rogue/pack.c

   1 /*      $NetBSD: pack.c,v 1.8 2007/12/27 23:53:00 dholland Exp $        */
   2
   3 /*
   4  * Copyright (c) 1988, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Timothy C. Stoehr.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. 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  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)pack.c      8.1 (Berkeley) 5/31/93";
  39 #else
  40 __RCSID("$NetBSD: pack.c,v 1.8 2007/12/27 23:53:00 dholland Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 /*
  45  * pack.c
  46  *
  47  * This source herein may be modified and/or distributed by anybody who
  48  * so desires, with the following restrictions:
  49  *    1.)  No portion of this notice shall be removed.
  50  *    2.)  Credit shall not be taken for the creation of this source.
  51  *    3.)  This code is not to be traded, sold, or used for personal
  52  *         gain or profit.
  53  *
  54  */
  55
  56 #include "rogue.h"
  57
  58 const char *curse_message = "you can't, it appears to be cursed";
  59
  60 object *
  61 add_to_pack(obj, pack, condense)
  62         object *obj, *pack;
  63         int condense;
  64 {
  65         object *op;
  66
  67         if (condense) {
  68                 if ((op = check_duplicate(obj, pack)) != NULL) {
  69                         free_object(obj);
  70                         return(op);
  71                 } else {
  72                         obj->ichar = next_avail_ichar();
  73                 }
  74         }
  75         if (pack->next_object == 0) {
  76                 pack->next_object = obj;
  77         } else {
  78                 op = pack->next_object;
  79
  80                 while (op->next_object) {
  81                         op = op->next_object;
  82                 }
  83                 op->next_object = obj;
  84         }
  85         obj->next_object = 0;
  86         return(obj);
  87 }
  88
  89 void
  90 take_from_pack(obj, pack)
  91         object *obj, *pack;
  92 {
  93         while (pack->next_object != obj) {
  94                 pack = pack->next_object;
  95         }
  96         pack->next_object = pack->next_object->next_object;
  97 }
  98
  99 /* Note: *status is set to 0 if the rogue attempts to pick up a scroll
 100  * of scare-monster and it turns to dust.  *status is otherwise set to 1.
 101  */
 102
 103 object *
 104 pick_up(row, col, status)
 105         short *status;
 106         int row, col;
 107 {
 108         object *obj;
 109
 110         *status = 1;
 111
 112         if (levitate) {
 113                 messagef(0, "you're floating in the air!");
 114                 return((object *) 0);
 115         }
 116         obj = object_at(&level_objects, row, col);
 117         if (!obj) {
 118                 messagef(1, "pick_up(): inconsistent");
 119                 return(obj);
 120         }
 121         if (    (obj->what_is == SCROL) &&
 122                         (obj->which_kind == SCARE_MONSTER) &&
 123                         obj->picked_up) {
 124                 messagef(0, "the scroll turns to dust as you pick it up");
 125                 dungeon[row][col] &= (~OBJECT);
 126                 vanish(obj, 0, &level_objects);
 127                 *status = 0;
 128                 if (id_scrolls[SCARE_MONSTER].id_status == UNIDENTIFIED) {
 129                         id_scrolls[SCARE_MONSTER].id_status = IDENTIFIED;
 130                 }
 131                 return((object *) 0);
 132         }
 133         if (obj->what_is == GOLD) {
 134                 rogue.gold += obj->quantity;
 135                 dungeon[row][col] &= ~(OBJECT);
 136                 take_from_pack(obj, &level_objects);
 137                 print_stats(STAT_GOLD);
 138                 return(obj);    /* obj will be free_object()ed in caller */
 139         }
 140         if (pack_count(obj) >= MAX_PACK_COUNT) {
 141                 messagef(1, "pack too full");
 142                 return((object *) 0);
 143         }
 144         dungeon[row][col] &= ~(OBJECT);
 145         take_from_pack(obj, &level_objects);
 146         obj = add_to_pack(obj, &rogue.pack, 1);
 147         obj->picked_up = 1;
 148         return(obj);
 149 }
 150
 151 void
 152 drop()
 153 {
 154         object *obj, *new;
 155         short ch;
 156         char desc[DCOLS];
 157
 158         if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
 159                 messagef(0, "there's already something there");
 160                 return;
