Collaboration diagram for Moves:

Files
file	Attacks.hpp
file	Magics.hpp
file	Move.hpp
file	MoveGen.hpp
file	Patterns.hpp
file	Perft.hpp
file	PseudoLegal.hpp

Namespaces
namespace	chess
namespace	chess::moves
namespace	chess::moves::magics
namespace	chess::moves::patterns
namespace	chess::moves::pseudo_legal

Classes
struct	chess::moves::Move
struct	chess::moves::PerftResult

Functions
template<Color Side>
constexpr auto	chess::moves::num_squares_attacked (const Pieces &pieces, Bitboard targetSquares, Bitboard enemyPieces, bool includeKing=true) noexcept -> size_t
constexpr auto	operator<=> (const Move &first, const Move &second) noexcept -> std::strong_ordering
template<bool IsRoot = true>
auto	perft (size_t depth, const game::Position &startingPosition) -> PerftResult
template<Color Side>
constexpr auto	chess::moves::squares_attacked (const Pieces &pieces, Bitboard targetSquares, Bitboard enemyPieces) noexcept -> bool
constexpr auto	chess::moves::MAX_MOVES = 256uz
auto	chess::moves::magics::bishop (Square bishopPos, Bitboard occupiedSquares, Bitboard friendlyPieces) -> Bitboard
auto	chess::moves::magics::rook (Square rookPos, Bitboard occupiedSquares, Bitboard friendlyPieces) -> Bitboard
auto	chess::moves::magics::queen (Square queenPos, Bitboard occupiedSquares, Bitboard friendlyPieces) -> Bitboard
template<Color Side>
constexpr auto	chess::moves::patterns::pawn_pushes (Bitboard starting) noexcept -> Bitboard
template<Color Side>
constexpr auto	chess::moves::patterns::pawn_double_pushes (Bitboard starting) noexcept -> Bitboard
template<Color Side>
constexpr auto	chess::moves::patterns::pawn_attacks (Bitboard starting) noexcept -> Bitboard
constexpr auto	chess::moves::patterns::knight (Bitboard starting) noexcept -> Bitboard
constexpr auto	chess::moves::patterns::bishop (Bitboard starting) noexcept -> Bitboard
constexpr auto	chess::moves::patterns::rook (Bitboard starting) noexcept -> Bitboard
constexpr auto	chess::moves::patterns::queen (Bitboard starting) noexcept -> Bitboard
constexpr auto	chess::moves::patterns::king (Bitboard starting) noexcept -> Bitboard
template<Color Side>
constexpr auto	chess::moves::pseudo_legal::pawn_pushes (Bitboard startingPawns, Bitboard emptySquares) noexcept -> Bitboard
template<Color Side>
constexpr auto	chess::moves::pseudo_legal::pawn_double_pushes (Bitboard startingPawns, Bitboard occupiedSquares) noexcept -> Bitboard
template<Color Side>
constexpr auto	chess::moves::pseudo_legal::pawn_captures (Bitboard startingPawns, Bitboard enemyPieces) noexcept -> Bitboard
constexpr auto	chess::moves::pseudo_legal::knight (Bitboard startingKnights, Bitboard friendlyPieces) noexcept -> Bitboard
constexpr auto	chess::moves::pseudo_legal::bishop (Bitboard startingBishops, Bitboard emptySquares, Bitboard friendlyPieces) noexcept -> Bitboard
constexpr auto	chess::moves::pseudo_legal::rook (Bitboard startingRooks, Bitboard emptySquares, Bitboard friendlyPieces) noexcept -> Bitboard
constexpr auto	chess::moves::pseudo_legal::queen (Bitboard startingQueens, Bitboard emptySquares, Bitboard friendlyPieces) noexcept -> Bitboard
constexpr auto	chess::moves::pseudo_legal::king (Bitboard startingKing, Bitboard friendlyPieces) noexcept -> Bitboard
constexpr auto	castle_kingside (Color color) noexcept -> Move
constexpr auto	castle_queenside (Color color) noexcept -> Move
constexpr auto	promotion (File file, Color color, PieceType promotedType=PieceType::Queen) noexcept -> Move
constexpr auto	castle_queenside (Color color) noexcept -> Move
constexpr auto	promotion (File file, Color color, PieceType promotedType=PieceType::Queen) noexcept -> Move
constexpr auto	castle_queenside (Color color) noexcept -> Move
constexpr auto	promotion (File file, Color color, PieceType promotedType=PieceType::Queen) noexcept -> Move
constexpr auto	castle_queenside (Color color) noexcept -> Move
constexpr auto	promotion (File file, Color color, PieceType promotedType=PieceType::Queen) noexcept -> Move
constexpr auto	castle_queenside (Color color) noexcept -> Move
constexpr auto	promotion (File file, Color color, PieceType promotedType=PieceType::Queen) noexcept -> Move
constexpr auto	castle_queenside (Color color) noexcept -> Move
constexpr auto	promotion (File file, Color color, PieceType promotedType=PieceType::Queen) noexcept -> Move

