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/* $Id: position.h,v 1.30 2003/07/01 04:38:26 bergo Exp $ */
/*
eboard - chess client
http://eboard.sourceforge.net
Copyright (C) 2000-2001 Felipe Paulo Guazzi Bergo
bergo@seul.org
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef POSITION_H
#define POSITION_H 1
#include "eboard.h"
#include "stl.h"
class IntAndString {
public:
IntAndString() { references=0; }
string s;
int i;
int references;
};
// if only glibc would malloc() corectly, we wouldn't need this ugly duck
class StringCollection {
public:
StringCollection();
~StringCollection();
int open();
void append(char *s);
void append(string &s);
void append(char c);
void close();
void link(int id);
void unlink(int id);
bool isOpen();
const char *get(int id);
private:
list<IntAndString> collection;
int LastId;
bool amOpen;
};
class SMove {
public:
SMove(piece p,int sx,int sy,int dx,int dy);
int distance();
int valid();
int SX,SY,DX,DY;
piece Piece;
};
class Position {
public:
Position();
~Position();
int operator==(const Position &p);
int operator!=(const Position &p);
Position operator=(Position &p);
void setStartPos();
void setPiece(int col,int row,piece p);
piece getPiece(int col,int row);
void setLastMove(char *s);
void setLastMove(string &s);
string &getLastMove();
string &getMaterialString(variant Vr=REGULAR);
string &getHouseString();
void addAnnotation(int id);
char *getAnnotation();
void clearAnnotation();
string &getFEN();
void setFEN(const char *fen);
int getStockCount(piece p);
void clearStock();
void incStockCount(piece p);
void decStockCount(piece p);
void print();
void diff(Position &np,vector<SMove *> &sl);
void intersection(Position &b);
void moveAnyNotation(char *m,piece color,variant Vr=REGULAR);
void moveStdNotation(char *m,piece color,variant Vr=REGULAR);
void moveCartesian(int x1,int y1,int x2,int y2,variant Vr=REGULAR,
bool resolvepromotion=false);
void moveDrop(piece p,int x2,int y2);
void stdNotationForMove(int x1,int y1,int x2,int y2,piece prom,char *m,
variant Vr=REGULAR);
void SANstring(char *src,char *dest);
// randomly changes the position to make it "different"
void invalidate();
// checking
bool isMoveLegalCartesian(int x0,int y0,int x1,int y1,piece mycolor,variant vari);
bool isDropLegal(piece p,int x1,int y1,piece mycolor,variant vari);
bool isMate(piece c,variant Vr=REGULAR);
bool isStalemate(piece c,variant Vr=REGULAR);
bool isNMDraw(variant Vr=REGULAR); /* no-material draw */
bool maycastle[4]; // 0=white short, 1=black short, 2=white long, 3=black long
signed char ep[2]; // enpassant square (ep[0]=-1 for none, ep[0]=-2 for allow any)
bool sidehint; // used by scratch boards only
private:
piece square[8][8];
string LastMove;
string MaterialString;
string HouseString;
short int House[5][2]; // {crazy,bug}house stock (P,R,N,B,Q)
list<int> Annotations;
static char AnnotationBuffer[512];
void locate(piece p,int *src,int *dest,int istake,variant Vr=REGULAR);
void ambiguityCheck(piece p, piece c,int destx,int desty,
int exclx,int excly,
vector<int> & ambx, vector<int> & amby);
bool canMove(piece p,piece c,int sx,int sy,int dx,int dy);
bool isInCheck(piece c,variant Vr=REGULAR);
bool isSquareInCheck(int x,int y,piece dc,variant Vr=REGULAR);
void checkCastlingPossibility();
void stdNotationForMoveInternal(int x1,int y1,int x2,int y2,char *m);
void makeAtomicExplosion(int x,int y);
void dropAnnotations();
};
#endif
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