games/hack/hack.lev.c

   1 /*      $NetBSD: hack.lev.c,v 1.10 2009/06/07 18:30:39 dholland Exp $   */
   2
   3 /*
   4  * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
   5  * Amsterdam
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are
  10  * met:
  11  *
  12  * - Redistributions of source code must retain the above copyright notice,
  13  * this list of conditions and the following disclaimer.
  14  *
  15  * - 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  *
  19  * - Neither the name of the Stichting Centrum voor Wiskunde en
  20  * Informatica, nor the names of its contributors may be used to endorse or
  21  * promote products derived from this software without specific prior
  22  * written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  25  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  27  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  28  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  30  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  31  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  33  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  34  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
  39  * All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. The name of the author may not be used to endorse or promote products
  50  *    derived from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  53  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  54  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
  55  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  56  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  57  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  58  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  59  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  60  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  61  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  */
  63
  64 #include <sys/cdefs.h>
  65 #ifndef lint
  66 __RCSID("$NetBSD: hack.lev.c,v 1.10 2009/06/07 18:30:39 dholland Exp $");
  67 #endif                          /* not lint */
  68
  69 #include <stdlib.h>
  70 #include <unistd.h>
  71 #include "hack.h"
  72 #include "extern.h"
  73 #include "def.mkroom.h"
  74
  75 #ifndef NOWORM
  76 #include        "def.wseg.h"
  77 #endif                          /* NOWORM */
  78
  79 boolean         level_exists[MAXLEVEL + 1];
  80
  81 static void savegoldchn(int, struct gold *);
  82 static void savetrapchn(int, struct trap *);
  83
  84 void
  85 savelev(int fd, xchar lev)
  86 {
  87 #ifndef NOWORM
  88         struct wseg    *wtmp, *wtmp2;
  89         int tmp;
  90 #endif  /* NOWORM */
  91
  92         if (fd < 0)
  93                 panic("Save on bad file!");     /* impossible */
  94         if (lev >= 0 && lev <= MAXLEVEL)
  95                 level_exists[lev] = TRUE;
  96
  97         bwrite(fd, (char *) &hackpid, sizeof(hackpid));
  98         bwrite(fd, (char *) &lev, sizeof(lev));
  99         bwrite(fd, (char *) levl, sizeof(levl));
 100         bwrite(fd, (char *) &moves, sizeof(long));
 101         bwrite(fd, (char *) &xupstair, sizeof(xupstair));
 102         bwrite(fd, (char *) &yupstair, sizeof(yupstair));
 103         bwrite(fd, (char *) &xdnstair, sizeof(xdnstair));
 104         bwrite(fd, (char *) &ydnstair, sizeof(ydnstair));
 105         savemonchn(fd, fmon);
 106         savegoldchn(fd, fgold);
 107         savetrapchn(fd, ftrap);
 108         saveobjchn(fd, fobj);
 109         saveobjchn(fd, billobjs);
 110         billobjs = 0;
 111         save_engravings(fd);
 112 #ifndef QUEST
 113         bwrite(fd, (char *) rooms, sizeof(rooms));
 114         bwrite(fd, (char *) doors, sizeof(doors));
 115 #endif  /* QUEST */
 116         fgold = 0;
 117         ftrap = 0;
 118         fmon = 0;
 119         fobj = 0;
 120 #ifndef NOWORM
 121         bwrite(fd, (char *) wsegs, sizeof(wsegs));
