rogue/pack.c

   1 /*
   2  * Copyright (c) 1988 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Timothy C. Stoehr.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #ifndef lint
  38 /*static char sccsid[] = "from: @(#)pack.c      5.3 (Berkeley) 6/1/90";*/
  39 static char rcsid[] = "$Id: pack.c,v 1.2 1993/08/01 18:52:20 mycroft Exp $";
  40 #endif /* not lint */
  41
  42 /*
  43  * pack.c
  44  *
  45  * This source herein may be modified and/or distributed by anybody who
  46  * so desires, with the following restrictions:
  47  *    1.)  No portion of this notice shall be removed.
  48  *    2.)  Credit shall not be taken for the creation of this source.
  49  *    3.)  This code is not to be traded, sold, or used for personal
  50  *         gain or profit.
  51  *
  52  */
  53
  54 #include "rogue.h"
  55
  56 char *curse_message = "you can't, it appears to be cursed";
  57
  58 extern short levitate;
  59
  60 object *
  61 add_to_pack(obj, pack, condense)
  62 object *obj, *pack;
  63 {
  64         object *op;
  65
  66         if (condense) {
  67                 if (op = check_duplicate(obj, pack)) {
  68                         free_object(obj);
  69                         return(op);
  70                 } else {
  71                         obj->ichar = next_avail_ichar();
  72                 }
  73         }
  74         if (pack->next_object == 0) {
  75                 pack->next_object = obj;
  76         } else {
  77                 op = pack->next_object;
  78
  79                 while (op->next_object) {
  80                         op = op->next_object;
  81                 }
  82                 op->next_object = obj;
  83         }
  84         obj->next_object = 0;
  85         return(obj);
  86 }
  87
  88 take_from_pack(obj, pack)
  89 object *obj, *pack;
  90 {
  91         while (pack->next_object != obj) {
  92                 pack = pack->next_object;
  93         }
  94         pack->next_object = pack->next_object->next_object;
  95 }
  96
  97 /* Note: *status is set to 0 if the rogue attempts to pick up a scroll
  98  * of scare-monster and it turns to dust.  *status is otherwise set to 1.
  99  */
 100
 101 object *
 102 pick_up(row, col, status)
 103 short *status;
 104 {
 105         object *obj;
 106
 107         *status = 1;
 108
 109         if (levitate) {
 110                 message("you're floating in the air!", 0);
 111                 return((object *) 0);
 112         }
 113         obj = object_at(&level_objects, row, col);
 114         if (!obj) {
 115                 message("pick_up(): inconsistent", 1);
 116                 return(obj);
 117         }
 118         if (    (obj->what_is == SCROL) &&
 119                         (obj->which_kind == SCARE_MONSTER) &&
 120                         obj->picked_up) {
 121                 message("the scroll turns to dust as you pick it up", 0);
 122                 dungeon[row][col] &= (~OBJECT);
 123                 vanish(obj, 0, &level_objects);
 124                 *status = 0;
 125                 if (id_scrolls[SCARE_MONSTER].id_status == UNIDENTIFIED) {
 126                         id_scrolls[SCARE_MONSTER].id_status = IDENTIFIED;
 127                 }
 128                 return((object *) 0);
 129         }
 130         if (obj->what_is == GOLD) {
 131                 rogue.gold += obj->quantity;
 132                 dungeon[row][col] &= ~(OBJECT);
 133                 take_from_pack(obj, &level_objects);
 134                 print_stats(STAT_GOLD);
 135                 return(obj);    /* obj will be free_object()ed in caller */
 136         }
 137         if (pack_count(obj) >= MAX_PACK_COUNT) {
 138                 message("pack too full", 1);
 139                 return((object *) 0);
 140         }
 141         dungeon[row][col] &= ~(OBJECT);
 142         take_from_pack(obj, &level_objects);
 143         obj = add_to_pack(obj, &rogue.pack, 1);
 144         obj->picked_up = 1;
 145         return(obj);
 146 }
 147
 148 drop()
 149 {
 150         object *obj, *new;
 151         short ch;
 152         char desc[DCOLS];
 153
 154         if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
 155                 message("there's already something there", 0);
 156                 return;
 157         }
 158         if (!rogue.pack.next_object) {
 159                 message("you have nothing to drop", 0);