Detailed Description

Classes for modeling moves. In the search tree, positions are nodes and moves are edges between them.

Function Documentation

◆ bishop() [1/3]

auto chess::moves::magics::bishop	(	Square	bishopPos,
		Bitboard	occupiedSquares,
		Bitboard	friendlyPieces ) -> Bitboard

nodiscard

Calculates all pseudo-legal bishop moves.

The returned move set includes possible captures (i.e., rays ending where an enemy piece is located), and also considers blocking friendly pieces.

◆ bishop() [2/3]

auto chess::moves::patterns::bishop ( Bitboard starting ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all possible bishop moves from the given starting square.

Definition at line 152 of file Patterns.hpp.

◆ bishop() [3/3]

auto chess::moves::pseudo_legal::bishop	(	Bitboard	startingBishops,
		Bitboard	emptySquares,
		Bitboard	friendlyPieces ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all pseudo-legal bishop moves.

The returned move set includes possible captures (i.e., rays ending where an enemy piece is located), and also considers blocking friendly pieces.

Definition at line 328 of file PseudoLegal.hpp.

◆ castle_kingside()

auto castle_kingside ( Color color ) -> Move

Creates a move encoding kingside ("short") castling for the given color.

See also: castle_queenside()

Definition at line 304 of file Move.hpp.

◆ castle_queenside() [1/6]

auto castle_queenside ( Color color ) -> Move

Creates a move encoding queenside ("long") castling for the given color.

See also: castle_kingside()

Definition at line 315 of file Move.hpp.

◆ castle_queenside() [2/6]

auto castle_queenside ( Color color ) -> Move

Creates a move encoding queenside ("long") castling for the given color.

See also: castle_kingside()

Definition at line 315 of file Move.hpp.

◆ castle_queenside() [3/6]

auto castle_queenside ( Color color ) -> Move

Creates a move encoding queenside ("long") castling for the given color.

See also: castle_kingside()

Definition at line 315 of file Move.hpp.

◆ castle_queenside() [4/6]

auto castle_queenside ( Color color ) -> Move

Creates a move encoding queenside ("long") castling for the given color.

See also: castle_kingside()

Definition at line 315 of file Move.hpp.

◆ castle_queenside() [5/6]

auto castle_queenside ( Color color ) -> Move

Creates a move encoding queenside ("long") castling for the given color.

See also: castle_kingside()

Definition at line 315 of file Move.hpp.

◆ castle_queenside() [6/6]

auto castle_queenside ( Color color ) -> Move

Creates a move encoding queenside ("long") castling for the given color.

See also: castle_kingside()

Definition at line 315 of file Move.hpp.

◆ king() [1/2]

auto chess::moves::patterns::king ( Bitboard starting ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all possible king moves from the given starting position. Typically the starting bitboard will have only a single bit set, but this method can technically calculate moves for both kings at once, if both of their positions are set in the bitboard sent to this function.

