bBasicBoard Class Reference

#include <board.h>

Inheritance diagram for bBasicBoard:

Public Member Functions
plynum_t	getPly () const
void	setPly (plynum_t const p)
void	incPly ()
void	decPly ()
case_t	getEp () const
void	setEp (case_t const e)
void	clearEp ()
movenum50_t	getPly50Moves () const
void	setPly50Moves (movenum50_t const p)
movenum50_t	incPly50Moves ()
void	clearPly50Moves ()
bool	canCastle () const
bool	canCastle (uint8_t const f) const
void	setCastle (uint8_t const f)
void	setCastle (uint8_t const f, bool const c)
void	clearCastle (uint8_t const f)
bool	isInCheck () const
virtual void	setInCheck ()
void	clearInCheck ()
bool	whiteToMove () const
int16_t	getMoveNumber () const
side_t	getColourToMove () const
piece_t	getPiece (case_t const bc) const
	1 for white, 2 for black
piece_t	getPiece (column_t const iColumn, rank_t const iRank) const
piece_t	getPieceCtl (column_t const iColumn, rank_t const iRank) const
	retrieve piece with bounds checking, return field empty in case of out of bounds
void	setPiece (case_t const bc, piece_t const piece)
	used for promotion move generation
void	setPiece (case_t const bc, uint8_t const piece)
	used for unMakeBoardMove
piece_t	setGetPiece (column_t const newcol, rank_t const newrank, piece_t const piece)
	used for makeBoardMove
piece_t	removePiece (column_t const newcol, rank_t const newrank)
	used for makeBoardMove
void	movePiece (case_t const f, case_t const t, piece_t const p)
void	swapPiece (case_t const t, piece_t const op, piece_t const np)
void	clearPiece (case_t const bc)
void	moveWhiteKing (case_t const f, case_t const t)
void	moveBlackKing (case_t const f, case_t const t)
bool	isFieldEmpty (case_t const bc) const
bool	isFieldEmpty (column_t const iColumn, rank_t const iRank) const
virtual void	setCapture (piece_t const p, case_t const c)
	Clear castle flag if rook captured update piece counter, update hash, clear field.
case_t	getWhiteKingPos () const
case_t	getBlackKingPos () const
bFen	getFEN () const
std::string	getHashStr () const
hashkey_t	getHash () const
void	setHash (hashkey_t const newHash)
u_positionFlags_t	makeBoardMove (column_t const oldcol, rank_t const oldrank, column_t const newcol, rank_t const newrank, piece_t const promotion)
	apply move to check if in check only, board to be discarded as it will be in incomplete state, no hash update no check flag set, etc.
void	unMakeBoardMove (case_t const &cf, column_t const newcol, rank_t const newrank, u_positionFlags_t const oldFlags, piece_t const promotion)
	undo makeBoardMove, restoring previous situation

Protected Member Functions
	bBasicBoard ()
	bBasicBoard (bBasicBoard const &bb)
	bBasicBoard (bBasicBoard &&bb)
	bBasicBoard (bFen const &fen)
virtual	~bBasicBoard ()
bBasicBoard &	operator= (bBasicBoard const &)=delete
bBasicBoard &	operator= (bBasicBoard &&)=delete
void	calcHash ()
	Set hash based on board position, also calc pieces Byte 0: bits 4-6 capture count (masked) bit 7 player to move We are using 64 bits for hash.
void	setPieceKU (case_t const bc, piece_t const piece)
	calculate and set hash

Protected Attributes
union {
uint64_t   u_positionFlags = 0ULL
struct {
case_t   m_whiteKing
case_t   m_blackKing
plynum_t   m_ply
case_t   m_ep
movenum50_t   m_ply50moves
uint8_t   m_castling
piece_t   m_capturedpiece
	4 castling bits as uints as copy ctor stumbles on bool array More...
}
};
hashkey_t	m_hash

Detailed Description

Definition at line 38 of file board.h.

