engine: use rays for move generation
This commit is contained in:
parent
ce62d3ab3a
commit
9595d0f435
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@ -3,7 +3,7 @@
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TEMPLATE = """\
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/// Pre-computed king rays.
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const KING_RAYS: [Bitboard; 64] = [
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pub const KING_RAYS: [Bitboard; 64] = [
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{}
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];
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"""
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@ -3,7 +3,7 @@
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TEMPLATE = """\
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/// Pre-computed knight rays.
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const KNIGHT_RAYS: [Bitboard; 64] = [
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pub const KNIGHT_RAYS: [Bitboard; 64] = [
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{}
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];
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"""
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39
res/scripts/gen_pawn_captures.py
Executable file
39
res/scripts/gen_pawn_captures.py
Executable file
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@ -0,0 +1,39 @@
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#!/usr/bin/env python3
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"""Pre-compute pawn captures bitboards for each square."""
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TEMPLATE = """\
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/// Pre-computed pawn captures.
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pub const PAWN_CAPTURES: [[Bitboard; 64]; 2] = [
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[
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{}
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],
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[
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{}
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],
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];
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"""
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def bit_pos(square):
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return 1 << square
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def get_captures():
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both_captures = []
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for direction in [1, -1]:
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captures = []
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for f in range(8):
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for r in range(8):
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bitboard = 0
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prog_r = r + direction
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if 0 < prog_r < 7:
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prev_f = f - 1
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if prev_f >= 0:
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bitboard |= bit_pos(prev_f * 8 + prog_r)
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next_f = f + 1
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if next_f <= 7:
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bitboard |= bit_pos(next_f * 8 + prog_r)
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captures.append(" 0b{:064b},".format(bitboard))
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both_captures.append(captures)
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return both_captures
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CAPTURES = get_captures()
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print(TEMPLATE.format("\n".join(CAPTURES[0]), "\n".join(CAPTURES[1])))
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38
res/scripts/gen_pawn_progresses.py
Executable file
38
res/scripts/gen_pawn_progresses.py
Executable file
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@ -0,0 +1,38 @@
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#!/usr/bin/env python3
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"""Pre-compute pawn progress bitboards for each square."""
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TEMPLATE = """\
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/// Pre-computed pawn progresses.
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pub const PAWN_PROGRESSES: [[Bitboard; 64]; 2] = [
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[
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{}
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],
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[
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{}
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],
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];
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"""
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def bit_pos(square):
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return 1 << square
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def get_progresses():
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both_progresses = []
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for direction in [1, -1]:
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progresses = []
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for f in range(8):
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for r in range(8):
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bitboard = 0
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if 0 < r < 7:
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prog_r = r + direction
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bitboard |= bit_pos(f * 8 + prog_r)
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if direction == 1 and r == 1:
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bitboard |= bit_pos(f * 8 + prog_r + 1)
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elif direction == -1 and r == 6:
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bitboard |= bit_pos(f * 8 + (prog_r - 1))
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progresses.append(" 0b{:064b},".format(bitboard))
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both_progresses.append(progresses)
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return both_progresses
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PROGRESSES = get_progresses()
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print(TEMPLATE.format("\n".join(PROGRESSES[0]), "\n".join(PROGRESSES[1])))
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352
src/board.rs
352
src/board.rs
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@ -1,5 +1,7 @@
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//! Basic type definitions and functions.
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pub use crate::precomputed::*;
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/// Color type, used to index `Board.color`.
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pub type Color = usize;
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@ -34,73 +36,6 @@ pub const NUM_PIECES: usize = 6;
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/// Coords (file, rank) of a square on a board.
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pub type Square = i8;
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// Generated by gen_squares.py.
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pub const A1: Square = 0;
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pub const A2: Square = 1;
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pub const A3: Square = 2;
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pub const A4: Square = 3;
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pub const A5: Square = 4;
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pub const A6: Square = 5;
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pub const A7: Square = 6;
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pub const A8: Square = 7;
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pub const B1: Square = 8;
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pub const B2: Square = 9;
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pub const B3: Square = 10;
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pub const B4: Square = 11;
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pub const B5: Square = 12;
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pub const B6: Square = 13;
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pub const B7: Square = 14;
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pub const B8: Square = 15;
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pub const C1: Square = 16;
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pub const C2: Square = 17;
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pub const C3: Square = 18;
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pub const C4: Square = 19;
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pub const C5: Square = 20;
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pub const C6: Square = 21;
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pub const C7: Square = 22;
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pub const C8: Square = 23;
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pub const D1: Square = 24;
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pub const D2: Square = 25;
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pub const D3: Square = 26;
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pub const D4: Square = 27;
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pub const D5: Square = 28;
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pub const D6: Square = 29;
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pub const D7: Square = 30;
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pub const D8: Square = 31;
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pub const E1: Square = 32;
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pub const E2: Square = 33;
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pub const E3: Square = 34;
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pub const E4: Square = 35;
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pub const E5: Square = 36;
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pub const E6: Square = 37;
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pub const E7: Square = 38;
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pub const E8: Square = 39;
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pub const F1: Square = 40;
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pub const F2: Square = 41;
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pub const F3: Square = 42;
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pub const F4: Square = 43;
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pub const F5: Square = 44;
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pub const F6: Square = 45;
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pub const F7: Square = 46;
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pub const F8: Square = 47;
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pub const G1: Square = 48;
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pub const G2: Square = 49;
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pub const G3: Square = 50;
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pub const G4: Square = 51;
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pub const G5: Square = 52;
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pub const G6: Square = 53;
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pub const G7: Square = 54;
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pub const G8: Square = 55;
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pub const H1: Square = 56;
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pub const H2: Square = 57;
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pub const H3: Square = 58;
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pub const H4: Square = 59;
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pub const H5: Square = 60;
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pub const H6: Square = 61;
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pub const H7: Square = 62;
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pub const H8: Square = 63;
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pub const NUM_SQUARES: Square = 64;
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/// Get square from file and rank, both starting from 0.
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#[inline]
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pub const fn sq(file: i8, rank: i8) -> Square { file * 8 + rank }
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@ -135,6 +70,11 @@ pub fn sq_to_string(square: Square) -> String {
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String::from_utf8_lossy(&bytes).to_string()
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}
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/// Return the forward square for either white or black.
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pub fn forward_square(square: Square, color: Color) -> Square {
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sq(sq_file(square), sq_rank(square) + (if color == WHITE { 1 } else { -1 }))
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}
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/// Bitboard for color or piece bits.
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pub type Bitboard = u64;
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@ -204,156 +144,18 @@ pub fn count_bits(bitboard: Bitboard) -> u8 {
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count as u8
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}
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/// Debug only: pretty print a bitboard
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/// Debug only: pretty-print a bitboard to stderr.