 161         }
 162         if (!rogue.pack.next_object) {
 163                 messagef(0, "you have nothing to drop");
 164                 return;
 165         }
 166         if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
 167                 return;
 168         }
 169         if (!(obj = get_letter_object(ch))) {
 170                 messagef(0, "no such item.");
 171                 return;
 172         }
 173         if (obj->in_use_flags & BEING_WIELDED) {
 174                 if (obj->is_cursed) {
 175                         messagef(0, "%s", curse_message);
 176                         return;
 177                 }
 178                 unwield(rogue.weapon);
 179         } else if (obj->in_use_flags & BEING_WORN) {
 180                 if (obj->is_cursed) {
 181                         messagef(0, "%s", curse_message);
 182                         return;
 183                 }
 184                 mv_aquatars();
 185                 unwear(rogue.armor);
 186                 print_stats(STAT_ARMOR);
 187         } else if (obj->in_use_flags & ON_EITHER_HAND) {
 188                 if (obj->is_cursed) {
 189                         messagef(0, "%s", curse_message);
 190                         return;
 191                 }
 192                 un_put_on(obj);
 193         }
 194         obj->row = rogue.row;
 195         obj->col = rogue.col;
 196
 197         if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
 198                 obj->quantity--;
 199                 new = alloc_object();
 200                 *new = *obj;
 201                 new->quantity = 1;
 202                 obj = new;
 203         } else {
 204                 obj->ichar = 'L';
 205                 take_from_pack(obj, &rogue.pack);
 206         }
 207         place_at(obj, rogue.row, rogue.col);
 208         get_desc(obj, desc, sizeof(desc));
 209         messagef(0, "dropped %s", desc);
 210         (void) reg_move();
 211 }
 212
 213 object *
 214 check_duplicate(obj, pack)
 215         object *obj, *pack;
 216 {
 217         object *op;
 218
 219         if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
 220                 return(0);
 221         }
 222         if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
 223                 return(0);
 224         }
 225         op = pack->next_object;
 226
 227         while (op) {
 228                 if ((op->what_is == obj->what_is) &&
 229                         (op->which_kind == obj->which_kind)) {
 230
 231                         if ((obj->what_is != WEAPON) ||
 232                         ((obj->what_is == WEAPON) &&
 233                         ((obj->which_kind == ARROW) ||
 234                         (obj->which_kind == DAGGER) ||
 235                         (obj->which_kind == DART) ||
 236                         (obj->which_kind == SHURIKEN)) &&
 237                         (obj->quiver == op->quiver))) {
 238                                 op->quantity += obj->quantity;
 239                                 return(op);
 240                         }
 241                 }
 242                 op = op->next_object;
 243         }
 244         return(0);
 245 }
 246
 247 short
 248 next_avail_ichar()
 249 {
 250         object *obj;
 251         int i;
 252         boolean ichars[26];
 253
 254         for (i = 0; i < 26; i++) {
 255                 ichars[i] = 0;
 256         }
 257         obj = rogue.pack.next_object;
 258         while (obj) {
 259                 if (obj->ichar >= 'a' && obj->ichar <= 'z') {
 260                         ichars[(obj->ichar - 'a')] = 1;
 261                 }
 262                 obj = obj->next_object;
 263         }
 264         for (i = 0; i < 26; i++) {
 265                 if (!ichars[i]) {
 266                         return(i + 'a');
 267                 }
 268         }
 269         return('?');
 270 }
 271
 272 void
 273 wait_for_ack()
 274 {
 275         while (rgetchar() != ' ') ;
 276 }
 277
 278 short
 279 pack_letter(prompt, mask)
 280         const char *prompt;
 281         unsigned short mask;
 282 {
 283         short ch;
 284         unsigned short tmask = mask;
 285
 286         if (!mask_pack(&rogue.pack, mask)) {
 287                 messagef(0, "nothing appropriate");
 288                 return(CANCEL);
 289         }
 290         for (;;) {
 291
 292                 messagef(0, "%s", prompt);
 293
 294                 for (;;) {
 295                         ch = rgetchar();
