games/rogue/pack.c

   1 /*
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  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  * @(#)pack.c   8.1 (Berkeley) 5/31/93
  37  * $FreeBSD: src/games/rogue/pack.c,v 1.8 1999/11/30 03:49:25 billf Exp $
  38  * $DragonFly: src/games/rogue/pack.c,v 1.3 2003/08/26 23:52:50 drhodus Exp $
  39  */
  40
  41 /*
  42  * pack.c
  43  *
  44  * This source herein may be modified and/or distributed by anybody who
  45  * so desires, with the following restrictions:
  46  *    1.)  No portion of this notice shall be removed.
  47  *    2.)  Credit shall not be taken for the creation of this source.
  48  *    3.)  This code is not to be traded, sold, or used for personal
  49  *         gain or profit.
  50  *
  51  */
  52
  53 #include "rogue.h"
  54
  55 const char *curse_message = "you can't, it appears to be cursed";
  56
  57 extern short levitate;
  58
  59 object *
  60 add_to_pack(obj, pack, condense)
  61 object *obj, *pack;
  62 int condense;
  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 int row, col;
 104 short *status;
 105 {
 106         object *obj;
 107
 108         *status = 1;
 109
 110         if (levitate) {
 111                 message("you're floating in the air!", 0);
 112                 return((object *) 0);
 113         }
 114         obj = object_at(&level_objects, row, col);
 115         if (!obj) {
 116                 message("pick_up(): inconsistent", 1);
 117                 return(obj);
 118         }
 119         if (    (obj->what_is == SCROL) &&
 120                         (obj->which_kind == SCARE_MONSTER) &&
 121                         obj->picked_up) {
 122                 message("the scroll turns to dust as you pick it up", 0);
 123                 dungeon[row][col] &= (~OBJECT);
 124                 vanish(obj, 0, &level_objects);
 125                 *status = 0;
 126                 if (id_scrolls[SCARE_MONSTER].id_status == UNIDENTIFIED) {
 127                         id_scrolls[SCARE_MONSTER].id_status = IDENTIFIED;
 128                 }
 129                 return((object *) 0);
 130         }
 131         if (obj->what_is == GOLD) {
 132                 rogue.gold += obj->quantity;
 133                 dungeon[row][col] &= ~(OBJECT);
 134                 take_from_pack(obj, &level_objects);
 135                 print_stats(STAT_GOLD);
 136                 return(obj);    /* obj will be free_object()ed in caller */
 137         }
 138         if (pack_count(obj) >= MAX_PACK_COUNT) {
 139                 message("pack too full", 1);
 140                 return((object *) 0);
 141         }
 142         dungeon[row][col] &= ~(OBJECT);
 143         take_from_pack(obj, &level_objects);
 144         obj = add_to_pack(obj, &rogue.pack, 1);
 145         obj->picked_up = 1;
 146         return(obj);
 147 }
 148
 149 drop()
 150 {
 151         object *obj, *new;
 152         short ch;
 153         char desc[DCOLS];
 154
 155         if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
 156                 message("there's already something there", 0);
 157                 return;
 158         }
 159         if (!rogue.pack.next_object) {
 160                 message("you have nothing to drop", 0);
 161                 return;
 162         }
 163         if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
 164                 return;
 165         }
 166         if (!(obj = get_letter_object(ch))) {
 167                 message("no such item.", 0);
 168                 return;
 169         }
 170         if (obj->in_use_flags & BEING_WIELDED) {
 171                 if (obj->is_cursed) {
 172                         message(curse_message, 0);
 173                         return;
 174                 }
 175                 unwield(rogue.weapon);
 176         } else if (obj->in_use_flags & BEING_WORN) {
 177                 if (obj->is_cursed) {
 178                         message(curse_message, 0);
 179                         return;
 180                 }
 181                 mv_aquatars();
 182                 unwear(rogue.armor);
 183                 print_stats(STAT_ARMOR);
 184         } else if (obj->in_use_flags & ON_EITHER_HAND) {
 185                 if (obj->is_cursed) {
 186                         message(curse_message, 0);
 187                         return;
 188                 }
 189                 un_put_on(obj);
 190         }
 191         obj->row = rogue.row;
 192         obj->col = rogue.col;
 193
 194         if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
 195                 obj->quantity--;
 196                 new = alloc_object();
 197                 *new = *obj;
 198                 new->quantity = 1;
 199                 obj = new;
 200         } else {
 201                 obj->ichar = 'L';
 202                 take_from_pack(obj, &rogue.pack);
 203         }
 204         place_at(obj, rogue.row, rogue.col);
 205         (void) strcpy(desc, "dropped ");
 206         get_desc(obj, desc+8);
 207         message(desc, 0);
 208         (void) reg_move();
 209 }
 210
 211 object *
 212 check_duplicate(obj, pack)
 213 object *obj, *pack;
 214 {
 215         object *op;
 216