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#[allow(dead_code)]
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pub(crate) fn draw_bits(bitboard: Bitboard, f: &mut dyn std::io::Write) {
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pub(crate) fn draw_bits(bitboard: Bitboard) {
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for rank in (0..8).rev() {
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let mut rank_str = String::with_capacity(8);
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for file in 0..8 {
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rank_str.push(if bitboard & bit_pos(sq(file, rank)) == 0 { '.' } else { '1' });
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}
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writeln!(f, "{}", rank_str).unwrap();
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eprintln!("{}", rank_str);
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}
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}
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// Generated by gen_king_rays.py.
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/// Pre-computed king rays.
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const KING_RAYS: [Bitboard; 64] = [
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0b00000000_00000000_00000000_00000000_00000000_00000000_00000011_00000010,
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0b00000000_00000000_00000000_00000000_00000000_00000000_00000111_00000101,
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0b00000000_00000000_00000000_00000000_00000000_00000000_00001110_00001010,
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0b00000000_00000000_00000000_00000000_00000000_00000000_00011100_00010100,
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0b00000000_00000000_00000000_00000000_00000000_00000000_00111000_00101000,
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0b00000000_00000000_00000000_00000000_00000000_00000000_01110000_01010000,
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0b00000000_00000000_00000000_00000000_00000000_00000000_11100000_10100000,
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0b00000000_00000000_00000000_00000000_00000000_00000000_11000000_01000000,
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0b00000000_00000000_00000000_00000000_00000000_00000011_00000010_00000011,
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0b00000000_00000000_00000000_00000000_00000000_00000111_00000101_00000111,
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0b00000000_00000000_00000000_00000000_00000000_00001110_00001010_00001110,
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0b00000000_00000000_00000000_00000000_00000000_00011100_00010100_00011100,
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0b00000000_00000000_00000000_00000000_00000000_00111000_00101000_00111000,
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0b00000000_00000000_00000000_00000000_00000000_01110000_01010000_01110000,
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0b00000000_00000000_00000000_00000000_00000000_11100000_10100000_11100000,
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0b00000000_00000000_00000000_00000000_00000000_11000000_01000000_11000000,
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0b00000000_00000000_00000000_00000000_00000011_00000010_00000011_00000000,
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0b00000000_00000000_00000000_00000000_00000111_00000101_00000111_00000000,
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0b00000000_00000000_00000000_00000000_00001110_00001010_00001110_00000000,
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0b00000000_00000000_00000000_00000000_00011100_00010100_00011100_00000000,
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0b00000000_00000000_00000000_00000000_00111000_00101000_00111000_00000000,
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0b00000000_00000000_00000000_00000000_01110000_01010000_01110000_00000000,
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0b00000000_00000000_00000000_00000000_11100000_10100000_11100000_00000000,
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0b00000000_00000000_00000000_00000000_11000000_01000000_11000000_00000000,
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0b00000000_00000000_00000000_00000011_00000010_00000011_00000000_00000000,
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0b00000000_00000000_00000000_00000111_00000101_00000111_00000000_00000000,
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0b00000000_00000000_00000000_00001110_00001010_00001110_00000000_00000000,
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0b00000000_00000000_00000000_00011100_00010100_00011100_00000000_00000000,
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0b00000000_00000000_00000000_00111000_00101000_00111000_00000000_00000000,
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0b00000000_00000000_00000000_01110000_01010000_01110000_00000000_00000000,
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0b00000000_00000000_00000000_11100000_10100000_11100000_00000000_00000000,
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0b00000000_00000000_00000000_11000000_01000000_11000000_00000000_00000000,
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0b00000000_00000000_00000011_00000010_00000011_00000000_00000000_00000000,
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0b00000000_00000000_00000111_00000101_00000111_00000000_00000000_00000000,
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0b00000000_00000000_00001110_00001010_00001110_00000000_00000000_00000000,
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0b00000000_00000000_00011100_00010100_00011100_00000000_00000000_00000000,
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0b00000000_00000000_00111000_00101000_00111000_00000000_00000000_00000000,
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0b00000000_00000000_01110000_01010000_01110000_00000000_00000000_00000000,
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0b00000000_00000000_11100000_10100000_11100000_00000000_00000000_00000000,
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0b00000000_00000000_11000000_01000000_11000000_00000000_00000000_00000000,
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0b00000000_00000011_00000010_00000011_00000000_00000000_00000000_00000000,
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0b00000000_00000111_00000101_00000111_00000000_00000000_00000000_00000000,
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0b00000000_00001110_00001010_00001110_00000000_00000000_00000000_00000000,
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0b00000000_00011100_00010100_00011100_00000000_00000000_00000000_00000000,
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0b00000000_00111000_00101000_00111000_00000000_00000000_00000000_00000000,
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0b00000000_01110000_01010000_01110000_00000000_00000000_00000000_00000000,
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0b00000000_11100000_10100000_11100000_00000000_00000000_00000000_00000000,
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0b00000000_11000000_01000000_11000000_00000000_00000000_00000000_00000000,
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0b00000011_00000010_00000011_00000000_00000000_00000000_00000000_00000000,
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0b00000111_00000101_00000111_00000000_00000000_00000000_00000000_00000000,
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0b00001110_00001010_00001110_00000000_00000000_00000000_00000000_00000000,
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0b00011100_00010100_00011100_00000000_00000000_00000000_00000000_00000000,
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0b00111000_00101000_00111000_00000000_00000000_00000000_00000000_00000000,
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0b01110000_01010000_01110000_00000000_00000000_00000000_00000000_00000000,
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0b11100000_10100000_11100000_00000000_00000000_00000000_00000000_00000000,
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0b11000000_01000000_11000000_00000000_00000000_00000000_00000000_00000000,
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0b00000010_00000011_00000000_00000000_00000000_00000000_00000000_00000000,
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0b00000101_00000111_00000000_00000000_00000000_00000000_00000000_00000000,
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0b00001010_00001110_00000000_00000000_00000000_00000000_00000000_00000000,
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0b00010100_00011100_00000000_00000000_00000000_00000000_00000000_00000000,
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0b00101000_00111000_00000000_00000000_00000000_00000000_00000000_00000000,
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0b01010000_01110000_00000000_00000000_00000000_00000000_00000000_00000000,
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0b10100000_11100000_00000000_00000000_00000000_00000000_00000000_00000000,
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0b01000000_11000000_00000000_00000000_00000000_00000000_00000000_00000000,
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];
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// Generated by gen_knight_rays.py.
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/// Pre-computed knight rays.
