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 void
  82 savelev(int fd, xchar lev)
  83 {
  84 #ifndef NOWORM
  85         struct wseg    *wtmp, *wtmp2;
  86         int tmp;
  87 #endif  /* NOWORM */
  88
  89         if (fd < 0)
  90                 panic("Save on bad file!");     /* impossible */
  91         if (lev >= 0 && lev <= MAXLEVEL)
  92                 level_exists[lev] = TRUE;
  93
  94         bwrite(fd, (char *) &hackpid, sizeof(hackpid));
  95         bwrite(fd, (char *) &lev, sizeof(lev));
  96         bwrite(fd, (char *) levl, sizeof(levl));
  97         bwrite(fd, (char *) &moves, sizeof(long));
  98         bwrite(fd, (char *) &xupstair, sizeof(xupstair));
  99         bwrite(fd, (char *) &yupstair, sizeof(yupstair));
 100         bwrite(fd, (char *) &xdnstair, sizeof(xdnstair));
 101         bwrite(fd, (char *) &ydnstair, sizeof(ydnstair));
 102         savemonchn(fd, fmon);
 103         savegoldchn(fd, fgold);
 104         savetrapchn(fd, ftrap);
 105         saveobjchn(fd, fobj);
 106         saveobjchn(fd, billobjs);
 107         billobjs = 0;
 108         save_engravings(fd);
 109 #ifndef QUEST
 110         bwrite(fd, (char *) rooms, sizeof(rooms));
 111         bwrite(fd, (char *) doors, sizeof(doors));
 112 #endif  /* QUEST */
 113         fgold = 0;
 114         ftrap = 0;
 115         fmon = 0;
 116         fobj = 0;
 117 #ifndef NOWORM
 118         bwrite(fd, (char *) wsegs, sizeof(wsegs));
 119         for (tmp = 1; tmp < 32; tmp++) {
 120                 for (wtmp = wsegs[tmp]; wtmp; wtmp = wtmp2) {
 121                         wtmp2 = wtmp->nseg;
 122                         bwrite(fd, (char *) wtmp, sizeof(struct wseg));
 123                 }
 124                 wsegs[tmp] = 0;
 125         }
 126         bwrite(fd, (char *) wgrowtime, sizeof(wgrowtime));
 127 #endif  /* NOWORM */
 128 }
 129
 130 void
 131 bwrite(int fd, const void *loc, size_t num)
 132 {
 133         /* lint wants the 3rd arg of write to be an int; lint -p an unsigned */
 134         if ((size_t)write(fd, loc, num) != num)
 135                 panic("cannot write %zu bytes to file #%d", num, fd);
 136 }
 137
 138 void
 139 saveobjchn(int fd, struct obj *otmp)
 140 {
 141         struct obj     *otmp2;
 142         unsigned        xl;
 143         int             minusone = -1;
 144
 145         while (otmp) {
 146                 otmp2 = otmp->nobj;
 147                 xl = otmp->onamelth;
 148                 bwrite(fd, (char *) &xl, sizeof(int));
 149                 bwrite(fd, (char *) otmp, xl + sizeof(struct obj));
 150                 free((char *) otmp);
 151                 otmp = otmp2;
 152         }
 153         bwrite(fd, (char *) &minusone, sizeof(int));
 154 }
 155
 156 void
 157 savemonchn(int fd, struct monst *mtmp)
 158 {
 159         struct monst   *mtmp2;
 160         unsigned        xl;
 161         int             minusone = -1;
 162         const struct permonst *monbegin = &mons[0];
 163
 164         bwrite(fd, &monbegin, sizeof(monbegin));
 165
 166         while (mtmp) {
 167                 mtmp2 = mtmp->nmon;
 168                 xl = mtmp->mxlth + mtmp->mnamelth;
 169                 bwrite(fd, (char *) &xl, sizeof(int));
 170                 bwrite(fd, (char *) mtmp, xl + sizeof(struct monst));
 171                 if (mtmp->minvent)
 172                         saveobjchn(fd, mtmp->minvent);
 173                 free((char *) mtmp);
 174                 mtmp = mtmp2;
 175         }
 176         bwrite(fd, (char *) &minusone, sizeof(int));
 177 }
 178
 179 void
 180 savegoldchn(int fd, struct gold *gold)
 181 {
 182         struct gold    *gold2;
 183         while (gold) {
 184                 gold2 = gold->ngold;
 185                 bwrite(fd, (char *) gold, sizeof(struct gold));
 186                 free((char *) gold);
 187                 gold = gold2;
 188         }
 189         bwrite(fd, nul, sizeof(struct gold));
 190 }
 191
 192 void
 193 savetrapchn(int fd, struct trap *trap)
 194 {
 195         struct trap    *trap2;
 196         while (trap) {
 197                 trap2 = trap->ntrap;
 198                 bwrite(fd, (char *) trap, sizeof(struct trap));
 199                 free((char *) trap);
 200                 trap = trap2;
 201         }
 202         bwrite(fd, nul, sizeof(struct trap));
 203 }
 204
 205 void
 206 getlev(int fd, int pid, xchar lev)
 207 {
 208         struct gold    *gold;
 209         struct trap    *trap;
 210 #ifndef NOWORM
 211         struct wseg    *wtmp;
 212 #endif  /* NOWORM */
 213         int             tmp;
 214         long            omoves;
 215         int             hpid;
