games/rogue/use.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  * @(#)use.c    8.1 (Berkeley) 5/31/93
  37  * $FreeBSD: src/games/rogue/use.c,v 1.4 1999/11/30 03:49:29 billf Exp $
  38  * $DragonFly: src/games/rogue/use.c,v 1.2 2003/06/17 04:25:25 dillon Exp $
  39  */
  40
  41 /*
  42  * use.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 short halluc = 0;
  56 short blind = 0;
  57 short confused = 0;
  58 short levitate = 0;
  59 short haste_self = 0;
  60 boolean see_invisible = 0;
  61 short extra_hp = 0;
  62 boolean detect_monster = 0;
  63 boolean con_mon = 0;
  64 const char *strange_feeling = "you have a strange feeling for a moment, then it passes";
  65
  66 extern short bear_trap;
  67 extern char hunger_str[];
  68 extern short cur_room;
  69 extern long level_points[];
  70 extern boolean being_held;
  71 extern char *fruit, *you_can_move_again;
  72 extern boolean sustain_strength;
  73
  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 read_scroll()
 188 {
 189         short ch;
 190         object *obj;
 191         char msg[DCOLS];
 192
 193         ch = pack_letter("read what?", SCROL);
 194
 195         if (ch == CANCEL) {
 196                 return;
 197         }
 198         if (!(obj = get_letter_object(ch))) {
 199                 message("no such item.", 0);
 200                 return;
 201         }
 202         if (obj->what_is != SCROL) {
 203                 message("you can't read that", 0);
 204                 return;
 205         }
 206         switch(obj->which_kind) {
 207                 case SCARE_MONSTER:
 208                         message("you hear a maniacal laughter in the distance",
 209                         0);
 210                         break;
 211                 case HOLD_MONSTER:
 212                         hold_monster();
 213                         break;
 214                 case ENCH_WEAPON:
 215                         if (rogue.weapon) {
 216                                 if (rogue.weapon->what_is == WEAPON) {
 217                                         sprintf(msg, "your %sglow%s %sfor a moment",
 218                                         name_of(rogue.weapon),
 219                                         ((rogue.weapon->quantity <= 1) ? "s" : ""),
 220                                         get_ench_color());
 221                                         message(msg, 0);
 222                                         if (coin_toss()) {
 223                                                 rogue.weapon->hit_enchant++;
 224                                         } else {
 225                                                 rogue.weapon->d_enchant++;
 226                                         }
 227                                 }
 228                                 rogue.weapon->is_cursed = 0;
 229                         } else {
 230                                 message("your hands tingle", 0);
 231                         }
 232                         break;
 233                 case ENCH_ARMOR:
 234                         if (rogue.armor) {
 235                                 sprintf(msg, "your armor glows %sfor a moment",
 236                                 get_ench_color());
 237                                 message(msg, 0);
 238                                 rogue.armor->d_enchant++;
 239                                 rogue.armor->is_cursed = 0;
 240                                 print_stats(STAT_ARMOR);
 241                         } else {
 242                                 message("your skin crawls", 0);
 243                         }
 244                         break;
 245                 case IDENTIFY:
 246                         message("this is a scroll of identify", 0);
 247                         obj->identified = 1;
 248                         id_scrolls[obj->which_kind].id_status = IDENTIFIED;
 249                         idntfy();
 250                         break;
 251                 case TELEPORT:
 252                         tele();
 253                         break;
 254                 case SLEEP:
 255                         message("you fall asleep", 0);
 256                         take_a_nap();
 257                         break;
 258                 case PROTECT_ARMOR:
 259                         if (rogue.armor) {
 260                                 message( "your armor is covered by a shimmering gold shield",0);
 261                                 rogue.armor->is_protected = 1;
 262                                 rogue.armor->is_cursed = 0;
 263                         } else {
 264                                 message("your acne seems to have disappeared", 0);
 265                         }
 266                         break;
 267                 case REMOVE_CURSE:
 268                                 message((!halluc) ?
 269                                         "you feel as though someone is watching over you" :
 270                                         "you feel in touch with the universal oneness", 0);
 271                         uncurse_all();
 272                         break;
 273                 case CREATE_MONSTER:
 274                         create_monster();
 275                         break;
 276                 case AGGRAVATE_MONSTER:
 277                         aggravate();
 278                         break;
 279                 case MAGIC_MAPPING:
 280                         message("this scroll seems to have a map on it", 0);
 281                         draw_magic_map();
 282                         break;
 283                 case CON_MON:
 284                         con_mon = 1;
 285                         sprintf(msg, "your hands glow %sfor a moment", get_ench_color());
 286                         message(msg, 0);
 287                         break;
 288         }
 289         if (id_scrolls[obj->which_kind].id_status != CALLED) {
 290                 id_scrolls[obj->which_kind].id_status = IDENTIFIED;
 291         }
 292         vanish(obj, (obj->which_kind != SLEEP), &rogue.pack);
 293 }
 294
 295 /* vanish() does NOT handle a quiver of weapons with more than one
 296  *  arrow (or whatever) in the quiver.  It will only decrement the count.
