rogue/hit.c

   1 /*      $NetBSD: hit.c,v 1.7 2003/08/07 09:37:37 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[] = "@(#)hit.c       8.1 (Berkeley) 5/31/93";
  39 #else
  40 __RCSID("$NetBSD: hit.c,v 1.7 2003/08/07 09:37:37 agc Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 /*
  45  * hit.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 object *fight_monster = 0;
  59 char hit_message[80] = "";
  60
  61 void
  62 mon_hit(monster)
  63         object *monster;
  64 {
  65         short damage, hit_chance;
  66         const char *mn;
  67         float minus;
  68
  69         if (fight_monster && (monster != fight_monster)) {
  70                 fight_monster = 0;
  71         }
  72         monster->trow = NO_ROOM;
  73         if (cur_level >= (AMULET_LEVEL * 2)) {
  74                 hit_chance = 100;
  75         } else {
  76                 hit_chance = monster->m_hit_chance;
  77                 hit_chance -= (((2 * rogue.exp) + (2 * ring_exp)) - r_rings);
  78         }
  79         if (wizard) {
  80                 hit_chance /= 2;
  81         }
  82         if (!fight_monster) {
  83                 interrupted = 1;
  84         }
  85         mn = mon_name(monster);
  86
  87         if (!rand_percent(hit_chance)) {
  88                 if (!fight_monster) {
  89                         sprintf(hit_message + strlen(hit_message),
  90                             "the %s misses", mn);
  91                         message(hit_message, 1);
  92                         hit_message[0] = 0;
  93                 }
  94                 return;
  95         }
  96         if (!fight_monster) {
  97                 sprintf(hit_message + strlen(hit_message), "the %s hit", mn);
  98                 message(hit_message, 1);
  99                 hit_message[0] = 0;
 100         }
 101         if (!(monster->m_flags & STATIONARY)) {
 102                 damage = get_damage(monster->m_damage, 1);
 103                 if (cur_level >= (AMULET_LEVEL * 2)) {
 104                         minus = (float) ((AMULET_LEVEL * 2) - cur_level);
 105                 } else {
 106                         minus = (float) get_armor_class(rogue.armor) * 3.00;
 107                         minus = minus/100.00 * (float) damage;
 108                 }
 109                 damage -= (short) minus;
 110         } else {
 111                 damage = monster->stationary_damage++;
 112         }
 113         if (wizard) {
 114                 damage /= 3;
 115         }
 116         if (damage > 0) {
 117                 rogue_damage(damage, monster, 0);
 118         }
 119         if (monster->m_flags & SPECIAL_HIT) {
 120                 special_hit(monster);
 121         }
 122 }
 123
 124 void
 125 rogue_hit(monster, force_hit)
 126         object *monster;
 127         boolean force_hit;
 128 {
 129         short damage, hit_chance;
 130
 131         if (monster) {
 132                 if (check_imitator(monster)) {
 133                         return;
 134                 }
 135                 hit_chance = force_hit ? 100 : get_hit_chance(rogue.weapon);
 136
 137                 if (wizard) {
 138                         hit_chance *= 2;
 139                 }
 140                 if (!rand_percent(hit_chance)) {
 141                         if (!fight_monster) {
 142                                 (void) strcpy(hit_message, "you miss  ");
 143                         }
 144                         goto RET;
 145                 }
 146                 damage = get_weapon_damage(rogue.weapon);
 147                 if (wizard) {
 148                         damage *= 3;
 149                 }
 150                 if (con_mon) {
 151                         s_con_mon(monster);
 152                 }
 153                 if (mon_damage(monster, damage)) {      /* still alive? */
 154                         if (!fight_monster) {
 155                                 (void) strcpy(hit_message, "you hit  ");
 156                         }
 157                 }
 158 RET:    check_gold_seeker(monster);
 159                 wake_up(monster);
 160         }
 161 }
 162
 163 void
 164 rogue_damage(d, monster, other)
 165         short d;
 166         object *monster;
 167         short other;
 168 {
 169         if (d >= rogue.hp_current) {
 170                 rogue.hp_current = 0;
 171                 print_stats(STAT_HP);
 172                 killed_by(monster, other);
 173         }
 174         if (d > 0) {
 175                 rogue.hp_current -= d;