 296                         if (!is_pack_letter(&ch, &mask)) {
 297                                 sound_bell();
 298                         } else {
 299                                 break;
 300                         }
 301                 }
 302
 303                 if (ch == LIST) {
 304                         check_message();
 305                         mask = tmask;
 306                         inventory(&rogue.pack, mask);
 307                 } else {
 308                         break;
 309                 }
 310                 mask = tmask;
 311         }
 312         check_message();
 313         return(ch);
 314 }
 315
 316 void
 317 take_off()
 318 {
 319         char desc[DCOLS];
 320         object *obj;
 321
 322         if (rogue.armor) {
 323                 if (rogue.armor->is_cursed) {
 324                         messagef(0, "%s", curse_message);
 325                 } else {
 326                         mv_aquatars();
 327                         obj = rogue.armor;
 328                         unwear(rogue.armor);
 329                         get_desc(obj, desc, sizeof(desc));
 330                         messagef(0, "was wearing %s", desc);
 331                         print_stats(STAT_ARMOR);
 332                         (void) reg_move();
 333                 }
 334         } else {
 335                 messagef(0, "not wearing any");
 336         }
 337 }
 338
 339 void
 340 wear()
 341 {
 342         short ch;
 343         object *obj;
 344         char desc[DCOLS];
 345
 346         if (rogue.armor) {
 347                 messagef(0, "you're already wearing some");
 348                 return;
 349         }
 350         ch = pack_letter("wear what?", ARMOR);
 351
 352         if (ch == CANCEL) {
 353                 return;
 354         }
 355         if (!(obj = get_letter_object(ch))) {
 356                 messagef(0, "no such item.");
 357                 return;
 358         }
 359         if (obj->what_is != ARMOR) {
 360                 messagef(0, "you can't wear that");
 361                 return;
 362         }
 363         obj->identified = 1;
 364         get_desc(obj, desc, sizeof(desc));
 365         messagef(0, "wearing %s", desc);
 366         do_wear(obj);
 367         print_stats(STAT_ARMOR);
 368         (void) reg_move();
 369 }
 370
 371 void
 372 unwear(obj)
 373         object *obj;
 374 {
 375         if (obj) {
 376                 obj->in_use_flags &= (~BEING_WORN);
 377         }
 378         rogue.armor = (object *) 0;
 379 }
 380
 381 void
 382 do_wear(obj)
 383         object *obj;
 384 {
 385         rogue.armor = obj;
 386         obj->in_use_flags |= BEING_WORN;
 387         obj->identified = 1;
 388 }
 389
 390 void
 391 wield()
 392 {
 393         short ch;
 394         object *obj;
 395         char desc[DCOLS];
 396
 397         if (rogue.weapon && rogue.weapon->is_cursed) {
 398                 messagef(0, "%s", curse_message);
 399                 return;
 400         }
 401         ch = pack_letter("wield what?", WEAPON);
 402
 403         if (ch == CANCEL) {
 404                 return;
 405         }
 406         if (!(obj = get_letter_object(ch))) {
 407                 messagef(0, "No such item.");
 408                 return;
 409         }
 410         if (obj->what_is & (ARMOR | RING)) {
 411                 messagef(0, "you can't wield %s",
 412                         ((obj->what_is == ARMOR) ? "armor" : "rings"));
 413                 return;
 414         }
 415         if (obj->in_use_flags & BEING_WIELDED) {
 416                 messagef(0, "in use");
 417         } else {
 418                 unwield(rogue.weapon);
 419                 get_desc(obj, desc, sizeof(desc));
 420                 messagef(0, "wielding %s", desc);
 421                 do_wield(obj);
 422                 (void) reg_move();
 423         }
 424 }
 425
 426 void
 427 do_wield(obj)
 428         object *obj;
 429 {
 430         rogue.weapon = obj;
 431         obj->in_use_flags |= BEING_WIELDED;
 432 }
 433
 434 void
 435 unwield(obj)
 436         object *obj;
 437 {
 438         if (obj) {
 439                 obj->in_use_flags &= (~BEING_WIELDED);
 440         }
 441         rogue.weapon = (object *) 0;
 442 }
 443
 444 void
 445 call_it()
 446 {
 447         short ch;
 448         object *obj;
 449         struct id *id_table;
 450         char buf[MAX_TITLE_LENGTH+2];
 451
 452         ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
 453
 454         if (ch == CANCEL) {
 455                 return;