 160                 return;
 161         }
 162         if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
 163                 return;
 164         }
 165         if (!(obj = get_letter_object(ch))) {
 166                 message("no such item.", 0);
 167                 return;
 168         }
 169         if (obj->in_use_flags & BEING_WIELDED) {
 170                 if (obj->is_cursed) {
 171                         message(curse_message, 0);
 172                         return;
 173                 }
 174                 unwield(rogue.weapon);
 175         } else if (obj->in_use_flags & BEING_WORN) {
 176                 if (obj->is_cursed) {
 177                         message(curse_message, 0);
 178                         return;
 179                 }
 180                 mv_aquatars();
 181                 unwear(rogue.armor);
 182                 print_stats(STAT_ARMOR);
 183         } else if (obj->in_use_flags & ON_EITHER_HAND) {
 184                 if (obj->is_cursed) {
 185                         message(curse_message, 0);
 186                         return;
 187                 }
 188                 un_put_on(obj);
 189         }
 190         obj->row = rogue.row;
 191         obj->col = rogue.col;
 192
 193         if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
 194                 obj->quantity--;
 195                 new = alloc_object();
 196                 *new = *obj;
 197                 new->quantity = 1;
 198                 obj = new;
 199         } else {
 200                 obj->ichar = 'L';
 201                 take_from_pack(obj, &rogue.pack);
 202         }
 203         place_at(obj, rogue.row, rogue.col);
 204         (void) strcpy(desc, "dropped ");
 205         get_desc(obj, desc+8);
 206         message(desc, 0);
 207         (void) reg_move();
 208 }
 209
 210 object *
 211 check_duplicate(obj, pack)
 212 object *obj, *pack;
 213 {
 214         object *op;
 215
 216         if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
 217                 return(0);
 218         }
 219         if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
 220                 return(0);
 221         }
 222         op = pack->next_object;
 223
 224         while (op) {
 225                 if ((op->what_is == obj->what_is) &&
 226                         (op->which_kind == obj->which_kind)) {
 227
 228                         if ((obj->what_is != WEAPON) ||
 229                         ((obj->what_is == WEAPON) &&
 230                         ((obj->which_kind == ARROW) ||
 231                         (obj->which_kind == DAGGER) ||
 232                         (obj->which_kind == DART) ||
 233                         (obj->which_kind == SHURIKEN)) &&
 234                         (obj->quiver == op->quiver))) {
 235                                 op->quantity += obj->quantity;
 236                                 return(op);
 237                         }
 238                 }
 239                 op = op->next_object;
 240         }
 241         return(0);
 242 }
 243
 244 next_avail_ichar()
 245 {
 246         register object *obj;
 247         register i;
 248         boolean ichars[26];
 249
 250         for (i = 0; i < 26; i++) {
 251                 ichars[i] = 0;
 252         }
 253         obj = rogue.pack.next_object;
 254         while (obj) {
 255                 ichars[(obj->ichar - 'a')] = 1;
 256                 obj = obj->next_object;
 257         }
 258         for (i = 0; i < 26; i++) {
 259                 if (!ichars[i]) {
 260                         return(i + 'a');
 261                 }
 262         }
 263         return('?');
 264 }
 265
 266 wait_for_ack()
 267 {
 268         while (rgetchar() != ' ') ;
 269 }
 270
 271 pack_letter(prompt, mask)
 272 char *prompt;
 273 unsigned short mask;
 274 {
 275         short ch;
 276         unsigned short tmask = mask;
 277
 278         if (!mask_pack(&rogue.pack, mask)) {
 279                 message("nothing appropriate", 0);
 280                 return(CANCEL);
 281         }
 282         for (;;) {
 283
 284                 message(prompt, 0);
 285
 286                 for (;;) {
 287                         ch = rgetchar();
 288                         if (!is_pack_letter(&ch, &mask)) {
 289                                 sound_bell();
 290                         } else {
 291                                 break;
