position

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v0.0.0-...-831597a Latest Latest Go to latest Published: Feb 11, 2025 License: GPL-3.0 Imports: 6 Imported by: 0

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Valid go.mod file
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Repository

github.com/rylenko/limbo

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Documentation ¶

Index ¶

type CastlingRights
type ColorSide
- func NewColorSideFromFEN(fen string) (ColorSide, error)
- func (colorSide ColorSide) String() string
type Position
- func (position *Position) DeepCopy() (*Position, error)
- func (position *Position) MoveRaw(move Move) error

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type CastlingRights ¶

type CastlingRights []ColorSide

CastlingRights is a slice of color sides available for castling.

type ColorSide ¶

type ColorSide uint8

ColorSide represents chess board's queen and king sides for each color.

const (
	ColorSideNil ColorSide = iota
	ColorSideBlackKing
	ColorSideBlackQueen
	ColorSideWhiteKing
	ColorSideWhiteQueen
)

func NewColorSideFromFEN ¶

func NewColorSideFromFEN(fen string) (ColorSide, error)

NewColorSideFromFEN parses FEN to corresponding ColorSide.

FEN argument examples: "k", "q", "K", "Q".

func (ColorSide) String ¶

func (colorSide ColorSide) String() string

String returns string representation of current color side.

type Position ¶

type Position struct {
	// contains filtered or unexported fields
}

Position represents the state of the game at a certain point in time.

func NewPosition ¶

func NewPosition(
	board *Board,
	activeColor Color,
	castlingRights CastlingRights,
	enPassantSquare Square,
	halfMoveClock uint8,
	fullMoveNumber uint16,
) *Position

NewPosition creates a new position with passed parameters.

func NewPositionFromFEN ¶

func NewPositionFromFEN(fen string) (*Position, error)

NewPositionFromFEN parses FEN to the Position structure.

FEN argument example: "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1".

func NewPositionStart ¶

func NewPositionStart() (*Position, error)

NewPositionStart creates game start position.

func (*Position) DeepCopy ¶

func (position *Position) DeepCopy() (*Position, error)

Copy deeply copies current position.

func (*Position) MoveRaw ¶

func (position *Position) MoveRaw(move Move) error

MoveRaw makes a raw move in the current position.

Note that the move is raw, so it can, for example, put the active color in check.

TODO: test.

Source Files ¶

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