217 lines
6.3 KiB
C
217 lines
6.3 KiB
C
#include <stdlib.h>
|
|
|
|
#include "advent.h"
|
|
#include "database.h"
|
|
#include "linenoise/linenoise.h"
|
|
|
|
#define VRSION 25 /* bump on save format change */
|
|
|
|
static void fSAVWDS(long*,long*,long*,long*,long*,long*,long*);
|
|
#define SAVWDS(W1,W2,W3,W4,W5,W6,W7) fSAVWDS(&W1,&W2,&W3,&W4,&W5,&W6,&W7)
|
|
static void fSAVARR(long*,long);
|
|
#define SAVARR(ARR,N) fSAVARR(ARR,N)
|
|
static void fSAVWRD(long,long*);
|
|
#define SAVWRD(OP,WORD) fSAVWRD(OP,&WORD)
|
|
static void fSAVEIO(long,long,long*);
|
|
#define SAVEIO(OP,IN,ARR) fSAVEIO(OP,IN,ARR)
|
|
|
|
/* Suspend/resume I/O routines (SAVWDS, SAVARR, SAVWRD) */
|
|
|
|
static void fSAVWDS(long *W1, long *W2, long *W3, long *W4,
|
|
long *W5, long *W6, long *W7)
|
|
/* Write or read 7 variables. See SAVWRD. */
|
|
{
|
|
SAVWRD(0,(*W1));
|
|
SAVWRD(0,(*W2));
|
|
SAVWRD(0,(*W3));
|
|
SAVWRD(0,(*W4));
|
|
SAVWRD(0,(*W5));
|
|
SAVWRD(0,(*W6));
|
|
SAVWRD(0,(*W7));
|
|
}
|
|
|
|
static void fSAVARR(long arr[], long n)
|
|
/* Write or read an array of n words. See SAVWRD. */
|
|
{
|
|
long i;
|
|
|
|
for (i=1; i<=n; i++) {
|
|
SAVWRD(0,arr[i]);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void fSAVWRD(long op, long *pword)
|
|
/* If OP<0, start writing a file, using word to initialise encryption; save
|
|
* word in the file. If OP>0, start reading a file; read the file to find
|
|
* the value with which to decrypt the rest. In either case, if a file is
|
|
* already open, finish writing/reading it and don't start a new one. If OP=0,
|
|
* read/write a single word. Words are buffered in case that makes for more
|
|
* efficient disk use. We also compute a simple checksum to catch elementary
|
|
* poking within the saved file. When we finish reading/writing the file,
|
|
* we store zero into *PWORD if there's no checksum error, else nonzero. */
|
|
{
|
|
static long buf[250], cksum = 0, h1, hash = 0, n = 0, state = 0;
|
|
|
|
if (op != 0)
|
|
{
|
|
long ifvar = state;
|
|
switch (ifvar<0 ? -1 : (ifvar>0 ? 1 : 0))
|
|
{
|
|
case -1:
|
|
case 1:
|
|
if (n == 250)SAVEIO(1,state > 0,buf);
|
|
n=MOD(n,250)+1;
|
|
if (state <= 0) {
|
|
n--; buf[n]=cksum; n++;
|
|
SAVEIO(1,false,buf);
|
|
}
|
|
n--; *pword=buf[n]-cksum; n++;
|
|
SAVEIO(-1,state > 0,buf);
|
|
state=0;
|
|
break;
|
|
case 0: /* FIXME: Huh? should be impossible */
|
|
state=op;
|
|
SAVEIO(0,state > 0,buf);
|
|
n=1;
|
|
if (state <= 0) {
|
|
hash=MOD(*pword,1048576L);
|
|
buf[0]=1234L*5678L-hash;
|
|
}
|
|
SAVEIO(1,true,buf);
|
|
hash=MOD(1234L*5678L-buf[0],1048576L);
|
|
cksum=buf[0];
|
|
return;
|
|
}
|
|
}
|
|
if (state == 0)
|
|
return;
|
|
if (n == 250)
|
|
SAVEIO(1,state > 0,buf);
|
|
n=MOD(n,250)+1;
|
|
h1=MOD(hash*1093L+221573L,1048576L);
|
|
hash=MOD(h1*1093L+221573L,1048576L);
|
|
h1=MOD(h1,1234)*765432+MOD(hash,123);
|
|
n--;
|
|
if (state > 0)
|
|
*pword=buf[n]+h1;
|
|
buf[n]=*pword-h1;
|
|
n++;
|
|
cksum=MOD(cksum*13+*pword,1000000000L);
|
|
}
|
|
|
|
static void fSAVEIO(long op, long in, long arr[])
|
|
/* If OP=0, ask for a file name and open a file. (If IN=true, the file is for
|
|
* input, else output.) If OP>0, read/write ARR from/into the previously-opened
|
|
* file. (ARR is a 250-integer array.) If OP<0, finish reading/writing the
|
|
* file. (Finishing writing can be a no-op if a "stop" statement does it
|
|
