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17 Bit Software 4: Phase Four
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main.c
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C/C++ Source or Header
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1992-09-06
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402 lines
/*
* main.c - C source for GNU CHESS
*
* Copyright (c) 1988,1989,1990 John Stanback
* Copyright (c) 1992 Free Software Foundation
*
* This file is part of GNU CHESS.
*
* GNU Chess is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* GNU Chess is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Chess; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "version.h"
#include "gnuchess.h"
#include <signal.h>
char *ColorStr[2];
char *CP[CPSIZE];
/*
* In a networked enviroment gnuchess might be compiled on different hosts
* with different random number generators, that is not acceptable if they
* are going to share the same transposition table.
*/
unsigned long int next = 1;
unsigned int
urand (void)
{
next *= 1103515245;
next += 12345;
return ((unsigned int) (next >> 16) & 0xFFFF);
}
void
srand (unsigned int seed)
{
next = seed;
}
unsigned long hashkey, hashbd;
struct hashval hashcode[2][7][64];
#ifdef ttblsz
struct hashentry huge ttable[2][vttblsz + MAXrehash];
unsigned int ttblsize;
#endif
char savefile[128] = "";
char listfile[128] = "";
#ifdef HISTORY
unsigned char __far history[32768];
#endif
short rpthash[2][256];
struct leaf Tree[TREE], *root;
short TrPnt[MAXDEPTH];
short PieceList[2][64], PawnCnt[2][8];
short castld[2], Mvboard[64];
short svalue[64];
struct flags flag;
short opponent, computer, WAwindow, WBwindow, BAwindow, BBwindow, dither, INCscore;
long ResponseTime, ExtraTime, MaxResponseTime, et, et0, time0, ft;
long NodeCnt, ETnodes, EvalNodes, HashCnt, HashAdd, FHashCnt, FHashAdd, HashCol,
THashCol, filesz;
long replus, reminus;
short HashDepth = HASHDEPTH, HashMoveLimit = HASHMOVELIMIT;
short player, xwndw, rehash;
struct GameRec __far GameList[MAXMOVES + MAXDEPTH];
short Sdepth, GameCnt, Game50, MaxSearchDepth;
short epsquare, contempt;
int Book;
struct TimeControlRec TimeControl;
short TCflag, TCmoves, TCminutes, TCseconds, OperatorTime;
short XCmoves[3], XCminutes[3], XCseconds[3], XC, XCmore;
const short otherside[3] =
{black, white, neutral};
unsigned short hint;
short int TOflag; /* force search re-init if we backup search */
short mtl[2], pmtl[2], hung[2];
short Pindex[64];
short PieceCnt[2];
short FROMsquare, TOsquare;
short HasKnight[2], HasBishop[2], HasRook[2], HasQueen[2];
short ChkFlag[MAXDEPTH], CptrFlag[MAXDEPTH], PawnThreat[MAXDEPTH];
short Pscore[MAXDEPTH], Tscore[MAXDEPTH];
const short qrook[3] =
{0, 56, 0};
const short krook[3] =
{7, 63, 0};
const short kingP[3] =
{4, 60, 0};
const short rank7[3] =
{6, 1, 0};
const short sweep[8] =
{false, false, false, true, true, true, false, false};
unsigned short killr0[MAXDEPTH], killr1[MAXDEPTH];
unsigned short killr2[MAXDEPTH], killr3[MAXDEPTH];
unsigned short PV, SwagHt, Swag0, Swag1, Swag2, Swag3, Swag4, sidebit;
#ifdef KILLT
short killt[0x4000];
#endif
const short value[7] =
{0, valueP, valueN, valueB, valueR, valueQ, valueK};
const short control[7] =
{0, ctlP, ctlN, ctlB, ctlR, ctlQ, ctlK};
short stage, stage2, Developed[2];
FILE *hashfile;
unsigned int starttime;
short int ahead = true, hash = true;
#ifdef AMIGA
char *libdir; /* path to GnuChess files */
#endif
#if defined CHESSTOOL || defined XBOARD
void
TerminateChess (int sig)
{
ExitChess();
}
#endif
/* hmm.... shouldn`t main be moved to the interface routines */
int
main (int argc, char **argv)
{
char *xwin = 0;
char *Lang = NULL;
srand (starttime = ((unsigned int) time ((long *) 0))); /* init urand */
#ifdef ttblsz
ttblsize = ttblsz;
rehash = -1;
#endif /* ttblsz */
if (argc > 2)
{
if (argv[1][0] == '-' && argv[1][1] == 'L')
{
Lang = argv[2];
argv += 2;
argc -= 2;
}
}
#ifdef AMIGA
/* if ((libdir = getenv("GNUCHESSDIR")) == NULL)*/
libdir = "misc/";
#endif
InitConst (Lang);
ColorStr[0] = CP[118];
ColorStr[1] = CP[119];