Constructor & Destructor Documentation

bBasicBoard() [1/4]

bBasicBoard::bBasicBoard ( )

protected

bBasicBoard() [2/4]

bBasicBoard::bBasicBoard ( bBasicBoard const &  bb )

explicitprotected

Definition at line 12 of file board.cpp.

bBasicBoard() [3/4]

bBasicBoard::bBasicBoard ( bBasicBoard &&  bb )

explicitprotected

Definition at line 19 of file board.cpp.

bBasicBoard() [4/4]

bBasicBoard::bBasicBoard ( bFen const &  fen )

explicitprotected

Todo:

check legality of position: Max number of pieces of each type e.g. K=1, Q=(9 - # pawns), N=(10 - # pawns) colour of bishops, double in-check, in case of ep, adjacent pawn movenumber if not initial position, location of pawns, position of king and rooks in case of castle allowed (att. 960) for each promoted piece, an opponent piece must have been taken

Definition at line 35 of file board.cpp.

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~bBasicBoard()

bBasicBoard::~bBasicBoard ( )

protectedvirtual

Definition at line 26 of file board.cpp.

Member Function Documentation

operator=() [1/2]

bBasicBoard & bBasicBoard::operator= ( bBasicBoard const &  )

protecteddelete

operator=() [2/2]

bBasicBoard & bBasicBoard::operator= ( bBasicBoard &&  )

protecteddelete

getPly()

plynum_t bBasicBoard::getPly ( ) const

inline

Definition at line 52 of file board.h.

setPly()

void bBasicBoard::setPly ( plynum_t const  p )

inline

Definition at line 53 of file board.h.

Referenced by bBasicBoard().

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incPly()

void bBasicBoard::incPly ( )

inline

Definition at line 54 of file board.h.

Referenced by bBasicBoard(), bBoard::invertColours(), and makeBoardMove().

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decPly()

void bBasicBoard::decPly ( )

inline

Definition at line 55 of file board.h.

Referenced by bBoard::invertColours().

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getEp()

case_t bBasicBoard::getEp ( ) const

inline

Definition at line 58 of file board.h.

Referenced by calcHash(), bWhitePawn::GenerateMoves(), bBlackPawn::GenerateMoves(), getFEN(), bWhitePawn::hasValidMovePreflightCheck(), and bBlackPawn::hasValidMovePreflightCheck().

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setEp()

void bBasicBoard::setEp

(

case_t const

e

)

Definition at line 233 of file board.cpp.

Referenced by bBasicBoard().

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clearEp()

void bBasicBoard::clearEp ( )

inline

Definition at line 60 of file board.h.

Referenced by bBasicBoard().

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getPly50Moves()

movenum50_t bBasicBoard::getPly50Moves ( ) const

inline

Definition at line 63 of file board.h.

Referenced by getFEN(), and bPositionEvaluation::isGameEnded().

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setPly50Moves()

void bBasicBoard::setPly50Moves ( movenum50_t const  p )

inline

Definition at line 64 of file board.h.

Referenced by bBasicBoard().

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incPly50Moves()

movenum50_t bBasicBoard::incPly50Moves ( )

inline

Definition at line 65 of file board.h.

clearPly50Moves()

void bBasicBoard::clearPly50Moves ( )

inline

Definition at line 66 of file board.h.

Referenced by setCapture().

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canCastle() [1/2]

bool bBasicBoard::canCastle

(

)

const

Definition at line 243 of file board.cpp.

Referenced by calcHash(), bWhiteKing::GenerateMoves(), bBlackKing::GenerateMoves(), getFEN(), and bBoard::invertColours().

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canCastle() [2/2]

bool bBasicBoard::canCastle

(

uint8_t const

f

)

const

Definition at line 249 of file board.cpp.

setCastle() [1/2]

void bBasicBoard::setCastle

(

uint8_t const

f

)

Definition at line 260 of file board.cpp.

Referenced by bBasicBoard(), bBoard::invertColours(), and setCastle().

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setCastle() [2/2]

void bBasicBoard::setCastle	(	uint8_t const	f,
		bool const	c
	)

Definition at line 254 of file board.cpp.

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clearCastle()

void bBasicBoard::clearCastle

(

uint8_t const

f

)

Definition at line 269 of file board.cpp.

