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/* board.h
*
*/
/*
fics - An internet chess server.
Copyright (C) 1993 Richard V. Nash
This program 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 of the License, or
(at your option) any later version.
This program 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.
*/
/* Revision history:
name email yy/mm/dd Change
Richard Nash 93/10/22 Created
*/
#ifndef _BOARD_H
#define _BOARD_H
#define WHITE 0x00
#define BLACK 0x80
#define CString(c) (((c) == WHITE) ? "White" : "Black")
#define CToggle(c) (((c) == BLACK) ? WHITE : BLACK)
/*
* These are indexes into an array so their values are not arbitrary.
*/
#define NOPIECE 0x00
#define PAWN 0x01
#define KNIGHT 0x02
#define BISHOP 0x03
#define ROOK 0x04
#define QUEEN 0x05
#define KING 0x06
#define MAX_BOARD_STRING_LEGTH 1280 /* Arbitrarily 80 * 16 */
#define MAX_STYLES 13
#define MoveToHalfMove(gs) \
((((gs)->moveNum - 1) * 2) + (((gs)->onMove == WHITE) ? 0 : 1))
#define W_PAWN (PAWN | WHITE)
#define W_KNIGHT (KNIGHT | WHITE)
#define W_BISHOP (BISHOP | WHITE)
#define W_ROOK (ROOK | WHITE)
#define W_QUEEN (QUEEN | WHITE)
#define W_KING (KING | WHITE)
#define B_PAWN (PAWN | BLACK)
#define B_KNIGHT (KNIGHT | BLACK)
#define B_BISHOP (BISHOP | BLACK)
#define B_ROOK (ROOK | BLACK)
#define B_QUEEN (QUEEN | BLACK)
#define B_KING (KING | BLACK)
#define isblack(p) ((p) & BLACK)
#define iswhite(p) (!isblack(p))
#define iscolor(p, color) (((p) & BLACK) == (color))
#define colorval(p) ((p) & 0x80)
#define piecetype(p) ((p) & 0x7f)
#define square_color(r, f) ((((r) + (f)) & 0x01) ? BLACK : WHITE)
/* Treated as [file][rank] */
typedef int board_t[8][8];
typedef struct _game_state_t {
board_t board;
/* for bughouse */
int holding[2][5];
/* For castling */
unsigned char wkmoved, wqrmoved, wkrmoved;
unsigned char bkmoved, bqrmoved, bkrmoved;
/* for ep */
int ep_possible[2][8];
/* For draws */
int lastIrreversable;
int onMove;
int moveNum;
/* Game num not saved, must be restored when read */
int gameNum;
} game_state_t;
/*
* If a drop move, then 'fromFile' is ALG_DROP and 'fromRank' is
* piece.
*/
#define ALG_DROP -2
typedef struct _move_t {
int color;
int fromFile, fromRank;
int toFile, toRank;
int pieceCaptured;
int piecePromotionTo;
int enPassant; /* 0 = no, 1=higher -1= lower */
int doublePawn; /* Only used for board display */
char moveString[8];
char algString[8];
unsigned char FENpos[74]; /* This replaces the boardList. */
unsigned atTime;
unsigned tookTime;
} move_t;
extern char *wpstring[];
extern char *bpstring[];
extern int pieceValues[7];
extern char *board_to_string(char *, char *, int, int, game_state_t *,
move_t *, int, int, int, int);
extern char *move_and_time(move_t *);
extern int board_init(game_state_t *, char *, char *);
extern int board_read_file(char *, char *, game_state_t *);
extern void board_calc_strength(game_state_t *, int *, int *);
extern void update_holding(int, int);
extern void wild_init(void);
extern void wild_update(int);
#endif
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