games/rogue/ring.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  * @(#)ring.c   8.1 (Berkeley) 5/31/93
  33  * $FreeBSD: src/games/rogue/ring.c,v 1.3 1999/11/30 03:49:26 billf Exp $
  34  * $DragonFly: src/games/rogue/ring.c,v 1.3 2006/09/02 19:31:07 pavalos Exp $
  35  */
  36
  37 /*
  38  * ring.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 const char *left_or_right = "left or right hand?";
  52 const char *no_ring = "there's no ring on that hand";
  53 short stealthy;
  54 short r_rings;
  55 short add_strength;
  56 short e_rings;
  57 short regeneration;
  58 short ring_exp;
  59 short auto_search;
  60 boolean r_teleport;
  61 boolean r_see_invisible;
  62 boolean sustain_strength;
  63 boolean maintain_armor;
  64
  65 extern char *curse_message;
  66 extern boolean wizard;
  67
  68 void
  69 put_on_ring(void)
  70 {
  71         short ch;
  72         char desc[DCOLS];
  73         object *ring;
  74
  75         if (r_rings == 2) {
  76                 message("wearing two rings already", 0);
  77                 return;
  78         }
  79         if ((ch = pack_letter("put on what?", RING)) == CANCEL) {
  80                 return;
  81         }
  82         if (!(ring = get_letter_object(ch))) {
  83                 message("no such item.", 0);
  84                 return;
  85         }
  86         if (!(ring->what_is & RING)) {
  87                 message("that's not a ring", 0);
  88                 return;
  89         }
  90         if (ring->in_use_flags & (ON_LEFT_HAND | ON_RIGHT_HAND)) {
  91                 message("that ring is already being worn", 0);
  92                 return;
  93         }
  94         if (r_rings == 1) {
  95                 ch = (rogue.left_ring ? 'r' : 'l');
  96         } else {
  97                 message(left_or_right, 0);
  98                 do {
  99                         ch = rgetchar();
 100                 } while ((ch != CANCEL) && (ch != 'l') && (ch != 'r') && (ch != '\n') &&
 101                                 (ch != '\r'));
 102         }
 103         if ((ch != 'l') && (ch != 'r')) {
 104                 check_message();
 105                 return;
 106         }
 107         if (((ch == 'l') && rogue.left_ring)||((ch == 'r') && rogue.right_ring)) {
 108                 check_message();
 109                 message("there's already a ring on that hand", 0);
 110                 return;
 111         }
 112         if (ch == 'l') {
 113                 do_put_on(ring, 1);
 114         } else {
 115                 do_put_on(ring, 0);
 116         }
 117         ring_stats(1);
 118         check_message();
 119         get_desc(ring, desc);
 120         message(desc, 0);
 121         reg_move();
 122 }
 123
 124 /*
 125  * Do not call ring_stats() from within do_put_on().  It will cause
 126  * serious problems when do_put_on() is called from read_pack() in restore().
 127  */
 128
 129 void
 130 do_put_on(object *ring, boolean on_left)
 131 {
 132         if (on_left) {
 133                 ring->in_use_flags |= ON_LEFT_HAND;
 134                 rogue.left_ring = ring;
 135         } else {
 136                 ring->in_use_flags |= ON_RIGHT_HAND;
 137                 rogue.right_ring = ring;
 138         }
 139 }
 140
 141 void
 142 remove_ring(void)
 143 {
 144         boolean left = 0, right = 0;
 145         short ch;
 146         char buf[DCOLS];
 147         object *ring;
 148
 149         ring = NULL;
 150         if (r_rings == 0) {
 151                 inv_rings();
 152         } else if (rogue.left_ring && !rogue.right_ring) {
 153                 left = 1;
 154         } else if (!rogue.left_ring && rogue.right_ring) {
 155                 right = 1;
 156         } else {
 157                 message(left_or_right, 0);
 158                 do {
 159                         ch = rgetchar();
 160                 } while ((ch != CANCEL) && (ch != 'l') && (ch != 'r') &&
 161                         (ch != '\n') && (ch != '\r'));
 162                 left = (ch == 'l');
 163                 right = (ch == 'r');
 164                 check_message();
 165         }
 166         if (left || right) {
 167                 if (left) {
 168                         if (rogue.left_ring) {
 169                                 ring = rogue.left_ring;
 170                         } else {
 171                                 message(no_ring, 0);
 172                         }
 173                 } else {
 174                         if (rogue.right_ring) {
 175                                 ring = rogue.right_ring;
 176                         } else {
 177                                 message(no_ring, 0);
 178                         }
 179                 }
 180                 if (ring->is_cursed) {
