games/rogue/zap.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. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * @(#)zap.c    8.1 (Berkeley) 5/31/93
  33  * $FreeBSD: src/games/rogue/zap.c,v 1.3 1999/11/30 03:49:29 billf Exp $
  34  * $DragonFly: src/games/rogue/zap.c,v 1.3 2006/09/02 19:31:07 pavalos Exp $
  35  */
  36
  37 /*
  38  * zap.c
  39  *
  40  * This source herein may be modified and/or distributed by anybody who
  41  * so desires, with the following restrictions:
  42  *    1.)  No portion of this notice shall be removed.
  43  *    2.)  Credit shall not be taken for the creation of this source.
  44  *    3.)  This code is not to be traded, sold, or used for personal
  45  *         gain or profit.
  46  *
  47  */
  48
  49 #include "rogue.h"
  50
  51 static object *get_zapped_monster(short, short *, short *);
  52 static void tele_away(object *);
  53 static void wdrain_life(object *);
  54 static void zap_monster(object *, unsigned short);
  55
  56 boolean wizard = 0;
  57
  58 extern boolean being_held, score_only, detect_monster;
  59 extern short cur_room;
  60
  61 void
  62 zapp(void)
  63 {
  64         short wch;
  65         boolean first_miss = 1;
  66         object *wand;
  67         short dir, d, row, col;
  68         object *monster;
  69
  70         while (!is_direction(dir = rgetchar(), &d)) {
  71                 sound_bell();
  72                 if (first_miss) {
  73                         message("direction? ", 0);
  74                         first_miss = 0;
  75                 }
  76         }
  77         check_message();
  78         if (dir == CANCEL) {
  79                 return;
  80         }
  81         if ((wch = pack_letter("zap with what?", WAND)) == CANCEL) {
  82                 return;
  83         }
  84         check_message();
  85
  86         if (!(wand = get_letter_object(wch))) {
  87                 message("no such item.", 0);
  88                 return;
  89         }
  90         if (wand->what_is != WAND) {
  91                 message("you can't zap with that", 0);
  92                 return;
  93         }
  94         if (wand->class <= 0) {
  95                 message("nothing happens", 0);
  96         } else {
  97                 wand->class--;
  98                 row = rogue.row; col = rogue.col;
  99                 if ((wand->which_kind == COLD) || (wand->which_kind == FIRE)) {
 100                         bounce((short)wand->which_kind, d, row, col, 0);
 101                 } else {
 102                         monster = get_zapped_monster(d, &row, &col);
 103                         if (wand->which_kind == DRAIN_LIFE) {
 104                                 wdrain_life(monster);
 105                         } else if (monster) {
 106                                 wake_up(monster);
 107                                 s_con_mon(monster);
 108                                 zap_monster(monster, wand->which_kind);
 109                                 relight();
 110                         }
 111                 }
 112         }
 113         reg_move();
 114 }
 115
 116 static object *
 117 get_zapped_monster(short dir, short *row, short *col)
 118 {
 119         short orow, ocol;
 120
 121         for (;;) {
 122                 orow = *row; ocol = *col;
 123                 get_dir_rc(dir, row, col, 0);
 124                 if (((*row == orow) && (*col == ocol)) ||
 125                    (dungeon[*row][*col] & (HORWALL | VERTWALL)) ||
 126                    (dungeon[*row][*col] == NOTHING)) {
 127                         return(0);
 128                 }
 129                 if (dungeon[*row][*col] & MONSTER) {
 130                         if (!imitating(*row, *col)) {
 131                                 return(object_at(&level_monsters, *row, *col));
 132                         }
 133                 }
 134         }
 135 }
 136
 137 static void
 138 zap_monster(object *monster, unsigned short kind)
 139 {
 140         short row, col;
 141         object *nm;
 142         short tc;
 143
 144         row = monster->row;
 145         col = monster->col;
 146
 147         switch(kind) {
 148         case SLOW_MONSTER:
 149                 if (monster->m_flags & HASTED) {
 150                         monster->m_flags &= (~HASTED);
 151                 } else {
 152                         monster->slowed_toggle = 0;
 153                         monster->m_flags |= SLOWED;
 154                 }
 155                 break;
 156         case HASTE_MONSTER:
 157                 if (monster->m_flags & SLOWED) {
 158                         monster->m_flags &= (~SLOWED);
 159                 } else {
 160                         monster->m_flags |= HASTED;
 161                 }
 162                 break;
 163         case TELE_AWAY:
 164                 tele_away(monster);
 165                 break;
 166         case INVISIBILITY:
 167                 monster->m_flags |= INVISIBLE;
 168                 break;
 169         case POLYMORPH:
