Source:NetHack 3.6.1/src/restore.c
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Below is the full text to restore.c from the source code of NetHack 3.6.1. To link to a particular line, write [[Source:NetHack 3.6.1/src/restore.c#line123]], for example.
Contents
- 1 Top of file
- 2 find_lev_obj
- 3 inven_inuse
- 4 restlevchn
- 5 restdamage
- 6 restobj
- 7 restobjchn
- 8 restmon
- 9 restmonchn
- 10 loadfruitchn
- 11 freefruitchn
- 12 ghostfruit
- 13 restgamestate
- 14 restlevelstate
- 15 restlevelfile
- 16 dorecover
- 17 restcemetery
- 18 rest_levl
- 19 trickery
- 20 getlev
- 21 get_plname_from_file
- 22 restore_msghistory
- 23 clear_id_mapping
- 24 add_id_mapping
- 25 lookup_id_mapping
- 26 reset_oattached_mids
- 27 restore_menu
- 28 minit
- 29 mread
- 30 validate
- 31 reset_restpref
- 32 set_restpref
- 33 zerocomp_mgetc
- 34 zerocomp_minit
- 35 zerocomp_mread
- 36 def_minit
- 37 def_mread
Top of file
/* NetHack 3.6 restore.c $NHDT-Date: 1451082255 2015/12/25 22:24:15 $ $NHDT-Branch: NetHack-3.6.0 $:$NHDT-Revision: 1.103 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Michael Allison, 2009. */
/* NetHack may be freely redistributed. See license for details. */The NetHack General Public License applies to screenshots, source code and other content from NetHack.
This content was modified from the original NetHack source code distribution (by splitting up NetHack content between wiki pages, and possibly further editing). See the page history for a list of who changed it, and on what dates.
#include "hack.h"
#include "lev.h"
#include "tcap.h" /* for TERMLIB and ASCIIGRAPH */
#if defined(MICRO)
extern int dotcnt; /* shared with save */
extern int dotrow; /* shared with save */
#endif
#ifdef USE_TILES
extern void FDECL(substitute_tiles, (d_level *)); /* from tile.c */
#endif
#ifdef ZEROCOMP
STATIC_DCL void NDECL(zerocomp_minit);
STATIC_DCL void FDECL(zerocomp_mread, (int, genericptr_t, unsigned int));
STATIC_DCL int NDECL(zerocomp_mgetc);
#endif
STATIC_DCL void NDECL(def_minit);
STATIC_DCL void FDECL(def_mread, (int, genericptr_t, unsigned int));
STATIC_DCL void NDECL(find_lev_obj);
STATIC_DCL void FDECL(restlevchn, (int));
STATIC_DCL void FDECL(restdamage, (int, BOOLEAN_P));
STATIC_DCL void FDECL(restobj, (int, struct obj *));
STATIC_DCL struct obj *FDECL(restobjchn, (int, BOOLEAN_P, BOOLEAN_P));
STATIC_OVL void FDECL(restmon, (int, struct monst *));
STATIC_DCL struct monst *FDECL(restmonchn, (int, BOOLEAN_P));
STATIC_DCL struct fruit *FDECL(loadfruitchn, (int));
STATIC_DCL void FDECL(freefruitchn, (struct fruit *));
STATIC_DCL void FDECL(ghostfruit, (struct obj *));
STATIC_DCL boolean
FDECL(restgamestate, (int, unsigned int *, unsigned int *));
STATIC_DCL void FDECL(restlevelstate, (unsigned int, unsigned int));
STATIC_DCL int FDECL(restlevelfile, (int, XCHAR_P));
STATIC_OVL void FDECL(restore_msghistory, (int));
STATIC_DCL void FDECL(reset_oattached_mids, (BOOLEAN_P));
STATIC_DCL void FDECL(rest_levl, (int, BOOLEAN_P));
static struct restore_procs {
const char *name;
int mread_flags;
void NDECL((*restore_minit));
void FDECL((*restore_mread), (int, genericptr_t, unsigned int));
void FDECL((*restore_bclose), (int));
} restoreprocs = {
#if !defined(ZEROCOMP) || (defined(COMPRESS) || defined(ZLIB_COMP))
"externalcomp", 0, def_minit, def_mread, def_bclose,
#else
"zerocomp", 0, zerocomp_minit, zerocomp_mread, zerocomp_bclose,
#endif
};
/*
* Save a mapping of IDs from ghost levels to the current level. This
* map is used by the timer routines when restoring ghost levels.
*/
#define N_PER_BUCKET 64
struct bucket {
struct bucket *next;
struct {
unsigned gid; /* ghost ID */
unsigned nid; /* new ID */
} map[N_PER_BUCKET];
};
STATIC_DCL void NDECL(clear_id_mapping);
STATIC_DCL void FDECL(add_id_mapping, (unsigned, unsigned));
static int n_ids_mapped = 0;
static struct bucket *id_map = 0;
#ifdef AMII_GRAPHICS
void FDECL(amii_setpens, (int)); /* use colors from save file */
extern int amii_numcolors;
#endif
#include "display.h"
boolean restoring = FALSE;
static NEARDATA struct fruit *oldfruit;
static NEARDATA long omoves;
#define Is_IceBox(o) ((o)->otyp == ICE_BOX ? TRUE : FALSE)
find_lev_obj
/* Recalculate level.objects[x][y], since this info was not saved. */
STATIC_OVL void
find_lev_obj()
{
register struct obj *fobjtmp = (struct obj *) 0;
register struct obj *otmp;
int x, y;
for (x = 0; x < COLNO; x++)
for (y = 0; y < ROWNO; y++)
level.objects[x][y] = (struct obj *) 0;
/*
* Reverse the entire fobj chain, which is necessary so that we can
* place the objects in the proper order. Make all obj in chain
* OBJ_FREE so place_object will work correctly.
*/
while ((otmp = fobj) != 0) {
fobj = otmp->nobj;
otmp->nobj = fobjtmp;
otmp->where = OBJ_FREE;
fobjtmp = otmp;
}
/* fobj should now be empty */
/* Set level.objects (as well as reversing the chain back again) */
while ((otmp = fobjtmp) != 0) {
fobjtmp = otmp->nobj;
place_object(otmp, otmp->ox, otmp->oy);
}
}
inven_inuse
/* Things that were marked "in_use" when the game was saved (ex. via the
* infamous "HUP" cheat) get used up here.
