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Add 'Direction::move_square'

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This commit is contained in:
Bruno BELANYI 2022-07-18 00:03:35 +02:00
parent 1ab024fce8
commit 251c10cbc7
1 changed files with 7 additions and 2 deletions
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9
src/board/directions.rs
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@ -1,4 +1,4 @@
use super::{Bitboard, Rank}; use super::{Bitboard, Rank, Square};
/// A direction on the board. Either along the rook, bishop, or knight directions /// A direction on the board. Either along the rook, bishop, or knight directions
#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)] #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
@ -67,6 +67,12 @@ impl Direction {
Self::KNIGHT_DIRECTIONS.iter().cloned() Self::KNIGHT_DIRECTIONS.iter().cloned()
} }
/// Move a [Square] along the given [Direction], unless it would wrap at the end of the board
pub fn move_square(self, square: Square) -> Option<Square> {
let res = self.move_board(square.into_bitboard());
res.into_iter().next()
}
/// Move every piece on a board along the given direction. Do not wrap around the board. /// Move every piece on a board along the given direction. Do not wrap around the board.
#[inline(always)] #[inline(always)]
pub fn move_board(self, board: Bitboard) -> Bitboard { pub fn move_board(self, board: Bitboard) -> Bitboard {
@ -105,7 +111,6 @@ impl Direction {
#[cfg(test)] #[cfg(test)]
mod test { mod test {
use super::*; use super::*;
use crate::board::Square;
#[test] #[test]
fn north() { fn north() {