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const KNIGHT_RAYS: [Bitboard; 64] = [
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0b00000000_00000000_00000000_00000000_00000000_00000010_00000100_00000000,
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0b00000000_00000000_00000000_00000000_00000000_00000101_00001000_00000000,
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0b00000000_00000000_00000000_00000000_00000000_00001010_00010001_00000000,
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0b00000000_00000000_00000000_00000000_00000000_00010100_00100010_00000000,
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0b00000000_00000000_00000000_00000000_00000000_00101000_01000100_00000000,
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0b00000000_00000000_00000000_00000000_00000000_01010000_10001000_00000000,
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0b00000000_00000000_00000000_00000000_00000000_10100000_00010000_00000000,
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0b00000000_00000000_00000000_00000000_00000000_01000000_00100000_00000000,
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0b00000000_00000000_00000000_00000000_00000010_00000100_00000000_00000100,
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0b00000000_00000000_00000000_00000000_00000101_00001000_00000000_00001000,
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0b00000000_00000000_00000000_00000000_00001010_00010001_00000000_00010001,
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0b00000000_00000000_00000000_00000000_00010100_00100010_00000000_00100010,
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0b00000000_00000000_00000000_00000000_00101000_01000100_00000000_01000100,
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0b00000000_00000000_00000000_00000000_01010000_10001000_00000000_10001000,
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0b00000000_00000000_00000000_00000000_10100000_00010000_00000000_00010000,
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0b00000000_00000000_00000000_00000000_01000000_00100000_00000000_00100000,
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0b00000000_00000000_00000000_00000010_00000100_00000000_00000100_00000010,
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0b00000000_00000000_00000000_00000101_00001000_00000000_00001000_00000101,
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0b00000000_00000000_00000000_00001010_00010001_00000000_00010001_00001010,
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0b00000000_00000000_00000000_00010100_00100010_00000000_00100010_00010100,
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0b00000000_00000000_00000000_00101000_01000100_00000000_01000100_00101000,
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0b00000000_00000000_00000000_01010000_10001000_00000000_10001000_01010000,
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0b00000000_00000000_00000000_10100000_00010000_00000000_00010000_10100000,
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0b00000000_00000000_00000000_01000000_00100000_00000000_00100000_01000000,
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0b00000000_00000000_00000010_00000100_00000000_00000100_00000010_00000000,
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0b00000000_00000000_00000101_00001000_00000000_00001000_00000101_00000000,
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0b00000000_00000000_00001010_00010001_00000000_00010001_00001010_00000000,
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0b00000000_00000000_00010100_00100010_00000000_00100010_00010100_00000000,
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0b00000000_00000000_00101000_01000100_00000000_01000100_00101000_00000000,
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0b00000000_00000000_01010000_10001000_00000000_10001000_01010000_00000000,
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0b00000000_00000000_10100000_00010000_00000000_00010000_10100000_00000000,
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0b00000000_00000000_01000000_00100000_00000000_00100000_01000000_00000000,
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0b00000000_00000010_00000100_00000000_00000100_00000010_00000000_00000000,
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0b00000000_00000101_00001000_00000000_00001000_00000101_00000000_00000000,
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0b00000000_00001010_00010001_00000000_00010001_00001010_00000000_00000000,
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0b00000000_00010100_00100010_00000000_00100010_00010100_00000000_00000000,
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0b00000000_00101000_01000100_00000000_01000100_00101000_00000000_00000000,
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0b00000000_01010000_10001000_00000000_10001000_01010000_00000000_00000000,
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0b00000000_10100000_00010000_00000000_00010000_10100000_00000000_00000000,
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0b00000000_01000000_00100000_00000000_00100000_01000000_00000000_00000000,
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0b00000010_00000100_00000000_00000100_00000010_00000000_00000000_00000000,
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0b00000101_00001000_00000000_00001000_00000101_00000000_00000000_00000000,
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0b00001010_00010001_00000000_00010001_00001010_00000000_00000000_00000000,
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0b00010100_00100010_00000000_00100010_00010100_00000000_00000000_00000000,
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0b00101000_01000100_00000000_01000100_00101000_00000000_00000000_00000000,
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0b01010000_10001000_00000000_10001000_01010000_00000000_00000000_00000000,
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0b10100000_00010000_00000000_00010000_10100000_00000000_00000000_00000000,
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0b01000000_00100000_00000000_00100000_01000000_00000000_00000000_00000000,
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0b00000100_00000000_00000100_00000010_00000000_00000000_00000000_00000000,
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0b00001000_00000000_00001000_00000101_00000000_00000000_00000000_00000000,
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0b00010001_00000000_00010001_00001010_00000000_00000000_00000000_00000000,
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0b00100010_00000000_00100010_00010100_00000000_00000000_00000000_00000000,
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0b01000100_00000000_01000100_00101000_00000000_00000000_00000000_00000000,
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0b10001000_00000000_10001000_01010000_00000000_00000000_00000000_00000000,
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0b00010000_00000000_00010000_10100000_00000000_00000000_00000000_00000000,
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0b00100000_00000000_00100000_01000000_00000000_00000000_00000000_00000000,
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0b00000000_00000100_00000010_00000000_00000000_00000000_00000000_00000000,
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0b00000000_00001000_00000101_00000000_00000000_00000000_00000000_00000000,
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0b00000000_00010001_00001010_00000000_00000000_00000000_00000000_00000000,
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0b00000000_00100010_00010100_00000000_00000000_00000000_00000000_00000000,
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0b00000000_01000100_00101000_00000000_00000000_00000000_00000000_00000000,
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0b00000000_10001000_01010000_00000000_00000000_00000000_00000000_00000000,
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0b00000000_00010000_10100000_00000000_00000000_00000000_00000000_00000000,
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0b00000000_00100000_01000000_00000000_00000000_00000000_00000000_00000000,
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];
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/// Board representation with color/piece bitboards.
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#[derive(Clone, PartialEq)]
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pub struct Board {
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@ -418,30 +220,31 @@ impl Board {
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/// Get combined white/black pieces bitboard.
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#[inline]
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pub fn combined(&self) -> Bitboard {
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pub const fn combined(&self) -> Bitboard {
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self.colors[WHITE] | self.colors[BLACK]
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}
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/// Get the bitboard of a color.
