rogue/use.c

   1 /*      $NetBSD: use.c,v 1.5 1998/11/10 13:01:32 hubertf 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. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)use.c       8.1 (Berkeley) 5/31/93";
  43 #else
  44 __RCSID("$NetBSD: use.c,v 1.5 1998/11/10 13:01:32 hubertf Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 /*
  49  * use.c
  50  *
  51  * This source herein may be modified and/or distributed by anybody who
  52  * so desires, with the following restrictions:
  53  *    1.)  No portion of this notice shall be removed.
  54  *    2.)  Credit shall not be taken for the creation of this source.
  55  *    3.)  This code is not to be traded, sold, or used for personal
  56  *         gain or profit.
  57  *
  58  */
  59
  60 #include "rogue.h"
  61
  62 short halluc = 0;
  63 short blind = 0;
  64 short confused = 0;
  65 short levitate = 0;
  66 short haste_self = 0;
  67 boolean see_invisible = 0;
  68 short extra_hp = 0;
  69 boolean detect_monster = 0;
  70 boolean con_mon = 0;
  71 const char *strange_feeling = "you have a strange feeling for a moment, then it passes";
  72
  73 void
  74 quaff()
  75 {
  76         short ch;
  77         char buf[80];
  78         object *obj;
  79
  80         ch = pack_letter("quaff what?", POTION);
  81
  82         if (ch == CANCEL) {
  83                 return;
  84         }
  85         if (!(obj = get_letter_object(ch))) {
  86                 message("no such item.", 0);
  87                 return;
  88         }
  89         if (obj->what_is != POTION) {
  90                 message("you can't drink that", 0);
  91                 return;
  92         }
  93         switch(obj->which_kind) {
  94                 case INCREASE_STRENGTH:
  95                         message("you feel stronger now, what bulging muscles!",
  96                         0);
  97                         rogue.str_current++;
  98                         if (rogue.str_current > rogue.str_max) {
  99                                 rogue.str_max = rogue.str_current;
 100                         }
 101                         break;
 102                 case RESTORE_STRENGTH:
 103                         rogue.str_current = rogue.str_max;
 104                         message("this tastes great, you feel warm all over", 0);
 105                         break;
 106                 case HEALING:
 107                         message("you begin to feel better", 0);
 108                         potion_heal(0);
 109                         break;
 110                 case EXTRA_HEALING:
 111                         message("you begin to feel much better", 0);
 112                         potion_heal(1);
 113                         break;
 114                 case POISON:
 115                         if (!sustain_strength) {
 116                                 rogue.str_current -= get_rand(1, 3);
 117                                 if (rogue.str_current < 1) {
 118                                         rogue.str_current = 1;
 119                                 }
 120                         }
 121                         message("you feel very sick now", 0);
 122                         if (halluc) {
 123                                 unhallucinate();
 124                         }
 125                         break;
 126                 case RAISE_LEVEL:
 127                         rogue.exp_points = level_points[rogue.exp - 1];
 128                         message("you suddenly feel much more skillful", 0);
 129                         add_exp(1, 1);
 130                         break;
 131                 case BLINDNESS:
 132                         go_blind();
 133                         break;
 134                 case HALLUCINATION:
 135                         message("oh wow, everything seems so cosmic", 0);
 136                         halluc += get_rand(500, 800);
 137                         break;
 138                 case DETECT_MONSTER:
 139                         show_monsters();
 140                         if (!(level_monsters.next_monster)) {
 141                                 message(strange_feeling, 0);
 142                         }
 143                         break;
 144                 case DETECT_OBJECTS:
 145                         if (level_objects.next_object) {
 146                                 if (!blind) {
 147                                         show_objects();
 148                                 }
 149                         } else {
 150                                 message(strange_feeling, 0);
 151                         }
 152                         break;
 153                 case CONFUSION:
 154                         message((halluc ? "what a trippy feeling" :
 155                         "you feel confused"), 0);
 156                         cnfs();
 157                         break;
 158                 case LEVITATION:
 159                         message("you start to float in the air", 0);
 160                         levitate += get_rand(15, 30);
 161                         being_held = bear_trap = 0;
 162                         break;
 163                 case HASTE_SELF:
 164                         message("you feel yourself moving much faster", 0);
 165                         haste_self += get_rand(11, 21);
 166                         if (!(haste_self % 2)) {
 167                                 haste_self++;
 168                         }
 169                         break;
 170                 case SEE_INVISIBLE:
 171                         sprintf(buf, "hmm, this potion tastes like %sjuice", fruit);
 172                         message(buf, 0);
 173                         if (blind) {
