rogue/pack.c

   1 /*      $NetBSD: pack.c,v 1.7 2003/08/07 09:37:39 agc 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 1.7 2003/08/07 09:37:39 agc 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                 message("you're floating in the air!", 0);
 114                 return((object *) 0);
 115         }
 116         obj = object_at(&level_objects, row, col);
 117         if (!obj) {
 118                 message("pick_up(): inconsistent", 1);
 119                 return(obj);
 120         }
 121         if (    (obj->what_is == SCROL) &&
 122                         (obj->which_kind == SCARE_MONSTER) &&
 123                         obj->picked_up) {
 124                 message("the scroll turns to dust as you pick it up", 0);
 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                 message("pack too full", 1);
 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                 message("there's already something there", 0);
 160                 return;
 161         }
 162         if (!rogue.pack.next_object) {
 163                 message("you have nothing to drop", 0);
 164                 return;
 165         }
 166         if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
 167                 return;
 168         }
 169         if (!(obj = get_letter_object(ch))) {
 170                 message("no such item.", 0);
 171                 return;
 172         }
 173         if (obj->in_use_flags & BEING_WIELDED) {
 174                 if (obj->is_cursed) {
 175                         message(curse_message, 0);
 176                         return;
 177                 }
 178                 unwield(rogue.weapon);
 179         } else if (obj->in_use_flags & BEING_WORN) {
 180                 if (obj->is_cursed) {
 181                         message(curse_message, 0);
 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                         message(curse_message, 0);
 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         (void) strcpy(desc, "dropped ");
 209         get_desc(obj, desc+8);
 210         message(desc, 0);
 211         (void) reg_move();
 212 }
 213
 214 object *
 215 check_duplicate(obj, pack)
 216         object *obj, *pack;
 217 {
 218         object *op;
 219
 220         if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
 221                 return(0);
 222         }
 223         if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
 224                 return(0);
 225         }
 226         op = pack->next_object;
 227
 228         while (op) {
 229                 if ((op->what_is == obj->what_is) &&
 230                         (op->which_kind == obj->which_kind)) {
 231
 232                         if ((obj->what_is != WEAPON) ||
 233                         ((obj->what_is == WEAPON) &&
 234                         ((obj->which_kind == ARROW) ||
 235                         (obj->which_kind == DAGGER) ||
 236                         (obj->which_kind == DART) ||
 237                         (obj->which_kind == SHURIKEN)) &&
 238                         (obj->quiver == op->quiver))) {
 239                                 op->quantity += obj->quantity;
 240                                 return(op);
 241                         }
 242                 }
 243                 op = op->next_object;
 244         }
 245         return(0);
 246 }
 247
 248 short
 249 next_avail_ichar()
 250 {
 251         object *obj;
 252         int i;
 253         boolean ichars[26];
 254
 255         for (i = 0; i < 26; i++) {
 256                 ichars[i] = 0;
 257         }
 258         obj = rogue.pack.next_object;
 259         while (obj) {
 260                 ichars[(obj->ichar - 'a')] = 1;
 261                 obj = obj->next_object;
 262         }
 263         for (i = 0; i < 26; i++) {
 264                 if (!ichars[i]) {
 265                         return(i + 'a');
 266                 }
 267         }
 268         return('?');
 269 }
 270
 271 void
 272 wait_for_ack()
 273 {
 274         while (rgetchar() != ' ') ;
 275 }
 276
 277 short
 278 pack_letter(prompt, mask)
 279         const char *prompt;
 280         unsigned short mask;
 281 {
 282         short ch;
 283         unsigned short tmask = mask;
 284
 285         if (!mask_pack(&rogue.pack, mask)) {
 286                 message("nothing appropriate", 0);
 287                 return(CANCEL);
 288         }
 289         for (;;) {
 290
 291                 message(prompt, 0);
 292
 293                 for (;;) {
 294                         ch = rgetchar();
 295                         if (!is_pack_letter(&ch, &mask)) {
 296                                 sound_bell();
 297                         } else {
 298                                 break;
 299                         }
 300                 }
 301
 302                 if (ch == LIST) {
 303                         check_message();
 304                         mask = tmask;
