rogue/pack.c

   1 /*      $NetBSD: pack.c,v 1.10 2008/01/14 03:50:02 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 1.10 2008/01/14 03:50:02 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(object *obj, object *pack, int condense)
  62 {
  63         object *op;
  64
  65         if (condense) {
  66                 if ((op = check_duplicate(obj, pack)) != NULL) {
  67                         free_object(obj);
  68                         return(op);
  69                 } else {
  70                         obj->ichar = next_avail_ichar();
  71                 }
  72         }
  73         if (pack->next_object == 0) {
  74                 pack->next_object = obj;
  75         } else {
  76                 op = pack->next_object;
  77
  78                 while (op->next_object) {
  79                         op = op->next_object;
  80                 }
  81                 op->next_object = obj;
  82         }
  83         obj->next_object = 0;
  84         return(obj);
  85 }
  86
  87 void
  88 take_from_pack(object *obj, object *pack)
  89 {
  90         while (pack->next_object != obj) {
  91                 pack = pack->next_object;
  92         }
  93         pack->next_object = pack->next_object->next_object;
  94 }
  95
  96 /* Note: *status is set to 0 if the rogue attempts to pick up a scroll
  97  * of scare-monster and it turns to dust.  *status is otherwise set to 1.
  98  */
  99
 100 object *
 101 pick_up(int row, int col, short *status)
 102 {
 103         object *obj;
 104
 105         *status = 1;
 106
 107         if (levitate) {
 108                 messagef(0, "you're floating in the air!");
 109                 return NULL;
 110         }
 111         obj = object_at(&level_objects, row, col);
 112         if (!obj) {
 113                 messagef(1, "pick_up(): inconsistent");
 114                 return(obj);
 115         }
 116         if (    (obj->what_is == SCROL) &&
 117                         (obj->which_kind == SCARE_MONSTER) &&
 118                         obj->picked_up) {
 119                 messagef(0, "the scroll turns to dust as you pick it up");
 120                 dungeon[row][col] &= (~OBJECT);
 121                 vanish(obj, 0, &level_objects);
 122                 *status = 0;
 123                 if (id_scrolls[SCARE_MONSTER].id_status == UNIDENTIFIED) {
 124                         id_scrolls[SCARE_MONSTER].id_status = IDENTIFIED;
 125                 }
 126                 return NULL;
 127         }
 128         if (obj->what_is == GOLD) {
 129                 rogue.gold += obj->quantity;
 130                 dungeon[row][col] &= ~(OBJECT);
 131                 take_from_pack(obj, &level_objects);
 132                 print_stats(STAT_GOLD);
 133                 return(obj);    /* obj will be free_object()ed in caller */
 134         }
 135         if (pack_count(obj) >= MAX_PACK_COUNT) {
 136                 messagef(1, "pack too full");
 137                 return NULL;
 138         }
 139         dungeon[row][col] &= ~(OBJECT);
 140         take_from_pack(obj, &level_objects);
 141         obj = add_to_pack(obj, &rogue.pack, 1);
 142         obj->picked_up = 1;
 143         return(obj);
 144 }
 145
 146 void
 147 drop(void)
 148 {
 149         object *obj, *new;
 150         short ch;
 151         char desc[DCOLS];
 152
 153         if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
 154                 messagef(0, "there's already something there");
 155                 return;
 156         }
 157         if (!rogue.pack.next_object) {
 158                 messagef(0, "you have nothing to drop");
 159                 return;
 160         }
 161         if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
 162                 return;
 163         }
 164         if (!(obj = get_letter_object(ch))) {
 165                 messagef(0, "no such item.");
 166                 return;
 167         }
 168         if (obj->in_use_flags & BEING_WIELDED) {
 169                 if (obj->is_cursed) {
 170                         messagef(0, "%s", curse_message);
 171                         return;
 172                 }
 173                 unwield(rogue.weapon);
 174         } else if (obj->in_use_flags & BEING_WORN) {
 175                 if (obj->is_cursed) {
 176                         messagef(0, "%s", curse_message);
 177                         return;
 178                 }
 179                 mv_aquatars();
 180                 unwear(rogue.armor);
 181                 print_stats(STAT_ARMOR);
 182         } else if (obj->in_use_flags & ON_EITHER_HAND) {
 183                 if (obj->is_cursed) {
 184                         messagef(0, "%s", curse_message);
 185                         return;
 186                 }
 187                 un_put_on(obj);
 188         }
 189         obj->row = rogue.row;
 190         obj->col = rogue.col;
 191
 192         if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
 193                 obj->quantity--;
 194                 new = alloc_object();
 195                 *new = *obj;
 196                 new->quantity = 1;
 197                 obj = new;
 198         } else {
 199                 obj->ichar = 'L';
 200                 take_from_pack(obj, &rogue.pack);
 201         }
 202         place_at(obj, rogue.row, rogue.col);
 203         get_desc(obj, desc, sizeof(desc));
 204         messagef(0, "dropped %s", desc);
 205         (void)reg_move();
 206 }
 207
 208 object *
 209 check_duplicate(object *obj, object *pack)
 210 {
