/
move.h
executable file
·205 lines (176 loc) · 8.79 KB
/
move.h
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/**********************************************************************
|
| Bogart
| Chess Engine
|
| Copyright (C) 2009-2013 Dr.Kameleon
|
|**********************************************************************
| move.h
|**********************************************************************/
#ifndef __MOVE_H__
#define __MOVE_H__
//=======================================================
// Macros
//=======================================================
//-----------------------------------------
// Move/Unmove single piece From...To
//-----------------------------------------
#define MAKE_FROMTO(FR,TO,PF,PT,BOARD) BOARD->atPosition[FR] = empty;\
BOARD->atPosition[TO] = PF;\
BOARD->score -= PIECE_VALUE[PT] + PIECE_POSVALUE[PT][TO] - PIECE_POSVALUE[PF][TO] + PIECE_POSVALUE[PF][FR];\
TOGGLEBITS(BOARD->pieces[PF],FR,TO);\
UNSETBIT(BOARD->pieces[PT],TO);\
SETBIT(BOARD->pieces[empty],FR);\
if (PF==wKing) { BOARD->castling[wCastleOO] = false; BOARD->castling[wCastleOOO] = false; }\
if (PF==bKing) { BOARD->castling[bCastleOO] = false; BOARD->castling[bCastleOOO] = false; }\
if (PF==wRooks) if (FR==h1) BOARD->castling[wCastleOO] = false; else if (FR==a1) BOARD->castling[wCastleOOO] = false;\
if (PF==bRooks) if (FR==h8) BOARD->castling[bCastleOO] = false; else if (FR==a8) BOARD->castling[bCastleOOO] = false;
#define UNMAKE_FROMTO(FR,TO,PF,PT,BOARD) BOARD->atPosition[FR] = PF;\
BOARD->atPosition[TO] = PT;\
BOARD->score += PIECE_VALUE[PT] + PIECE_POSVALUE[PT][TO] - PIECE_POSVALUE[PF][TO] + PIECE_POSVALUE[PF][FR];\
TOGGLEBITS(BOARD->pieces[PF],FR,TO);\
SETBIT(BOARD->pieces[PT],TO);\
UNSETBIT(BOARD->pieces[empty],FR);
//-----------------------------------------
// Make/Unmake a simple move
//-----------------------------------------
#define MAKE1(MOVE,BOARD) MOVE.ep = BOARD->enPassant; MOVE.cs = BOARD->castling;\
MAKE_FROMTO(MOVE.from,MOVE.to,MOVE.pieceFrom,MOVE.pieceTo,BOARD);\
if (((MOVE.pieceFrom==wPawns)||(MOVE.pieceFrom==bPawns)) && (abs(MOVE.from-MOVE.to)==16)) BOARD->enPassant = (MOVE.from+MOVE.to)/2; else BOARD->enPassant = 0;
#define UNMAKE1(MOVE,BOARD) UNMAKE_FROMTO(MOVE.from,MOVE.to,MOVE.pieceFrom,MOVE.pieceTo,BOARD);\
BOARD->enPassant = MOVE.ep; BOARD->castling = MOVE.cs;
//-----------------------------------------
// Make/Unmake Castling/EnPassant move
//-----------------------------------------
#define MAKE2(MOVE,BOARD) MOVE.ep = BOARD->enPassant; MOVE.cs = BOARD->castling;\
MAKE_FROMTO(MOVE.from,MOVE.to,MOVE.pieceFrom,MOVE.pieceTo,BOARD);\
MAKE_FROMTO(MOVE.fromB,MOVE.toB,MOVE.pieceFromB,MOVE.pieceToB,BOARD);\
BOARD->enPassant = 0;
#define UNMAKE2(MOVE,BOARD) UNMAKE_FROMTO(MOVE.fromB,MOVE.toB,MOVE.pieceFromB,MOVE.pieceToB,BOARD);\
UNMAKE_FROMTO(MOVE.from,MOVE.to,MOVE.pieceFrom,MOVE.pieceTo,BOARD);\
BOARD->enPassant = MOVE.ep; BOARD->castling = MOVE.cs;
//-----------------------------------------
// Make/Unmake Promotion move
//-----------------------------------------
#define MAKE3(MOVE,BOARD) BOARD->atPosition[MOVE.from] = MOVE.pieceFrom; SETBIT(BOARD->pieces[MOVE.pieceFrom],MOVE.from); UNSETBIT(BOARD->pieces[MOVE.pieceFromB],MOVE.from);\
MAKE1(MOVE,BOARD);
#define UNMAKE3(MOVE,BOARD) UNMAKE1(MOVE,BOARD);\
BOARD->atPosition[MOVE.from] = MOVE.pieceFromB; UNSETBIT(BOARD->pieces[MOVE.pieceFrom],MOVE.from); SETBIT(BOARD->pieces[MOVE.pieceFromB],MOVE.from);
//-----------------------------------------
// Make/Unmake General move
//-----------------------------------------
#define MAKE(MOVE,BOARD) switch (MOVE.type)\
{\
case Normal : MAKE1(MOVE,BOARD); break;\
case Castle :\
case EnPassant : MAKE2(MOVE,BOARD); break;\
case Promotion : MAKE3(MOVE,BOARD); break;\
default : break;\
}
#define UNMAKE(MOVE,BOARD) switch (MOVE.type)\
{\
case Normal : UNMAKE1(MOVE,BOARD); break;\
case Castle :\
case EnPassant : UNMAKE2(MOVE,BOARD); break;\
case Promotion : UNMAKE3(MOVE,BOARD); break;\
default : break;\
}
//-----------------------------------------
// Hash/Unhash move
//-----------------------------------------
#define HASHUNHASH_FROMTO(F,T,PF,PT,BOARD) BOARD->key ^= ZOBR(BOARD->playing,PF,F) ^ ZOBR(BOARD->playing,PF,T) ^ ZOBR(BOARD->playing,PT,T) ^ ZOBR(BOARD->playing,empty,F);