 217         if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
 218                 return(0);
 219         }
 220         if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
 221                 return(0);
 222         }
 223         op = pack->next_object;
 224
 225         while (op) {
 226                 if ((op->what_is == obj->what_is) &&
 227                         (op->which_kind == obj->which_kind)) {
 228
 229                         if ((obj->what_is != WEAPON) ||
 230                         ((obj->what_is == WEAPON) &&
 231                         ((obj->which_kind == ARROW) ||
 232                         (obj->which_kind == DAGGER) ||
 233                         (obj->which_kind == DART) ||
 234                         (obj->which_kind == SHURIKEN)) &&
 235                         (obj->quiver == op->quiver))) {
 236                                 op->quantity += obj->quantity;
 237                                 return(op);
 238                         }
 239                 }
 240                 op = op->next_object;
 241         }
 242         return(0);
 243 }
 244
 245 next_avail_ichar()
 246 {
 247         object *obj;
 248         int i;
 249         boolean ichars[26];
 250
 251         for (i = 0; i < 26; i++) {
 252                 ichars[i] = 0;
 253         }
 254         obj = rogue.pack.next_object;
 255         while (obj) {
 256                 ichars[(obj->ichar - 'a')] = 1;
 257                 obj = obj->next_object;
 258         }
 259         for (i = 0; i < 26; i++) {
 260                 if (!ichars[i]) {
 261                         return(i + 'a');
 262                 }
 263         }
 264         return('?');
 265 }
 266
 267 wait_for_ack()
 268 {
 269         if (!isatty(0) || !isatty(1))
 270             return;
 271         while (rgetchar() != ' ') ;
 272 }
 273
 274 pack_letter(prompt, mask)
 275 const char *prompt;
 276 unsigned short mask;
 277 {
 278         short ch;
 279         unsigned short tmask = mask;
 280
 281         if (!mask_pack(&rogue.pack, mask)) {
 282                 message("nothing appropriate", 0);
 283                 return(CANCEL);
 284         }
 285         for (;;) {
 286
 287                 message(prompt, 0);
 288
 289                 for (;;) {
 290                         ch = rgetchar();
 291                         if (!is_pack_letter(&ch, &mask)) {
 292                                 sound_bell();
 293                         } else {
 294                                 break;
 295                         }
 296                 }
 297
 298                 if (ch == LIST) {
 299                         check_message();
 300                         mask = tmask;
 301                         inventory(&rogue.pack, mask);
 302                 } else {
 303                         break;
 304                 }
 305                 mask = tmask;
 306         }
 307         check_message();
 308         return(ch);
 309 }
 310
 311 take_off()
 312 {
 313         char desc[DCOLS];
 314         object *obj;
 315
 316         if (rogue.armor) {
 317                 if (rogue.armor->is_cursed) {
 318                         message(curse_message, 0);
 319                 } else {
 320                         mv_aquatars();
 321                         obj = rogue.armor;
 322                         unwear(rogue.armor);
 323                         (void) strcpy(desc, "was wearing ");
 324                         get_desc(obj, desc+12);
 325                         message(desc, 0);
 326                         print_stats(STAT_ARMOR);
 327                         (void) reg_move();
 328                 }
 329         } else {
 330                 message("not wearing any", 0);
 331         }
 332 }
 333
 334 wear()
 335 {
 336         short ch;
 337         object *obj;
 338         char desc[DCOLS];
 339
 340         if (rogue.armor) {
 341                 message("you're already wearing some", 0);
 342                 return;
 343         }
 344         ch = pack_letter("wear what?", ARMOR);
 345
 346         if (ch == CANCEL) {
 347                 return;
 348         }
 349         if (!(obj = get_letter_object(ch))) {
 350                 message("no such item.", 0);
 351                 return;
 352         }
 353         if (obj->what_is != ARMOR) {
 354                 message("you can't wear that", 0);
 355                 return;
 356         }
 357         obj->identified = 1;
 358         (void) strcpy(desc, "wearing ");
 359         get_desc(obj, desc + 8);
 360         message(desc, 0);
 361         do_wear(obj);
 362         print_stats(STAT_ARMOR);
 363         (void) reg_move();
 364 }
 365
 366 unwear(obj)
 367 object *obj;
 368 {
 369         if (obj) {
 370                 obj->in_use_flags &= (~BEING_WORN);
 371         }
 372         rogue.armor = (object *) 0;
 373 }
 374
 375 do_wear(obj)
 376 object *obj;
 377 {
 378         rogue.armor = obj;
 379         obj->in_use_flags |= BEING_WORN;
 380         obj->identified = 1;
 381 }
 382
 383 wield()
 384 {
 385         short ch;
 386         object *obj;
 387         char desc[DCOLS];
 388
 389         if (rogue.weapon && rogue.weapon->is_cursed) {
 390                 message(curse_message, 0);