while (argc > 1 && ((argv[1][0] == '-') || (argv[1][0] == '+')))
{
switch (argv[1][1])
{
case 'a':
ahead = ((argv[1][0] == '-') ? false : true);
break;
case 'h':
hash = ((argv[1][0] == '-') ? false : true);
break;
case 's':
argc--;
argv++;
if (argc > 1)
strcpy (savefile, argv[1]);
break;
case 'l':
argc--;
argv++;
if (argc > 1)
strcpy (listfile, argv[1]);
break;
#if ttblsz
case 'r':
if (argc > 2)
rehash = atoi (argv[2]);
argc--;
argv++;
if (rehash > MAXrehash)
rehash = MAXrehash;
break;
case 'T':
if (argc > 2)
ttblsize = atoi (argv[2]);
argc--;
argv++;
if (ttblsize > 0 && ttblsize < 24)
ttblsize = (1 << ttblsize);
else
ttblsize = ttblsz;
break;
#ifdef HASHFILE
case 't': /* create or test persistent transposition
* table */
hashfile = fopen (HASHFILE, RWA_ACC);
if (hashfile)
{
fseek (hashfile, 0L, SEEK_END);
filesz = (ftell (hashfile) / sizeof (struct fileentry)) - 1;
}
if (hashfile != NULL)
{
long i, j;
int nr[MAXDEPTH];
struct fileentry n;
printf (CP[49]);
for (i = 0; i < MAXDEPTH; i++)
nr[i] = 0;
fseek (hashfile, 0L, SEEK_END);
i = ftell (hashfile) / sizeof (struct fileentry);
fseek (hashfile, 0L, SEEK_SET);
for (j = 0; j < i + 1; j++)
{
fread (&n, sizeof (struct fileentry), 1, hashfile);
if (n.depth)
{
nr[n.depth]++;
nr[0]++;
}
}
printf (CP[109],
nr[0], i);
for (j = 1; j < MAXDEPTH; j++)
printf ("%d ", nr[j]);
printf ("\n");
}
return 0;
case 'c': /* create or test persistent transposition
* table */
if (argc > 2)
filesz = atoi (argv[2]);
if (filesz > 0 && filesz < 24)
filesz = (1 << filesz) - 1 + MAXrehash;
else
filesz = Deffilesz + MAXrehash;
if ((hashfile = fopen (HASHFILE, RWA_ACC)) == NULL)
hashfile = fopen (HASHFILE, WA_ACC);
if (hashfile != NULL)
{
long j;
struct fileentry n;
printf (CP[66]);
for (j = 0; j < 32; j++)
n.bd[j] = 0;
n.f = n.t = 0;
n.flags = 0;
n.depth = 0;
n.sh = n.sl = 0;
for (j = 0; j < filesz + 1; j++)
fwrite (&n, sizeof (struct fileentry), 1, hashfile);
fclose (hashfile);
}
else
printf (CP[50], HASHFILE);
return (0);
#endif /* HASHFILE */
#endif /* ttblsz */
case 'x':
xwin = &argv[1][2];
break;
case 'v':
fprintf (stderr, CP[102], version, patchlevel);
exit (1);
default:
fprintf (stderr, CP[113]);
exit (1);
}
argv++;
argc--;
}
XC = 0;
MaxResponseTime = 0;
#if defined CHESSTOOL || defined XBOARD
signal (SIGTERM, TerminateChess);
TCflag = true;
TCmoves = 40;
TCminutes = 120;
TCseconds = 0;
OperatorTime = 0;
#else
TCflag = false;
OperatorTime = 0;
#endif
if (argc == 2)
{
char *p;
MaxResponseTime = 100L*strtol(argv[1], &p, 10);
if (*p == ':')
MaxResponseTime = 60L*MaxResponseTime +
100L*strtol(++p, (char **) NULL, 10);
TCflag = false;
TCmoves = 0;
TCminutes = 0;
TCseconds = 0;
}
if (argc >= 3)
{
char *p;
if (argc > 9)
{
fprintf (stderr, "%s\n", CP[220]);
exit (1);
}
TCmoves = atoi (argv[1]);
TCminutes = strtol (argv[2], &p, 10);
if (*p == ':')
TCseconds = strtol (p + 1, (char **) NULL, 10);
else
TCseconds = 0;
TCflag = true;
argc -= 3;
argv += 3;
while (argc > 1)
{
XCmoves[XC] = atoi (argv[0]);
XCminutes[XC] = strtol (argv[1], &p, 10);
if (*p == ':')
XCseconds[XC] = strtol (p + 1, (char **) NULL, 10);
else
XCseconds[XC] = 0;
if (XCmoves[XC] && (XCminutes[XC] || XCseconds[XC]))
XC++;
else
{
fprintf (stderr, CP[220]);
exit (1);
}
argc -= 2;
argv += 2;
}
if (argc)
{
fprintf (stderr, "%s\n", CP[220]);
exit (1);
}
}
Initialize ();
#ifdef ttblsz
Initialize_ttable ();
#endif /* ttblsz */
Initialize_dist ();
Initialize_moves ();
NewGame ();
flag.easy = ahead;
flag.hash = hash;
if (xwin)
xwndw = atoi (xwin);
hashfile = NULL;
#if ttblsz
#ifdef HASHFILE
hashfile = fopen (HASHFILE, RWA_ACC);
if (hashfile)
{
fseek (hashfile, 0L, SEEK_END);
filesz = ftell (hashfile) / sizeof (struct fileentry) - 1;
}
#if !defined CHESSTOOL && !defined XBOARD
else
ShowMessage (CP[98]);
#endif
#endif /* HASHFILE */
#endif /* ttblsz */
while (!(flag.quit))
{
if (flag.bothsides && !flag.mate)
SelectMove (opponent, 1);
else
InputCommand ();
if (!(flag.quit || flag.mate || flag.force))
{
SelectMove (computer, 1);
}
}
#if ttblsz
#ifdef HASHFILE
if (hashfile)
fclose (hashfile);
#endif /* HASHFILE */
#endif /* ttblsz */
ExitChess ();
return (0);
}