 292                         }
 293                 }
 294
 295                 if (ch == LIST) {
 296                         check_message();
 297                         inventory(&rogue.pack, mask);
 298                 } else {
 299                         break;
 300                 }
 301                 mask = tmask;
 302         }
 303         check_message();
 304         return(ch);
 305 }
 306
 307 take_off()
 308 {
 309         char desc[DCOLS];
 310         object *obj;
 311
 312         if (rogue.armor) {
 313                 if (rogue.armor->is_cursed) {
 314                         message(curse_message, 0);
 315                 } else {
 316                         mv_aquatars();
 317                         obj = rogue.armor;
 318                         unwear(rogue.armor);
 319                         (void) strcpy(desc, "was wearing ");
 320                         get_desc(obj, desc+12);
 321                         message(desc, 0);
 322                         print_stats(STAT_ARMOR);
 323                         (void) reg_move();
 324                 }
 325         } else {
 326                 message("not wearing any", 0);
 327         }
 328 }
 329
 330 wear()
 331 {
 332         short ch;
 333         register object *obj;
 334         char desc[DCOLS];
 335
 336         if (rogue.armor) {
 337                 message("your already wearing some", 0);
 338                 return;
 339         }
 340         ch = pack_letter("wear what?", ARMOR);
 341
 342         if (ch == CANCEL) {
 343                 return;
 344         }
 345         if (!(obj = get_letter_object(ch))) {
 346                 message("no such item.", 0);
 347                 return;
 348         }
 349         if (obj->what_is != ARMOR) {
 350                 message("you can't wear that", 0);
 351                 return;
 352         }
 353         obj->identified = 1;
 354         (void) strcpy(desc, "wearing ");
 355         get_desc(obj, desc + 8);
 356         message(desc, 0);
 357         do_wear(obj);
 358         print_stats(STAT_ARMOR);
 359         (void) reg_move();
 360 }
 361
 362 unwear(obj)
 363 object *obj;
 364 {
 365         if (obj) {
 366                 obj->in_use_flags &= (~BEING_WORN);
 367         }
 368         rogue.armor = (object *) 0;
 369 }
 370
 371 do_wear(obj)
 372 object *obj;
 373 {
 374         rogue.armor = obj;
 375         obj->in_use_flags |= BEING_WORN;
 376         obj->identified = 1;
 377 }
 378
 379 wield()
 380 {
 381         short ch;
 382         register object *obj;
 383         char desc[DCOLS];
 384
 385         if (rogue.weapon && rogue.weapon->is_cursed) {
 386                 message(curse_message, 0);
 387                 return;
 388         }
 389         ch = pack_letter("wield what?", WEAPON);
 390
 391         if (ch == CANCEL) {
 392                 return;
 393         }
 394         if (!(obj = get_letter_object(ch))) {
 395                 message("No such item.", 0);
 396                 return;
 397         }
 398         if (obj->what_is & (ARMOR | RING)) {
 399                 sprintf(desc, "you can't wield %s",
 400                         ((obj->what_is == ARMOR) ? "armor" : "rings"));
 401                 message(desc, 0);
 402                 return;
 403         }
 404         if (obj->in_use_flags & BEING_WIELDED) {
 405                 message("in use", 0);
 406         } else {
 407                 unwield(rogue.weapon);
 408                 (void) strcpy(desc, "wielding ");
 409                 get_desc(obj, desc + 9);
 410                 message(desc, 0);
 411                 do_wield(obj);
 412                 (void) reg_move();
 413         }
 414 }
 415
 416 do_wield(obj)
 417 object *obj;
 418 {
 419         rogue.weapon = obj;
 420         obj->in_use_flags |= BEING_WIELDED;
 421 }
 422
 423 unwield(obj)
 424 object *obj;
 425 {
 426         if (obj) {
 427                 obj->in_use_flags &= (~BEING_WIELDED);
 428         }
 429         rogue.weapon = (object *) 0;
 430 }
 431
 432 call_it()
 433 {
 434         short ch;
 435         register object *obj;
 436         struct id *id_table;
 437         char buf[MAX_TITLE_LENGTH+2];
 438
 439         ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
 440
 441         if (ch == CANCEL) {
 442                 return;
 443         }
 444         if (!(obj = get_letter_object(ch))) {
 445                 message("no such item.", 0);