 181                         message(curse_message, 0);
 182                 } else {
 183                         un_put_on(ring);
 184                         strcpy(buf, "removed ");
 185                         get_desc(ring, buf + 8);
 186                         message(buf, 0);
 187                         reg_move();
 188                 }
 189         }
 190 }
 191
 192 void
 193 un_put_on(object *ring)
 194 {
 195         if (ring && (ring->in_use_flags & ON_LEFT_HAND)) {
 196                 ring->in_use_flags &= (~ON_LEFT_HAND);
 197                 rogue.left_ring = NULL;
 198         } else if (ring && (ring->in_use_flags & ON_RIGHT_HAND)) {
 199                 ring->in_use_flags &= (~ON_RIGHT_HAND);
 200                 rogue.right_ring = NULL;
 201         }
 202         ring_stats(1);
 203 }
 204
 205 void
 206 gr_ring(object *ring, boolean assign_wk)
 207 {
 208         ring->what_is = RING;
 209         if (assign_wk) {
 210                 ring->which_kind = get_rand(0, (RINGS - 1));
 211         }
 212         ring->class = 0;
 213
 214         switch(ring->which_kind) {
 215         case R_TELEPORT:
 216                 ring->is_cursed = 1;
 217                 break;
 218         case ADD_STRENGTH:
 219         case DEXTERITY:
 220                 while ((ring->class = (get_rand(0, 4) - 2)) == 0)
 221                         ;
 222                 ring->is_cursed = (ring->class < 0);
 223                 break;
 224         case ADORNMENT:
 225                 ring->is_cursed = coin_toss();
 226                 break;
 227         }
 228 }
 229
 230 void
 231 inv_rings(void)
 232 {
 233         char buf[DCOLS];
 234
 235         if (r_rings == 0) {
 236                 message("not wearing any rings", 0);
 237         } else {
 238                 if (rogue.left_ring) {
 239                         get_desc(rogue.left_ring, buf);
 240                         message(buf, 0);
 241                 }
 242                 if (rogue.right_ring) {
 243                         get_desc(rogue.right_ring, buf);
 244                         message(buf, 0);
 245                 }
 246         }
 247         if (wizard) {
 248                 sprintf(buf, "ste %d, r_r %d, e_r %d, r_t %d, s_s %d, a_s %d, reg %d, r_e %d, s_i %d, m_a %d, aus %d",
 249                         stealthy, r_rings, e_rings, r_teleport, sustain_strength,
 250                         add_strength, regeneration, ring_exp, r_see_invisible,
 251                         maintain_armor, auto_search);
 252                 message(buf, 0);
 253         }
 254 }
 255
 256 void
 257 ring_stats(boolean pr)
 258 {
 259         short i;
 260         object *ring;
 261
 262         stealthy = 0;
 263         r_rings = 0;
 264         e_rings = 0;
 265         r_teleport = 0;
 266         sustain_strength = 0;
 267         add_strength = 0;
 268         regeneration = 0;
 269         ring_exp = 0;
 270         r_see_invisible = 0;
 271         maintain_armor = 0;
 272         auto_search = 0;
 273
 274         for (i = 0; i < 2; i++) {
 275                 if (!(ring = ((i == 0) ? rogue.left_ring : rogue.right_ring))) {
 276                         continue;
 277                 }
 278                 r_rings++;
 279                 e_rings++;
 280                 switch(ring->which_kind) {
 281                 case STEALTH:
 282                         stealthy++;
 283                         break;
 284                 case R_TELEPORT:
 285                         r_teleport = 1;
 286                         break;
 287                 case REGENERATION:
 288                         regeneration++;
 289                         break;
 290                 case SLOW_DIGEST:
 291                         e_rings -= 2;
 292                         break;
 293                 case ADD_STRENGTH:
 294                         add_strength += ring->class;
 295                         break;
 296                 case SUSTAIN_STRENGTH:
 297                         sustain_strength = 1;
 298                         break;
 299                 case DEXTERITY:
 300                         ring_exp += ring->class;
 301                         break;
 302                 case ADORNMENT:
 303                         break;
 304                 case R_SEE_INVISIBLE:
 305                         r_see_invisible = 1;
 306                         break;
 307                 case MAINTAIN_ARMOR:
 308                         maintain_armor = 1;
 309                         break;
 310                 case SEARCHING:
 311                         auto_search += 2;
 312                         break;
 313                 }
 314         }
 315         if (pr) {
 316                 print_stats(STAT_STRENGTH);
 317                 relight();
 318         }
 319 }