 176                 print_stats(STAT_HP);
 177         }
 178 }
 179
 180 int
 181 get_damage(ds, r)
 182         const char *ds;
 183         boolean r;
 184 {
 185         int i = 0, j, n, d, total = 0;
 186
 187         while (ds[i]) {
 188                 n = get_number(ds+i);
 189                 while (ds[i++] != 'd') ;
 190                 d = get_number(ds+i);
 191                 while ((ds[i] != '/') && ds[i]) i++;
 192
 193                 for (j = 0; j < n; j++) {
 194                         if (r) {
 195                                 total += get_rand(1, d);
 196                         } else {
 197                                 total += d;
 198                         }
 199                 }
 200                 if (ds[i] == '/') {
 201                         i++;
 202                 }
 203         }
 204         return(total);
 205 }
 206
 207 int
 208 get_w_damage(obj)
 209         const object *obj;
 210 {
 211         char new_damage[12];
 212         int tmp_to_hit, tmp_damage;
 213         int i = 0;
 214
 215         if ((!obj) || (obj->what_is != WEAPON)) {
 216                 return(-1);
 217         }
 218         tmp_to_hit = get_number(obj->damage) + obj->hit_enchant;
 219         while (obj->damage[i++] != 'd') ;
 220         tmp_damage = get_number(obj->damage + i) + obj->d_enchant;
 221
 222         sprintf(new_damage, "%dd%d", tmp_to_hit, tmp_damage);
 223
 224         return(get_damage(new_damage, 1));
 225 }
 226
 227 int
 228 get_number(s)
 229         const char *s;
 230 {
 231         int i = 0;
 232         int total = 0;
 233
 234         while ((s[i] >= '0') && (s[i] <= '9')) {
 235                 total = (10 * total) + (s[i] - '0');
 236                 i++;
 237         }
 238         return(total);
 239 }
 240
 241 long
 242 lget_number(s)
 243         const char *s;
 244 {
 245         short i = 0;
 246         long total = 0;
 247
 248         while ((s[i] >= '0') && (s[i] <= '9')) {
 249                 total = (10 * total) + (s[i] - '0');
 250                 i++;
 251         }
 252         return(total);
 253 }
 254
 255 int
 256 to_hit(obj)
 257         const object *obj;
 258 {
 259         if (!obj) {
 260                 return(1);
 261         }
 262         return(get_number(obj->damage) + obj->hit_enchant);
 263 }
 264
 265 int
 266 damage_for_strength()
 267 {
 268         short strength;
 269
 270         strength = rogue.str_current + add_strength;
 271
 272         if (strength <= 6) {
 273                 return(strength-5);
 274         }
 275         if (strength <= 14) {
 276                 return(1);
 277         }
 278         if (strength <= 17) {
 279                 return(3);
 280         }
 281         if (strength <= 18) {
 282                 return(4);
 283         }
 284         if (strength <= 20) {
 285                 return(5);
 286         }
 287         if (strength <= 21) {
 288                 return(6);
 289         }
 290         if (strength <= 30) {
 291                 return(7);
 292         }
 293         return(8);
 294 }
 295
 296 int
 297 mon_damage(monster, damage)
 298         object *monster;
 299         short damage;
 300 {
 301         const char *mn;
 302         short row, col;
 303
 304         monster->hp_to_kill -= damage;
 305
 306         if (monster->hp_to_kill <= 0) {
 307                 row = monster->row;
 308                 col = monster->col;
 309                 dungeon[row][col] &= ~MONSTER;
 310                 mvaddch(row, col, (int) get_dungeon_char(row, col));
 311
 312                 fight_monster = 0;
 313                 cough_up(monster);
 314                 mn = mon_name(monster);
 315                 sprintf(hit_message+strlen(hit_message), "defeated the %s", mn);
 316                 message(hit_message, 1);
 317                 hit_message[0] = 0;
 318                 add_exp(monster->kill_exp, 1);
 319                 take_from_pack(monster, &level_monsters);
 320
 321                 if (monster->m_flags & HOLDS) {
 322                         being_held = 0;
 323                 }
 324                 free_object(monster);
 325                 return(0);
 326         }
 327         return(1);
 328 }
 329
 330 void
 331 fight(to_the_death)
 332         boolean to_the_death;
 333 {
 334         short ch, c, d;
 335         short row, col;
 336         boolean first_miss = 1;
 337         short possible_damage;
 338         object *monster;
 339
 340         ch = 0;
 341         while (!is_direction(ch = rgetchar(), &d)) {