Referenced by setCapture(), and setCastle().

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isInCheck()

bool bBasicBoard::isInCheck

(

)

const

Definition at line 278 of file board.cpp.

Referenced by SearchAlphaBeta::CalcBestMove(), SearchAlphaBetaFH::CalcBestMove(), canCastle(), and SearchAlphaBeta::Quiescence().

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setInCheck()

void bBasicBoard::setInCheck ( )

virtual

Reimplemented in bBoard.

Definition at line 283 of file board.cpp.

Referenced by bBoard::setInCheck().

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clearInCheck()

void bBasicBoard::clearInCheck

(

)

Definition at line 288 of file board.cpp.

whiteToMove()

bool bBasicBoard::whiteToMove ( ) const

inline

Definition at line 80 of file board.h.

Referenced by cmd_usermove::execute(), bBoard::invertColours(), bPositionEvaluation::isGameEnded(), bBoard::minimizing(), bGame::playGameMove(), and bSearchAlgorithm::SearchBestMove().

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getMoveNumber()

int16_t bBasicBoard::getMoveNumber ( ) const

inline

Definition at line 81 of file board.h.

Referenced by getFEN().

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getColourToMove()

side_t bBasicBoard::getColourToMove ( ) const

inline

Definition at line 82 of file board.h.

Referenced by bMoveList::atLeastOneMovePossible(), calcHash(), bMoveList::generateMoves(), getFEN(), makeBoardMove(), and unMakeBoardMove().

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getPiece() [1/2]

piece_t bBasicBoard::getPiece

(

case_t const

bc

)

const

1 for white, 2 for black

Definition at line 157 of file board.cpp.

Referenced by bWhitePawn::addCapturePawnMove(), bBlackPawn::addCapturePawnMove(), bWhitePawn::addCapturePromotionMove(), bBlackPawn::addCapturePromotionMove(), bWhitePiece::addMove(), bBlackPiece::addMove(), bWhitePiece::addMoves(), bBlackPiece::addMoves(), bMoveList::atLeastOneMovePossible(), calcHash(), bBoard::calcPieces(), bWhitePiece::canMovePreflightCheck(), bBlackPiece::canMovePreflightCheck(), bWhitePiece::canMovePreflightCheck(), bBlackPiece::canMovePreflightCheck(), bMoveList::generateMoves(), PosEvalStaticBoard::getEndgameEvaluation(), PosEvalPiecesOnly::getEvaluation(), getFEN(), PosEvalStaticBoard::getMatingEvaluation(), PosEvalStaticBoard::getPawnEndingEvaluation(), PosEvalStaticBoard::getRelativeBoardEval(), bBoard::invertColours(), bPieceColour::isAttackedBySlider(), makeBoardMove(), and unMakeBoardMove().

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getPiece() [2/2]

piece_t bBasicBoard::getPiece	(	column_t const	iColumn,
		rank_t const	iRank
	)		const

Definition at line 162 of file board.cpp.

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getPieceCtl()

piece_t bBasicBoard::getPieceCtl	(	column_t const	iColumn,
		rank_t const	iRank
	)		const

retrieve piece with bounds checking, return field empty in case of out of bounds

Definition at line 171 of file board.cpp.

Referenced by bPieceColour::isAttackedByPiece().

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setPiece() [1/2]

void bBasicBoard::setPiece	(	case_t const	bc,
		piece_t const	piece
	)

used for promotion move generation

Definition at line 190 of file board.cpp.

Referenced by bMoveList::addBlackPromotionIfValid(), bMoveList::addWhitePromotionIfValid(), makeBoardMove(), and unMakeBoardMove().

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setPiece() [2/2]

void bBasicBoard::setPiece	(	case_t const	bc,
		uint8_t const	piece
	)

used for unMakeBoardMove

Definition at line 196 of file board.cpp.

setGetPiece()

piece_t bBasicBoard::setGetPiece	(	column_t const	newcol,
		rank_t const	newrank,
		piece_t const	piece
	)

used for makeBoardMove

Definition at line 202 of file board.cpp.

Referenced by makeBoardMove().

