games/hack/hack.read.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.read.c - version 1.0.3 */
   3 /* $FreeBSD: src/games/hack/hack.read.c,v 1.6 1999/11/16 10:26:37 marcel Exp $ */
   4 /* $DragonFly: src/games/hack/hack.read.c,v 1.4 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 #include "hack.h"
   7
   8 static bool monstersym(char);
   9
  10 int
  11 doread(void)
  12 {
  13         struct obj *scroll;
  14         boolean confused = (Confusion != 0);
  15         boolean known = FALSE;
  16
  17         scroll = getobj("?", "read");
  18         if (!scroll)
  19                 return (0);
  20         if (!scroll->dknown && Blind) {
  21                 pline("Being blind, you cannot read the formula on the scroll.");
  22                 return (0);
  23         }
  24         if (Blind)
  25                 pline("As you pronounce the formula on it, the scroll disappears.");
  26         else
  27                 pline("As you read the scroll, it disappears.");
  28         if (confused)
  29                 pline("Being confused, you mispronounce the magic words ... ");
  30
  31         switch (scroll->otyp) {
  32 #ifdef MAIL
  33         case SCR_MAIL:
  34                 readmail(/* scroll */);
  35                 break;
  36 #endif /* MAIL */
  37         case SCR_ENCHANT_ARMOR:
  38                 {
  39                         struct obj *otmp = some_armor();
  40                         if (!otmp) {
  41                                 strange_feeling(scroll, "Your skin glows then fades.");
  42                                 return (1);
  43                         }
  44                         if (confused) {
  45                                 pline("Your %s glows silver for a moment.",
  46                                     objects[otmp->otyp].oc_name);
  47                                 otmp->rustfree = 1;
  48                                 break;
  49                         }
  50                         if (otmp->spe > 3 && rn2(otmp->spe)) {
  51                                 pline("Your %s glows violently green for a while, then evaporates.",
  52                                     objects[otmp->otyp].oc_name);
  53                                 useup(otmp);
  54                                 break;
  55                         }
  56                         pline("Your %s glows green for a moment.",
  57                             objects[otmp->otyp].oc_name);
  58                         otmp->cursed = 0;
  59                         otmp->spe++;
  60                         break;
  61                 }
  62         case SCR_DESTROY_ARMOR:
  63                 if (confused) {
  64                         struct obj *otmp = some_armor();
  65                         if (!otmp) {
  66                                 strange_feeling(scroll, "Your bones itch.");
  67                                 return (1);
  68                         }
  69                         pline("Your %s glows purple for a moment.",
  70                               objects[otmp->otyp].oc_name);
  71                         otmp->rustfree = 0;
  72                         break;
  73                 }
  74                 if (uarm) {
  75                         pline("Your armor turns to dust and falls to the floor!");
  76                         useup(uarm);
  77                 } else if (uarmh) {
  78                         pline("Your helmet turns to dust and is blown away!");
  79                         useup(uarmh);
  80                 } else if (uarmg) {
  81                         pline("Your gloves vanish!");
  82                         useup(uarmg);
  83                         selftouch("You");
  84                 } else {
  85                         strange_feeling(scroll, "Your skin itches.");
  86                         return (1);
  87                 }
  88                 break;
  89         case SCR_CONFUSE_MONSTER:
  90                 if (confused) {
  91                         pline("Your hands begin to glow purple.");
  92                         Confusion += rnd(100);
  93                 } else {
  94                         pline("Your hands begin to glow blue.");
  95                         u.umconf = 1;
  96                 }
  97                 break;
  98         case SCR_SCARE_MONSTER:
  99                 {
 100                         int ct = 0;
 101                         struct monst *mtmp;
 102
 103                         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
 104                                 if (cansee(mtmp->mx, mtmp->my)) {
 105                                         if (confused)
 106                                                 mtmp->mflee = mtmp->mfroz =
 107                                                     mtmp->msleep = 0;
 108                                         else
 109                                                 mtmp->mflee = 1;
 110                                         ct++;
 111                                 }
 112                         if (!ct) {
 113                                 if (confused)
 114                                         pline("You hear sad wailing in the distance.");
 115                                 else
 116                                         pline("You hear maniacal laughter in the distance.");
 117                         }
 118                         break;
 119                 }
 120         case SCR_BLANK_PAPER:
 121                 if (confused)
 122                         pline("You see strange patterns on this scroll.");
 123                 else
 124                         pline("This scroll seems to be blank.");
 125                 break;
 126         case SCR_REMOVE_CURSE:
