rogue/pack.c

   1 /*      $NetBSD: pack.c,v 1.9 2008/01/14 00:23:52 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 1.9 2008/01/14 00:23:52 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
 279 short
 280 pack_letter(prompt, mask)
 281         const char *prompt;
 282         unsigned short mask;
 283 {
 284         short ch;
 285         unsigned short tmask = mask;
 286
 287         if (!mask_pack(&rogue.pack, mask)) {
 288                 messagef(0, "nothing appropriate");
 289                 return(CANCEL);
 290         }
 291         for (;;) {
 292
 293                 messagef(0, "%s", prompt);
 294
 295                 for (;;) {
 296                         ch = rgetchar();
 297                         if (!is_pack_letter(&ch, &mask)) {
 298                                 sound_bell();
 299                         } else {
 300                                 break;
 301                         }
 302                 }
 303
 304                 if (ch == LIST) {
 305                         check_message();
 306                         mask = tmask;
 307                         inventory(&rogue.pack, mask);
 308                 } else {
 309                         break;
 310                 }
 311                 mask = tmask;
 312         }
 313         check_message();
 314         return(ch);
 315 }
 316
 317 void
 318 take_off()
 319 {
 320         char desc[DCOLS];
 321         object *obj;
 322
 323         if (rogue.armor) {
 324                 if (rogue.armor->is_cursed) {
 325                         messagef(0, "%s", curse_message);
 326                 } else {
 327                         mv_aquatars();
 328                         obj = rogue.armor;
 329                         unwear(rogue.armor);
 330                         get_desc(obj, desc, sizeof(desc));
 331                         messagef(0, "was wearing %s", desc);
 332                         print_stats(STAT_ARMOR);
 333                         (void)reg_move();
 334                 }
 335         } else {
 336                 messagef(0, "not wearing any");
 337         }
 338 }
 339
 340 void
 341 wear()
 342 {
 343         short ch;
 344         object *obj;
 345         char desc[DCOLS];
 346
 347         if (rogue.armor) {
 348                 messagef(0, "you're already wearing some");
 349                 return;
 350         }
 351         ch = pack_letter("wear what?", ARMOR);
 352
 353         if (ch == CANCEL) {
 354                 return;
 355         }
 356         if (!(obj = get_letter_object(ch))) {
 357                 messagef(0, "no such item.");
 358                 return;
 359         }
 360         if (obj->what_is != ARMOR) {
 361                 messagef(0, "you can't wear that");
 362                 return;
 363         }
 364         obj->identified = 1;
 365         get_desc(obj, desc, sizeof(desc));
 366         messagef(0, "wearing %s", desc);
 367         do_wear(obj);
 368         print_stats(STAT_ARMOR);
 369         (void)reg_move();
 370 }
 371
 372 void
 373 unwear(obj)
 374         object *obj;
 375 {
 376         if (obj) {
 377                 obj->in_use_flags &= (~BEING_WORN);
 378         }
 379         rogue.armor = (object *)0;
 380 }
 381
 382 void
 383 do_wear(obj)
 384         object *obj;
 385 {
 386         rogue.armor = obj;
 387         obj->in_use_flags |= BEING_WORN;
 388         obj->identified = 1;
 389 }
 390
 391 void
 392 wield()
 393 {
 394         short ch;
 395         object *obj;
 396         char desc[DCOLS];
 397
 398         if (rogue.weapon && rogue.weapon->is_cursed) {
 399                 messagef(0, "%s", curse_message);
 400                 return;
 401         }
 402         ch = pack_letter("wield what?", WEAPON);
 403
 404         if (ch == CANCEL) {
 405                 return;
 406         }
 407         if (!(obj = get_letter_object(ch))) {
 408                 messagef(0, "No such item.");
 409                 return;
 410         }
 411         if (obj->what_is & (ARMOR | RING)) {
 412                 messagef(0, "you can't wield %s",
 413                         ((obj->what_is == ARMOR) ? "armor" : "rings"));
 414                 return;
 415         }
 416         if (obj->in_use_flags & BEING_WIELDED) {
 417                 messagef(0, "in use");
 418         } else {
 419                 unwield(rogue.weapon);
 420                 get_desc(obj, desc, sizeof(desc));
 421                 messagef(0, "wielding %s", desc);
 422                 do_wield(obj);
 423                 (void)reg_move();
 424         }
 425 }
 426
 427 void
 428 do_wield(obj)
 429         object *obj;
 430 {
 431         rogue.weapon = obj;
 432         obj->in_use_flags |= BEING_WIELDED;
 433 }
 434
 435 void
 436 unwield(obj)
 437         object *obj;
 438 {
 439         if (obj) {
 440                 obj->in_use_flags &= (~BEING_WIELDED);