 446                 return;
 447         }
 448         if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
 449                 message("surely you already know what that's called", 0);
 450                 return;
 451         }
 452         id_table = get_id_table(obj);
 453
 454         if (get_input_line("call it:","",buf,id_table[obj->which_kind].title,1,1)) {
 455                 id_table[obj->which_kind].id_status = CALLED;
 456                 (void) strcpy(id_table[obj->which_kind].title, buf);
 457         }
 458 }
 459
 460 pack_count(new_obj)
 461 object *new_obj;
 462 {
 463         object *obj;
 464         short count = 0;
 465
 466         obj = rogue.pack.next_object;
 467
 468         while (obj) {
 469                 if (obj->what_is != WEAPON) {
 470                         count += obj->quantity;
 471                 } else if (!new_obj) {
 472                         count++;
 473                 } else if ((new_obj->what_is != WEAPON) ||
 474                         ((obj->which_kind != ARROW) &&
 475                         (obj->which_kind != DAGGER) &&
 476                         (obj->which_kind != DART) &&
 477                         (obj->which_kind != SHURIKEN)) ||
 478                         (new_obj->which_kind != obj->which_kind) ||
 479                         (obj->quiver != new_obj->quiver)) {
 480                         count++;
 481                 }
 482                 obj = obj->next_object;
 483         }
 484         return(count);
 485 }
 486
 487 boolean
 488 mask_pack(pack, mask)
 489 object *pack;
 490 unsigned short mask;
 491 {
 492         while (pack->next_object) {
 493                 pack = pack->next_object;
 494                 if (pack->what_is & mask) {
 495                         return(1);
 496                 }
 497         }
 498         return(0);
 499 }
 500
 501 is_pack_letter(c, mask)
 502 short *c;
 503 unsigned short *mask;
 504 {
 505         if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
 506                 (*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
 507                 switch(*c) {
 508                 case '?':
 509                         *mask = SCROL;
 510                         break;
 511                 case '!':
 512                         *mask = POTION;
 513                         break;
 514                 case ':':
 515                         *mask = FOOD;
 516                         break;
 517                 case ')':
 518                         *mask = WEAPON;
 519                         break;
 520                 case ']':
 521                         *mask = ARMOR;
 522                         break;
 523                 case '/':
 524                         *mask = WAND;
 525                         break;
 526                 case '=':
 527                         *mask = RING;
 528                         break;
 529                 case ',':
 530                         *mask = AMULET;
 531                         break;
 532                 }
 533                 *c = LIST;
 534                 return(1);
 535         }
 536         return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
 537 }
 538
 539 has_amulet()
 540 {
 541         return(mask_pack(&rogue.pack, AMULET));
 542 }
 543
 544 kick_into_pack()
 545 {
 546         object *obj;
 547         char desc[DCOLS];
 548         short n, stat;
 549
 550         if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
 551                 message("nothing here", 0);
 552         } else {
 553                 if (obj = pick_up(rogue.row, rogue.col, &stat)) {
 554                         get_desc(obj, desc);
 555                         if (obj->what_is == GOLD) {
 556                                 message(desc, 0);
 557                                 free_object(obj);
 558                         } else {
 559                                 n = strlen(desc);
 560                                 desc[n] = '(';
 561                                 desc[n+1] = obj->ichar;
 562                                 desc[n+2] = ')';
 563                                 desc[n+3] = 0;
 564                                 message(desc, 0);
 565                         }
 566                 }
 567                 if (obj || (!stat)) {
 568                         (void) reg_move();
 569                 }
 570         }
 571 }