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removePiece()

piece_t bBasicBoard::removePiece	(	column_t const	newcol,
		rank_t const	newrank
	)

used for makeBoardMove

Definition at line 212 of file board.cpp.

Referenced by makeBoardMove().

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movePiece()

void bBasicBoard::movePiece	(	case_t const	f,
		case_t const	t,
		piece_t const	p
	)

Definition at line 317 of file board.cpp.

swapPiece()

void bBasicBoard::swapPiece	(	case_t const	t,
		piece_t const	op,
		piece_t const	np
	)

Definition at line 324 of file board.cpp.

clearPiece()

void bBasicBoard::clearPiece

(

case_t const

bc

)

Definition at line 228 of file board.cpp.

Referenced by makeBoardMove(), and unMakeBoardMove().

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moveWhiteKing()

void bBasicBoard::moveWhiteKing	(	case_t const	f,
		case_t const	t
	)

Definition at line 330 of file board.cpp.

moveBlackKing()

void bBasicBoard::moveBlackKing	(	case_t const	f,
		case_t const	t
	)

Definition at line 338 of file board.cpp.

isFieldEmpty() [1/2]

bool bBasicBoard::isFieldEmpty

(

case_t const

bc

)

const

Definition at line 178 of file board.cpp.

Referenced by bWhitePiece::addMove(), bBlackPiece::addMove(), bWhitePiece::addMoves(), bBlackPiece::addMoves(), bWhitePawn::addNonCaptureDoublePawnMove(), bBlackPawn::addNonCaptureDoublePawnMove(), bWhitePawn::addNonCapturePawnMove(), bBlackPawn::addNonCapturePawnMove(), bWhitePawn::addNonCapturePromotionMove(), bBlackPawn::addNonCapturePromotionMove(), bWhitePawn::GenerateMoves(), bBlackPawn::GenerateMoves(), bWhiteKing::GenerateMoves(), and bBlackKing::GenerateMoves().

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isFieldEmpty() [2/2]

bool bBasicBoard::isFieldEmpty	(	column_t const	iColumn,
		rank_t const	iRank
	)		const

Definition at line 183 of file board.cpp.

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setCapture()

void bBasicBoard::setCapture ( piece_t const  p, case_t const  c  )

virtual

Clear castle flag if rook captured update piece counter, update hash, clear field.

Reimplemented in bBoard.

Definition at line 297 of file board.cpp.

Referenced by bBoard::setCapture().

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getWhiteKingPos()

case_t bBasicBoard::getWhiteKingPos ( ) const

inline

Definition at line 102 of file board.h.

Referenced by bMoveList::addBlackMoveIfValid(), bMoveList::addBlackPromotionIfValid(), bMoveList::addWhiteMoveIfValid(), bMoveList::addWhitePromotionIfValid(), bWhitePiece::canMovePreflightCheck(), bWhitePiece::canMovePreflightCheck(), bBlackPiece::isAttacked(), and bPositionEvaluation::isGameEnded().

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getBlackKingPos()

case_t bBasicBoard::getBlackKingPos ( ) const

inline

Definition at line 103 of file board.h.

Referenced by bMoveList::addBlackMoveIfValid(), bMoveList::addBlackPromotionIfValid(), bMoveList::addWhiteMoveIfValid(), bMoveList::addWhitePromotionIfValid(), bBlackPiece::canMovePreflightCheck(), bBlackPiece::canMovePreflightCheck(), bWhitePiece::isAttacked(), and bPositionEvaluation::isGameEnded().

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getFEN()

bFen bBasicBoard::getFEN

(

)

const

Definition at line 114 of file board.cpp.

Referenced by bel_debug::execute().

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getHashStr()

std::string bBasicBoard::getHashStr

(

)

const

Definition at line 542 of file board.cpp.

getHash()

hashkey_t bBasicBoard::getHash ( ) const

inline

Definition at line 106 of file board.h.

setHash()

void bBasicBoard::setHash ( hashkey_t const  newHash )

inline

Definition at line 107 of file board.h.

makeBoardMove()

u_positionFlags_t bBasicBoard::makeBoardMove	(	column_t const	oldcol,
		rank_t const	oldrank,
		column_t const	newcol,
		rank_t const	newrank,
		piece_t const	promotion
	)

apply move to check if in check only, board to be discarded as it will be in incomplete state, no hash update no check flag set, etc.