 211         object *op;
 212
 213         if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
 214                 return(0);
 215         }
 216         if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
 217                 return(0);
 218         }
 219         op = pack->next_object;
 220
 221         while (op) {
 222                 if ((op->what_is == obj->what_is) &&
 223                         (op->which_kind == obj->which_kind)) {
 224
 225                         if ((obj->what_is != WEAPON) ||
 226                         ((obj->what_is == WEAPON) &&
 227                         ((obj->which_kind == ARROW) ||
 228                         (obj->which_kind == DAGGER) ||
 229                         (obj->which_kind == DART) ||
 230                         (obj->which_kind == SHURIKEN)) &&
 231                         (obj->quiver == op->quiver))) {
 232                                 op->quantity += obj->quantity;
 233                                 return(op);
 234                         }
 235                 }
 236                 op = op->next_object;
 237         }
 238         return(0);
 239 }
 240
 241 short
 242 next_avail_ichar(void)
 243 {
 244         object *obj;
 245         int i;
 246         boolean ichars[26];
 247
 248         for (i = 0; i < 26; i++) {
 249                 ichars[i] = 0;
 250         }
 251         obj = rogue.pack.next_object;
 252         while (obj) {
 253                 if (obj->ichar >= 'a' && obj->ichar <= 'z') {
 254                         ichars[(obj->ichar - 'a')] = 1;
 255                 }
 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 void
 267 wait_for_ack(void)
 268 {
 269         while (rgetchar() != ' ')
 270                 ;
 271 }
 272
 273 short
 274 pack_letter(const char *prompt, unsigned short mask)
 275 {
 276         short ch;
 277         unsigned short tmask = mask;
 278
 279         if (!mask_pack(&rogue.pack, mask)) {
 280                 messagef(0, "nothing appropriate");
 281                 return(CANCEL);
 282         }
 283         for (;;) {
 284
 285                 messagef(0, "%s", prompt);
 286
 287                 for (;;) {
 288                         ch = rgetchar();
 289                         if (!is_pack_letter(&ch, &mask)) {
 290                                 sound_bell();
 291                         } else {
 292                                 break;
 293                         }
 294                 }
 295
 296                 if (ch == LIST) {
 297                         check_message();
 298                         mask = tmask;
 299                         inventory(&rogue.pack, mask);
 300                 } else {
 301                         break;
 302                 }
 303                 mask = tmask;
 304         }
 305         check_message();
 306         return(ch);
 307 }
 308
 309 void
 310 take_off(void)
 311 {
 312         char desc[DCOLS];
 313         object *obj;
 314
 315         if (rogue.armor) {
 316                 if (rogue.armor->is_cursed) {
 317                         messagef(0, "%s", curse_message);
 318                 } else {
 319                         mv_aquatars();
 320                         obj = rogue.armor;
 321                         unwear(rogue.armor);
 322                         get_desc(obj, desc, sizeof(desc));
 323                         messagef(0, "was wearing %s", desc);
 324                         print_stats(STAT_ARMOR);
 325                         (void)reg_move();
 326                 }
 327         } else {
 328                 messagef(0, "not wearing any");
 329         }
 330 }
 331
 332 void
 333 wear(void)
 334 {
 335         short ch;
 336         object *obj;
 337         char desc[DCOLS];
 338
 339         if (rogue.armor) {
 340                 messagef(0, "you're already wearing some");
 341                 return;
 342         }
 343         ch = pack_letter("wear what?", ARMOR);
 344
 345         if (ch == CANCEL) {
 346                 return;
 347         }
 348         if (!(obj = get_letter_object(ch))) {
 349                 messagef(0, "no such item.");
 350                 return;
 351         }
 352         if (obj->what_is != ARMOR) {
 353                 messagef(0, "you can't wear that");
 354                 return;
 355         }
 356         obj->identified = 1;
 357         get_desc(obj, desc, sizeof(desc));
 358         messagef(0, "wearing %s", desc);
 359         do_wear(obj);
 360         print_stats(STAT_ARMOR);
 361         (void)reg_move();
 362 }
 363
 364 void
 365 unwear(object *obj)
 366 {
 367         if (obj) {
 368                 obj->in_use_flags &= (~BEING_WORN);
 369         }
 370         rogue.armor = NULL;
 371 }
 372
 373 void
 374 do_wear(object *obj)
 375 {
 376         rogue.armor = obj;
 377         obj->in_use_flags |= BEING_WORN;
 378         obj->identified = 1;
 379 }
 380
 381 void
 382 wield(void)
 383 {
 384         short ch;
 385         object *obj;
 386         char desc[DCOLS];
 387
 388         if (rogue.weapon && rogue.weapon->is_cursed) {
 389                 messagef(0, "%s", curse_message);
 390                 return;
 391         }
 392         ch = pack_letter("wield what?", WEAPON);
 393
 394         if (ch == CANCEL) {
 395                 return;
 396         }
 397         if (!(obj = get_letter_object(ch))) {
 398                 messagef(0, "No such item.");
 399                 return;
 400         }
 401         if (obj->what_is & (ARMOR | RING)) {
 402                 messagef(0, "you can't wield %s",
