chessmodule/movegengo

package movegengo

type GameState struct {
    colours [2]uint64
    pieces  [12]uint64
    info    uint8
    ep      uint8
}

func DefaultGameStateColour() uint8 {
    return 1
}

func NewGameState() *GameState {
    return &GameState{
        // default concated layouts
        colours: [2]uint64{
            BPieces,
            WPieces,
        },

        // Default layouts
        pieces: [12]uint64{
            BPawn,
            BRook,
            BKnight,
            BBishop,
            BQueen,
            BKing,

            WPawn,
            WRook,
            WKnight,
            WBishop,
            WQueen,
            WKing,
        },

        // castling: (5)0b11111, 4 == active player.
        // 0:blackkingcast, 1:whitekingcast, 2:blackqueencast, 3:whitequeencast, 4:white
        info: 15 | (DefaultGameStateColour() << 5),

        // en passant position. 0 means no en passant
        ep: 0,
    }
}

// String returns the FEN string for the board
func (state *GameState) String() string {
    return ""
}

// BasicOutput uses letters to indicate pieces
func (state *GameState) BasicOutput() string {
    //pieces := []string{"-", "q", "k", ""}
    return ""
}

// PrettyOutput uses unicodes to indicate pieces
func (state *GameState) PrettyOutput() string {
    //pieces := []string{" ", "♔", "♕", "♖", "♗", "♘", "♙", "♚", "♛", "♜", "♝", "♞", "♟"}

    return ""
}