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#[inline]
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pub fn by_color(&self, color: Color) -> Bitboard {
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pub const fn by_color(&self, color: Color) -> Bitboard {
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self.colors[color]
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}
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||||
/// Get the bitboard of a piece type.
|
||||
#[inline]
|
||||
pub fn by_piece(&self, piece: Piece) -> Bitboard {
|
||||
pub const fn by_piece(&self, piece: Piece) -> Bitboard {
|
||||
self.pieces[piece]
|
||||
}
|
||||
|
||||
/// Get the bitboard of a piece type for this color.
|
||||
#[inline]
|
||||
pub fn by_color_and_piece(&self, color: Color, piece: Piece) -> Bitboard {
|
||||
pub const fn by_color_and_piece(&self, color: Color, piece: Piece) -> Bitboard {
|
||||
self.by_color(color) & self.by_piece(piece)
|
||||
}
|
||||
|
||||
/// True if this square is empty.
|
||||
pub fn is_empty(&self, square: Square) -> bool {
|
||||
#[inline]
|
||||
pub const fn is_empty(&self, square: Square) -> bool {
|
||||
self.combined() & bit_pos(square) == 0
|
||||
}
|
||||
|
||||
|
@ -466,25 +269,35 @@ impl Board {
|
|||
}
|
||||
|
||||
/// Set a new value for the square at this position.
|
||||
///
|
||||
/// Clear opposite color bit, but not the previous piece bit.
|
||||
#[inline]
|
||||
pub fn set_square(&mut self, square: Square, color: Color, piece: Piece) {
|
||||
self.colors[color] |= bit_pos(square);
|
||||
self.colors[opposite(color)] &= !bit_pos(square);
|
||||
self.pieces[piece] |= bit_pos(square);
|
||||
let bp = bit_pos(square);
|
||||
self.colors[color] |= bp;
|
||||
self.colors[opposite(color)] &= !bp;
|
||||
self.pieces[piece] |= bp;
|
||||
}
|
||||
|
||||
/// Set the square empty at this position.
|
||||
///
|
||||
/// Clear both color and piece bitboards.
|
||||
#[inline]
|
||||
pub fn clear_square(&mut self, square: Square) {
|
||||
for color in 0..NUM_COLORS { self.colors[color] &= !bit_pos(square); }
|
||||
for piece in 0..NUM_PIECES { self.pieces[piece] &= !bit_pos(square); }
|
||||
pub fn clear_square(&mut self, square: Square, color: Color, piece: Piece) {
|
||||
let bp = bit_pos(square);
|
||||
self.colors[color] &= !bp;
|
||||
self.pieces[piece] &= !bp;
|
||||
}
|
||||
|
||||
/// Move a piece from a position to another, clearing initial position.
|
||||
#[inline]
|
||||
/// Move a piece from a square to another, clearing initial square.
|
||||
pub fn move_square(&mut self, source: Square, dest: Square) {
|
||||
self.set_square(dest, self.get_color_on(source), self.get_piece_on(source));
|
||||
self.clear_square(source);
|
||||
let (source_color, source_piece) = (self.get_color_on(source), self.get_piece_on(source));
|
||||
self.clear_square(source, source_color, source_piece);
|
||||
if !self.is_empty(dest) {
|
||||
let (dest_color, dest_piece) = (self.get_color_on(dest), self.get_piece_on(dest));
|
||||
self.clear_square(dest, dest_color, dest_piece);
|
||||
}
|
||||
self.set_square(dest, source_color, source_piece);
|
||||
}
|
||||
|
||||
/// Find position of this king.
|
||||
|
@ -498,20 +311,50 @@ impl Board {
|
|||
None
|
||||
}
|
||||
|
||||
/// Get pawn progress: only forward moves.
|
||||
pub fn get_pawn_progresses(&self, square: Square, color: Color) -> Bitboard {
|
||||
let mut progress_bb = PAWN_PROGRESSES[color][square as usize] & !self.combined();
|
||||
// Check that we do not jump over a piece when on a starting position.
|
||||
if color == WHITE && sq_rank(square) == RANK_2 {
|
||||
if self.combined() & bit_pos(sq(sq_file(square), sq_rank(square) + 1)) != 0 {
|
||||
progress_bb &= !bit_pos(sq(sq_file(square), sq_rank(square) + 2));
|
||||
}
|
||||
}
|
||||
else if color == BLACK && sq_rank(square) == RANK_7 {
|
||||
if self.combined() & bit_pos(sq(sq_file(square), sq_rank(square) - 1)) != 0 {
|
||||
progress_bb &= !bit_pos(sq(sq_file(square), sq_rank(square) - 2));
|
||||
}
|
||||
}
|
||||
progress_bb
|
||||
}
|
||||
|
||||
/// Get pawn captures: only moves capturing enemy pieces.
|
||||
pub const fn get_pawn_captures(&self, square: Square, color: Color) -> Bitboard {
|
||||
PAWN_CAPTURES[color][square as usize] & self.by_color(opposite(color))
|
||||
}
|
||||
|
||||
/// Get bishop rays: moves and captures bitboard.
|
||||
pub fn get_bishop_rays(&self, square: Square, color: Color) -> Bitboard {
|
||||
self.get_blockable_rays(square, color, &[(1, 1), (1, -1), (-1, -1), (-1, 1)])
|
||||
}
|
||||
|
||||
/// Get rook rays: moves and captures bitboard.
|
||||
pub fn get_rook_rays(&self, square: Square, color: Color) -> Bitboard {
|
||||
self.get_blockable_rays(square, color, &[(1, 0), (0, 1), (-1, 0), (0, -1)])
|
||||
}
|
||||
|
||||
/// Get queen rays: moves and captures bitboard.
|
||||
pub fn get_queen_rays(&self, square: Square, color: Color) -> Bitboard {
|
||||
self.get_blockable_rays(
|
||||
square, color, &[(1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1), (0, -1), (1, -1)]
|
||||
)
|
||||
}
|
||||
|
||||
/// Get rays for piece that can move how far they want.
|
||||
///
|
||||
/// Used for bishops, rooks and queens. A ray bitboard is the
|
||||
/// combination of squares either empty or occupied by an enemy
|
||||
/// piece they can reach.
|
||||
fn get_blockable_rays(&self,
|
||||
square: Square,
|
||||
color: Color,
|
||||
|
@ -542,16 +385,24 @@ impl Board {
|
|||
rays_bb
|
||||
}
|
||||
|
||||
/// Get knight rays: moves and captures bitboard.
|
||||
pub fn get_knight_rays(&self, square: Square, color: Color) -> Bitboard {
|
||||
KNIGHT_RAYS[square as usize] & !self.by_color(color)
|
||||
}
|
||||
|
||||
/// Get king rays: moves and captures bitboard.
|
||||
pub fn get_king_rays(&self, square: Square, color: Color) -> Bitboard {
|
||||
KING_RAYS[square as usize] & !self.by_color(color)
|
||||
}
|
||||
|
||||
/// Debug only: write a text view of the board to stderr.
|
||||
#[allow(dead_code)] // For tests only.
|
||||
pub(crate) fn draw(&self) {
|
||||
self.draw_to(&mut std::io::stderr());
|
||||
}
|
||||
|
||||
/// Debug only: write a text view of the board.