*/
void
inven_inuse(quietly)
boolean quietly;
{
register struct obj *otmp, *otmp2;
for (otmp = invent; otmp; otmp = otmp2) {
otmp2 = otmp->nobj;
if (otmp->in_use) {
if (!quietly)
pline("Finishing off %s...", xname(otmp));
useup(otmp);
}
}
}
restlevchn
STATIC_OVL void
restlevchn(fd)
register int fd;
{
int cnt;
s_level *tmplev, *x;
sp_levchn = (s_level *) 0;
mread(fd, (genericptr_t) &cnt, sizeof(int));
for (; cnt > 0; cnt--) {
tmplev = (s_level *) alloc(sizeof(s_level));
mread(fd, (genericptr_t) tmplev, sizeof(s_level));
if (!sp_levchn)
sp_levchn = tmplev;
else {
for (x = sp_levchn; x->next; x = x->next)
;
x->next = tmplev;
}
tmplev->next = (s_level *) 0;
}
}
restdamage
STATIC_OVL void
restdamage(fd, ghostly)
int fd;
boolean ghostly;
{
int counter;
struct damage *tmp_dam;
mread(fd, (genericptr_t) &counter, sizeof(counter));
if (!counter)
return;
tmp_dam = (struct damage *) alloc(sizeof(struct damage));
while (--counter >= 0) {
char damaged_shops[5], *shp = (char *) 0;
mread(fd, (genericptr_t) tmp_dam, sizeof(*tmp_dam));
if (ghostly)
tmp_dam->when += (monstermoves - omoves);
Strcpy(damaged_shops,
in_rooms(tmp_dam->place.x, tmp_dam->place.y, SHOPBASE));
if (u.uz.dlevel) {
/* when restoring, there are two passes over the current
* level. the first time, u.uz isn't set, so neither is
* shop_keeper(). just wait and process the damage on
* the second pass.
*/
for (shp = damaged_shops; *shp; shp++) {
struct monst *shkp = shop_keeper(*shp);
if (shkp && inhishop(shkp)
&& repair_damage(shkp, tmp_dam, TRUE))
break;
}
}
if (!shp || !*shp) {
tmp_dam->next = level.damagelist;
level.damagelist = tmp_dam;
tmp_dam = (struct damage *) alloc(sizeof(*tmp_dam));
}
}
free((genericptr_t) tmp_dam);
}
restobj
/* restore one object */
STATIC_OVL void
restobj(fd, otmp)
int fd;
struct obj *otmp;
{
int buflen;
mread(fd, (genericptr_t) otmp, sizeof(struct obj));
/* next object pointers are invalid; otmp->cobj needs to be left
as is--being non-null is key to restoring container contents */
otmp->nobj = otmp->nexthere = (struct obj *) 0;
/* non-null oextra needs to be reconstructed */
if (otmp->oextra) {
otmp->oextra = newoextra();
/* oname - object's name */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) { /* includes terminating '\0' */
new_oname(otmp, buflen);
mread(fd, (genericptr_t) ONAME(otmp), buflen);
}
/* omonst - corpse or statue might retain full monster details */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newomonst(otmp);
/* this is actually a monst struct, so we
can just defer to restmon() here */
restmon(fd, OMONST(otmp));
}
/* omid - monster id number, connecting corpse to ghost */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newomid(otmp);
mread(fd, (genericptr_t) OMID(otmp), buflen);
}
/* olong - temporary gold */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newolong(otmp);
mread(fd, (genericptr_t) OLONG(otmp), buflen);
}
/* omailcmd - feedback mechanism for scroll of mail */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
char *omailcmd = (char *) alloc(buflen);
mread(fd, (genericptr_t) omailcmd, buflen);
new_omailcmd(otmp, omailcmd);
free((genericptr_t) omailcmd);
}
}
}
restobjchn
STATIC_OVL struct obj *
restobjchn(fd, ghostly, frozen)
register int fd;
boolean ghostly, frozen;
{
register struct obj *otmp, *otmp2 = 0;
register struct obj *first = (struct obj *) 0;
int buflen;
while (1) {
mread(fd, (genericptr_t) &buflen, sizeof buflen);
if (buflen == -1)
break;
otmp = newobj();
restobj(fd, otmp);
if (!first)
first = otmp;
else
otmp2->nobj = otmp;
if (ghostly) {
unsigned nid = context.ident++;
add_id_mapping(otmp->o_id, nid);
otmp->o_id = nid;
}
if (ghostly && otmp->otyp == SLIME_MOLD)
ghostfruit(otmp);
/* Ghost levels get object age shifted from old player's clock
* to new player's clock. Assumption: new player arrived
* immediately after old player died.