 391                 return;
 392         }
 393         ch = pack_letter("wield what?", WEAPON);
 394
 395         if (ch == CANCEL) {
 396                 return;
 397         }
 398         if (!(obj = get_letter_object(ch))) {
 399                 message("No such item.", 0);
 400                 return;
 401         }
 402         if (obj->what_is & (ARMOR | RING)) {
 403                 sprintf(desc, "you can't wield %s",
 404                         ((obj->what_is == ARMOR) ? "armor" : "rings"));
 405                 message(desc, 0);
 406                 return;
 407         }
 408         if (obj->in_use_flags & BEING_WIELDED) {
 409                 message("in use", 0);
 410         } else {
 411                 unwield(rogue.weapon);
 412                 (void) strcpy(desc, "wielding ");
 413                 get_desc(obj, desc + 9);
 414                 message(desc, 0);
 415                 do_wield(obj);
 416                 (void) reg_move();
 417         }
 418 }
 419
 420 do_wield(obj)
 421 object *obj;
 422 {
 423         rogue.weapon = obj;
 424         obj->in_use_flags |= BEING_WIELDED;
 425 }
 426
 427 unwield(obj)
 428 object *obj;
 429 {
 430         if (obj) {
 431                 obj->in_use_flags &= (~BEING_WIELDED);
 432         }
 433         rogue.weapon = (object *) 0;
 434 }
 435
 436 call_it()
 437 {
 438         short ch;
 439         object *obj;
 440         struct id *id_table;
 441         char buf[MAX_TITLE_LENGTH+2];
 442
 443         ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
 444
 445         if (ch == CANCEL) {
 446                 return;
 447         }
 448         if (!(obj = get_letter_object(ch))) {
 449                 message("no such item.", 0);
 450                 return;
 451         }
 452         if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
 453                 message("surely you already know what that's called", 0);
 454                 return;
 455         }
 456         id_table = get_id_table(obj);
 457
 458         if (get_input_line("call it:","",buf,id_table[obj->which_kind].title,1,1)) {
 459                 id_table[obj->which_kind].id_status = CALLED;
 460                 (void) strcpy(id_table[obj->which_kind].title, buf);
 461         }
 462 }
 463
 464 pack_count(new_obj)
 465 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(pack, mask)
 493 const object *pack;
 494 unsigned short mask;
 495 {
 496         while (pack->next_object) {
 497                 pack = pack->next_object;
 498                 if (pack->what_is & mask) {
 499                         return(1);
 500                 }
 501         }
 502         return(0);
 503 }
 504
 505 is_pack_letter(c, mask)
 506 short *c;
 507 unsigned short *mask;
 508 {
 509         if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
 510                 (*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
 511                 switch(*c) {
 512                 case '?':
 513                         *mask = SCROL;
 514                         break;
 515                 case '!':
 516                         *mask = POTION;
 517                         break;
 518                 case ':':
 519                         *mask = FOOD;
 520                         break;
 521                 case ')':
 522                         *mask = WEAPON;
 523                         break;
 524                 case ']':
 525                         *mask = ARMOR;
 526                         break;
 527                 case '/':
 528                         *mask = WAND;
 529                         break;
 530                 case '=':
 531                         *mask = RING;
 532                         break;
 533                 case ',':
 534                         *mask = AMULET;
 535                         break;
 536                 }
 537                 *c = LIST;
 538                 return(1);
 539         }
 540         return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
 541 }
 542
 543 has_amulet()
 544 {
 545         return(mask_pack(&rogue.pack, AMULET));
 546 }
 547
 548 kick_into_pack()
 549 {
 550         object *obj;
 551         char desc[DCOLS];
 552         short n, stat;
 553
 554         if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
 555                 message("nothing here", 0);
 556         } else {
 557                 if (obj = pick_up(rogue.row, rogue.col, &stat)) {
 558                         get_desc(obj, desc);
 559                         if (obj->what_is == GOLD) {
 560                                 message(desc, 0);
 561                                 free_object(obj);
 562                         } else {
 563                                 n = strlen(desc);
 564                                 desc[n] = '(';
 565                                 desc[n+1] = obj->ichar;
 566                                 desc[n+2] = ')';
 567                                 desc[n+3] = 0;
 568                                 message(desc, 0);
 569                         }
 570                 }
 571                 if (obj || (!stat)) {
 572                         (void) reg_move();
 573                 }
 574         }
 575 }