 122         for (tmp = 1; tmp < 32; tmp++) {
 123                 for (wtmp = wsegs[tmp]; wtmp; wtmp = wtmp2) {
 124                         wtmp2 = wtmp->nseg;
 125                         bwrite(fd, (char *) wtmp, sizeof(struct wseg));
 126                 }
 127                 wsegs[tmp] = 0;
 128         }
 129         bwrite(fd, (char *) wgrowtime, sizeof(wgrowtime));
 130 #endif  /* NOWORM */
 131 }
 132
 133 void
 134 bwrite(int fd, const void *loc, size_t num)
 135 {
 136         /* lint wants the 3rd arg of write to be an int; lint -p an unsigned */
 137         if ((size_t)write(fd, loc, num) != num)
 138                 panic("cannot write %zu bytes to file #%d", num, fd);
 139 }
 140
 141 void
 142 saveobjchn(int fd, struct obj *otmp)
 143 {
 144         struct obj     *otmp2;
 145         unsigned        xl;
 146         int             minusone = -1;
 147
 148         while (otmp) {
 149                 otmp2 = otmp->nobj;
 150                 xl = otmp->onamelth;
 151                 bwrite(fd, (char *) &xl, sizeof(int));
 152                 bwrite(fd, (char *) otmp, xl + sizeof(struct obj));
 153                 free((char *) otmp);
 154                 otmp = otmp2;
 155         }
 156         bwrite(fd, (char *) &minusone, sizeof(int));
 157 }
 158
 159 void
 160 savemonchn(int fd, struct monst *mtmp)
 161 {
 162         struct monst   *mtmp2;
 163         unsigned        xl;
 164         int             minusone = -1;
 165         const struct permonst *monbegin = &mons[0];
 166
 167         bwrite(fd, &monbegin, sizeof(monbegin));
 168
 169         while (mtmp) {
 170                 mtmp2 = mtmp->nmon;
 171                 xl = mtmp->mxlth + mtmp->mnamelth;
 172                 bwrite(fd, (char *) &xl, sizeof(int));
 173                 bwrite(fd, (char *) mtmp, xl + sizeof(struct monst));
 174                 if (mtmp->minvent)
 175                         saveobjchn(fd, mtmp->minvent);
 176                 free((char *) mtmp);
 177                 mtmp = mtmp2;
 178         }
 179         bwrite(fd, (char *) &minusone, sizeof(int));
 180 }
 181
 182 static void
 183 savegoldchn(int fd, struct gold *gold)
 184 {
 185         struct gold    *gold2;
 186         while (gold) {
 187                 gold2 = gold->ngold;
 188                 bwrite(fd, (char *) gold, sizeof(struct gold));
 189                 free((char *) gold);
 190                 gold = gold2;
 191         }
 192         bwrite(fd, nul, sizeof(struct gold));
 193 }
 194
 195 static void
 196 savetrapchn(int fd, struct trap *trap)
 197 {
 198         struct trap    *trap2;
 199         while (trap) {
 200                 trap2 = trap->ntrap;
 201                 bwrite(fd, (char *) trap, sizeof(struct trap));
 202                 free((char *) trap);
 203                 trap = trap2;
 204         }
 205         bwrite(fd, nul, sizeof(struct trap));
 206 }
 207
 208 void
 209 getlev(int fd, int pid, xchar lev)
 210 {
 211         struct gold    *gold;
 212         struct trap    *trap;
 213 #ifndef NOWORM
 214         struct wseg    *wtmp;
 215 #endif  /* NOWORM */
 216         int             tmp;
 217         long            omoves;
 218         int             hpid;
 219         xchar           dlvl;
 220
 221         /* First some sanity checks */
 222         mread(fd, (char *) &hpid, sizeof(hpid));
 223         mread(fd, (char *) &dlvl, sizeof(dlvl));
 224         if ((pid && pid != hpid) || (lev && dlvl != lev)) {
 225                 pline("Strange, this map is not as I remember it.");
 226                 pline("Somebody is trying some trickery here ...");
 227                 pline("This game is void ...");
 228                 done("tricked");
 229         }
 230         fgold = 0;
 231         ftrap = 0;
 232         mread(fd, (char *) levl, sizeof(levl));
 233         mread(fd, (char *) &omoves, sizeof(omoves));
 234         mread(fd, (char *) &xupstair, sizeof(xupstair));