*/
if (ghostly && !frozen && !age_is_relative(otmp))
otmp->age = monstermoves - omoves + otmp->age;
/* get contents of a container or statue */
if (Has_contents(otmp)) {
struct obj *otmp3;
otmp->cobj = restobjchn(fd, ghostly, Is_IceBox(otmp));
/* restore container back pointers */
for (otmp3 = otmp->cobj; otmp3; otmp3 = otmp3->nobj)
otmp3->ocontainer = otmp;
}
if (otmp->bypass)
otmp->bypass = 0;
if (!ghostly) {
/* fix the pointers */
if (otmp->o_id == context.victual.o_id)
context.victual.piece = otmp;
if (otmp->o_id == context.tin.o_id)
context.tin.tin = otmp;
if (otmp->o_id == context.spbook.o_id)
context.spbook.book = otmp;
}
otmp2 = otmp;
}
if (first && otmp2->nobj) {
impossible("Restobjchn: error reading objchn.");
otmp2->nobj = 0;
}
return first;
}
restmon
/* restore one monster */
STATIC_OVL void
restmon(fd, mtmp)
int fd;
struct monst *mtmp;
{
int buflen;
mread(fd, (genericptr_t) mtmp, sizeof(struct monst));
/* next monster pointer is invalid */
mtmp->nmon = (struct monst *) 0;
/* non-null mextra needs to be reconstructed */
if (mtmp->mextra) {
mtmp->mextra = newmextra();
/* mname - monster's name */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) { /* includes terminating '\0' */
new_mname(mtmp, buflen);
mread(fd, (genericptr_t) MNAME(mtmp), buflen);
}
/* egd - vault guard */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newegd(mtmp);
mread(fd, (genericptr_t) EGD(mtmp), sizeof(struct egd));
}
/* epri - temple priest */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newepri(mtmp);
mread(fd, (genericptr_t) EPRI(mtmp), sizeof(struct epri));
}
/* eshk - shopkeeper */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
neweshk(mtmp);
mread(fd, (genericptr_t) ESHK(mtmp), sizeof(struct eshk));
}
/* emin - minion */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newemin(mtmp);
mread(fd, (genericptr_t) EMIN(mtmp), sizeof(struct emin));
}
/* edog - pet */
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen > 0) {
newedog(mtmp);
mread(fd, (genericptr_t) EDOG(mtmp), sizeof(struct edog));
}
/* mcorpsenm - obj->corpsenm for mimic posing as corpse or
statue (inline int rather than pointer to something) */
mread(fd, (genericptr_t) &MCORPSENM(mtmp), sizeof MCORPSENM(mtmp));
} /* mextra */
}
restmonchn
STATIC_OVL struct monst *
restmonchn(fd, ghostly)
register int fd;
boolean ghostly;
{
register struct monst *mtmp, *mtmp2 = 0;
register struct monst *first = (struct monst *) 0;
int offset, buflen;
while (1) {
mread(fd, (genericptr_t) &buflen, sizeof(buflen));
if (buflen == -1)
break;
mtmp = newmonst();
restmon(fd, mtmp);
if (!first)
first = mtmp;
else
mtmp2->nmon = mtmp;
if (ghostly) {
unsigned nid = context.ident++;
add_id_mapping(mtmp->m_id, nid);
mtmp->m_id = nid;
}
offset = mtmp->mnum;
mtmp->data = &mons[offset];
if (ghostly) {
int mndx = monsndx(mtmp->data);
if (propagate(mndx, TRUE, ghostly) == 0) {
/* cookie to trigger purge in getbones() */
mtmp->mhpmax = DEFUNCT_MONSTER;
}
}
if (mtmp->minvent) {
struct obj *obj;
mtmp->minvent = restobjchn(fd, ghostly, FALSE);
/* restore monster back pointer */
for (obj = mtmp->minvent; obj; obj = obj->nobj)
obj->ocarry = mtmp;
}
if (mtmp->mw) {
struct obj *obj;
for (obj = mtmp->minvent; obj; obj = obj->nobj)
if (obj->owornmask & W_WEP)
break;
if (obj)
mtmp->mw = obj;
else {
MON_NOWEP(mtmp);
impossible("bad monster weapon restore");
}
}
if (mtmp->isshk)
restshk(mtmp, ghostly);
if (mtmp->ispriest)
restpriest(mtmp, ghostly);
if (!ghostly) {
if (mtmp->m_id == context.polearm.m_id)
context.polearm.hitmon = mtmp;
}
mtmp2 = mtmp;
}
if (first && mtmp2->nmon) {
impossible("Restmonchn: error reading monchn.");
mtmp2->nmon = 0;
}
return first;
}
loadfruitchn
STATIC_OVL struct fruit *
loadfruitchn(fd)
int fd;
{
register struct fruit *flist, *fnext;
flist = 0;
while (fnext = newfruit(), mread(fd, (genericptr_t) fnext, sizeof *fnext),
fnext->fid != 0) {
fnext->nextf = flist;
flist = fnext;
}
dealloc_fruit(fnext);
return flist;
}
freefruitchn
STATIC_OVL void
freefruitchn(flist)
register struct fruit *flist;
{
register struct fruit *fnext;
while (flist) {
fnext = flist->nextf;
dealloc_fruit(flist);
flist = fnext;
}
}
ghostfruit
STATIC_OVL void
ghostfruit(otmp)
register struct obj *otmp;
{
register struct fruit *oldf;
for (oldf = oldfruit; oldf; oldf = oldf->nextf)
if (oldf->fid == otmp->spe)
break;
if (!oldf)
impossible("no old fruit?");
else
otmp->spe = fruitadd(oldf->fname, (struct fruit *) 0);
}
#ifdef SYSCF
#define SYSOPT_CHECK_SAVE_UID sysopt.check_save_uid
#else
#define SYSOPT_CHECK_SAVE_UID TRUE
#endif
restgamestate
STATIC_OVL
boolean
restgamestate(fd, stuckid, steedid)
register int fd;
unsigned int *stuckid, *steedid;
{
struct flag newgameflags;
#ifdef SYSFLAGS
struct sysflag newgamesysflags;
#endif
struct obj *otmp, *tmp_bc;
char timebuf[15];
unsigned long uid;
mread(fd, (genericptr_t) &uid, sizeof uid);
if (SYSOPT_CHECK_SAVE_UID
&& uid != (unsigned long) getuid()) { /* strange ... */
/* for wizard mode, issue a reminder; for others, treat it
as an attempt to cheat and refuse to restore this file */
pline("Saved game was not yours.");
if (!wizard)
return FALSE;
}
mread(fd, (genericptr_t) &context, sizeof(struct context_info));
if (context.warntype.speciesidx >= LOW_PM)
context.warntype.species = &mons[context.warntype.speciesidx];
/* we want to be able to revert to command line/environment/config
file option values instead of keeping old save file option values
if partial restore fails and we resort to starting a new game */
newgameflags = flags;
mread(fd, (genericptr_t) &flags, sizeof(struct flag));
/* wizard and discover are actually flags.debug and flags.explore;
player might be overriding the save file values for them;
in the discover case, we don't want to set that for a normal
game until after the save file has been removed */
iflags.deferred_X = (newgameflags.explore && !discover);
if (newgameflags.debug) {
/* authorized by startup code; wizard mode exists and is allowed */
wizard = TRUE, discover = iflags.deferred_X = FALSE;
} else if (wizard) {
/* specified by save file; check authorization now */
set_playmode();
}
#ifdef SYSFLAGS
newgamesysflags = sysflags;
mread(fd, (genericptr_t) &sysflags, sizeof(struct sysflag));
#endif
role_init(); /* Reset the initial role, race, gender, and alignment */
#ifdef AMII_GRAPHICS
amii_setpens(amii_numcolors); /* use colors from save file */
#endif
mread(fd, (genericptr_t) &u, sizeof(struct you));
#define ReadTimebuf(foo) \
mread(fd, (genericptr_t) timebuf, 14); \
timebuf[14] = '\0'; \
foo = time_from_yyyymmddhhmmss(timebuf);
ReadTimebuf(ubirthday);
mread(fd, &urealtime.realtime, sizeof urealtime.realtime);
ReadTimebuf(urealtime.start_timing); /** [not used] **/
/* current time is the time to use for next urealtime.realtime update */
urealtime.start_timing = getnow();
set_uasmon();
#ifdef CLIPPING
cliparound(u.ux, u.uy);
#endif
if (u.uhp <= 0 && (!Upolyd || u.mh <= 0)) {
u.ux = u.uy = 0; /* affects pline() [hence You()] */
You("were not healthy enough to survive restoration.");
/* wiz1_level.dlevel is used by mklev.c to see if lots of stuff is
* uninitialized, so we only have to set it and not the other stuff.
