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[board] Implement BitAnd and BitOr on BitBoard and make it's u64 private

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This commit is contained in:
Eryn Wells 2023-12-22 08:50:03 -08:00
parent aa7e901241
commit 6af64171a2
2 changed files with 69 additions and 28 deletions
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54
board/src/position.rs
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@ -29,23 +29,23 @@ pub struct Position {
impl Position {
fn empty() -> Position {
Position {
pieces_per_color: [BitBoard(0), BitBoard(0)],
pieces_per_color: [BitBoard::empty(), BitBoard::empty()],
pieces_per_type: [
[
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
],
[
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard(0),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
BitBoard::empty(),
],
],
}
@ -54,27 +54,27 @@ impl Position {
/// Return a starting position.
fn starting() -> Position {
let white_pieces = [
BitBoard(0x00FF000000000000),
BitBoard(0x4200000000000000),
BitBoard(0x2400000000000000),
BitBoard(0x8100000000000000),
BitBoard(0x1000000000000000),
BitBoard(0x8000000000000000),
BitBoard::from_bit_field(0x00FF000000000000),
BitBoard::from_bit_field(0x4200000000000000),
BitBoard::from_bit_field(0x2400000000000000),
BitBoard::from_bit_field(0x8100000000000000),
BitBoard::from_bit_field(0x1000000000000000),
BitBoard::from_bit_field(0x8000000000000000),
];
let black_pieces = [
BitBoard(0xFF00),
BitBoard(0x0042),
BitBoard(0x0024),
BitBoard(0x0081),
BitBoard(0x0010),
BitBoard(0x0080),
BitBoard::from_bit_field(0xFF00),
BitBoard::from_bit_field(0x0042),
BitBoard::from_bit_field(0x0024),
BitBoard::from_bit_field(0x0081),
BitBoard::from_bit_field(0x0010),
BitBoard::from_bit_field(0x0080),
];
Position {
pieces_per_color: [
BitBoard(white_pieces.iter().map(|bb| bb.0).fold(0, |a, b| a | b)),
BitBoard(black_pieces.iter().map(|bb| bb.0).fold(0, |a, b| a | b)),
white_pieces.iter().fold(BitBoard::empty(), |a, b| a | b),
black_pieces.iter().fold(BitBoard::empty(), |a, b| a | b),
],
pieces_per_type: [white_pieces, black_pieces],
}