 127                 {
 128                         struct obj *obj;
 129                         if (confused)
 130                                 pline("You feel like you need some help.");
 131                         else
 132                                 pline("You feel like someone is helping you.");
 133                         for (obj = invent; obj; obj = obj->nobj)
 134                                 if (obj->owornmask)
 135                                         obj->cursed = confused;
 136                         if (Punished && !confused) {
 137                                 Punished = 0;
 138                                 freeobj(uchain);
 139                                 unpobj(uchain);
 140                                 free(uchain);
 141                                 uball->spe = 0;
 142                                 uball->owornmask &= ~W_BALL;
 143                                 uchain = uball = NULL;
 144                         }
 145                         break;
 146                 }
 147         case SCR_CREATE_MONSTER:
 148                 {
 149                         int cnt = 1;
 150
 151                         if (!rn2(73))
 152                                 cnt += rnd(4);
 153                         if (confused)
 154                                 cnt += 12;
 155                         while (cnt--)
 156                                 makemon(confused ? PM_ACID_BLOB :
 157                                     NULL, u.ux, u.uy);
 158                         break;
 159                 }
 160         case SCR_ENCHANT_WEAPON:
 161                 if (uwep && confused) {
 162                         pline("Your %s glows silver for a moment.",
 163                               objects[uwep->otyp].oc_name);
 164                         uwep->rustfree = 1;
 165                 } else if (!chwepon(scroll, 1))         /* tests for !uwep */
 166                         return (1);
 167                 break;
 168         case SCR_DAMAGE_WEAPON:
 169                 if (uwep && confused) {
 170                         pline("Your %s glows purple for a moment.",
 171                               objects[uwep->otyp].oc_name);
 172                         uwep->rustfree = 0;
 173                 } else if (!chwepon(scroll, -1))        /* tests for !uwep */
 174                         return (1);
 175                 break;
 176         case SCR_TAMING:
 177                 {
 178                         int i, j;
 179                         int bd = confused ? 5 : 1;
 180                         struct monst *mtmp;
 181
 182                         for (i = -bd; i <= bd; i++)
 183                                 for (j = -bd; j <= bd; j++)
 184                                         if ((mtmp = m_at(u.ux + i, u.uy + j)))
 185                                                 tamedog(mtmp, NULL);
 186                         break;
 187                 }
 188         case SCR_GENOCIDE:
 189                 {
 190                         char buf[BUFSZ];
 191                         struct monst *mtmp, *mtmp2;
 192
 193                         pline("You have found a scroll of genocide!");
 194                         known = TRUE;
 195                         if (confused)
 196                                 *buf = u.usym;
 197                         else
 198                                 do {
 199                                 pline("What monster do you want to genocide (Type the letter)? ");
 200                                 getlin(buf);
 201                         } while (strlen(buf) != 1 || !monstersym(*buf));
 202                         if (!strchr(fut_geno, *buf))
 203                                 charcat(fut_geno, *buf);
 204                         if (!strchr(genocided, *buf))
 205                                 charcat(genocided, *buf);
 206                         else {
 207                                 pline("Such monsters do not exist in this world.");
 208                                 break;
 209                         }
 210                         for (mtmp = fmon; mtmp; mtmp = mtmp2) {
 211                                 mtmp2 = mtmp->nmon;
 212                                 if (mtmp->data->mlet == *buf)
 213                                         mondead(mtmp);
 214                         }
 215                         pline("Wiped out all %c's.", *buf);
 216                         if (*buf == u.usym) {
 217                                 killer = "scroll of genocide";
 218                                 u.uhp = -1;
 219                         }
 220                         break;
 221                 }
 222         case SCR_LIGHT:
 223                 if (!Blind)
 224                         known = TRUE;
 225                 litroom(!confused);
 226                 break;
 227         case SCR_TELEPORTATION:
 228                 if (confused)
 229                         level_tele();
 230                 else {
 231 #ifdef QUEST
 232                         int oux = u.ux, ouy = u.uy;
 233                         tele();
 234                         if (dist(oux, ouy) > 100)
 235                                 known = TRUE;
 236 #else /* QUEST */
 237                         int uroom = inroom(u.ux, u.uy);
 238                         tele();
 239                         if (uroom != inroom(u.ux, u.uy))
 240                                 known = TRUE;
 241 #endif /* QUEST */
 242                 }
 243                 break;
 244         case SCR_GOLD_DETECTION:
 245                 /*
 246                  * Unfortunately this code has become slightly less elegant,
 247                  * now that gold and traps no longer are of the same type.