*/
wiz1_level.dlevel = 0;
u.uz.dnum = 0;
u.uz.dlevel = 1;
/* revert to pre-restore option settings */
iflags.deferred_X = FALSE;
flags = newgameflags;
#ifdef SYSFLAGS
sysflags = newgamesysflags;
#endif
return FALSE;
}
/* in case hangup save occurred in midst of level change */
assign_level(&u.uz0, &u.uz);
/* this stuff comes after potential aborted restore attempts */
restore_killers(fd);
restore_timers(fd, RANGE_GLOBAL, FALSE, 0L);
restore_light_sources(fd);
invent = restobjchn(fd, FALSE, FALSE);
/* tmp_bc only gets set here if the ball & chain were orphaned
because you were swallowed; otherwise they will be on the floor
or in your inventory */
tmp_bc = restobjchn(fd, FALSE, FALSE);
if (tmp_bc) {
for (otmp = tmp_bc; otmp; otmp = otmp->nobj) {
if (otmp->owornmask)
setworn(otmp, otmp->owornmask);
}
if (!uball || !uchain)
impossible("restgamestate: lost ball & chain");
}
migrating_objs = restobjchn(fd, FALSE, FALSE);
migrating_mons = restmonchn(fd, FALSE);
mread(fd, (genericptr_t) mvitals, sizeof(mvitals));
/*
* There are some things after this that can have unintended display
* side-effects too early in the game.
* Disable see_monsters() here, re-enable it at the top of moveloop()
*/
defer_see_monsters = TRUE;
/* this comes after inventory has been loaded */
for (otmp = invent; otmp; otmp = otmp->nobj)
if (otmp->owornmask)
setworn(otmp, otmp->owornmask);
/* reset weapon so that player will get a reminder about "bashing"
during next fight when bare-handed or wielding an unconventional
item; for pick-axe, we aren't able to distinguish between having
applied or wielded it, so be conservative and assume the former */
otmp = uwep; /* `uwep' usually init'd by setworn() in loop above */
uwep = 0; /* clear it and have setuwep() reinit */
setuwep(otmp); /* (don't need any null check here) */
if (!uwep || uwep->otyp == PICK_AXE || uwep->otyp == GRAPPLING_HOOK)
unweapon = TRUE;
restore_dungeon(fd);
restlevchn(fd);
mread(fd, (genericptr_t) &moves, sizeof moves);
mread(fd, (genericptr_t) &monstermoves, sizeof monstermoves);
mread(fd, (genericptr_t) &quest_status, sizeof(struct q_score));
mread(fd, (genericptr_t) spl_book, sizeof(struct spell) * (MAXSPELL + 1));
restore_artifacts(fd);
restore_oracles(fd);
if (u.ustuck)
mread(fd, (genericptr_t) stuckid, sizeof(*stuckid));
if (u.usteed)
mread(fd, (genericptr_t) steedid, sizeof(*steedid));
mread(fd, (genericptr_t) pl_character, sizeof pl_character);
mread(fd, (genericptr_t) pl_fruit, sizeof pl_fruit);
freefruitchn(ffruit); /* clean up fruit(s) made by initoptions() */
ffruit = loadfruitchn(fd);
restnames(fd);
restore_waterlevel(fd);
restore_msghistory(fd);
/* must come after all mons & objs are restored */
relink_timers(FALSE);
relink_light_sources(FALSE);
return TRUE;
}
restlevelstate
/* update game state pointers to those valid for the current level (so we
* don't dereference a wild u.ustuck when saving the game state, for instance)
*/
STATIC_OVL void
restlevelstate(stuckid, steedid)
unsigned int stuckid, steedid;
{
register struct monst *mtmp;
if (stuckid) {
for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
if (mtmp->m_id == stuckid)
break;
if (!mtmp)
panic("Cannot find the monster ustuck.");
u.ustuck = mtmp;
}
if (steedid) {
for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
if (mtmp->m_id == steedid)
break;
if (!mtmp)
panic("Cannot find the monster usteed.");
u.usteed = mtmp;
remove_monster(mtmp->mx, mtmp->my);
}
}
/*ARGSUSED*/restlevelfile
STATIC_OVL int
restlevelfile(fd, ltmp)
int fd; /* fd used in MFLOPPY only */
xchar ltmp;
{
int nfd;
char whynot[BUFSZ];
#ifndef MFLOPPY
nhUse(fd);
#endif
nfd = create_levelfile(ltmp, whynot);
if (nfd < 0) {
/* BUG: should suppress any attempt to write a panic
save file if file creation is now failing... */
panic("restlevelfile: %s", whynot);
}
#ifdef MFLOPPY
if (!savelev(nfd, ltmp, COUNT_SAVE)) {
/* The savelev can't proceed because the size required
* is greater than the available disk space.
*/
pline("Not enough space on `%s' to restore your game.", levels);
/* Remove levels and bones that may have been created.
*/
(void) nhclose(nfd);
#ifdef AMIGA
clearlocks();
#else /* !AMIGA */
eraseall(levels, alllevels);
eraseall(levels, allbones);
/* Perhaps the person would like to play without a
* RAMdisk.
*/
if (ramdisk) {
/* PlaywoRAMdisk may not return, but if it does
* it is certain that ramdisk will be 0.