#define HASHUNHASH(MOVE,BOARD) switch (MOVE.type)\
{\
case Normal : HASHUNHASH_FROMTO(MOVE.from,MOVE.to,MOVE.pieceFrom,MOVE.pieceTo,BOARD); break;\
case Castle :\
case EnPassant :\
HASHUNHASH_FROMTO(MOVE.from,MOVE.to,MOVE.pieceFrom,MOVE.pieceTo,BOARD);\
HASHUNHASH_FROMTO(MOVE.fromB,MOVE.toB,MOVE.pieceFromB,MOVE.pieceToB,BOARD);\
break;\
case Promotion : break;\
default : break;\
}
//-----------------------------------------
// Misc. Macros
//-----------------------------------------
#define NROW(X) X/8
#define NCOL(X) 7-(X%8)
#define SROW(X) NROW(X)+1
#define SCOL(X) ((string)"abcdefgh").at(NCOL(X))
#define SPOS(X) SCOL(X) << SROW(X)
#define ALG2FROM(X) ((string)"12345678").find(X[1])*8 + (7-((string)"abcdefgh").find(X[0]))
#define ALG2TO(X) ((string)"12345678").find(X[3])*8 + (7-((string)"abcdefgh").find(X[2]))
//=======================================================
// Types
//=======================================================
enum MoveType
{
Normal,
Castle,
EnPassant,
Promotion
};
//=======================================================
// Prototype
//=======================================================
class Move
{
public:
//-----------------------------------------
// Methods
//-----------------------------------------
Move (string m, Board* b) : from(ALG2FROM(m)), to(ALG2TO(m)), pieceFrom(b->atPosition[from]), pieceTo(b->atPosition[to]), type(Normal), ep(0), subMove(NULL) {}
Move (int f, int t, Board* b) : from(f), to(t), pieceFrom(b->atPosition[from]), pieceTo(b->atPosition[to]), type(Normal), ep(b->enPassant), subMove(NULL) {}
Move (int f, int t, int fb, int tb, Board* b) : from(f), to(t), fromB(fb), toB(tb), pieceFrom(b->atPosition[from]), pieceTo(empty), pieceFromB(b->atPosition[fromB]), pieceToB(b->atPosition[from]), type(EnPassant), ep(0), subMove(NULL) {}
Move (const Move& m) : from(m.from), to(m.to), pieceFrom(m.pieceFrom), pieceTo(m.pieceTo), fromB(m.fromB), toB(m.toB), pieceFromB(m.pieceFromB), pieceToB(m.pieceToB), value(m.value), type(m.type), ep(m.ep), cs(m.cs), subMove(m.subMove) {}
Move (int f, int t, int pf, int pt, int v) : from(f), to(t), pieceFrom(pf), pieceTo(pt), value(v), type(Normal), ep(0), subMove(NULL) {}
Move (Castling cstl) {
if (cstl==bCastleOO) { this->from=e8; this->to=g8; this->fromB=h8; this->toB=f8; this->pieceFrom = bKing; this->pieceTo=empty; this->pieceFromB = bRooks; this->pieceToB=empty; }
else if (cstl==bCastleOOO) { this->from=e8; this->to=c8; this->fromB=a8; this->toB=d8; this->pieceFrom = bKing; this->pieceTo=empty; this->pieceFromB = bRooks; this->pieceToB=empty;}
else if (cstl==wCastleOO) { this->from=e1; this->to=g1; this->fromB=h1; this->toB=f1; this->pieceFrom = wKing; this->pieceTo=empty; this->pieceFromB = wRooks; this->pieceToB=empty;}
else if (cstl==wCastleOOO) { this->from=e1; this->to=c1; this->fromB=a1; this->toB=d1; this->pieceFrom = wKing; this->pieceTo=empty; this->pieceFromB = wRooks; this->pieceToB=empty;}
this->ep = 0;
this->type = Castle;
this->subMove = NULL;
}
inline string notation();
inline string out();
//-----------------------------------------
// Variables
//-----------------------------------------
int from, to;
int fromB, toB;
int pieceFrom, pieceTo;
int pieceFromB, pieceToB;
MoveType type;
int value;
int ep;
boost::array<bool,4> cs;
Move* subMove;
};
//=======================================================
// Inline Functions
//=======================================================
inline string Move::notation()
{
if (this->type==Promotion)
{
string pc = "";
if ((this->pieceFrom==bQueen)||(this->pieceFrom==wQueen)) pc = "q";
else if ((this->pieceFrom==bRooks)||(this->pieceFrom==wRooks)) pc = "r";
else if ((this->pieceFrom==bKnights)||(this->pieceFrom==wKnights)) pc = "n";
else if ((this->pieceFrom==bBishops)||(this->pieceFrom==wBishops)) pc = "b";
return SSTR(SPOS(this->from) << SPOS(this->to) << pc);
}
else if (this->type==EnPassant)
{
return SSTR(SPOS(this->fromB) << SPOS(this->toB));
}
else return SSTR(SPOS(this->from) << SPOS(this->to));
}
inline string Move::out()
{
return SSTR(this->notation() << " :: " << this->value);
}
#endif