Parameters

oldcol	column from
oldrank	rank from
newcol	column to
newrank	rank to
promotion	piece

Returns

captured piece

Definition at line 400 of file board.cpp.

Referenced by bWhitePiece::canMovePreflightCheck(), bBlackPiece::canMovePreflightCheck(), bWhitePiece::canMovePreflightCheck(), and bBlackPiece::canMovePreflightCheck().

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unMakeBoardMove()

void bBasicBoard::unMakeBoardMove	(	case_t const &	cf,
		column_t const	newcol,
		rank_t const	newrank,
		u_positionFlags_t const	oldFlags,
		piece_t const	promotion
	)

undo makeBoardMove, restoring previous situation

Parameters

cf	case from
newcol	column to
newrank	rank to
oldFlags	the positionFlags of the old position
promotion	move signals return to pawn

Definition at line 481 of file board.cpp.

Referenced by bWhitePiece::canMovePreflightCheck(), bBlackPiece::canMovePreflightCheck(), bWhitePiece::canMovePreflightCheck(), and bBlackPiece::canMovePreflightCheck().

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calcHash()

void bBasicBoard::calcHash ( )

protected

Set hash based on board position, also calc pieces Byte 0: bits 4-6 capture count (masked) bit 7 player to move We are using 64 bits for hash.

Todo:

TOCHECK: increase to 64 bits, is there added value

Definition at line 355 of file board.cpp.

Referenced by bBasicBoard(), and bBoard::invertColours().

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setPieceKU()

void bBasicBoard::setPieceKU ( case_t const  bc, piece_t const  piece  )

protected

calculate and set hash

used for setboard only

Definition at line 221 of file board.cpp.

Referenced by bBasicBoard(), and bBoard::invertColours().

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Member Data Documentation

u_positionFlags

uint64_t bBasicBoard::u_positionFlags = 0ULL

Definition at line 122 of file board.h.

Referenced by bBasicBoard(), makeBoardMove(), and unMakeBoardMove().

m_whiteKing

case_t bBasicBoard::m_whiteKing

Definition at line 124 of file board.h.

Referenced by getWhiteKingPos(), makeBoardMove(), moveWhiteKing(), setPieceKU(), and unMakeBoardMove().

m_blackKing

case_t bBasicBoard::m_blackKing

Definition at line 125 of file board.h.

Referenced by getBlackKingPos(), makeBoardMove(), moveBlackKing(), setPieceKU(), and unMakeBoardMove().

m_ply

plynum_t bBasicBoard::m_ply

Definition at line 126 of file board.h.

Referenced by decPly(), getColourToMove(), getMoveNumber(), getPly(), incPly(), setPly(), and whiteToMove().

m_ep

case_t bBasicBoard::m_ep

Definition at line 127 of file board.h.

Referenced by clearEp(), getEp(), and setEp().

m_ply50moves

movenum50_t bBasicBoard::m_ply50moves

Definition at line 128 of file board.h.

Referenced by clearPly50Moves(), getPly50Moves(), incPly50Moves(), and setPly50Moves().

m_castling

uint8_t bBasicBoard::m_castling

Definition at line 129 of file board.h.

Referenced by canCastle(), canCastle(), clearCastle(), clearInCheck(), isInCheck(), setCastle(), and setInCheck().

m_capturedpiece

piece_t bBasicBoard::m_capturedpiece

4 castling bits as uints as copy ctor stumbles on bool array

Definition at line 130 of file board.h.

Referenced by bBoard::isCapture(), and bBoard::setCapture().

[union]

union { ... } bBasicBoard

m_hash

hashkey_t bBasicBoard::m_hash

protected

Definition at line 133 of file board.h.

Referenced by calcHash(), clearCastle(), getHash(), getHashStr(), moveBlackKing(), movePiece(), moveWhiteKing(), setCapture(), setCastle(), setEp(), setHash(), and swapPiece().