*/
playwoRAMdisk();
/* Rewind save file and try again */
(void) lseek(fd, (off_t) 0, 0);
(void) validate(fd, (char *) 0); /* skip version etc */
return dorecover(fd); /* 0 or 1 */
}
#endif /* ?AMIGA */
pline("Be seeing you...");
nh_terminate(EXIT_SUCCESS);
}
#endif /* MFLOPPY */
bufon(nfd);
savelev(nfd, ltmp, WRITE_SAVE | FREE_SAVE);
bclose(nfd);
return 2;
}
dorecover
int
dorecover(fd)
register int fd;
{
unsigned int stuckid = 0, steedid = 0; /* not a register */
xchar ltmp;
int rtmp;
struct obj *otmp;
restoring = TRUE;
get_plname_from_file(fd, plname);
getlev(fd, 0, (xchar) 0, FALSE);
if (!restgamestate(fd, &stuckid, &steedid)) {
display_nhwindow(WIN_MESSAGE, TRUE);
savelev(-1, 0, FREE_SAVE); /* discard current level */
(void) nhclose(fd);
(void) delete_savefile();
restoring = FALSE;
return 0;
}
restlevelstate(stuckid, steedid);
#ifdef INSURANCE
savestateinlock();
#endif
rtmp = restlevelfile(fd, ledger_no(&u.uz));
if (rtmp < 2)
return rtmp; /* dorecover called recursively */
/* these pointers won't be valid while we're processing the
* other levels, but they'll be reset again by restlevelstate()
* afterwards, and in the meantime at least u.usteed may mislead
* place_monster() on other levels
*/
u.ustuck = (struct monst *) 0;
u.usteed = (struct monst *) 0;
#ifdef MICRO
#ifdef AMII_GRAPHICS
{
extern struct window_procs amii_procs;
if (windowprocs.win_init_nhwindows == amii_procs.win_init_nhwindows) {
extern winid WIN_BASE;
clear_nhwindow(WIN_BASE); /* hack until there's a hook for this */
}
}
#else
clear_nhwindow(WIN_MAP);
#endif
clear_nhwindow(WIN_MESSAGE);
You("return to level %d in %s%s.", depth(&u.uz),
dungeons[u.uz.dnum].dname,
flags.debug ? " while in debug mode"
: flags.explore ? " while in explore mode" : "");
curs(WIN_MAP, 1, 1);
dotcnt = 0;
dotrow = 2;
if (strncmpi("X11", windowprocs.name, 3))
putstr(WIN_MAP, 0, "Restoring:");
#endif
restoreprocs.mread_flags = 1; /* return despite error */
while (1) {
mread(fd, (genericptr_t) <mp, sizeof ltmp);
if (restoreprocs.mread_flags == -1)
break;
getlev(fd, 0, ltmp, FALSE);
#ifdef MICRO
curs(WIN_MAP, 1 + dotcnt++, dotrow);
if (dotcnt >= (COLNO - 1)) {
dotrow++;
dotcnt = 0;
}
if (strncmpi("X11", windowprocs.name, 3)) {
putstr(WIN_MAP, 0, ".");
}
mark_synch();
#endif
rtmp = restlevelfile(fd, ltmp);
if (rtmp < 2)
return rtmp; /* dorecover called recursively */
}
restoreprocs.mread_flags = 0;
#ifdef BSD
(void) lseek(fd, 0L, 0);
#else
(void) lseek(fd, (off_t) 0, 0);
#endif
(void) validate(fd, (char *) 0); /* skip version and savefile info */
get_plname_from_file(fd, plname);
getlev(fd, 0, (xchar) 0, FALSE);
(void) nhclose(fd);
/* Now set the restore settings to match the
* settings used by the save file output routines
*/
reset_restpref();
restlevelstate(stuckid, steedid);
program_state.something_worth_saving = 1; /* useful data now exists */
if (!wizard && !discover)
(void) delete_savefile();
if (Is_rogue_level(&u.uz))
assign_graphics(ROGUESET);
#ifdef USE_TILES
substitute_tiles(&u.uz);
#endif
#ifdef MFLOPPY
gameDiskPrompt();
#endif
max_rank_sz(); /* to recompute mrank_sz (botl.c) */
/* take care of iron ball & chain */
for (otmp = fobj; otmp; otmp = otmp->nobj)
if (otmp->owornmask)
setworn(otmp, otmp->owornmask);
/* in_use processing must be after:
* + The inventory has been read so that freeinv() works.
* + The current level has been restored so billing information
* is available.
*/
inven_inuse(FALSE);
load_qtlist(); /* re-load the quest text info */
/* Set up the vision internals, after levl[] data is loaded
but before docrt(). */
reglyph_darkroom();
vision_reset();
vision_full_recalc = 1; /* recompute vision (not saved) */
run_timers(); /* expire all timers that have gone off while away */
docrt();
restoring = FALSE;
clear_nhwindow(WIN_MESSAGE);
/* Success! */
welcome(FALSE);
check_special_room(FALSE);
return 1;
}
restcemetery
void
restcemetery(fd, cemeteryaddr)
int fd;
struct cemetery **cemeteryaddr;
{
struct cemetery *bonesinfo, **bonesaddr;
int flag;
mread(fd, (genericptr_t) &flag, sizeof flag);
if (flag == 0) {
bonesaddr = cemeteryaddr;
do {
bonesinfo = (struct cemetery *) alloc(sizeof *bonesinfo);
mread(fd, (genericptr_t) bonesinfo, sizeof *bonesinfo);
*bonesaddr = bonesinfo;
bonesaddr = &(*bonesaddr)->next;
} while (*bonesaddr);
} else {
*cemeteryaddr = 0;
}
}
/*ARGSUSED*/rest_levl
STATIC_OVL void
rest_levl(fd, rlecomp)
int fd;
boolean rlecomp;
{
#ifdef RLECOMP
short i, j;
uchar len;
struct rm r;
if (rlecomp) {
(void) memset((genericptr_t) &r, 0, sizeof(r));
i = 0;
j = 0;
len = 0;
while (i < ROWNO) {
while (j < COLNO) {
if (len > 0) {
levl[j][i] = r;
len -= 1;
j += 1;
} else {
mread(fd, (genericptr_t) &len, sizeof(uchar));
mread(fd, (genericptr_t) &r, sizeof(struct rm));
}
}
j = 0;
i += 1;
}
return;
}
#else /* !RLECOMP */
nhUse(rlecomp);
#endif /* ?RLECOMP */
mread(fd, (genericptr_t) levl, sizeof levl);
}
trickery
void
trickery(reason)
char *reason;
{
pline("Strange, this map is not as I remember it.");
pline("Somebody is trying some trickery here...");
pline("This game is void.");
Strcpy(killer.name, reason ? reason : "");
done(TRICKED);
}
getlev
void
getlev(fd, pid, lev, ghostly)
int fd, pid;
xchar lev;
boolean ghostly;
{
register struct trap *trap;
register struct monst *mtmp;
long elapsed;
branch *br;
int hpid;
xchar dlvl;
int x, y;
#ifdef TOS
short tlev;
#endif
if (ghostly)
clear_id_mapping();
#if defined(MSDOS) || defined(OS2)
setmode(fd, O_BINARY);
#endif
/* Load the old fruit info. We have to do it first, so the
* information is available when restoring the objects.