 170                 if (monster->m_flags & HOLDS) {
 171                         being_held = 0;
 172                 }
 173                 nm = monster->next_monster;
 174                 tc = monster->trail_char;
 175                 gr_monster(monster, get_rand(0, MONSTERS-1));
 176                 monster->row = row;
 177                 monster->col = col;
 178                 monster->next_monster = nm;
 179                 monster->trail_char = tc;
 180                 if (!(monster->m_flags & IMITATES)) {
 181                         wake_up(monster);
 182                 }
 183                 break;
 184         case MAGIC_MISSILE:
 185                 rogue_hit(monster, 1);
 186                 break;
 187         case CANCELLATION:
 188                 if (monster->m_flags & HOLDS) {
 189                         being_held = 0;
 190                 }
 191                 if (monster->m_flags & STEALS_ITEM) {
 192                         monster->drop_percent = 0;
 193                 }
 194                 monster->m_flags &= (~(FLIES | FLITS | SPECIAL_HIT | INVISIBLE |
 195                         FLAMES | IMITATES | CONFUSES | SEEKS_GOLD | HOLDS));
 196                 break;
 197         case DO_NOTHING:
 198                 message("nothing happens", 0);
 199                 break;
 200         }
 201 }
 202
 203 static void
 204 tele_away(object *monster)
 205 {
 206         short row, col;
 207
 208         if (monster->m_flags & HOLDS) {
 209                 being_held = 0;
 210         }
 211         gr_row_col(&row, &col, (FLOOR | TUNNEL | STAIRS | OBJECT));
 212         mvaddch(monster->row, monster->col, monster->trail_char);
 213         dungeon[monster->row][monster->col] &= ~MONSTER;
 214         monster->row = row; monster->col = col;
 215         dungeon[row][col] |= MONSTER;
 216         monster->trail_char = mvinch(row, col);
 217         if (detect_monster || rogue_can_see(row, col)) {
 218                 mvaddch(row, col, gmc(monster));
 219         }
 220 }
 221
 222 void
 223 wizardize(void)
 224 {
 225         char buf[100];
 226
 227         if (wizard) {
 228                 wizard = 0;
 229                 message("not wizard anymore", 0);
 230         } else {
 231                 if (get_input_line("wizard's password:", "", buf, "", 0, 0)) {
 232                         xxx(1);
 233                         xxxx(buf, strlen(buf));
 234                         if (!strncmp(buf, "\247\104\126\272\115\243\027", 7)) {
 235                                 wizard = 1;
 236                                 score_only = 1;
 237                                 message("Welcome, mighty wizard!", 0);
 238                         } else {
 239                                 message("sorry", 0);
 240                         }
 241                 }
 242         }
 243 }
 244
 245 static void
 246 wdrain_life(object *monster)
 247 {
 248         short hp;
 249         object *lmon, *nm;
 250
 251         hp = rogue.hp_current / 3;
 252         rogue.hp_current = (rogue.hp_current + 1) / 2;
 253
 254         if (cur_room >= 0) {
 255                 lmon = level_monsters.next_monster;
 256                 while (lmon) {
 257                         nm = lmon->next_monster;
 258                         if (get_room_number(lmon->row, lmon->col) == cur_room) {
 259                                 wake_up(lmon);
 260                                 mon_damage(lmon, hp);
 261                         }
 262                         lmon = nm;
 263                 }
 264         } else {
 265                 if (monster) {
 266                         wake_up(monster);
 267                         mon_damage(monster, hp);
 268                 }
 269         }
 270         print_stats(STAT_HP);
 271         relight();
 272 }
 273
 274 void
 275 bounce(short ball, short dir, short row, short col, short r)
 276 {
 277         short orow, ocol;
 278         char buf[DCOLS];
 279         const char *s;
 280         short i, ch, new_dir = -1, damage;
 281         static short btime;
 282
 283         if (++r == 1) {
 284                 btime = get_rand(3, 6);
 285         } else if (r > btime) {
 286                 return;
 287         }
 288
 289         if (ball == FIRE) {
 290                 s = "fire";
 291         } else {
 292                 s = "ice";
 293         }
 294         if (r > 1) {
 295                 sprintf(buf, "the %s bounces", s);
 296                 message(buf, 0);
 297         }
 298         orow = row;
 299         ocol = col;
 300         do {
 301                 ch = mvinch(orow, ocol);
 302                 standout();
 303                 mvaddch(orow, ocol, ch);
 304                 get_dir_rc(dir, &orow, &ocol, 1);
 305         } while (!(     (ocol <= 0) ||
 306                                 (ocol >= DCOLS-1) ||
 307                                 (dungeon[orow][ocol] == NOTHING) ||
 308                                 (dungeon[orow][ocol] & MONSTER) ||