|
||||
pub(crate) fn draw(&self, f: &mut dyn std::io::Write) {
|
||||
pub(crate) fn draw_to(&self, f: &mut dyn std::io::Write) {
|
||||
let cbb = self.combined();
|
||||
for rank in (0..8).rev() {
|
||||
let mut rank_str = String::with_capacity(8);
|
||||
|
@ -699,6 +550,59 @@ mod tests {
|
|||
assert_eq!(b.find_king(BLACK), Some(E8));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_get_pawn_progresses() {
|
||||
let mut b = Board::new_empty();
|
||||
|
||||
// Check for simple or double move for white and black.
|
||||
b.set_square(A2, WHITE, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_progresses(A2, WHITE)), 2);
|
||||
b.set_square(B2, WHITE, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_progresses(B2, WHITE)), 2);
|
||||
b.set_square(B3, WHITE, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_progresses(B3, WHITE)), 1);
|
||||
assert!(b.get_pawn_progresses(B3, WHITE) & bit_pos(B4) != 0);
|
||||
b.set_square(H7, WHITE, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_progresses(H7, WHITE)), 1);
|
||||
b.set_square(A7, BLACK, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_progresses(A7, BLACK)), 2);
|
||||
assert!(b.get_pawn_progresses(A7, BLACK) & bit_pos(A6) != 0);
|
||||
assert!(b.get_pawn_progresses(A7, BLACK) & bit_pos(A5) != 0);
|
||||
|
||||
// Check that a starting pawn cannot jump over another piece.
|
||||
// Here, b2 is still blocked by another pawn on b3.
|
||||
assert_eq!(count_bits(b.get_pawn_progresses(B2, WHITE)), 0);
|
||||
// Move the blocking pawn to b4: one move is freed.
|
||||
b.move_square(B3, B4);
|
||||
let progress_bb = b.get_pawn_progresses(B2, WHITE);
|
||||
assert_eq!(count_bits(progress_bb), 1);
|
||||
assert!(progress_bb & bit_pos(B3) != 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_get_pawn_captures() {
|
||||
let mut b = Board::new_empty();
|
||||
|
||||
// No capture by default.
|
||||
b.set_square(A2, WHITE, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_captures(A2, WHITE)), 0);
|
||||
// Can't capture forward.
|
||||
b.set_square(A3, BLACK, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_captures(A2, WHITE)), 0);
|
||||
// Can't capture a frendly piece.
|
||||
b.set_square(B3, WHITE, KNIGHT);
|
||||
assert_eq!(count_bits(b.get_pawn_captures(A2, WHITE)), 0);
|
||||
// Capture that pawn...
|
||||
b.set_square(B3, BLACK, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_captures(A2, WHITE)), 1);
|
||||
// But it can capture you back!
|
||||
assert_eq!(count_bits(b.get_pawn_captures(B3, BLACK)), 1);
|
||||
// This one can capture both b3 and d3 black pawns.
|
||||
b.set_square(C2, WHITE, PAWN);
|
||||
b.set_square(D3, BLACK, PAWN);
|
||||
assert_eq!(count_bits(b.get_pawn_captures(C2, WHITE)), 2);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_get_bishop_rays() {
|
||||
let mut b = Board::new_empty();
|
||||
|
|
|
@ -62,6 +62,8 @@ pub enum Cmd {
|
|||
WorkerInfo(Vec<analysis::AnalysisInfo>),
|
||||
/// Send best move found by analysis worker.
|
||||
WorkerBestMove(Option<Move>),
|
||||
/// Draw board in logs.
|
||||
DrawBoard,
|
||||
|
||||
// Commands that can be sent by the engine.
|
||||
|
||||
|
@ -124,6 +126,13 @@ impl Engine {
|
|||
Cmd::Log(s) => self.reply(Cmd::Log(s.to_string())),
|
||||
Cmd::WorkerInfo(infos) => self.reply(Cmd::Info(infos.to_vec())),
|
||||
Cmd::WorkerBestMove(m) => self.reply(Cmd::BestMove(m.clone())),
|
||||
// Other commands.
|
||||
Cmd::DrawBoard => {
|
||||
let mut s = vec!();
|
||||
self.node.board.draw_to(&mut s);
|
||||
let s = format!("Current board:\n{}", String::from_utf8_lossy(&s));
|
||||
self.reply(Cmd::Log(s));
|
||||
}
|
||||
_ => eprintln!("Not an engine input command: {:?}", cmd),
|
||||
}
|
||||
}
|
||||
|
|
|
@ -7,6 +7,7 @@ pub mod engine;
|
|||
pub mod fen;
|
||||
pub mod movement;
|
||||
pub mod node;
|
||||
pub mod precomputed;
|
||||
pub mod rules;
|
||||
pub mod stats;
|
||||
pub mod uci;
|
||||
|
|
|
@ -167,16 +167,16 @@ mod tests {
|
|||
assert_eq!(gs.castling, CASTLING_MASK);
|
||||
|
||||
// On a starting board, start by making place for all castles.
|
||||
b.clear_square(B1);
|
||||
b.clear_square(C1);
|
||||
b.clear_square(D1);
|
||||
b.clear_square(F1);
|
||||
b.clear_square(G1);
|
||||
b.clear_square(B8);
|
||||
b.clear_square(C8);
|
||||
b.clear_square(D8);
|
||||
b.clear_square(F8);
|
||||
b.clear_square(G8);
|
||||
b.clear_square(B1, WHITE, KNIGHT);
|
||||
b.clear_square(C1, WHITE, BISHOP);
|
||||
b.clear_square(D1, WHITE, QUEEN);
|
||||
b.clear_square(F1, WHITE, BISHOP);
|
||||
b.clear_square(G1, WHITE, KNIGHT);
|
||||
b.clear_square(B8, BLACK, KNIGHT);
|
||||
b.clear_square(C8, BLACK, BISHOP);
|
||||
b.clear_square(D8, BLACK, QUEEN);
|
||||
b.clear_square(F8, BLACK, BISHOP);
|
||||
b.clear_square(G8, BLACK, KNIGHT);
|
||||
// White queen-side castling.
|
||||
Move::new(E1, C1).apply_to(&mut b, &mut gs);
|
||||
assert_eq!(b.get_color_on(C1), WHITE);
|
||||
|
|
|
@ -52,7 +52,7 @@ impl fmt::Debug for Node {
|
|||
impl fmt::Display for Node {
|
||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
let mut s = vec!();
|
||||
self.board.draw(&mut s);
|
||||
self.board.draw_to(&mut s);
|
||||
let board_drawing = String::from_utf8_lossy(&s).to_string();
|
||||
write!(f, "* Board:\n{}\nGame state: {}", board_drawing, self.game_state)
|
||||
}
|
||||
|
|
482
src/precomputed.rs
Normal file
482
src/precomputed.rs
Normal file
|
@ -0,0 +1,482 @@
|
|||
//! Ugly module with all kind of precomputed stuff.
|
||||
|
||||
use crate::board::{Square, Bitboard};
|
||||
|
||||
// Generated by gen_squares.py.