*/
if (ghostly)
oldfruit = loadfruitchn(fd);
/* First some sanity checks */
mread(fd, (genericptr_t) &hpid, sizeof(hpid));
/* CHECK: This may prevent restoration */
#ifdef TOS
mread(fd, (genericptr_t) &tlev, sizeof(tlev));
dlvl = tlev & 0x00ff;
#else
mread(fd, (genericptr_t) &dlvl, sizeof(dlvl));
#endif
if ((pid && pid != hpid) || (lev && dlvl != lev)) {
char trickbuf[BUFSZ];
if (pid && pid != hpid)
Sprintf(trickbuf, "PID (%d) doesn't match saved PID (%d)!", hpid,
pid);
else
Sprintf(trickbuf, "This is level %d, not %d!", dlvl, lev);
if (wizard)
pline1(trickbuf);
trickery(trickbuf);
}
restcemetery(fd, &level.bonesinfo);
rest_levl(fd,
(boolean) ((sfrestinfo.sfi1 & SFI1_RLECOMP) == SFI1_RLECOMP));
mread(fd, (genericptr_t) lastseentyp, sizeof(lastseentyp));
mread(fd, (genericptr_t) &omoves, sizeof(omoves));
elapsed = monstermoves - omoves;
mread(fd, (genericptr_t) &upstair, sizeof(stairway));
mread(fd, (genericptr_t) &dnstair, sizeof(stairway));
mread(fd, (genericptr_t) &upladder, sizeof(stairway));
mread(fd, (genericptr_t) &dnladder, sizeof(stairway));
mread(fd, (genericptr_t) &sstairs, sizeof(stairway));
mread(fd, (genericptr_t) &updest, sizeof(dest_area));
mread(fd, (genericptr_t) &dndest, sizeof(dest_area));
mread(fd, (genericptr_t) &level.flags, sizeof(level.flags));
mread(fd, (genericptr_t) doors, sizeof(doors));
rest_rooms(fd); /* No joke :-) */
if (nroom)
doorindex = rooms[nroom - 1].fdoor + rooms[nroom - 1].doorct;
else
doorindex = 0;
restore_timers(fd, RANGE_LEVEL, ghostly, elapsed);
restore_light_sources(fd);
fmon = restmonchn(fd, ghostly);
rest_worm(fd); /* restore worm information */
ftrap = 0;
while (trap = newtrap(),
mread(fd, (genericptr_t) trap, sizeof(struct trap)),
trap->tx != 0) { /* need "!= 0" to work around DICE 3.0 bug */
trap->ntrap = ftrap;
ftrap = trap;
}
dealloc_trap(trap);
fobj = restobjchn(fd, ghostly, FALSE);
find_lev_obj();
/* restobjchn()'s `frozen' argument probably ought to be a callback
routine so that we can check for objects being buried under ice */
level.buriedobjlist = restobjchn(fd, ghostly, FALSE);
billobjs = restobjchn(fd, ghostly, FALSE);
rest_engravings(fd);
/* reset level.monsters for new level */
for (x = 0; x < COLNO; x++)
for (y = 0; y < ROWNO; y++)
level.monsters[x][y] = (struct monst *) 0;
for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
if (mtmp->isshk)
set_residency(mtmp, FALSE);
place_monster(mtmp, mtmp->mx, mtmp->my);
if (mtmp->wormno)
place_wsegs(mtmp);
/* regenerate monsters while on another level */
if (!u.uz.dlevel)
continue;
if (ghostly) {
/* reset peaceful/malign relative to new character;
shopkeepers will reset based on name */
if (!mtmp->isshk)
mtmp->mpeaceful =
(is_unicorn(mtmp->data)
&& sgn(u.ualign.type) == sgn(mtmp->data->maligntyp))
? TRUE
: peace_minded(mtmp->data);
set_malign(mtmp);
} else if (elapsed > 0L) {
mon_catchup_elapsed_time(mtmp, elapsed);
}
/* update shape-changers in case protection against
them is different now than when the level was saved */
restore_cham(mtmp);
/* give hiders a chance to hide before their next move */
if (ghostly || elapsed > (long) rnd(10))
hide_monst(mtmp);
}
restdamage(fd, ghostly);
rest_regions(fd, ghostly);
if (ghostly) {
/* Now get rid of all the temp fruits... */
freefruitchn(oldfruit), oldfruit = 0;
if (lev > ledger_no(&medusa_level)
&& lev < ledger_no(&stronghold_level) && xdnstair == 0) {
coord cc;
mazexy(&cc);
xdnstair = cc.x;
ydnstair = cc.y;
levl[cc.x][cc.y].typ = STAIRS;
}
br = Is_branchlev(&u.uz);
if (br && u.uz.dlevel == 1) {
d_level ltmp;
if (on_level(&u.uz, &br->end1))
assign_level(<mp, &br->end2);
else
assign_level(<mp, &br->end1);
switch (br->type) {
case BR_STAIR:
case BR_NO_END1:
case BR_NO_END2: /* OK to assign to sstairs if it's not used */
assign_level(&sstairs.tolev, <mp);
break;
case BR_PORTAL: /* max of 1 portal per level */
for (trap = ftrap; trap; trap = trap->ntrap)
if (trap->ttyp == MAGIC_PORTAL)
break;
if (!trap)
panic("getlev: need portal but none found");
assign_level(&trap->dst, <mp);
break;
}
} else if (!br) {
struct trap *ttmp = 0;
/* Remove any dangling portals. */
for (trap = ftrap; trap; trap = ttmp) {
ttmp = trap->ntrap;
if (trap->ttyp == MAGIC_PORTAL)
deltrap(trap);
}
}
}
/* must come after all mons & objs are restored */
relink_timers(ghostly);
relink_light_sources(ghostly);
reset_oattached_mids(ghostly);
if (ghostly)
clear_id_mapping();
}
get_plname_from_file
void
get_plname_from_file(fd, plbuf)
int fd;
char *plbuf;
{
int pltmpsiz = 0;
(void) read(fd, (genericptr_t) &pltmpsiz, sizeof(pltmpsiz));
(void) read(fd, (genericptr_t) plbuf, pltmpsiz);
return;
}
restore_msghistory
STATIC_OVL void
restore_msghistory(fd)
register int fd;
{
int msgsize, msgcount = 0;
char msg[BUFSZ];
while (1) {
mread(fd, (genericptr_t) &msgsize, sizeof(msgsize));
if (msgsize == -1)
break;
if (msgsize > (BUFSZ - 1))
panic("restore_msghistory: msg too big (%d)", msgsize);
mread(fd, (genericptr_t) msg, msgsize);
msg[msgsize] = '\0';
putmsghistory(msg, TRUE);
++msgcount;
}
if (msgcount)
putmsghistory((char *) 0, TRUE);
debugpline1("Read %d messages from savefile.", msgcount);
}
clear_id_mapping
/* Clear all structures for object and monster ID mapping. */
STATIC_OVL void
clear_id_mapping()
{
struct bucket *curr;
while ((curr = id_map) != 0) {
id_map = curr->next;
free((genericptr_t) curr);
}
n_ids_mapped = 0;
}
add_id_mapping
/* Add a mapping to the ID map. */
STATIC_OVL void
add_id_mapping(gid, nid)
unsigned gid, nid;
{
int idx;
idx = n_ids_mapped % N_PER_BUCKET;
/* idx is zero on first time through, as well as when a new bucket is */
/* needed */
if (idx == 0) {
struct bucket *gnu = (struct bucket *) alloc(sizeof(struct bucket));
gnu->next = id_map;
id_map = gnu;
}
id_map->map[idx].gid = gid;
id_map->map[idx].nid = nid;
n_ids_mapped++;
}
lookup_id_mapping
/*
* Global routine to look up a mapping. If found, return TRUE and fill
* in the new ID value. Otherwise, return false and return -1 in the new
* ID.