* automatically. Finishing reading can be a no-op as long as a subsequent
|
|
* SAVEIO(0,false,X) will still work.) */
|
|
{
|
|
static FILE *fp = NULL;
|
|
char* name;
|
|
|
|
switch (op < 0 ? -1 : (op > 0 ? 1 : 0))
|
|
{
|
|
case -1:
|
|
fclose(fp);
|
|
break;
|
|
case 0:
|
|
while (fp == NULL) {
|
|
name = linenoise("File name: ");
|
|
fp = fopen(name,(in ? READ_MODE : WRITE_MODE));
|
|
if (fp == NULL)
|
|
printf("Can't open file %s, try again.\n", name);
|
|
}
|
|
linenoiseFree(name);
|
|
break;
|
|
case 1:
|
|
if (in)
|
|
IGNORE(fread(arr,sizeof(long),250,fp));
|
|
else
|
|
IGNORE(fwrite(arr,sizeof(long),250,fp));
|
|
break;
|
|
}
|
|
}
|
|
|
|
int saveresume(FILE *input, bool resume)
|
|
/* Suspend and resume */
|
|
{
|
|
int kk;
|
|
long i;
|
|
if (!resume) {
|
|
/* Suspend. Offer to save things in a file, but charging
|
|
* some points (so can't win by using saved games to retry
|
|
* battles or to start over after learning zzword). */
|
|
SPK=201;
|
|
RSPEAK(260);
|
|
if (!YES(input,200,54,54)) return(2012);
|
|
game.saved=game.saved+5;
|
|
kk= -1;
|
|
}
|
|
else
|
|
{
|
|
/* Resume. Read a suspended game back from a file. */
|
|
kk=1;
|
|
if (game.loc != 1 || game.abbrev[1] != 1) {
|
|
RSPEAK(268);
|
|
if (!YES(input,200,54,54)) return(2012);
|
|
}
|
|
}
|
|
|
|
/* Suspend vs resume cases are distinguished by the value of kk
|
|
* (-1 for suspend, +1 for resume). */
|
|
|
|
/*
|
|
* FIXME: This is way more complicated than it needs to be in C.
|
|
* What we ought to do is define a save-block structure that
|
|
* includes a game state block and then use a single fread/fwrite
|
|
* for I/O. All the SAV* functions can be scrapped.
|
|
*/
|
|
|
|
DATIME(&i,&K);
|
|
K=i+650*K;
|
|
SAVWRD(kk,K);
|
|
K=VRSION;
|
|
SAVWRD(0,K);
|
|
if (K != VRSION) {
|
|
SETPRM(1,K/10,MOD(K,10));
|
|
SETPRM(3,VRSION/10,MOD(VRSION,10));
|
|
RSPEAK(269);
|
|
return(2000);
|
|
}
|
|
/* Herewith are all the variables whose values can change during a game,
|
|
* omitting a few (such as I, J) whose values between turns are
|
|
* irrelevant and some whose values when a game is
|
|
* suspended or resumed are guaranteed to match. If unsure whether a value
|
|
* needs to be saved, include it. Overkill can't hurt. Pad the last savwds
|
|
* with junk variables to bring it up to 7 values. */
|
|
SAVWDS(game.abbnum,game.blklin,game.bonus,game.clock1,game.clock2,game.closed,game.closng);
|
|
SAVWDS(game.detail,game.dflag,game.dkill,game.dtotal,game.foobar,game.holdng,game.iwest);
|
|
SAVWDS(game.knfloc,game.limit,K,game.lmwarn,game.loc,game.newloc,game.numdie);
|
|
SAVWDS(K,game.oldlc2,game.oldloc,game.oldobj,game.panic,game.saved,game.setup);
|
|
SAVWDS(SPK,game.tally,game.thresh,game.trndex,game.trnluz,game.turns,OBJTXT[OYSTER]);
|
|
SAVWDS(K,WD1,WD1X,WD2,game.wzdark,game.zzword,OBJSND[BIRD]);
|
|
SAVWDS(OBJTXT[SIGN],game.clshnt,game.novice,K,K,K,K);
|
|
SAVARR(game.abbrev,LOCSIZ);
|
|
SAVARR(game.atloc,LOCSIZ);
|
|
SAVARR(game.dloc,NDWARVES);
|
|
SAVARR(game.dseen,NDWARVES);
|
|
SAVARR(game.fixed,NOBJECTS);
|
|
SAVARR(game.hinted,HNTSIZ);
|
|
SAVARR(game.hintlc,HNTSIZ);
|
|
SAVARR(game.link,NOBJECTS*2);
|
|
SAVARR(game.odloc,NDWARVES);
|
|
SAVARR(game.place,NOBJECTS);
|
|
SAVARR(game.prop,NOBJECTS);
|
|
SAVWRD(kk,K);
|
|
if (K != 0) {
|
|
RSPEAK(270);
|
|
exit(0);
|
|
}
|
|
K=NUL;
|
|
game.zzword=RNDVOC(3,game.zzword);
|
|
if (kk > 0) return(8);
|
|
RSPEAK(266);
|
|
exit(0);
|
|
}
|