/************************************************************************/
/* This  file  contains code for CHESS.  Copyright (C) 1986, 1987, 1988	*/
/* Free Software Foundation, Inc.										*/
/*																		*/
/* This file is part of CHESS.											*/
/*																		*/
/* CHESS is distributed in the hope that it will be useful, but WITHOUT	*/
/* ANY  WARRANTY.   No  author or distributor accepts responsibility to	*/
/* anyone for the consequences of using it or for whether it serves any	*/
/* particular  purpose  or  works at all, unless he says so in writing.	*/
/* Refer to the CHESS General Public License for full details.			*/
/*																		*/
/* Everyone  is  granted  permission  to  copy, modify and redistribute	*/
/* CHESS,  but only under the conditions described in the CHESS General	*/
/* Public  License.   A  copy  of this license is supposed to have been	*/
/* given  to  you  along  with  CHESS  so  you can know your rights and	*/
/* responsibilities.   It  should  be  in  a file named COPYING.  Among	*/
/* other things, the copyright notice and this notice must be preserved	*/
/* on all copies.														*/
/************************************************************************/
/* Header file for GNU CHESS											*/
/************************************************************************/

#define neutral		2
#define white		0
#define black		1
#define no_piece	0
#define pawn		1
#define knight		2
#define bishop		3
#define rook		4
#define queen		5
#define king		6
#define pxx			" PNBRQK"
#define qxx			" pnbrqk"
#define rxx			"12345678"
#define cxx			"abcdefgh"
#define check		0x0001
#define capture		0x0002
#define draw		0x0004
#define promote		0x0008
#define cstlmask	0x0010
#define epmask		0x0020
#define exact		0x0040
#define pwnthrt		0x0080
#define maxdepth	30
#define true		1
#define false		0

struct leaf {
	short			f, t, score, reply;
	unsigned short	flags;
};

struct GameRec {
	unsigned short		gmove;
    short				score, depth, time, piece, color;
	long				nodes;
};

struct TimeControlRec {
	short				moves[2];
	long				clock[2];
};

struct BookEntry {
	struct BookEntry	*next;
	unsigned short		*mv;
};

extern char						mvstr1[5], mvstr2[5];
extern struct leaf				Tree[2000], *root;
extern short					TrPnt[maxdepth], board[64],
								color[64], row[64], column[64],
								locn[8][8], atak[2][64],
								PawnCnt[2][8], castld[2],
								kingmoved[2], c1, c2, *atk1, *atk2,
								*PC1, *PC2, mate, post, opponent,
								computer, Sdepth, Awindow, Bwindow,
								dither, quit, reverse, bothsides,
								hashflag, InChk, player, force,
								beep, meter, timeout, xwndw,
								GameCnt, Game50, epsquare, lpost,
								rcptr, contempt, MaxSearchDepth,
								TCflag, TCmoves, TCminutes,
								OperatorTime, otherside[3],
								Stboard[64], Stcolor[64];

extern long						ResponseTime, ExtraTime, Level, et,
								et0, time0, cputimer, ft, NodeCnt,
								evrate, ETnodes, EvalNodes, HashCnt;

extern struct GameRec			GameList[240];
extern struct BookEntry			*Book;
extern struct TimeControlRec	TimeControl;
extern unsigned short			hint, PrVar[maxdepth];

#define HZ 60