Implement 'Default' for 'ChessBoard'
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@ -1,4 +1,4 @@
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use super::{Bitboard, CastleRights, Color, File, Move, Piece, Square};
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use super::{Bitboard, CastleRights, Color, File, Move, Piece, Rank, Square};
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/// Represent an on-going chess game.
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/// Represent an on-going chess game.
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#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
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#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
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@ -179,3 +179,39 @@ impl ChessBoard {
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self.side = !self.side;
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self.side = !self.side;
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}
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}
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}
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}
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/// Use the starting position as a default value, corresponding to the
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/// "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1" FEN string
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impl Default for ChessBoard {
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fn default() -> Self {
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Self {
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piece_occupancy: [
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// King
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Square::E1 | Square::E8,
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// Queen
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Square::D1 | Square::D8,
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// Rook
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Square::A1 | Square::A8 | Square::H1 | Square::H8,
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// Bishop
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Square::C1 | Square::C8 | Square::F1 | Square::F8,
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// Knight
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Square::B1 | Square::B8 | Square::G1 | Square::G8,
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// Pawn
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Rank::Second.into_bitboard() | Rank::Seventh.into_bitboard(),
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],
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color_occupancy: [
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Rank::First.into_bitboard() | Rank::Second.into_bitboard(),
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Rank::Seventh.into_bitboard() | Rank::Eighth.into_bitboard(),
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],
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combined_occupancy: Rank::First.into_bitboard()
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| Rank::Second.into_bitboard()
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| Rank::Seventh.into_bitboard()
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| Rank::Eighth.into_bitboard(),
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castle_rights: [CastleRights::BothSides; 2],
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en_passant: None,
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half_move_clock: 0,
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total_plies: 0,
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side: Color::White,
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}
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}
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}
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