 441         }
 442         rogue.weapon = (object *)0;
 443 }
 444
 445 void
 446 call_it()
 447 {
 448         short ch;
 449         object *obj;
 450         struct id *id_table;
 451         char buf[MAX_TITLE_LENGTH+2];
 452
 453         ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
 454
 455         if (ch == CANCEL) {
 456                 return;
 457         }
 458         if (!(obj = get_letter_object(ch))) {
 459                 messagef(0, "no such item.");
 460                 return;
 461         }
 462         if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
 463                 messagef(0, "surely you already know what that's called");
 464                 return;
 465         }
 466         id_table = get_id_table(obj);
 467
 468         if (get_input_line("call it:", "", buf, sizeof(buf),
 469                         id_table[obj->which_kind].title, 1, 1)) {
 470                 id_table[obj->which_kind].id_status = CALLED;
 471                 (void)strlcpy(id_table[obj->which_kind].title, buf,
 472                                 sizeof(id_table[obj->which_kind].title));
 473         }
 474 }
 475
 476 short
 477 pack_count(new_obj)
 478         const object *new_obj;
 479 {
 480         object *obj;
 481         short count = 0;
 482
 483         obj = rogue.pack.next_object;
 484
 485         while (obj) {
 486                 if (obj->what_is != WEAPON) {
 487                         count += obj->quantity;
 488                 } else if (!new_obj) {
 489                         count++;
 490                 } else if ((new_obj->what_is != WEAPON) ||
 491                         ((obj->which_kind != ARROW) &&
 492                         (obj->which_kind != DAGGER) &&
 493                         (obj->which_kind != DART) &&
 494                         (obj->which_kind != SHURIKEN)) ||
 495                         (new_obj->which_kind != obj->which_kind) ||
 496                         (obj->quiver != new_obj->quiver)) {
 497                         count++;
 498                 }
 499                 obj = obj->next_object;
 500         }
 501         return(count);
 502 }
 503
 504 boolean
 505 mask_pack(pack, mask)
 506         const object *pack;
 507         unsigned short mask;
 508 {
 509         while (pack->next_object) {
 510                 pack = pack->next_object;
 511                 if (pack->what_is & mask) {
 512                         return(1);
 513                 }
 514         }
 515         return(0);
 516 }
 517
 518 boolean
 519 is_pack_letter(c, mask)
 520         short *c;
 521         unsigned short *mask;
 522 {
 523         if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
 524                 (*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
 525                 switch(*c) {
 526                 case '?':
 527                         *mask = SCROL;
 528                         break;
 529                 case '!':
 530                         *mask = POTION;
 531                         break;
 532                 case ':':
 533                         *mask = FOOD;
 534                         break;
 535                 case ')':
 536                         *mask = WEAPON;
 537                         break;
 538                 case ']':
 539                         *mask = ARMOR;
 540                         break;
 541                 case '/':
 542                         *mask = WAND;
 543                         break;
 544                 case '=':
 545                         *mask = RING;
 546                         break;
 547                 case ',':
 548                         *mask = AMULET;
 549                         break;
 550                 }
 551                 *c = LIST;
 552                 return(1);
 553         }
 554         return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
 555 }
 556
 557 boolean
 558 has_amulet()
 559 {
 560         return(mask_pack(&rogue.pack, AMULET));
 561 }
 562
 563 void
 564 kick_into_pack()
 565 {
 566         object *obj;
 567         char desc[DCOLS];
 568         short stat;
 569
 570         if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
 571                 messagef(0, "nothing here");
 572         } else {
 573                 if ((obj = pick_up(rogue.row, rogue.col, &stat)) != NULL) {
 574                         get_desc(obj, desc, sizeof(desc));
 575                         if (obj->what_is == GOLD) {
 576                                 messagef(0, "%s", desc);
 577                                 free_object(obj);
 578                         } else {
 579                                 messagef(0, "%s(%c)", desc, obj->ichar);
 580                         }
 581                 }
 582                 if (obj || (!stat)) {
 583                         (void)reg_move();
 584                 }
 585         }
 586 }