 248                  */
 249                 if (confused) {
 250                         struct trap *ttmp;
 251
 252                         if (!ftrap) {
 253                                 strange_feeling(scroll, "Your toes stop itching.");
 254                                 return (1);
 255                         } else {
 256                                 for (ttmp = ftrap; ttmp; ttmp = ttmp->ntrap)
 257                                         if (ttmp->tx != u.ux || ttmp->ty != u.uy)
 258                                                 goto outtrapmap;
 259                                 /* only under me - no separate display required */
 260                                 pline("Your toes itch!");
 261                                 break;
 262 outtrapmap:
 263                                 cls();
 264                                 for (ttmp = ftrap; ttmp; ttmp = ttmp->ntrap)
 265                                         at(ttmp->tx, ttmp->ty, '$');
 266                                 prme();
 267                                 pline("You feel very greedy!");
 268                         }
 269                 } else {
 270                         struct gold *gtmp;
 271
 272                         if (!fgold) {
 273                                 strange_feeling(scroll, "You feel materially poor.");
 274                                 return (1);
 275                         } else {
 276                                 known = TRUE;
 277                                 for (gtmp = fgold; gtmp; gtmp = gtmp->ngold)
 278                                         if (gtmp->gx != u.ux || gtmp->gy != u.uy)
 279                                                 goto outgoldmap;
 280                                 /* only under me - no separate display required */
 281                                 pline("You notice some gold between your feet.");
 282                                 break;
 283 outgoldmap:
 284                                 cls();
 285                                 for (gtmp = fgold; gtmp; gtmp = gtmp->ngold)
 286                                         at(gtmp->gx, gtmp->gy, '$');
 287                                 prme();
 288                                 pline("You feel very greedy, and sense gold!");
 289                         }
 290                 }
 291                 /* common sequel */
 292                 more();
 293                 docrt();
 294                 break;
 295         case SCR_FOOD_DETECTION:
 296                 {
 297                         int ct = 0, ctu = 0;
 298                         struct obj *obj;
 299                         char foodsym = confused ? POTION_SYM : FOOD_SYM;
 300
 301                         for (obj = fobj; obj; obj = obj->nobj)
 302                                 if (obj->olet == FOOD_SYM) {
 303                                         if (obj->ox == u.ux && obj->oy == u.uy)
 304                                                 ctu++;
 305                                         else
 306                                                 ct++;
 307                                 }
 308                         if (!ct && !ctu) {
 309                                 strange_feeling(scroll, "Your nose twitches.");
 310                                 return (1);
 311                         } else if (!ct) {
 312                                 known = TRUE;
 313                                 pline("You smell %s close nearby.",
 314                                     confused ? "something" : "food");
 315                         } else {
 316                                 known = TRUE;
 317                                 cls();
 318                                 for (obj = fobj; obj; obj = obj->nobj)
 319                                         if (obj->olet == foodsym)
 320                                                 at(obj->ox, obj->oy, FOOD_SYM);
 321                                 prme();
 322                                 pline("Your nose tingles and you smell %s!",
 323                                     confused ? "something" : "food");
 324                                 more();
 325                                 docrt();
 326                         }
 327                         break;
 328                 }
 329         case SCR_IDENTIFY:
 330                 /* known = TRUE; */
 331                 if (confused)
 332                         pline("You identify this as an identify scroll.");
 333                 else
 334                         pline("This is an identify scroll.");
 335                 useup(scroll);
 336                 objects[SCR_IDENTIFY].oc_name_known = 1;
 337                 if (!confused)
 338                         while (!ggetobj("identify", identify,
 339                             rn2(5) ? 1 : rn2(5)) && invent)
 340                                 ; /* nothing */
 341                 return (1);
 342         case SCR_MAGIC_MAPPING:
 343                 {
 344                         struct rm *lev;
 345                         int num, zx, zy;