*/
boolean
lookup_id_mapping(gid, nidp)
unsigned gid, *nidp;
{
int i;
struct bucket *curr;
if (n_ids_mapped)
for (curr = id_map; curr; curr = curr->next) {
/* first bucket might not be totally full */
if (curr == id_map) {
i = n_ids_mapped % N_PER_BUCKET;
if (i == 0)
i = N_PER_BUCKET;
} else
i = N_PER_BUCKET;
while (--i >= 0)
if (gid == curr->map[i].gid) {
*nidp = curr->map[i].nid;
return TRUE;
}
}
return FALSE;
}
reset_oattached_mids
STATIC_OVL void
reset_oattached_mids(ghostly)
boolean ghostly;
{
struct obj *otmp;
unsigned oldid, nid;
for (otmp = fobj; otmp; otmp = otmp->nobj) {
if (ghostly && has_omonst(otmp)) {
struct monst *mtmp = OMONST(otmp);
mtmp->m_id = 0;
mtmp->mpeaceful = mtmp->mtame = 0; /* pet's owner died! */
}
if (ghostly && has_omid(otmp)) {
(void) memcpy((genericptr_t) &oldid, (genericptr_t) OMID(otmp),
sizeof(oldid));
if (lookup_id_mapping(oldid, &nid))
(void) memcpy((genericptr_t) OMID(otmp), (genericptr_t) &nid,
sizeof(nid));
else
free_omid(otmp);
}
}
}
#ifdef SELECTSAVED
/* put up a menu listing each character from this player's saved games;
returns 1: use plname[], 0: new game, -1: quit */
int
restore_menu(bannerwin)
winid bannerwin; /* if not WIN_ERR, clear window and show copyright in menu */
{
winid tmpwin;
anything any;
char **saved;
menu_item *chosen_game = (menu_item *) 0;
int k, clet, ch = 0; /* ch: 0 => new game */
*plname = '\0';
saved = get_saved_games(); /* array of character names */
if (saved && *saved) {
tmpwin = create_nhwindow(NHW_MENU);
start_menu(tmpwin);
any = zeroany; /* no selection */
if (bannerwin != WIN_ERR) {
/* for tty; erase copyright notice and redo it in the menu */
clear_nhwindow(bannerwin);
/* COPYRIGHT_BANNER_[ABCD] */
for (k = 1; k <= 4; ++k)
add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
copyright_banner_line(k), MENU_UNSELECTED);
add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, "",
MENU_UNSELECTED);
}
add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
"Select one of your saved games", MENU_UNSELECTED);
for (k = 0; saved[k]; ++k) {
any.a_int = k + 1;
add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, saved[k],
MENU_UNSELECTED);
}
clet = (k <= 'n' - 'a') ? 'n' : 0; /* new game */
any.a_int = -1; /* not >= 0 */
add_menu(tmpwin, NO_GLYPH, &any, clet, 0, ATR_NONE,
"Start a new character", MENU_UNSELECTED);
clet = (k + 1 <= 'q' - 'a') ? 'q' : 0; /* quit */
any.a_int = -2;
add_menu(tmpwin, NO_GLYPH, &any, clet, 0, ATR_NONE,
"Never mind (quit)", MENU_SELECTED);
/* no prompt on end_menu, as we've done our own at the top */
end_menu(tmpwin, (char *) 0);
if (select_menu(tmpwin, PICK_ONE, &chosen_game) > 0) {
ch = chosen_game->item.a_int;
if (ch > 0)
Strcpy(plname, saved[ch - 1]);
else if (ch < 0)
++ch; /* -1 -> 0 (new game), -2 -> -1 (quit) */
free((genericptr_t) chosen_game);
} else {
ch = -1; /* quit menu without making a selection => quit */
}
destroy_nhwindow(tmpwin);
if (bannerwin != WIN_ERR) {
/* for tty; clear the menu away and put subset of copyright back
*/
clear_nhwindow(bannerwin);
/* COPYRIGHT_BANNER_A, preceding "Who are you?" prompt */
if (ch == 0)
putstr(bannerwin, 0, copyright_banner_line(1));
}
}
free_saved_games(saved);
return (ch > 0) ? 1 : ch;
}
#endif /* SELECTSAVED */
minit
void
minit()
{
(*restoreprocs.restore_minit)();
return;
}
mread
void
mread(fd, buf, len)
register int fd;
register genericptr_t buf;
register unsigned int len;
{
(*restoreprocs.restore_mread)(fd, buf, len);
return;
}
validate
/* examine the version info and the savefile_info data
that immediately follows it.
Return 0 if it passed the checks.
Return 1 if it failed the version check.
Return 2 if it failed the savefile feature check.
Return -1 if it failed for some unknown reason.
