 296         if (u.uswallow) {
 297                 mon = u.ustuck;
 298                 bhitpos.x = mon->mx;
 299                 bhitpos.y = mon->my;
 300         } else if (u.dz) {
 301                 if (u.dz < 0) {
 302                         pline("%s hits the ceiling, then falls back on top of your head.",
 303                             Doname(obj));       /* note: obj->quan == 1 */
 304                         if (obj->olet == POTION_SYM)
 305                                 potionhit(&youmonst, obj);
 306                         else {
 307                                 if (uarmh)
 308                                         pline("Fortunately, you are wearing a helmet!");
 309                                 losehp(uarmh ? 1 : rnd((int)(obj->owt)),
 310                                     "falling object");
 311                                 dropy(obj);
 312                         }
 313                 } else {
 314                         pline("%s hits the floor.", Doname(obj));
 315                         if (obj->otyp == EXPENSIVE_CAMERA) {
 316                                 pline("It is shattered in a thousand pieces!");
 317                                 obfree(obj, NULL);
 318                         } else if (obj->otyp == EGG) {
 319                                 pline("\"Splash!\"");
 320                                 obfree(obj, NULL);
 321                         } else if (obj->olet == POTION_SYM) {
 322                                 pline("The flask breaks, and you smell a peculiar odor ...");
 323                                 potionbreathe(obj);
 324                                 obfree(obj, NULL);
 325                         } else
 326                                 dropy(obj);
 327                 }
 328                 return (1);
 329         } else if (obj->otyp == BOOMERANG) {
 330                 mon = boomhit(u.dx, u.dy);
 331                 if (mon == &youmonst) {         /* the thing was caught */
 332                         addinv(obj);
 333                         return (1);
 334                 }
 335         } else {
 336                 if (obj->otyp == PICK_AXE && shkcatch(obj))
 337                         return (1);
 338
 339                 mon = bhit(u.dx, u.dy, (obj->otyp == ICE_BOX) ? 1 :
 340                     (!Punished || obj != uball) ? 8 : !u.ustuck ? 5 : 1,
 341                     obj->olet, (void (*)(struct monst *, struct obj *)) 0,
 342                     (bool (*)(struct obj *, struct obj *)) 0, obj);
 343         }
 344         if (mon) {
 345                 /* awake monster if sleeping */
 346                 wakeup(mon);
 347
 348                 if (obj->olet == WEAPON_SYM) {
 349                         tmp = -1 + u.ulevel + mon->data->ac + abon();
 350                         if (obj->otyp < ROCK) {
 351                                 if (!uwep ||
 352                                     uwep->otyp != obj->otyp + (BOW - ARROW))
 353                                         tmp -= 4;
 354                                 else {
 355                                         tmp += uwep->spe;
 356                                 }
 357                         } else if (obj->otyp == BOOMERANG)
 358                                 tmp += 4;
 359                         tmp += obj->spe;
 360                         if (u.uswallow || tmp >= rnd(20)) {
 361                                 if (hmon(mon, obj, 1) == TRUE) {
 362                                         /* mon still alive */
 363 #ifndef NOWORM
 364                                         cutworm(mon, bhitpos.x, bhitpos.y, obj->otyp);
 365 #endif /* NOWORM */
 366                                 } else
 367                                         mon = 0;
 368                                 /* weapons thrown disappear sometimes */
 369                                 if (obj->otyp < BOOMERANG && rn2(3)) {
 370                                         /* check bill; free */
 371                                         obfree(obj, NULL);
 372                                         return (1);
 373                                 }
 374                         } else
 375                                 miss(objects[obj->otyp].oc_name, mon);
 376                 } else if (obj->otyp == HEAVY_IRON_BALL) {
 377                         tmp = -1 + u.ulevel + mon->data->ac + abon();
 378                         if (!Punished || obj != uball)
 379                                 tmp += 2;
 380                         if (u.utrap)
 381                                 tmp -= 2;
 382                         if (u.uswallow || tmp >= rnd(20)) {
 383                                 if (hmon(mon, obj, 1) == FALSE)
 384                                         mon = 0;        /* he died */
 385                         } else
 386                                 miss("iron ball", mon);
 387                 } else if (obj->olet == POTION_SYM && u.ulevel > rn2(15)) {
 388                         potionhit(mon, obj);
 389                         return (1);
 390                 } else {
 391                         if (cansee(bhitpos.x, bhitpos.y))