 174                                 unblind();
 175                         }
 176                         see_invisible = 1;
 177                         relight();
 178                         break;
 179         }
 180         print_stats((STAT_STRENGTH | STAT_HP));
 181         if (id_potions[obj->which_kind].id_status != CALLED) {
 182                 id_potions[obj->which_kind].id_status = IDENTIFIED;
 183         }
 184         vanish(obj, 1, &rogue.pack);
 185 }
 186
 187 void
 188 read_scroll()
 189 {
 190         short ch;
 191         object *obj;
 192         char msg[DCOLS];
 193
 194         ch = pack_letter("read what?", SCROL);
 195
 196         if (ch == CANCEL) {
 197                 return;
 198         }
 199         if (!(obj = get_letter_object(ch))) {
 200                 message("no such item.", 0);
 201                 return;
 202         }
 203         if (obj->what_is != SCROL) {
 204                 message("you can't read that", 0);
 205                 return;
 206         }
 207         switch(obj->which_kind) {
 208                 case SCARE_MONSTER:
 209                         message("you hear a maniacal laughter in the distance",
 210                         0);
 211                         break;
 212                 case HOLD_MONSTER:
 213                         hold_monster();
 214                         break;
 215                 case ENCH_WEAPON:
 216                         if (rogue.weapon) {
 217                                 if (rogue.weapon->what_is == WEAPON) {
 218                                         sprintf(msg, "your %sglow%s %sfor a moment",
 219                                         name_of(rogue.weapon),
 220                                         ((rogue.weapon->quantity <= 1) ? "s" : ""),
 221                                         get_ench_color());
 222                                         message(msg, 0);
 223                                         if (coin_toss()) {
 224                                                 rogue.weapon->hit_enchant++;
 225                                         } else {
 226                                                 rogue.weapon->d_enchant++;
 227                                         }
 228                                 }
 229                                 rogue.weapon->is_cursed = 0;
 230                         } else {
 231                                 message("your hands tingle", 0);
 232                         }
 233                         break;
 234                 case ENCH_ARMOR:
 235                         if (rogue.armor) {
 236                                 sprintf(msg, "your armor glows %sfor a moment",
 237                                 get_ench_color());
 238                                 message(msg, 0);
 239                                 rogue.armor->d_enchant++;
 240                                 rogue.armor->is_cursed = 0;
 241                                 print_stats(STAT_ARMOR);
 242                         } else {
 243                                 message("your skin crawls", 0);
 244                         }
 245                         break;
 246                 case IDENTIFY:
 247                         message("this is a scroll of identify", 0);
 248                         obj->identified = 1;
 249                         id_scrolls[obj->which_kind].id_status = IDENTIFIED;
 250                         idntfy();
 251                         break;
 252                 case TELEPORT:
 253                         tele();
 254                         break;
 255                 case SLEEP:
 256                         message("you fall asleep", 0);
 257                         take_a_nap();
 258                         break;
 259                 case PROTECT_ARMOR:
 260                         if (rogue.armor) {
 261                                 message( "your armor is covered by a shimmering gold shield",0);
 262                                 rogue.armor->is_protected = 1;
 263                                 rogue.armor->is_cursed = 0;
 264                         } else {
 265                                 message("your acne seems to have disappeared", 0);
 266                         }
 267                         break;
 268                 case REMOVE_CURSE:
 269                                 message((!halluc) ?
 270                                         "you feel as though someone is watching over you" :
 271                                         "you feel in touch with the universal oneness", 0);
 272                         uncurse_all();
 273                         break;
 274                 case CREATE_MONSTER:
 275                         create_monster();
 276                         break;
 277                 case AGGRAVATE_MONSTER:
 278                         aggravate();
 279                         break;
 280                 case MAGIC_MAPPING:
 281                         message("this scroll seems to have a map on it", 0);
 282                         draw_magic_map();
 283                         break;
 284                 case CON_MON:
 285                         con_mon = 1;
 286                         sprintf(msg, "your hands glow %sfor a moment", get_ench_color());
 287                         message(msg, 0);
 288                         break;
 289         }
 290         if (id_scrolls[obj->which_kind].id_status != CALLED) {
 291                 id_scrolls[obj->which_kind].id_status = IDENTIFIED;
 292         }
 293         vanish(obj, (obj->which_kind != SLEEP), &rogue.pack);
 294 }
 295
 296 /* vanish() does NOT handle a quiver of weapons with more than one
 297  *  arrow (or whatever) in the quiver.  It will only decrement the count.