|
||||
pub const A1: Square = 0;
|
||||
pub const A2: Square = 1;
|
||||
pub const A3: Square = 2;
|
||||
pub const A4: Square = 3;
|
||||
pub const A5: Square = 4;
|
||||
pub const A6: Square = 5;
|
||||
pub const A7: Square = 6;
|
||||
pub const A8: Square = 7;
|
||||
pub const B1: Square = 8;
|
||||
pub const B2: Square = 9;
|
||||
pub const B3: Square = 10;
|
||||
pub const B4: Square = 11;
|
||||
pub const B5: Square = 12;
|
||||
pub const B6: Square = 13;
|
||||
pub const B7: Square = 14;
|
||||
pub const B8: Square = 15;
|
||||
pub const C1: Square = 16;
|
||||
pub const C2: Square = 17;
|
||||
pub const C3: Square = 18;
|
||||
pub const C4: Square = 19;
|
||||
pub const C5: Square = 20;
|
||||
pub const C6: Square = 21;
|
||||
pub const C7: Square = 22;
|
||||
pub const C8: Square = 23;
|
||||
pub const D1: Square = 24;
|
||||
pub const D2: Square = 25;
|
||||
pub const D3: Square = 26;
|
||||
pub const D4: Square = 27;
|
||||
pub const D5: Square = 28;
|
||||
pub const D6: Square = 29;
|
||||
pub const D7: Square = 30;
|
||||
pub const D8: Square = 31;
|
||||
pub const E1: Square = 32;
|
||||
pub const E2: Square = 33;
|
||||
pub const E3: Square = 34;
|
||||
pub const E4: Square = 35;
|
||||
pub const E5: Square = 36;
|
||||
pub const E6: Square = 37;
|
||||
pub const E7: Square = 38;
|
||||
pub const E8: Square = 39;
|
||||
pub const F1: Square = 40;
|
||||
pub const F2: Square = 41;
|
||||
pub const F3: Square = 42;
|
||||
pub const F4: Square = 43;
|
||||
pub const F5: Square = 44;
|
||||
pub const F6: Square = 45;
|
||||
pub const F7: Square = 46;
|
||||
pub const F8: Square = 47;
|
||||
pub const G1: Square = 48;
|
||||
pub const G2: Square = 49;
|
||||
pub const G3: Square = 50;
|
||||
pub const G4: Square = 51;
|
||||
pub const G5: Square = 52;
|
||||
pub const G6: Square = 53;
|
||||
pub const G7: Square = 54;
|
||||
pub const G8: Square = 55;
|
||||
pub const H1: Square = 56;
|
||||
pub const H2: Square = 57;
|
||||
pub const H3: Square = 58;
|
||||
pub const H4: Square = 59;
|
||||
pub const H5: Square = 60;
|
||||
pub const H6: Square = 61;
|
||||
pub const H7: Square = 62;
|
||||
pub const H8: Square = 63;
|
||||
pub const NUM_SQUARES: Square = 64;
|
||||
|
||||
// Generated by gen_pawn_progresses.py.
|
||||
/// Pre-computed pawn progress (for white and black).
|
||||
pub const PAWN_PROGRESSES: [[Bitboard; 64]; 2] = [
|
||||
[
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000001100,
|
||||
0b0000000000000000000000000000000000000000000000000000000000001000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000010000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000100000,
|
||||
0b0000000000000000000000000000000000000000000000000000000001000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000010000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000110000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000100000000000,
|
||||
0b0000000000000000000000000000000000000000000000000001000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000010000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000100000000000000,
|
||||
0b0000000000000000000000000000000000000000000000001000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000011000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000010000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000100000000000000000000,
|
||||
0b0000000000000000000000000000000000000000001000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000010000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000100000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000001100000000000000000000000000,
|
||||
0b0000000000000000000000000000000000001000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000010000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000100000000000000000000000000000,
|
||||
0b0000000000000000000000000000000001000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000010000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000110000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000100000000000000000000000000000000000,
|
||||
0b0000000000000000000000000001000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000010000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000100000000000000000000000000000000000000,
|
||||
0b0000000000000000000000001000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000011000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000010000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000100000000000000000000000000000000000000000000,
|
||||
0b0000000000000000001000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000010000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000100000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000001100000000000000000000000000000000000000000000000000,
|
||||
0b0000000000001000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000010000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000100000000000000000000000000000000000000000000000000000,
|
||||
0b0000000001000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000010000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000110000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000100000000000000000000000000000000000000000000000000000000000,
|
||||
0b0001000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0010000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0100000000000000000000000000000000000000000000000000000000000000,
|
||||
0b1000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
],
|
||||
[
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000001,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000010,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000100,
|
||||
0b0000000000000000000000000000000000000000000000000000000000001000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000010000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000110000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000100000000,
|
||||
0b0000000000000000000000000000000000000000000000000000001000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000010000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000100000000000,
|
||||
0b0000000000000000000000000000000000000000000000000001000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000011000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000010000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000100000000000000000,
|
||||
0b0000000000000000000000000000000000000000000001000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000010000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000100000000000000000000,
|
||||
0b0000000000000000000000000000000000000000001100000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000001000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000010000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000100000000000000000000000000,
|
||||
0b0000000000000000000000000000000000001000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000010000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000110000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000100000000000000000000000000000000,
|
||||
0b0000000000000000000000000000001000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000010000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000100000000000000000000000000000000000,
|
||||
0b0000000000000000000000000001000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000011000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000010000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000100000000000000000000000000000000000000000,
|
||||
0b0000000000000000000001000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000010000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000100000000000000000000000000000000000000000000,
|
||||
0b0000000000000000001100000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000001000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000010000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000100000000000000000000000000000000000000000000000000,
|
||||
0b0000000000001000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000010000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000110000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000100000000000000000000000000000000000000000000000000000000,
|
||||
0b0000001000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000010000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000100000000000000000000000000000000000000000000000000000000000,
|
||||
0b0001000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0011000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
],
|
||||
];
|
||||
|
||||
// Generated by gen_pawn_captures.py.
|
||||
/// Pre-computed pawn captures (for white and black).