 403                         ((obj->what_is == ARMOR) ? "armor" : "rings"));
 404                 return;
 405         }
 406         if (obj->in_use_flags & BEING_WIELDED) {
 407                 messagef(0, "in use");
 408         } else {
 409                 unwield(rogue.weapon);
 410                 get_desc(obj, desc, sizeof(desc));
 411                 messagef(0, "wielding %s", desc);
 412                 do_wield(obj);
 413                 (void)reg_move();
 414         }
 415 }
 416
 417 void
 418 do_wield(object *obj)
 419 {
 420         rogue.weapon = obj;
 421         obj->in_use_flags |= BEING_WIELDED;
 422 }
 423
 424 void
 425 unwield(object *obj)
 426 {
 427         if (obj) {
 428                 obj->in_use_flags &= (~BEING_WIELDED);
 429         }
 430         rogue.weapon = NULL;
 431 }
 432
 433 void
 434 call_it(void)
 435 {
 436         short ch;
 437         object *obj;
 438         struct id *id_table;
 439         char buf[MAX_TITLE_LENGTH+2];
 440
 441         ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
 442
 443         if (ch == CANCEL) {
 444                 return;
 445         }
 446         if (!(obj = get_letter_object(ch))) {
 447                 messagef(0, "no such item.");
 448                 return;
 449         }
 450         if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
 451                 messagef(0, "surely you already know what that's called");
 452                 return;
 453         }
 454         id_table = get_id_table(obj);
 455
 456         if (get_input_line("call it:", "", buf, sizeof(buf),
 457                         id_table[obj->which_kind].title, 1, 1)) {
 458                 id_table[obj->which_kind].id_status = CALLED;
 459                 (void)strlcpy(id_table[obj->which_kind].title, buf,
 460                                 sizeof(id_table[obj->which_kind].title));
 461         }
 462 }
 463
 464 short
 465 pack_count(const object *new_obj)
 466 {
 467         object *obj;
 468         short count = 0;
 469
 470         obj = rogue.pack.next_object;
 471
 472         while (obj) {
 473                 if (obj->what_is != WEAPON) {
 474                         count += obj->quantity;
 475                 } else if (!new_obj) {
 476                         count++;
 477                 } else if ((new_obj->what_is != WEAPON) ||
 478                         ((obj->which_kind != ARROW) &&
 479                         (obj->which_kind != DAGGER) &&
 480                         (obj->which_kind != DART) &&
 481                         (obj->which_kind != SHURIKEN)) ||
 482                         (new_obj->which_kind != obj->which_kind) ||
 483                         (obj->quiver != new_obj->quiver)) {
 484                         count++;
 485                 }
 486                 obj = obj->next_object;
 487         }
 488         return(count);
 489 }
 490
 491 boolean
 492 mask_pack(const object *pack, unsigned short mask)
 493 {
 494         while (pack->next_object) {
 495                 pack = pack->next_object;
 496                 if (pack->what_is & mask) {
 497                         return(1);
 498                 }
 499         }
 500         return(0);
 501 }
 502
 503 boolean
 504 is_pack_letter(short *c, unsigned short *mask)
 505 {
 506         if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
 507                 (*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
 508                 switch(*c) {
 509                 case '?':
 510                         *mask = SCROL;
 511                         break;
 512                 case '!':
 513                         *mask = POTION;
 514                         break;
 515                 case ':':
 516                         *mask = FOOD;
 517                         break;
 518                 case ')':
 519                         *mask = WEAPON;
 520                         break;
 521                 case ']':
 522                         *mask = ARMOR;
 523                         break;
 524                 case '/':
 525                         *mask = WAND;
 526                         break;
 527                 case '=':
 528                         *mask = RING;
 529                         break;
 530                 case ',':
 531                         *mask = AMULET;
 532                         break;
 533                 }
 534                 *c = LIST;
 535                 return(1);
 536         }
 537         return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
 538 }
 539
 540 boolean
 541 has_amulet(void)
 542 {
 543         return(mask_pack(&rogue.pack, AMULET));
 544 }
 545
 546 void
 547 kick_into_pack(void)
 548 {
 549         object *obj;
 550         char desc[DCOLS];
 551         short stat;
 552
 553         if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
 554                 messagef(0, "nothing here");
 555         } else {
 556                 if ((obj = pick_up(rogue.row, rogue.col, &stat)) != NULL) {
 557                         get_desc(obj, desc, sizeof(desc));
 558                         if (obj->what_is == GOLD) {
 559                                 messagef(0, "%s", desc);
 560                                 free_object(obj);
 561                         } else {
 562                                 messagef(0, "%s(%c)", desc, obj->ichar);
 563                         }
 564                 }
 565                 if (obj || (!stat)) {
 566                         (void)reg_move();
 567                 }
 568         }
 569 }