 297  */
 298
 299 vanish(obj, rm, pack)
 300 object *obj;
 301 short rm;
 302 object *pack;
 303 {
 304         if (obj->quantity > 1) {
 305                 obj->quantity--;
 306         } else {
 307                 if (obj->in_use_flags & BEING_WIELDED) {
 308                         unwield(obj);
 309                 } else if (obj->in_use_flags & BEING_WORN) {
 310                         unwear(obj);
 311                 } else if (obj->in_use_flags & ON_EITHER_HAND) {
 312                         un_put_on(obj);
 313                 }
 314                 take_from_pack(obj, pack);
 315                 free_object(obj);
 316         }
 317         if (rm) {
 318                 (void) reg_move();
 319         }
 320 }
 321
 322 potion_heal(extra)
 323 {
 324         float ratio;
 325         short add;
 326
 327         rogue.hp_current += rogue.exp;
 328
 329         ratio = ((float)rogue.hp_current) / rogue.hp_max;
 330
 331         if (ratio >= 1.00) {
 332                 rogue.hp_max += (extra ? 2 : 1);
 333                 extra_hp += (extra ? 2 : 1);
 334                 rogue.hp_current = rogue.hp_max;
 335         } else if (ratio >= 0.90) {
 336                 rogue.hp_max += (extra ? 1 : 0);
 337                 extra_hp += (extra ? 1 : 0);
 338                 rogue.hp_current = rogue.hp_max;
 339         } else {
 340                 if (ratio < 0.33) {
 341                         ratio = 0.33;
 342                 }
 343                 if (extra) {
 344                         ratio += ratio;
 345                 }
 346                 add = (short)(ratio * ((float)rogue.hp_max - rogue.hp_current));
 347                 rogue.hp_current += add;
 348                 if (rogue.hp_current > rogue.hp_max) {
 349                         rogue.hp_current = rogue.hp_max;
 350                 }
 351         }
 352         if (blind) {
 353                 unblind();
 354         }
 355         if (confused && extra) {
 356                         unconfuse();
 357         } else if (confused) {
 358                 confused = (confused / 2) + 1;
 359         }
 360         if (halluc && extra) {
 361                 unhallucinate();
 362         } else if (halluc) {
 363                 halluc = (halluc / 2) + 1;
 364         }
 365 }
 366
 367 idntfy()
 368 {
 369         short ch;
 370         object *obj;
 371         struct id *id_table;
 372         char desc[DCOLS];
 373 AGAIN:
 374         ch = pack_letter("what would you like to identify?", ALL_OBJECTS);
 375
 376         if (ch == CANCEL) {
 377                 return;
 378         }
 379         if (!(obj = get_letter_object(ch))) {
 380                 message("no such item, try again", 0);
 381                 message("", 0);
 382                 check_message();
 383                 goto AGAIN;
 384         }
 385         obj->identified = 1;
 386         if (obj->what_is & (SCROL | POTION | WEAPON | ARMOR | WAND | RING)) {
 387                 id_table = get_id_table(obj);
 388                 id_table[obj->which_kind].id_status = IDENTIFIED;
 389         }
 390         get_desc(obj, desc);
 391         message(desc, 0);
 392 }
 393
 394 eat()
 395 {
 396         short ch;
 397         short moves;
 398         object *obj;
 399         char buf[70];
 400
 401         ch = pack_letter("eat what?", FOOD);
 402
 403         if (ch == CANCEL) {
 404                 return;
 405         }
 406         if (!(obj = get_letter_object(ch))) {
 407                 message("no such item.", 0);
 408                 return;
 409         }
 410         if (obj->what_is != FOOD) {
 411                 message("you can't eat that", 0);
 412                 return;
 413         }
 414         if ((obj->which_kind == FRUIT) || rand_percent(60)) {
 415                 moves = get_rand(950, 1150);
 416                 if (obj->which_kind == RATION) {
 417                         message("yum, that tasted good", 0);
 418                 } else {
 419                         sprintf(buf, "my, that was a yummy %s", fruit);
 420                         message(buf, 0);
 421                 }
 422         } else {
 423                 moves = get_rand(750, 950);
 424                 message("yuk, that food tasted awful", 0);
 425                 add_exp(2, 1);
 426         }
 427         rogue.moves_left /= 3;
 428         rogue.moves_left += moves;
 429         hunger_str[0] = 0;
 430         print_stats(STAT_HUNGER);
 431
 432         vanish(obj, 1, &rogue.pack);
 433 }
 434
 435 hold_monster()
 436 {
 437         short i, j;
 438         short mcount = 0;
 439         object *monster;
 440         short row, col;
 441
 442         for (i = -2; i <= 2; i++) {
 443                 for (j = -2; j <= 2; j++) {
 444                         row = rogue.row + i;
 445                         col = rogue.col + j;
 446                         if ((row < MIN_ROW) || (row > (DROWS-2)) || (col < 0) ||
 447                                  (col > (DCOLS-1))) {