 298  */
 299
 300 void
 301 vanish(obj, rm, pack)
 302         object *obj;
 303         short rm;
 304         object *pack;
 305 {
 306         if (obj->quantity > 1) {
 307                 obj->quantity--;
 308         } else {
 309                 if (obj->in_use_flags & BEING_WIELDED) {
 310                         unwield(obj);
 311                 } else if (obj->in_use_flags & BEING_WORN) {
 312                         unwear(obj);
 313                 } else if (obj->in_use_flags & ON_EITHER_HAND) {
 314                         un_put_on(obj);
 315                 }
 316                 take_from_pack(obj, pack);
 317                 free_object(obj);
 318         }
 319         if (rm) {
 320                 (void) reg_move();
 321         }
 322 }
 323
 324 void
 325 potion_heal(extra)
 326         int extra;
 327 {
 328         float ratio;
 329         short add;
 330
 331         rogue.hp_current += rogue.exp;
 332
 333         ratio = ((float)rogue.hp_current) / rogue.hp_max;
 334
 335         if (ratio >= 1.00) {
 336                 rogue.hp_max += (extra ? 2 : 1);
 337                 extra_hp += (extra ? 2 : 1);
 338                 rogue.hp_current = rogue.hp_max;
 339         } else if (ratio >= 0.90) {
 340                 rogue.hp_max += (extra ? 1 : 0);
 341                 extra_hp += (extra ? 1 : 0);
 342                 rogue.hp_current = rogue.hp_max;
 343         } else {
 344                 if (ratio < 0.33) {
 345                         ratio = 0.33;
 346                 }
 347                 if (extra) {
 348                         ratio += ratio;
 349                 }
 350                 add = (short)(ratio * ((float)rogue.hp_max - rogue.hp_current));
 351                 rogue.hp_current += add;
 352                 if (rogue.hp_current > rogue.hp_max) {
 353                         rogue.hp_current = rogue.hp_max;
 354                 }
 355         }
 356         if (blind) {
 357                 unblind();
 358         }
 359         if (confused && extra) {
 360                         unconfuse();
 361         } else if (confused) {
 362                 confused = (confused / 2) + 1;
 363         }
 364         if (halluc && extra) {
 365                 unhallucinate();
 366         } else if (halluc) {
 367                 halluc = (halluc / 2) + 1;
 368         }
 369 }
 370
 371 void
 372 idntfy()
 373 {
 374         short ch;
 375         object *obj;
 376         struct id *id_table;
 377         char desc[DCOLS];
 378 AGAIN:
 379         ch = pack_letter("what would you like to identify?", ALL_OBJECTS);
 380
 381         if (ch == CANCEL) {
 382                 return;
 383         }
 384         if (!(obj = get_letter_object(ch))) {
 385                 message("no such item, try again", 0);
 386                 message("", 0);
 387                 check_message();
 388                 goto AGAIN;
 389         }
 390         obj->identified = 1;
 391         if (obj->what_is & (SCROL | POTION | WEAPON | ARMOR | WAND | RING)) {
 392                 id_table = get_id_table(obj);
 393                 id_table[obj->which_kind].id_status = IDENTIFIED;
 394         }
 395         get_desc(obj, desc);
 396         message(desc, 0);
 397 }
 398
 399 void
 400 eat()
 401 {
 402         short ch;
 403         short moves;
 404         object *obj;
 405         char buf[70];
 406
 407         ch = pack_letter("eat what?", FOOD);
 408
 409         if (ch == CANCEL) {
 410                 return;
 411         }
 412         if (!(obj = get_letter_object(ch))) {
 413                 message("no such item.", 0);
 414                 return;
 415         }
 416         if (obj->what_is != FOOD) {
 417                 message("you can't eat that", 0);
 418                 return;
 419         }
 420         if ((obj->which_kind == FRUIT) || rand_percent(60)) {
 421                 moves = get_rand(950, 1150);
 422                 if (obj->which_kind == RATION) {
 423                         message("yum, that tasted good", 0);
 424                 } else {
 425                         sprintf(buf, "my, that was a yummy %s", fruit);
 426                         message(buf, 0);
 427                 }
 428         } else {
 429                 moves = get_rand(750, 950);
 430                 message("yuk, that food tasted awful", 0);
 431                 add_exp(2, 1);
 432         }
 433         rogue.moves_left /= 3;
 434         rogue.moves_left += moves;
 435         hunger_str[0] = 0;
 436         print_stats(STAT_HUNGER);
 437
 438         vanish(obj, 1, &rogue.pack);
 439 }
 440
 441 void
 442 hold_monster()
 443 {
 444         short i, j;
 445         short mcount = 0;
 446         object *monster;
 447         short row, col;
 448
 449         for (i = -2; i <= 2; i++) {
 450                 for (j = -2; j <= 2; j++) {
 451                         row = rogue.row + i;
 452                         col = rogue.col + j;
 453                         if ((row < MIN_ROW) || (row > (DROWS-2)) || (col < 0) ||
 454                                  (col > (DCOLS-1))) {