 342                 sound_bell();
 343                 if (first_miss) {
 344                         message("direction?", 0);
 345                         first_miss = 0;
 346                 }
 347         }
 348         check_message();
 349         if (ch == CANCEL) {
 350                 return;
 351         }
 352         row = rogue.row; col = rogue.col;
 353         get_dir_rc(d, &row, &col, 0);
 354
 355         c = mvinch(row, col);
 356         if (((c < 'A') || (c > 'Z')) ||
 357                 (!can_move(rogue.row, rogue.col, row, col))) {
 358                 message("I see no monster there", 0);
 359                 return;
 360         }
 361         if (!(fight_monster = object_at(&level_monsters, row, col))) {
 362                 return;
 363         }
 364         if (!(fight_monster->m_flags & STATIONARY)) {
 365                 possible_damage = ((get_damage(fight_monster->m_damage, 0) * 2) / 3);
 366         } else {
 367                 possible_damage = fight_monster->stationary_damage - 1;
 368         }
 369         while (fight_monster) {
 370                 (void) one_move_rogue(ch, 0);
 371                 if (((!to_the_death) && (rogue.hp_current <= possible_damage)) ||
 372                         interrupted || (!(dungeon[row][col] & MONSTER))) {
 373                         fight_monster = 0;
 374                 } else {
 375                         monster = object_at(&level_monsters, row, col);
 376                         if (monster != fight_monster) {
 377                                 fight_monster = 0;
 378                         }
 379                 }
 380         }
 381 }
 382
 383 void
 384 get_dir_rc(dir, row, col, allow_off_screen)
 385         short dir;
 386         short *row, *col;
 387         short allow_off_screen;
 388 {
 389         switch(dir) {
 390         case LEFT:
 391                 if (allow_off_screen || (*col > 0)) {
 392                         (*col)--;
 393                 }
 394                 break;
 395         case DOWN:
 396                 if (allow_off_screen || (*row < (DROWS-2))) {
 397                         (*row)++;
 398                 }
 399                 break;
 400         case UPWARD:
 401                 if (allow_off_screen || (*row > MIN_ROW)) {
 402                         (*row)--;
 403                 }
 404                 break;
 405         case RIGHT:
 406                 if (allow_off_screen || (*col < (DCOLS-1))) {
 407                         (*col)++;
 408                 }
 409                 break;
 410         case UPLEFT:
 411                 if (allow_off_screen || ((*row > MIN_ROW) && (*col > 0))) {
 412                         (*row)--;
 413                         (*col)--;
 414                 }
 415                 break;
 416         case UPRIGHT:
 417                 if (allow_off_screen || ((*row > MIN_ROW) && (*col < (DCOLS-1)))) {
 418                         (*row)--;
 419                         (*col)++;
 420                 }
 421                 break;
 422         case DOWNRIGHT:
 423                 if (allow_off_screen || ((*row < (DROWS-2)) && (*col < (DCOLS-1)))) {
 424                         (*row)++;
 425                         (*col)++;
 426                 }
 427                 break;
 428         case DOWNLEFT:
 429                 if (allow_off_screen || ((*row < (DROWS-2)) && (*col > 0))) {
 430                         (*row)++;
 431                         (*col)--;
 432                 }
 433                 break;
 434         }
 435 }
 436
 437 int
 438 get_hit_chance(weapon)
 439         const object *weapon;
 440 {
 441         short hit_chance;
 442
 443         hit_chance = 40;
 444         hit_chance += 3 * to_hit(weapon);
 445         hit_chance += (((2 * rogue.exp) + (2 * ring_exp)) - r_rings);
 446         return(hit_chance);
 447 }
 448
 449 int
 450 get_weapon_damage(weapon)
 451         const object *weapon;
 452 {
 453         short damage;
 454
 455         damage = get_w_damage(weapon);
 456         damage += damage_for_strength();
 457         damage += ((((rogue.exp + ring_exp) - r_rings) + 1) / 2);
 458         return(damage);
 459 }
 460
 461 void
 462 s_con_mon(monster)
 463         object *monster;
 464 {
 465         if (con_mon) {
 466                 monster->m_flags |= CONFUSED;
 467                 monster->moves_confused += get_rand(12, 22);
 468                 message("the monster appears confused", 0);
 469                 con_mon = 0;
 470         }
 471 }