 456         }
 457         if (!(obj = get_letter_object(ch))) {
 458                 messagef(0, "no such item.");
 459                 return;
 460         }
 461         if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
 462                 messagef(0, "surely you already know what that's called");
 463                 return;
 464         }
 465         id_table = get_id_table(obj);
 466
 467         if (get_input_line("call it:", "", buf, sizeof(buf),
 468                         id_table[obj->which_kind].title, 1, 1)) {
 469                 id_table[obj->which_kind].id_status = CALLED;
 470                 (void) strlcpy(id_table[obj->which_kind].title, buf,
 471                                 sizeof(id_table[obj->which_kind].title));
 472         }
 473 }
 474
 475 short
 476 pack_count(new_obj)
 477         const object *new_obj;
 478 {
 479         object *obj;
 480         short count = 0;
 481
 482         obj = rogue.pack.next_object;
 483
 484         while (obj) {
 485                 if (obj->what_is != WEAPON) {
 486                         count += obj->quantity;
 487                 } else if (!new_obj) {
 488                         count++;
 489                 } else if ((new_obj->what_is != WEAPON) ||
 490                         ((obj->which_kind != ARROW) &&
 491                         (obj->which_kind != DAGGER) &&
 492                         (obj->which_kind != DART) &&
 493                         (obj->which_kind != SHURIKEN)) ||
 494                         (new_obj->which_kind != obj->which_kind) ||
 495                         (obj->quiver != new_obj->quiver)) {
 496                         count++;
 497                 }
 498                 obj = obj->next_object;
 499         }
 500         return(count);
 501 }
 502
 503 boolean
 504 mask_pack(pack, mask)
 505         const object *pack;
 506         unsigned short mask;
 507 {
 508         while (pack->next_object) {
 509                 pack = pack->next_object;
 510                 if (pack->what_is & mask) {
 511                         return(1);
 512                 }
 513         }
 514         return(0);
 515 }
 516
 517 boolean
 518 is_pack_letter(c, mask)
 519         short *c;
 520         unsigned short *mask;
 521 {
 522         if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
 523                 (*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
 524                 switch(*c) {
 525                 case '?':
 526                         *mask = SCROL;
 527                         break;
 528                 case '!':
 529                         *mask = POTION;
 530                         break;
 531                 case ':':
 532                         *mask = FOOD;
 533                         break;
 534                 case ')':
 535                         *mask = WEAPON;
 536                         break;
 537                 case ']':
 538                         *mask = ARMOR;
 539                         break;
 540                 case '/':
 541                         *mask = WAND;
 542                         break;
 543                 case '=':
 544                         *mask = RING;
 545                         break;
 546                 case ',':
 547                         *mask = AMULET;
 548                         break;
 549                 }
 550                 *c = LIST;
 551                 return(1);
 552         }
 553         return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
 554 }
 555
 556 boolean
 557 has_amulet()
 558 {
 559         return(mask_pack(&rogue.pack, AMULET));
 560 }
 561
 562 void
 563 kick_into_pack()
 564 {
 565         object *obj;
 566         char desc[DCOLS];
 567         short stat;
 568
 569         if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
 570                 messagef(0, "nothing here");
 571         } else {
 572                 if ((obj = pick_up(rogue.row, rogue.col, &stat)) != NULL) {
 573                         get_desc(obj, desc, sizeof(desc));
 574                         if (obj->what_is == GOLD) {
 575                                 messagef(0, "%s", desc);
 576                                 free_object(obj);
 577                         } else {
 578                                 messagef(0, "%s(%c)", desc, obj->ichar);
 579                         }
 580                 }
 581                 if (obj || (!stat)) {
 582                         (void) reg_move();
 583                 }
 584         }
 585 }