*/
int
validate(fd, name)
int fd;
const char *name;
{
int rlen;
struct savefile_info sfi;
unsigned long compatible;
boolean verbose = name ? TRUE : FALSE, reslt = FALSE;
if (!(reslt = uptodate(fd, name)))
return 1;
rlen = read(fd, (genericptr_t) &sfi, sizeof sfi);
minit(); /* ZEROCOMP */
if (rlen == 0) {
if (verbose) {
pline("File \"%s\" is empty during save file feature check?",
name);
wait_synch();
}
return -1;
}
compatible = (sfi.sfi1 & sfcap.sfi1);
if ((sfi.sfi1 & SFI1_ZEROCOMP) == SFI1_ZEROCOMP) {
if ((compatible & SFI1_ZEROCOMP) != SFI1_ZEROCOMP) {
if (verbose) {
pline("File \"%s\" has incompatible ZEROCOMP compression.",
name);
wait_synch();
}
return 2;
} else if ((sfrestinfo.sfi1 & SFI1_ZEROCOMP) != SFI1_ZEROCOMP) {
set_restpref("zerocomp");
}
}
if ((sfi.sfi1 & SFI1_EXTERNALCOMP) == SFI1_EXTERNALCOMP) {
if ((compatible & SFI1_EXTERNALCOMP) != SFI1_EXTERNALCOMP) {
if (verbose) {
pline("File \"%s\" lacks required internal compression.",
name);
wait_synch();
}
return 2;
} else if ((sfrestinfo.sfi1 & SFI1_EXTERNALCOMP)
!= SFI1_EXTERNALCOMP) {
set_restpref("externalcomp");
}
}
/* RLECOMP check must be last, after ZEROCOMP or INTERNALCOMP adjustments
*/
if ((sfi.sfi1 & SFI1_RLECOMP) == SFI1_RLECOMP) {
if ((compatible & SFI1_RLECOMP) != SFI1_RLECOMP) {
if (verbose) {
pline("File \"%s\" has incompatible run-length compression.",
name);
wait_synch();
}
return 2;
} else if ((sfrestinfo.sfi1 & SFI1_RLECOMP) != SFI1_RLECOMP) {
set_restpref("rlecomp");
}
}
/* savefile does not have RLECOMP level location compression, so adjust */
else
set_restpref("!rlecomp");
return 0;
}
reset_restpref
void
reset_restpref()
{
#ifdef ZEROCOMP
if (iflags.zerocomp)
set_restpref("zerocomp");
else
#endif
set_restpref("externalcomp");
#ifdef RLECOMP
if (iflags.rlecomp)
set_restpref("rlecomp");
else
#endif
set_restpref("!rlecomp");
}
set_restpref
void
set_restpref(suitename)
const char *suitename;
{
if (!strcmpi(suitename, "externalcomp")) {
restoreprocs.name = "externalcomp";
restoreprocs.restore_mread = def_mread;
restoreprocs.restore_minit = def_minit;
sfrestinfo.sfi1 |= SFI1_EXTERNALCOMP;
sfrestinfo.sfi1 &= ~SFI1_ZEROCOMP;
def_minit();
}
if (!strcmpi(suitename, "!rlecomp")) {
sfrestinfo.sfi1 &= ~SFI1_RLECOMP;
}
#ifdef ZEROCOMP
if (!strcmpi(suitename, "zerocomp")) {
restoreprocs.name = "zerocomp";
restoreprocs.restore_mread = zerocomp_mread;
restoreprocs.restore_minit = zerocomp_minit;
sfrestinfo.sfi1 |= SFI1_ZEROCOMP;
sfrestinfo.sfi1 &= ~SFI1_EXTERNALCOMP;
zerocomp_minit();
}
#endif
#ifdef RLECOMP
if (!strcmpi(suitename, "rlecomp")) {
sfrestinfo.sfi1 |= SFI1_RLECOMP;
}
#endif
}
#ifdef ZEROCOMP
#define RLESC '\0' /* Leading character for run of RLESC's */
#ifndef ZEROCOMP_BUFSIZ
#define ZEROCOMP_BUFSIZ BUFSZ
#endif
static NEARDATA unsigned char inbuf[ZEROCOMP_BUFSIZ];
static NEARDATA unsigned short inbufp = 0;
static NEARDATA unsigned short inbufsz = 0;
static NEARDATA short inrunlength = -1;
static NEARDATA int mreadfd;
zerocomp_mgetc
STATIC_OVL int
zerocomp_mgetc()
{
if (inbufp >= inbufsz) {
inbufsz = read(mreadfd, (genericptr_t) inbuf, sizeof inbuf);
if (!inbufsz) {
if (inbufp > sizeof inbuf)
error("EOF on file #%d.\n", mreadfd);
inbufp = 1 + sizeof inbuf; /* exactly one warning :-) */
return -1;
}
inbufp = 0;
}
return inbuf[inbufp++];
}
zerocomp_minit
STATIC_OVL void
zerocomp_minit()
{
inbufsz = 0;
inbufp = 0;
inrunlength = -1;
}
zerocomp_mread
STATIC_OVL void
zerocomp_mread(fd, buf, len)
int fd;
genericptr_t buf;
register unsigned len;
{
/*register int readlen = 0;*/
if (fd < 0)
error("Restore error; mread attempting to read file %d.", fd);
mreadfd = fd;
while (len--) {
if (inrunlength > 0) {
inrunlength--;
*(*((char **) &buf))++ = '\0';
} else {
register short ch = zerocomp_mgetc();
if (ch < 0) {
restoreprocs.mread_flags = -1;
return;
}
if ((*(*(char **) &buf)++ = (char) ch) == RLESC) {
inrunlength = zerocomp_mgetc();
}
}
/*readlen++;*/
}
}
#endif /* ZEROCOMP */
def_minit
STATIC_OVL void
def_minit()
{
return;
}
def_mread
STATIC_OVL void
def_mread(fd, buf, len)
register int fd;
register genericptr_t buf;
register unsigned int len;
{
register int rlen;
#if defined(BSD) || defined(ULTRIX)
#define readLenType int
#else /* e.g. SYSV, __TURBOC__ */
#define readLenType unsigned
#endif
rlen = read(fd, buf, (readLenType) len);
if ((readLenType) rlen != (readLenType) len) {
if (restoreprocs.mread_flags == 1) { /* means "return anyway" */
restoreprocs.mread_flags = -1;
return;
} else {
pline("Read %d instead of %u bytes.", rlen, len);
if (restoring) {
(void) nhclose(fd);
(void) delete_savefile();
error("Error restoring old game.");
}
panic("Error reading level file.");
}
}
}
/*restore.c*/