|
||||
pub const PAWN_CAPTURES: [[Bitboard; 64]; 2] = [
|
||||
[
|
||||
0b0000000000000000000000000000000000000000000000000000001000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000010000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000100000000000,
|
||||
0b0000000000000000000000000000000000000000000000000001000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000010000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000100000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000100000000000000010,
|
||||
0b0000000000000000000000000000000000000000000001000000000000000100,
|
||||
0b0000000000000000000000000000000000000000000010000000000000001000,
|
||||
0b0000000000000000000000000000000000000000000100000000000000010000,
|
||||
0b0000000000000000000000000000000000000000001000000000000000100000,
|
||||
0b0000000000000000000000000000000000000000010000000000000001000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000010000000000000001000000000,
|
||||
0b0000000000000000000000000000000000000100000000000000010000000000,
|
||||
0b0000000000000000000000000000000000001000000000000000100000000000,
|
||||
0b0000000000000000000000000000000000010000000000000001000000000000,
|
||||
0b0000000000000000000000000000000000100000000000000010000000000000,
|
||||
0b0000000000000000000000000000000001000000000000000100000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000001000000000000000100000000000000000,
|
||||
0b0000000000000000000000000000010000000000000001000000000000000000,
|
||||
0b0000000000000000000000000000100000000000000010000000000000000000,
|
||||
0b0000000000000000000000000001000000000000000100000000000000000000,
|
||||
0b0000000000000000000000000010000000000000001000000000000000000000,
|
||||
0b0000000000000000000000000100000000000000010000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000100000000000000010000000000000000000000000,
|
||||
0b0000000000000000000001000000000000000100000000000000000000000000,
|
||||
0b0000000000000000000010000000000000001000000000000000000000000000,
|
||||
0b0000000000000000000100000000000000010000000000000000000000000000,
|
||||
0b0000000000000000001000000000000000100000000000000000000000000000,
|
||||
0b0000000000000000010000000000000001000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000010000000000000001000000000000000000000000000000000,
|
||||
0b0000000000000100000000000000010000000000000000000000000000000000,
|
||||
0b0000000000001000000000000000100000000000000000000000000000000000,
|
||||
0b0000000000010000000000000001000000000000000000000000000000000000,
|
||||
0b0000000000100000000000000010000000000000000000000000000000000000,
|
||||
0b0000000001000000000000000100000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000001000000000000000100000000000000000000000000000000000000000,
|
||||
0b0000010000000000000001000000000000000000000000000000000000000000,
|
||||
0b0000100000000000000010000000000000000000000000000000000000000000,
|
||||
0b0001000000000000000100000000000000000000000000000000000000000000,
|
||||
0b0010000000000000001000000000000000000000000000000000000000000000,
|
||||
0b0100000000000000010000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000010000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000100000000000000000000000000000000000000000000000000,
|
||||
0b0000000000001000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000010000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000100000000000000000000000000000000000000000000000000000,
|
||||
0b0000000001000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
],
|
||||
[
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000001000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000010000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000100000000000,
|
||||
0b0000000000000000000000000000000000000000000000000001000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000010000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000100000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000100000000000000010,
|
||||
0b0000000000000000000000000000000000000000000001000000000000000100,
|
||||
0b0000000000000000000000000000000000000000000010000000000000001000,
|
||||
0b0000000000000000000000000000000000000000000100000000000000010000,
|
||||
0b0000000000000000000000000000000000000000001000000000000000100000,
|
||||
0b0000000000000000000000000000000000000000010000000000000001000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000010000000000000001000000000,
|
||||
0b0000000000000000000000000000000000000100000000000000010000000000,
|
||||
0b0000000000000000000000000000000000001000000000000000100000000000,
|
||||
0b0000000000000000000000000000000000010000000000000001000000000000,
|
||||
0b0000000000000000000000000000000000100000000000000010000000000000,
|
||||
0b0000000000000000000000000000000001000000000000000100000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000001000000000000000100000000000000000,
|
||||
0b0000000000000000000000000000010000000000000001000000000000000000,
|
||||
0b0000000000000000000000000000100000000000000010000000000000000000,
|
||||
0b0000000000000000000000000001000000000000000100000000000000000000,
|
||||
0b0000000000000000000000000010000000000000001000000000000000000000,
|
||||
0b0000000000000000000000000100000000000000010000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000100000000000000010000000000000000000000000,
|
||||
0b0000000000000000000001000000000000000100000000000000000000000000,
|
||||
0b0000000000000000000010000000000000001000000000000000000000000000,
|
||||
0b0000000000000000000100000000000000010000000000000000000000000000,
|
||||
0b0000000000000000001000000000000000100000000000000000000000000000,
|
||||
0b0000000000000000010000000000000001000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000010000000000000001000000000000000000000000000000000,
|
||||
0b0000000000000100000000000000010000000000000000000000000000000000,
|
||||
0b0000000000001000000000000000100000000000000000000000000000000000,
|
||||
0b0000000000010000000000000001000000000000000000000000000000000000,
|
||||
0b0000000000100000000000000010000000000000000000000000000000000000,
|
||||
0b0000000001000000000000000100000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000001000000000000000100000000000000000000000000000000000000000,
|
||||
0b0000010000000000000001000000000000000000000000000000000000000000,
|
||||
0b0000100000000000000010000000000000000000000000000000000000000000,
|
||||
0b0001000000000000000100000000000000000000000000000000000000000000,
|
||||
0b0010000000000000001000000000000000000000000000000000000000000000,
|
||||
0b0100000000000000010000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000010000000000000000000000000000000000000000000000000,
|
||||
0b0000000000000100000000000000000000000000000000000000000000000000,
|
||||
0b0000000000001000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000010000000000000000000000000000000000000000000000000000,
|
||||
0b0000000000100000000000000000000000000000000000000000000000000000,
|
||||
0b0000000001000000000000000000000000000000000000000000000000000000,
|
||||
],
|
||||
];
|
||||
|
||||
// Generated by gen_king_rays.py.
|
||||
/// Pre-computed king rays.