 392                                 pline("You miss %s.", monnam(mon));
 393                         else
 394                                 pline("You miss it.");
 395                         if (obj->olet == FOOD_SYM && mon->data->mlet == 'd')
 396                                 if (tamedog(mon, obj))
 397                                         return (1);
 398                         if (obj->olet == GEM_SYM && mon->data->mlet == 'u' &&
 399                             !mon->mtame) {
 400                                 if (obj->dknown && objects[obj->otyp].oc_name_known) {
 401                                         if (objects[obj->otyp].g_val > 0) {
 402                                                 u.uluck += 5;
 403                                                 goto valuable;
 404                                         } else
 405                                                 pline("%s is not interested in your junk.",
 406                                                     Monnam(mon));
 407                                 } else { /* value unknown to @ */
 408                                         u.uluck++;
 409 valuable:
 410                                         if (u.uluck > LUCKMAX)  /* dan@ut-ngp */
 411                                                 u.uluck = LUCKMAX;
 412                                         pline("%s graciously accepts your gift.",
 413                                             Monnam(mon));
 414                                         mpickobj(mon, obj);
 415                                         rloc(mon);
 416                                         return (1);
 417                                 }
 418                         }
 419                 }
 420         }
 421         /* the code following might become part of dropy() */
 422         if (obj->otyp == CRYSKNIFE)
 423                 obj->otyp = WORM_TOOTH;
 424         obj->ox = bhitpos.x;
 425         obj->oy = bhitpos.y;
 426         obj->nobj = fobj;
 427         fobj = obj;
 428         /* prevent him from throwing articles to the exit and escaping */
 429         /* subfrombill(obj); */
 430         stackobj(obj);
 431         if (Punished && obj == uball &&
 432             (bhitpos.x != u.ux || bhitpos.y != u.uy)) {
 433                 freeobj(uchain);
 434                 unpobj(uchain);
 435                 if (u.utrap) {
 436                         if (u.utraptype == TT_PIT)
 437                                 pline("The ball pulls you out of the pit!");
 438                         else {
 439                                 long side = rn2(3) ? LEFT_SIDE : RIGHT_SIDE;
 440                                 pline("The ball pulls you out of the bear trap.");
 441                                 pline("Your %s leg is severely damaged.",
 442                                     (side == LEFT_SIDE) ? "left" : "right");
 443                                 set_wounded_legs(side, 500 + rn2(1000));
 444                                 losehp(2, "thrown ball");
 445                         }
 446                         u.utrap = 0;
 447                 }
 448                 unsee();
 449                 uchain->nobj = fobj;
 450                 fobj = uchain;
 451                 u.ux = uchain->ox = bhitpos.x - u.dx;
 452                 u.uy = uchain->oy = bhitpos.y - u.dy;
 453                 setsee();
 454                 inshop();
 455         }
 456         if (cansee(bhitpos.x, bhitpos.y))
 457                 prl(bhitpos.x, bhitpos.y);
 458         return (1);
 459 }
 460
 461 /* split obj so that it gets size num */
 462 /* remainder is put in the object structure delivered by this call */
 463 struct obj *
 464 splitobj(struct obj *obj, int num)
 465 {
 466         struct obj *otmp;
 467
 468         otmp = newobj(0);
 469         *otmp = *obj;           /* copies whole structure */
 470         otmp->o_id = flags.ident++;
 471         otmp->onamelth = 0;
 472         obj->quan = num;
 473         obj->owt = weight(obj);
 474         otmp->quan -= num;
 475         otmp->owt = weight(otmp);       /* -= obj->owt ? */
 476         obj->nobj = otmp;
 477         if (obj->unpaid)
 478                 splitbill(obj, otmp);
 479         return (otmp);
 480 }
 481
 482 void
 483 more_experienced(int exp, int rexp)
 484 {
 485         u.uexp += exp;
 486         u.urexp += 4 * exp + rexp;
 487         if (exp)
 488                 flags.botl = 1;
 489         if (u.urexp >= ((pl_character[0] == 'W') ? 1000 : 2000))
 490                 flags.beginner = 0;
 491 }
 492
 493 void
 494 set_wounded_legs(long side, int timex)
 495 {
 496         if (!Wounded_legs || (Wounded_legs & TIMEOUT))
 497                 Wounded_legs |= side + timex;
 498         else
 499                 Wounded_legs |= side;
 500 }
 501
 502 void
 503 heal_legs(void)
 504 {
 505         if (Wounded_legs) {
 506                 if ((Wounded_legs & BOTH_SIDES) == BOTH_SIDES)
 507                         pline("Your legs feel somewhat better.");
 508                 else
 509                         pline("Your leg feels somewhat better.");
 510                 Wounded_legs = 0;
 511         }
 512 }