20 lines
781 B
Rust
20 lines
781 B
Rust
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//! Castling flags.
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pub const CASTLING_WH_K: u8 = 0b00000001;
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pub const CASTLING_WH_Q: u8 = 0b00000010;
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pub const CASTLING_WH_MASK: u8 = 0b00000011;
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pub const CASTLING_BL_K: u8 = 0b00000100;
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pub const CASTLING_BL_Q: u8 = 0b00001000;
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pub const CASTLING_BL_MASK: u8 = 0b00001100;
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pub const CASTLING_K_MASK: u8 = 0b00000101;
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pub const CASTLING_Q_MASK: u8 = 0b00001010;
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pub const CASTLING_MASK: u8 = 0b00001111;
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/// Castling sides parameters.
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///
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/// For both sides, the 3-uple contains files that should be empty
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/// and not attacked, an optional file that should be empty for
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/// queen-side, and the castling side-mask.
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pub const CASTLING_SIDES: [([i8; 2], Option<i8>, u8); 2] =
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[([5i8, 6i8], None, CASTLING_K_MASK), ([3i8, 2i8], Some(1i8), CASTLING_Q_MASK)];
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