 235         mread(fd, (char *) &yupstair, sizeof(yupstair));
 236         mread(fd, (char *) &xdnstair, sizeof(xdnstair));
 237         mread(fd, (char *) &ydnstair, sizeof(ydnstair));
 238
 239         fmon = restmonchn(fd);
 240
 241         /* regenerate animals while on another level */
 242         {
 243                 long            tmoves = (moves > omoves) ? moves - omoves : 0;
 244                 struct monst   *mtmp, *mtmp2;
 245
 246                 for (mtmp = fmon; mtmp; mtmp = mtmp2) {
 247                         long            newhp;  /* tmoves may be very large */
 248
 249                         mtmp2 = mtmp->nmon;
 250                         if (strchr(genocided, mtmp->data->mlet)) {
 251                                 mondead(mtmp);
 252                                 continue;
 253                         }
 254                         if (mtmp->mtame && tmoves > 250) {
 255                                 mtmp->mtame = 0;
 256                                 mtmp->mpeaceful = 0;
 257                         }
 258                         newhp = mtmp->mhp +
 259                                 (strchr(MREGEN, mtmp->data->mlet) ? tmoves : tmoves / 20);
 260                         if (newhp > mtmp->mhpmax)
 261                                 mtmp->mhp = mtmp->mhpmax;
 262                         else
 263                                 mtmp->mhp = newhp;
 264                 }
 265         }
 266
 267         setgd();
 268         gold = newgold();
 269         mread(fd, (char *) gold, sizeof(struct gold));
 270         while (gold->gx) {
 271                 gold->ngold = fgold;
 272                 fgold = gold;
 273                 gold = newgold();
 274                 mread(fd, (char *) gold, sizeof(struct gold));
 275         }
 276         free((char *) gold);
 277         trap = newtrap();
 278         mread(fd, (char *) trap, sizeof(struct trap));
 279         while (trap->tx) {
 280                 trap->ntrap = ftrap;
 281                 ftrap = trap;
 282                 trap = newtrap();
 283                 mread(fd, (char *) trap, sizeof(struct trap));
 284         }
 285         free((char *) trap);
 286         fobj = restobjchn(fd);
 287         billobjs = restobjchn(fd);
 288         rest_engravings(fd);
 289 #ifndef QUEST
 290         mread(fd, (char *) rooms, sizeof(rooms));
 291         mread(fd, (char *) doors, sizeof(doors));
 292 #endif  /* QUEST */
 293 #ifndef NOWORM
 294         mread(fd, (char *) wsegs, sizeof(wsegs));
 295         for (tmp = 1; tmp < 32; tmp++)
 296                 if (wsegs[tmp]) {
 297                         wheads[tmp] = wsegs[tmp] = wtmp = newseg();
 298                         while (1) {
 299                                 mread(fd, (char *) wtmp, sizeof(struct wseg));
 300                                 if (!wtmp->nseg)
 301                                         break;
 302                                 wheads[tmp]->nseg = wtmp = newseg();
 303                                 wheads[tmp] = wtmp;
 304                         }
 305                 }
 306         mread(fd, (char *) wgrowtime, sizeof(wgrowtime));
 307 #endif  /* NOWORM */
 308 }
 309
 310 void
 311 mread(int fd, char *buf, unsigned len)
 312 {
 313         int             rlen;
 314
 315         rlen = read(fd, buf, len);
 316         if (rlen < 0 || (size_t)rlen != len) {
 317                 pline("Read %d instead of %u bytes.\n", rlen, len);
 318                 if (restoring) {
 319                         (void) unlink(SAVEF);
 320                         error("Error restoring old game.");
 321                 }
 322                 panic("Error reading level file.");
 323         }
 324 }
 325
 326 void
 327 mklev(void)
 328 {
 329         if (getbones())
 330                 return;
 331
 332         in_mklev = TRUE;
 333         makelevel();
 334         in_mklev = FALSE;
 335 }