 455                                 continue;
 456                         }
 457                         if (dungeon[row][col] & MONSTER) {
 458                                 monster = object_at(&level_monsters, row, col);
 459                                 monster->m_flags |= ASLEEP;
 460                                 monster->m_flags &= (~WAKENS);
 461                                 mcount++;
 462                         }
 463                 }
 464         }
 465         if (mcount == 0) {
 466                 message("you feel a strange sense of loss", 0);
 467         } else if (mcount == 1) {
 468                 message("the monster freezes", 0);
 469         } else {
 470                 message("the monsters around you freeze", 0);
 471         }
 472 }
 473
 474 void
 475 tele()
 476 {
 477         mvaddch(rogue.row, rogue.col, get_dungeon_char(rogue.row, rogue.col));
 478
 479         if (cur_room >= 0) {
 480                 darken_room(cur_room);
 481         }
 482         put_player(get_room_number(rogue.row, rogue.col));
 483         being_held = 0;
 484         bear_trap = 0;
 485 }
 486
 487 void
 488 hallucinate()
 489 {
 490         object *obj, *monster;
 491         short ch;
 492
 493         if (blind) return;
 494
 495         obj = level_objects.next_object;
 496
 497         while (obj) {
 498                 ch = mvinch(obj->row, obj->col);
 499                 if (((ch < 'A') || (ch > 'Z')) &&
 500                         ((obj->row != rogue.row) || (obj->col != rogue.col)))
 501                 if ((ch != ' ') && (ch != '.') && (ch != '#') && (ch != '+')) {
 502                         addch(gr_obj_char());
 503                 }
 504                 obj = obj->next_object;
 505         }
 506         monster = level_monsters.next_monster;
 507
 508         while (monster) {
 509                 ch = mvinch(monster->row, monster->col);
 510                 if ((ch >= 'A') && (ch <= 'Z')) {
 511                         addch(get_rand('A', 'Z'));
 512                 }
 513                 monster = monster->next_monster;
 514         }
 515 }
 516
 517 void
 518 unhallucinate()
 519 {
 520         halluc = 0;
 521         relight();
 522         message("everything looks SO boring now", 1);
 523 }
 524
 525 void
 526 unblind()
 527 {
 528         blind = 0;
 529         message("the veil of darkness lifts", 1);
 530         relight();
 531         if (halluc) {
 532                 hallucinate();
 533         }
 534         if (detect_monster) {
 535                 show_monsters();
 536         }
 537 }
 538
 539 void
 540 relight()
 541 {
 542         if (cur_room == PASSAGE) {
 543                 light_passage(rogue.row, rogue.col);
 544         } else {
 545                 light_up_room(cur_room);
 546         }
 547         mvaddch(rogue.row, rogue.col, rogue.fchar);
 548 }
 549
 550 void
 551 take_a_nap()
 552 {
 553         short i;
 554
 555         i = get_rand(2, 5);
 556         md_sleep(1);
 557
 558         while (i--) {
 559                 mv_mons();
 560         }
 561         md_sleep(1);
 562         message(you_can_move_again, 0);
 563 }
 564
 565 void
 566 go_blind()
 567 {
 568         short i, j;
 569
 570         if (!blind) {
 571                 message("a cloak of darkness falls around you", 0);
 572         }
 573         blind += get_rand(500, 800);
 574
 575         if (detect_monster) {
 576                 object *monster;
 577
 578                 monster = level_monsters.next_monster;
 579
 580                 while (monster) {
 581                         mvaddch(monster->row, monster->col, monster->trail_char);
 582                         monster = monster->next_monster;
 583                 }
 584         }
 585         if (cur_room >= 0) {
 586                 for (i = rooms[cur_room].top_row + 1;
 587                          i < rooms[cur_room].bottom_row; i++) {
 588                         for (j = rooms[cur_room].left_col + 1;
 589                                  j < rooms[cur_room].right_col; j++) {
 590                                 mvaddch(i, j, ' ');
 591                         }
 592                 }
 593         }
 594         mvaddch(rogue.row, rogue.col, rogue.fchar);
 595 }
 596
 597 const char *
 598 get_ench_color()
 599 {
 600         if (halluc) {
 601                 return(id_potions[get_rand(0, POTIONS-1)].title);
 602         } else if (con_mon) {
 603                 return("red ");
 604         }
 605         return("blue ");
 606 }
 607
 608 void
 609 cnfs()
 610 {
 611         confused += get_rand(12, 22);
 612 }
 613
 614 void
 615 unconfuse()
 616 {
 617         char msg[80];
 618
 619         confused = 0;
 620         sprintf(msg, "you feel less %s now", (halluc ? "trippy" : "confused"));
 621         message(msg, 1);
 622 }
 623
 624 void
 625 uncurse_all()
 626 {
 627         object *obj;
 628
 629         obj = rogue.pack.next_object;
 630
 631         while (obj) {
 632                 obj->is_cursed = 0;
 633                 obj = obj->next_object;
 634         }
 635 }