 305                         inventory(&rogue.pack, mask);
 306                 } else {
 307                         break;
 308                 }
 309                 mask = tmask;
 310         }
 311         check_message();
 312         return(ch);
 313 }
 314
 315 void
 316 take_off()
 317 {
 318         char desc[DCOLS];
 319         object *obj;
 320
 321         if (rogue.armor) {
 322                 if (rogue.armor->is_cursed) {
 323                         message(curse_message, 0);
 324                 } else {
 325                         mv_aquatars();
 326                         obj = rogue.armor;
 327                         unwear(rogue.armor);
 328                         (void) strcpy(desc, "was wearing ");
 329                         get_desc(obj, desc+12);
 330                         message(desc, 0);
 331                         print_stats(STAT_ARMOR);
 332                         (void) reg_move();
 333                 }
 334         } else {
 335                 message("not wearing any", 0);
 336         }
 337 }
 338
 339 void
 340 wear()
 341 {
 342         short ch;
 343         object *obj;
 344         char desc[DCOLS];
 345
 346         if (rogue.armor) {
 347                 message("your already wearing some", 0);
 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                 message("no such item.", 0);
 357                 return;
 358         }
 359         if (obj->what_is != ARMOR) {
 360                 message("you can't wear that", 0);
 361                 return;
 362         }
 363         obj->identified = 1;
 364         (void) strcpy(desc, "wearing ");
 365         get_desc(obj, desc + 8);
 366         message(desc, 0);
 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                 message(curse_message, 0);
 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                 message("No such item.", 0);
 409                 return;
 410         }
 411         if (obj->what_is & (ARMOR | RING)) {
 412                 sprintf(desc, "you can't wield %s",
 413                         ((obj->what_is == ARMOR) ? "armor" : "rings"));
 414                 message(desc, 0);
 415                 return;
 416         }
 417         if (obj->in_use_flags & BEING_WIELDED) {
 418                 message("in use", 0);
 419         } else {
 420                 unwield(rogue.weapon);
 421                 (void) strcpy(desc, "wielding ");
 422                 get_desc(obj, desc + 9);
 423                 message(desc, 0);
 424                 do_wield(obj);
 425                 (void) reg_move();
 426         }
 427 }
 428
 429 void
 430 do_wield(obj)
 431         object *obj;
 432 {
 433         rogue.weapon = obj;
 434         obj->in_use_flags |= BEING_WIELDED;
 435 }
 436
 437 void
 438 unwield(obj)
 439         object *obj;
 440 {
 441         if (obj) {
 442                 obj->in_use_flags &= (~BEING_WIELDED);
 443         }
 444         rogue.weapon = (object *) 0;
 445 }
 446
 447 void
 448 call_it()
 449 {
 450         short ch;
 451         object *obj;
 452         struct id *id_table;
 453         char buf[MAX_TITLE_LENGTH+2];
 454
 455         ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
 456
 457         if (ch == CANCEL) {
 458                 return;
 459         }
 460         if (!(obj = get_letter_object(ch))) {
 461                 message("no such item.", 0);
 462                 return;
 463         }
 464         if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
 465                 message("surely you already know what that's called", 0);
 466                 return;
 467         }
 468         id_table = get_id_table(obj);
 469
 470         if (get_input_line("call it:","",buf,id_table[obj->which_kind].title,1,1)) {
 471                 id_table[obj->which_kind].id_status = CALLED;
 472                 (void) strcpy(id_table[obj->which_kind].title, buf);
 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 n, stat;
 569
 570         if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
 571                 message("nothing here", 0);
 572         } else {
 573                 if ((obj = pick_up(rogue.row, rogue.col, &stat)) != NULL) {
 574                         get_desc(obj, desc);
 575                         if (obj->what_is == GOLD) {
 576                                 message(desc, 0);
 577                                 free_object(obj);
 578                         } else {
 579                                 n = strlen(desc);
 580                                 desc[n] = '(';
 581                                 desc[n+1] = obj->ichar;
 582                                 desc[n+2] = ')';
 583                                 desc[n+3] = 0;
 584                                 message(desc, 0);
 585                         }
 586                 }
 587                 if (obj || (!stat)) {
 588                         (void) reg_move();
 589                 }
 590         }
 591 }