Definition at line 181 of file Patterns.hpp.

◆ king() [2/2]

auto chess::moves::pseudo_legal::king	(	Bitboard	startingKing,
		Bitboard	friendlyPieces ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all pseudo-legal king moves.

Definition at line 163 of file PseudoLegal.hpp.

◆ knight() [1/2]

auto chess::moves::patterns::knight ( Bitboard starting ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all possible knight moves from the given starting position.

Definition at line 128 of file Patterns.hpp.

◆ knight() [2/2]

auto chess::moves::pseudo_legal::knight	(	Bitboard	startingKnights,
		Bitboard	friendlyPieces ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all pseudo-legal knight moves.

Definition at line 156 of file PseudoLegal.hpp.

◆ num_squares_attacked()

template<Color Side>

auto chess::moves::num_squares_attacked	(	const Pieces &	pieces,
		Bitboard	targetSquares,
		Bitboard	enemyPieces,
		bool	includeKing = true ) -> size_t

nodiscardconstexprnoexcept

Returns the number of targetSquares that any of the pieces attack. This function considers only pseudo-legal moves, not strictly legal moves. King attacks will only be considered if includeKing is true.

Template Parameters

Side	The color that the pieces represent.

See also: squares_attacked()

Definition at line 131 of file Attacks.hpp.

◆ operator<=>()

auto operator<=>	(	const Move &	first,
		const Move &	second ) -> std::strong_ordering

Provides a strong ordering of moves. This can be useful for sorting lists of moves.

Definition at line 145 of file Move.hpp.

◆ pawn_attacks()

template<Color Side>

auto chess::moves::patterns::pawn_attacks ( Bitboard starting ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all squares that are attacked by pawns from the given starting position and color. This can be used to calculate possible pawn captures.

Definition at line 120 of file Patterns.hpp.

◆ pawn_captures()

template<Color Side>

auto chess::moves::pseudo_legal::pawn_captures	(	Bitboard	startingPawns,
		Bitboard	enemyPieces ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all pseudo-legal pawn captures. The returned bitboard has 1 bits set where each pawn would land after making a capture. Note that this function does not generate possible en passant captures.

Definition at line 149 of file PseudoLegal.hpp.

◆ pawn_double_pushes() [1/2]

template<Color Side>

auto chess::moves::patterns::pawn_double_pushes ( Bitboard starting ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all possible pawn double pushes for the given starting position and color.

Definition at line 105 of file Patterns.hpp.

◆ pawn_double_pushes() [2/2]

template<Color Side>

auto chess::moves::pseudo_legal::pawn_double_pushes	(	Bitboard	startingPawns,
		Bitboard	occupiedSquares ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all pseudo-legal pawn double pushes.

Definition at line 132 of file PseudoLegal.hpp.

◆ pawn_pushes() [1/2]

template<Color Side>

auto chess::moves::patterns::pawn_pushes ( Bitboard starting ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all possible pawn pushes for the given starting position and color.

Definition at line 98 of file Patterns.hpp.

◆ pawn_pushes() [2/2]

template<Color Side>

auto chess::moves::pseudo_legal::pawn_pushes	(	Bitboard	startingPawns,
		Bitboard	emptySquares ) -> Bitboard

nodiscardconstexprnoexcept

Calculates all pseudo-legal pawn pushes.

Definition at line 124 of file PseudoLegal.hpp.

◆ perft()

template<bool IsRoot = true>

auto perft	(	size_t	depth,
		const game::Position &	startingPosition ) -> PerftResult

Computes perft of the given position.

Definition at line 119 of file Perft.hpp.

◆ promotion() [1/6]

auto promotion	(	File	file,
		Color	color,
		PieceType	promotedType = PieceType::Queen ) -> Move

Creates a move encoding a pawn promotion. This function creates simple promotions that don't involve captures.