 346
 347                         known = TRUE;
 348                         pline("On this scroll %s a map!",
 349                             confused ? "was" : "is");
 350                         for (zy = 0; zy < ROWNO; zy++)
 351                                 for (zx = 0; zx < COLNO; zx++) {
 352                                         if (confused && rn2(7))
 353                                                 continue;
 354                                         lev = &(levl[zx][zy]);
 355                                         if ((num = lev->typ) == 0)
 356                                                 continue;
 357                                         if (num == SCORR) {
 358                                                 lev->typ = CORR;
 359                                                 lev->scrsym = CORR_SYM;
 360                                         } else if (num == SDOOR) {
 361                                                 lev->typ = DOOR;
 362                                                 lev->scrsym = '+';
 363                                                 /* do sth in doors ? */
 364                                         } else if (lev->seen)
 365                                                 continue;
 366 #ifndef QUEST
 367                                         if (num != ROOM)
 368 #endif /* QUEST */
 369                                         {
 370                                                 lev->seen = lev->new = 1;
 371                                                 if (lev->scrsym == ' ' || !lev->scrsym)
 372                                                         newsym(zx, zy);
 373                                                 else
 374                                                         on_scr(zx, zy);
 375                                         }
 376                                 }
 377                         break;
 378                 }
 379         case SCR_AMNESIA:
 380                 {
 381                         int zx, zy;
 382
 383                         known = TRUE;
 384                         for (zx = 0; zx < COLNO; zx++)
 385                                 for (zy = 0; zy < ROWNO; zy++)
 386                                         if (!confused || rn2(7))
 387                                                 if (!cansee(zx, zy))
 388                                                         levl[zx][zy].seen = 0;
 389                         docrt();
 390                         pline("Thinking of Maud you forget everything else.");
 391                         break;
 392                 }
 393         case SCR_FIRE:
 394                 {
 395                         int num = 0;
 396                         struct monst *mtmp;
 397
 398                         known = TRUE;
 399                         if (confused) {
 400                                 pline("The scroll catches fire and you burn your hands.");
 401                                 losehp(1, "scroll of fire");
 402                         } else {
 403                                 pline("The scroll erupts in a tower of flame!");
 404                                 if (Fire_resistance)
 405                                         pline("You are uninjured.");
 406                                 else {
 407                                         num = rnd(6);
 408                                         u.uhpmax -= num;
 409                                         losehp(num, "scroll of fire");
 410                                 }
 411                         }
 412                         num = (2 * num + 1) / 3;
 413                         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
 414                                 if (dist(mtmp->mx, mtmp->my) < 3) {
 415                                         mtmp->mhp -= num;
 416                                         if (strchr("FY", mtmp->data->mlet))
 417                                                 mtmp->mhp -= 3 * num;   /* this might well kill 'F's */
 418                                         if (mtmp->mhp < 1) {
 419                                                 killed(mtmp);
 420                                                 break;  /* primitive */
 421                                         }
 422                                 }
 423                         }
 424                         break;
 425                 }
 426         case SCR_PUNISHMENT:
 427                 known = TRUE;
 428                 if (confused) {
 429                         pline("You feel guilty.");
 430                         break;
 431                 }
 432                 pline("You are being punished for your misbehaviour!");
 433                 if (Punished) {
 434                         pline("Your iron ball gets heavier.");
 435                         uball->owt += 15;
 436                         break;
 437                 }
 438                 Punished = INTRINSIC;
 439                 setworn(mkobj_at(CHAIN_SYM, u.ux, u.uy), W_CHAIN);