 448                                 continue;
 449                         }
 450                         if (dungeon[row][col] & MONSTER) {
 451                                 monster = object_at(&level_monsters, row, col);
 452                                 monster->m_flags |= ASLEEP;
 453                                 monster->m_flags &= (~WAKENS);
 454                                 mcount++;
 455                         }
 456                 }
 457         }
 458         if (mcount == 0) {
 459                 message("you feel a strange sense of loss", 0);
 460         } else if (mcount == 1) {
 461                 message("the monster freezes", 0);
 462         } else {
 463                 message("the monsters around you freeze", 0);
 464         }
 465 }
 466
 467 tele()
 468 {
 469         mvaddch(rogue.row, rogue.col, get_dungeon_char(rogue.row, rogue.col));
 470
 471         if (cur_room >= 0) {
 472                 darken_room(cur_room);
 473         }
 474         put_player(get_room_number(rogue.row, rogue.col));
 475         being_held = 0;
 476         bear_trap = 0;
 477 }
 478
 479 hallucinate()
 480 {
 481         object *obj, *monster;
 482         short ch;
 483
 484         if (blind) return;
 485
 486         obj = level_objects.next_object;
 487
 488         while (obj) {
 489                 ch = mvinch(obj->row, obj->col);
 490                 if (((ch < 'A') || (ch > 'Z')) &&
 491                         ((obj->row != rogue.row) || (obj->col != rogue.col)))
 492                 if ((ch != ' ') && (ch != '.') && (ch != '#') && (ch != '+')) {
 493                         addch(gr_obj_char());
 494                 }
 495                 obj = obj->next_object;
 496         }
 497         monster = level_monsters.next_monster;
 498
 499         while (monster) {
 500                 ch = mvinch(monster->row, monster->col);
 501                 if ((ch >= 'A') && (ch <= 'Z')) {
 502                         addch(get_rand('A', 'Z'));
 503                 }
 504                 monster = monster->next_monster;
 505         }
 506 }
 507
 508 unhallucinate()
 509 {
 510         halluc = 0;
 511         relight();
 512         message("everything looks SO boring now", 1);
 513 }
 514
 515 unblind()
 516 {
 517         blind = 0;
 518         message("the veil of darkness lifts", 1);
 519         relight();
 520         if (halluc) {
 521                 hallucinate();
 522         }
 523         if (detect_monster) {
 524                 show_monsters();
 525         }
 526 }
 527
 528 relight()
 529 {
 530         if (cur_room == PASSAGE) {
 531                 light_passage(rogue.row, rogue.col);
 532         } else {
 533                 light_up_room(cur_room);
 534         }
 535         mvaddch(rogue.row, rogue.col, rogue.fchar);
 536 }
 537
 538 take_a_nap()
 539 {
 540         short i;
 541
 542         i = get_rand(2, 5);
 543         md_sleep(1);
 544
 545         while (i--) {
 546                 mv_mons();
 547         }
 548         md_sleep(1);
 549         message(you_can_move_again, 0);
 550 }
 551
 552 go_blind()
 553 {
 554         short i, j;
 555
 556         if (!blind) {
 557                 message("a cloak of darkness falls around you", 0);
 558         }
 559         blind += get_rand(500, 800);
 560
 561         if (detect_monster) {
 562                 object *monster;
 563
 564                 monster = level_monsters.next_monster;
 565
 566                 while (monster) {
 567                         mvaddch(monster->row, monster->col, monster->trail_char);
 568                         monster = monster->next_monster;
 569                 }
 570         }
 571         if (cur_room >= 0) {
 572                 for (i = rooms[cur_room].top_row + 1;
 573                          i < rooms[cur_room].bottom_row; i++) {
 574                         for (j = rooms[cur_room].left_col + 1;
 575                                  j < rooms[cur_room].right_col; j++) {
 576                                 mvaddch(i, j, ' ');
 577                         }
 578                 }
 579         }
 580         mvaddch(rogue.row, rogue.col, rogue.fchar);
 581 }
 582
 583 const char *
 584 get_ench_color()
 585 {
 586         if (halluc) {
 587                 return(id_potions[get_rand(0, POTIONS-1)].title);
 588         } else if (con_mon) {
 589                 return("red ");
 590         }
 591         return("blue ");
 592 }
 593
 594 cnfs()
 595 {
 596         confused += get_rand(12, 22);
 597 }
 598
 599 unconfuse()
 600 {
 601         char msg[80];
 602
 603         confused = 0;
 604         sprintf(msg, "you feel less %s now", (halluc ? "trippy" : "confused"));
 605         message(msg, 1);
 606 }
 607
 608 uncurse_all()
 609 {
 610         object *obj;
 611
 612         obj = rogue.pack.next_object;
 613
 614         while (obj) {
 615                 obj->is_cursed = 0;
 616                 obj = obj->next_object;
 617         }
 618 }