 309                                 (dungeon[orow][ocol] & (HORWALL | VERTWALL)) ||
 310                                 ((orow == rogue.row) && (ocol == rogue.col))));
 311         standend();
 312         refresh();
 313         do {
 314                 orow = row;
 315                 ocol = col;
 316                 ch = mvinch(row, col);
 317                 mvaddch(row, col, ch);
 318                 get_dir_rc(dir, &row, &col, 1);
 319         } while (!(     (col <= 0) ||
 320                                 (col >= DCOLS-1) ||
 321                                 (dungeon[row][col] == NOTHING) ||
 322                                 (dungeon[row][col] & MONSTER) ||
 323                                 (dungeon[row][col] & (HORWALL | VERTWALL)) ||
 324                                 ((row == rogue.row) && (col == rogue.col))));
 325
 326         if (dungeon[row][col] & MONSTER) {
 327                 object *monster;
 328
 329                 monster = object_at(&level_monsters, row, col);
 330
 331                 wake_up(monster);
 332                 if (rand_percent(33)) {
 333                         sprintf(buf, "the %s misses the %s", s, mon_name(monster));
 334                         message(buf, 0);
 335                         goto ND;
 336                 }
 337                 if (ball == FIRE) {
 338                         if (!(monster->m_flags & RUSTS)) {
 339                                 if (monster->m_flags & FREEZES) {
 340                                         damage = monster->hp_to_kill;
 341                                 } else if (monster->m_flags & FLAMES) {
 342                                         damage = (monster->hp_to_kill / 10) + 1;
 343                                 } else {
 344                                         damage = get_rand((rogue.hp_current / 3), rogue.hp_max);
 345                                 }
 346                         } else {
 347                                 damage = (monster->hp_to_kill / 2) + 1;
 348                         }
 349                         sprintf(buf, "the %s hits the %s", s, mon_name(monster));
 350                         message(buf, 0);
 351                         mon_damage(monster, damage);
 352                 } else {
 353                         damage = -1;
 354                         if (!(monster->m_flags & FREEZES)) {
 355                                 if (rand_percent(33)) {
 356                                         message("the monster is frozen", 0);
 357                                         monster->m_flags |= (ASLEEP | NAPPING);
 358                                         monster->nap_length = get_rand(3, 6);
 359                                 } else {
 360                                         damage = rogue.hp_current / 4;
 361                                 }
 362                         } else {
 363                                 damage = -2;
 364                         }
 365                         if (damage != -1) {
 366                                 sprintf(buf, "the %s hits the %s", s, mon_name(monster));
 367                                 message(buf, 0);
 368                                 mon_damage(monster, damage);
 369                         }
 370                 }
 371         } else if ((row == rogue.row) && (col == rogue.col)) {
 372                 if (rand_percent(10 + (3 * get_armor_class(rogue.armor)))) {
 373                         sprintf(buf, "the %s misses", s);
 374                         message(buf, 0);
 375                         goto ND;
 376                 } else {
 377                         damage = get_rand(3, (3 * rogue.exp));
 378                         if (ball == FIRE) {
 379                                 damage = (damage * 3) / 2;
 380                                 damage -= get_armor_class(rogue.armor);
 381                         }
 382                         sprintf(buf, "the %s hits", s);
 383                         rogue_damage(damage, NULL,
 384                                         ((ball == FIRE) ? KFIRE : HYPOTHERMIA));
 385                         message(buf, 0);
 386                 }
 387         } else {
 388                 short nrow, ncol;
 389
 390 ND:             for (i = 0; i < 10; i++) {
 391                         dir = get_rand(0, DIRS-1);
 392                         nrow = orow;
 393                         ncol = ocol;
 394                         get_dir_rc(dir, &nrow, &ncol, 1);
 395                         if (((ncol >= 0) && (ncol <= DCOLS-1)) &&
 396                                 (dungeon[nrow][ncol] != NOTHING) &&
 397                                 (!(dungeon[nrow][ncol] & (VERTWALL | HORWALL)))) {
 398                                 new_dir = dir;
 399                                 break;
 400                         }
 401                 }
 402                 if (new_dir != -1) {
 403                         bounce(ball, new_dir, orow, ocol, r);
 404                 }
 405         }
 406 }