 216         xchar           dlvl;
 217
 218         /* First some sanity checks */
 219         mread(fd, (char *) &hpid, sizeof(hpid));
 220         mread(fd, (char *) &dlvl, sizeof(dlvl));
 221         if ((pid && pid != hpid) || (lev && dlvl != lev)) {
 222                 pline("Strange, this map is not as I remember it.");
 223                 pline("Somebody is trying some trickery here ...");
 224                 pline("This game is void ...");
 225                 done("tricked");
 226         }
 227         fgold = 0;
 228         ftrap = 0;
 229         mread(fd, (char *) levl, sizeof(levl));
 230         mread(fd, (char *) &omoves, sizeof(omoves));
 231         mread(fd, (char *) &xupstair, sizeof(xupstair));
 232         mread(fd, (char *) &yupstair, sizeof(yupstair));
 233         mread(fd, (char *) &xdnstair, sizeof(xdnstair));
 234         mread(fd, (char *) &ydnstair, sizeof(ydnstair));
 235
 236         fmon = restmonchn(fd);
 237
 238         /* regenerate animals while on another level */
 239         {
 240                 long            tmoves = (moves > omoves) ? moves - omoves : 0;
 241                 struct monst   *mtmp, *mtmp2;
 242
 243                 for (mtmp = fmon; mtmp; mtmp = mtmp2) {
 244                         long            newhp;  /* tmoves may be very large */
 245
 246                         mtmp2 = mtmp->nmon;
 247                         if (strchr(genocided, mtmp->data->mlet)) {
 248                                 mondead(mtmp);
 249                                 continue;
 250                         }
 251                         if (mtmp->mtame && tmoves > 250) {
 252                                 mtmp->mtame = 0;
 253                                 mtmp->mpeaceful = 0;
 254                         }
 255                         newhp = mtmp->mhp +
 256                                 (strchr(MREGEN, mtmp->data->mlet) ? tmoves : tmoves / 20);
 257                         if (newhp > mtmp->mhpmax)
 258                                 mtmp->mhp = mtmp->mhpmax;
 259                         else
 260                                 mtmp->mhp = newhp;
 261                 }
 262         }
 263
 264         setgd();
 265         gold = newgold();
 266         mread(fd, (char *) gold, sizeof(struct gold));
 267         while (gold->gx) {
 268                 gold->ngold = fgold;
 269                 fgold = gold;
 270                 gold = newgold();
 271                 mread(fd, (char *) gold, sizeof(struct gold));
 272         }
 273         free((char *) gold);
 274         trap = newtrap();
 275         mread(fd, (char *) trap, sizeof(struct trap));
 276         while (trap->tx) {
 277                 trap->ntrap = ftrap;
 278                 ftrap = trap;
 279                 trap = newtrap();
 280                 mread(fd, (char *) trap, sizeof(struct trap));
 281         }
 282         free((char *) trap);
 283         fobj = restobjchn(fd);
 284         billobjs = restobjchn(fd);
 285         rest_engravings(fd);
 286 #ifndef QUEST
 287         mread(fd, (char *) rooms, sizeof(rooms));
 288         mread(fd, (char *) doors, sizeof(doors));
 289 #endif  /* QUEST */
 290 #ifndef NOWORM
 291         mread(fd, (char *) wsegs, sizeof(wsegs));
 292         for (tmp = 1; tmp < 32; tmp++)
 293                 if (wsegs[tmp]) {
 294                         wheads[tmp] = wsegs[tmp] = wtmp = newseg();
 295                         while (1) {
 296                                 mread(fd, (char *) wtmp, sizeof(struct wseg));
 297                                 if (!wtmp->nseg)
 298                                         break;
 299                                 wheads[tmp]->nseg = wtmp = newseg();
 300                                 wheads[tmp] = wtmp;
 301                         }
 302                 }
 303         mread(fd, (char *) wgrowtime, sizeof(wgrowtime));
 304 #endif  /* NOWORM */
 305 }
 306
 307 void
 308 mread(int fd, char *buf, unsigned len)
 309 {
 310         int             rlen;
 311
 312         rlen = read(fd, buf, len);
 313         if (rlen < 0 || (size_t)rlen != len) {
 314                 pline("Read %d instead of %u bytes.\n", rlen, len);
 315                 if (restoring) {
 316                         (void) unlink(SAVEF);
 317                         error("Error restoring old game.");
 318                 }
 319                 panic("Error reading level file.");
 320         }
 321 }
 322
 323 void
 324 mklev(void)
 325 {
 326         if (getbones())
 327                 return;
 328
 329         in_mklev = TRUE;
 330         makelevel();
 331         in_mklev = FALSE;
 332 }