PolyglotBook Class Reference

Manages loading and probing of Polyglot opening books. More...

#include <polyglot_book.hpp>

Public Member Functions
	PolyglotBook (const std::string &book_path)
	Constructs a PolyglotBook instance.
	~PolyglotBook ()
bool	load ()
	Loads the book into memory.
chess::Move	probe (const chess::Board &board, const std::string &bookName="Book")
	Probes the book for a move matching the current board state.

Private Member Functions
uint64_t	compute_polyglot_key (const chess::Board &board) const
chess::Move	polyglot_to_move (uint16_t poly_move, const chess::Board &board) const

Private Attributes
std::string	book_path_
std::vector< PolyglotEntry >	entries_

Detailed Description

Manages loading and probing of Polyglot opening books.

Constructor & Destructor Documentation

PolyglotBook()

PolyglotBook::PolyglotBook

(

const std::string &

book_path

)

Constructs a PolyglotBook instance.

Parameters

book_path

File path to the Polyglot (.bin) file.

~PolyglotBook()

PolyglotBook::~PolyglotBook

(

)

Member Function Documentation

compute_polyglot_key()

uint64_t PolyglotBook::compute_polyglot_key ( const chess::Board & board ) const

private

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load()

bool PolyglotBook::load

(

)

Loads the book into memory.

Returns

true if successful, false if the file could not be read.

polyglot_to_move()

chess::Move PolyglotBook::polyglot_to_move ( uint16_t poly_move, const chess::Board & board ) const

private

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probe()

chess::Move PolyglotBook::probe	(	const chess::Board &	board,
		const std::string &	bookName = "Book" )

Probes the book for a move matching the current board state.

Moves are selected probabilistically based on their relative weights.

Parameters

board	The chess board to probe.
bookName	Optional name for logging purposes.

Returns

The selected move, or NO_MOVE if no match is found.

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Member Data Documentation

book_path_

std::string PolyglotBook::book_path_

private

entries_

std::vector<PolyglotEntry> PolyglotBook::entries_

private

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The documentation for this class was generated from the following files:

• engine/src/book/polyglot_book.hpp
• engine/src/book/polyglot_book.cpp