 440                 setworn(mkobj_at(BALL_SYM, u.ux, u.uy), W_BALL);
 441                 uball->spe = 1;         /* special ball (see save) */
 442                 break;
 443         default:
 444                 impossible("What weird language is this written in? (%u)",
 445                            scroll->otyp);
 446         }
 447         if (!objects[scroll->otyp].oc_name_known) {
 448                 if (known && !confused) {
 449                         objects[scroll->otyp].oc_name_known = 1;
 450                         more_experienced(0, 10);
 451                 } else if (!objects[scroll->otyp].oc_uname)
 452                         docall(scroll);
 453         }
 454         useup(scroll);
 455         return (1);
 456 }
 457
 458 int
 459 identify(struct obj *otmp)              /* also called by newmail() */
 460 {
 461         objects[otmp->otyp].oc_name_known = 1;
 462         otmp->known = otmp->dknown = 1;
 463         prinv(otmp);
 464         return (1);
 465 }
 466
 467 void
 468 litroom(bool on)
 469 {
 470 #ifndef QUEST
 471         int num, zx, zy;
 472 #endif
 473
 474         /* first produce the text (provided he is not blind) */
 475         if (Blind)
 476                 goto do_it;
 477         if (!on) {
 478                 if (u.uswallow || !xdnstair || levl[u.ux][u.uy].typ == CORR ||
 479                     !levl[u.ux][u.uy].lit) {
 480                         pline("It seems even darker in here than before.");
 481                         return;
 482                 } else
 483                         pline("It suddenly becomes dark in here.");
 484         } else {
 485                 if (u.uswallow) {
 486                         pline("%s's stomach is lit.", Monnam(u.ustuck));
 487                         return;
 488                 }
 489                 if (!xdnstair) {
 490                         pline("Nothing Happens.");
 491                         return;
 492                 }
 493 #ifdef QUEST
 494                 pline("The cave lights up around you, then fades.");
 495                 return;
 496 #else /* QUEST */
 497                 if (levl[u.ux][u.uy].typ == CORR) {
 498                         pline("The corridor lights up around you, then fades.");
 499                         return;
 500                 } else if (levl[u.ux][u.uy].lit) {
 501                         pline("The light here seems better now.");
 502                         return;
 503                 } else
 504                         pline("The room is lit.");
 505 #endif /* QUEST */
 506         }
 507
 508 do_it:
 509 #ifdef QUEST
 510         return;
 511 #else /* QUEST */
 512         if (levl[u.ux][u.uy].lit == on)
 513                 return;
 514         if (levl[u.ux][u.uy].typ == DOOR) {
 515                 if (IS_ROOM(levl[u.ux][u.uy + 1].typ))
 516                         zy = u.uy + 1;
 517                 else if (IS_ROOM(levl[u.ux][u.uy - 1].typ))
 518                         zy = u.uy - 1;
 519                 else
 520                         zy = u.uy;
 521                 if (IS_ROOM(levl[u.ux + 1][u.uy].typ))
 522                         zx = u.ux + 1;
 523                 else if (IS_ROOM(levl[u.ux - 1][u.uy].typ))
 524                         zx = u.ux - 1;
 525                 else
 526                         zx = u.ux;
 527         } else {
 528                 zx = u.ux;
 529                 zy = u.uy;
 530         }
 531         for (seelx = u.ux; (num = levl[seelx - 1][zy].typ) != CORR && num != 0;
 532              seelx--) ;
 533         for (seehx = u.ux; (num = levl[seehx + 1][zy].typ) != CORR && num != 0;
 534              seehx++) ;
 535         for (seely = u.uy; (num = levl[zx][seely - 1].typ) != CORR && num != 0;
 536              seely--) ;
 537         for (seehy = u.uy; (num = levl[zx][seehy + 1].typ) != CORR && num != 0;
 538              seehy++) ;
 539         for (zy = seely; zy <= seehy; zy++)
 540                 for (zx = seelx; zx <= seehx; zx++) {
 541                         levl[zx][zy].lit = on;
 542                         if (!Blind && dist(zx, zy) > 2) {
 543                                 if (on)
 544                                         prl(zx, zy);
 545                                 else
 546                                         nosee(zx, zy);
 547                         }
 548                 }
 549         if (!on)
 550                 seehx = 0;
 551 #endif /* QUEST */
 552 }
 553
 554 /* Test whether we may genocide all monsters with symbol  ch  */
 555 static bool
 556 monstersym(char ch)             /* arnold@ucsfcgl */
 557 {
 558         struct permonst *mp;
 559
 560         /*
 561          * can't genocide certain monsters
 562          */
 563         if (strchr("12 &:", ch))
 564                 return (FALSE);
 565
 566         if (ch == pm_eel.mlet)
 567                 return (TRUE);
 568         for (mp = mons; mp < &mons[CMNUM + 2]; mp++)
 569                 if (mp->mlet == ch)
 570                         return (TRUE);
 571         return (FALSE);
 572 }