|
||||
pub const KING_RAYS: [Bitboard; 64] = [
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_00000011_00000010,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_00000111_00000101,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_00001110_00001010,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_00011100_00010100,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_00111000_00101000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_01110000_01010000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_11100000_10100000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000000_11000000_01000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000011_00000010_00000011,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000111_00000101_00000111,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00001110_00001010_00001110,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00011100_00010100_00011100,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00111000_00101000_00111000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_01110000_01010000_01110000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_11100000_10100000_11100000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_11000000_01000000_11000000,
|
||||
0b00000000_00000000_00000000_00000000_00000011_00000010_00000011_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000111_00000101_00000111_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00001110_00001010_00001110_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00011100_00010100_00011100_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00111000_00101000_00111000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_01110000_01010000_01110000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_11100000_10100000_11100000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_11000000_01000000_11000000_00000000,
|
||||
0b00000000_00000000_00000000_00000011_00000010_00000011_00000000_00000000,
|
||||
0b00000000_00000000_00000000_00000111_00000101_00000111_00000000_00000000,
|
||||
0b00000000_00000000_00000000_00001110_00001010_00001110_00000000_00000000,
|
||||
0b00000000_00000000_00000000_00011100_00010100_00011100_00000000_00000000,
|
||||
0b00000000_00000000_00000000_00111000_00101000_00111000_00000000_00000000,
|
||||
0b00000000_00000000_00000000_01110000_01010000_01110000_00000000_00000000,
|
||||
0b00000000_00000000_00000000_11100000_10100000_11100000_00000000_00000000,
|
||||
0b00000000_00000000_00000000_11000000_01000000_11000000_00000000_00000000,
|
||||
0b00000000_00000000_00000011_00000010_00000011_00000000_00000000_00000000,
|
||||
0b00000000_00000000_00000111_00000101_00000111_00000000_00000000_00000000,
|
||||
0b00000000_00000000_00001110_00001010_00001110_00000000_00000000_00000000,
|
||||
0b00000000_00000000_00011100_00010100_00011100_00000000_00000000_00000000,
|
||||
0b00000000_00000000_00111000_00101000_00111000_00000000_00000000_00000000,
|
||||
0b00000000_00000000_01110000_01010000_01110000_00000000_00000000_00000000,
|
||||
0b00000000_00000000_11100000_10100000_11100000_00000000_00000000_00000000,
|
||||
0b00000000_00000000_11000000_01000000_11000000_00000000_00000000_00000000,
|
||||
0b00000000_00000011_00000010_00000011_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00000111_00000101_00000111_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00001110_00001010_00001110_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00011100_00010100_00011100_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00111000_00101000_00111000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_01110000_01010000_01110000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_11100000_10100000_11100000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_11000000_01000000_11000000_00000000_00000000_00000000_00000000,
|
||||
0b00000011_00000010_00000011_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000111_00000101_00000111_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00001110_00001010_00001110_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00011100_00010100_00011100_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00111000_00101000_00111000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b01110000_01010000_01110000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b11100000_10100000_11100000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b11000000_01000000_11000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000010_00000011_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000101_00000111_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00001010_00001110_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00010100_00011100_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00101000_00111000_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b01010000_01110000_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b10100000_11100000_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b01000000_11000000_00000000_00000000_00000000_00000000_00000000_00000000,
|
||||
];
|
||||
|
||||
// Generated by gen_knight_rays.py.
|
||||
/// Pre-computed knight rays.
|
||||
pub const KNIGHT_RAYS: [Bitboard; 64] = [
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000010_00000100_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00000101_00001000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00001010_00010001_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00010100_00100010_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_00101000_01000100_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_01010000_10001000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_10100000_00010000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000000_01000000_00100000_00000000,
|
||||
0b00000000_00000000_00000000_00000000_00000010_00000100_00000000_00000100,
|
||||
0b00000000_00000000_00000000_00000000_00000101_00001000_00000000_00001000,
|
||||
0b00000000_00000000_00000000_00000000_00001010_00010001_00000000_00010001,
|
||||
0b00000000_00000000_00000000_00000000_00010100_00100010_00000000_00100010,
|
||||
0b00000000_00000000_00000000_00000000_00101000_01000100_00000000_01000100,
|
||||
0b00000000_00000000_00000000_00000000_01010000_10001000_00000000_10001000,
|
||||
0b00000000_00000000_00000000_00000000_10100000_00010000_00000000_00010000,
|
||||
0b00000000_00000000_00000000_00000000_01000000_00100000_00000000_00100000,
|
||||
0b00000000_00000000_00000000_00000010_00000100_00000000_00000100_00000010,
|
||||
0b00000000_00000000_00000000_00000101_00001000_00000000_00001000_00000101,
|
||||
0b00000000_00000000_00000000_00001010_00010001_00000000_00010001_00001010,
|
||||
0b00000000_00000000_00000000_00010100_00100010_00000000_00100010_00010100,
|
||||
0b00000000_00000000_00000000_00101000_01000100_00000000_01000100_00101000,
|
||||
0b00000000_00000000_00000000_01010000_10001000_00000000_10001000_01010000,
|
||||
0b00000000_00000000_00000000_10100000_00010000_00000000_00010000_10100000,
|
||||
0b00000000_00000000_00000000_01000000_00100000_00000000_00100000_01000000,
|
||||
0b00000000_00000000_00000010_00000100_00000000_00000100_00000010_00000000,
|
||||
0b00000000_00000000_00000101_00001000_00000000_00001000_00000101_00000000,
|
||||
0b00000000_00000000_00001010_00010001_00000000_00010001_00001010_00000000,
|
||||
0b00000000_00000000_00010100_00100010_00000000_00100010_00010100_00000000,
|
||||
0b00000000_00000000_00101000_01000100_00000000_01000100_00101000_00000000,
|
||||
0b00000000_00000000_01010000_10001000_00000000_10001000_01010000_00000000,
|
||||
0b00000000_00000000_10100000_00010000_00000000_00010000_10100000_00000000,
|
||||
0b00000000_00000000_01000000_00100000_00000000_00100000_01000000_00000000,
|
||||
0b00000000_00000010_00000100_00000000_00000100_00000010_00000000_00000000,
|
||||
0b00000000_00000101_00001000_00000000_00001000_00000101_00000000_00000000,
|
||||
0b00000000_00001010_00010001_00000000_00010001_00001010_00000000_00000000,
|
||||
0b00000000_00010100_00100010_00000000_00100010_00010100_00000000_00000000,
|
||||
0b00000000_00101000_01000100_00000000_01000100_00101000_00000000_00000000,
|
||||
0b00000000_01010000_10001000_00000000_10001000_01010000_00000000_00000000,
|
||||
0b00000000_10100000_00010000_00000000_00010000_10100000_00000000_00000000,
|
||||
0b00000000_01000000_00100000_00000000_00100000_01000000_00000000_00000000,
|
||||
0b00000010_00000100_00000000_00000100_00000010_00000000_00000000_00000000,
|
||||
0b00000101_00001000_00000000_00001000_00000101_00000000_00000000_00000000,
|
||||
0b00001010_00010001_00000000_00010001_00001010_00000000_00000000_00000000,
|
||||
0b00010100_00100010_00000000_00100010_00010100_00000000_00000000_00000000,
|
||||
0b00101000_01000100_00000000_01000100_00101000_00000000_00000000_00000000,
|
||||
0b01010000_10001000_00000000_10001000_01010000_00000000_00000000_00000000,
|
||||
0b10100000_00010000_00000000_00010000_10100000_00000000_00000000_00000000,
|
||||
0b01000000_00100000_00000000_00100000_01000000_00000000_00000000_00000000,
|
||||
0b00000100_00000000_00000100_00000010_00000000_00000000_00000000_00000000,
|
||||
0b00001000_00000000_00001000_00000101_00000000_00000000_00000000_00000000,
|
||||
0b00010001_00000000_00010001_00001010_00000000_00000000_00000000_00000000,
|
||||
0b00100010_00000000_00100010_00010100_00000000_00000000_00000000_00000000,
|
||||
0b01000100_00000000_01000100_00101000_00000000_00000000_00000000_00000000,
|
||||
0b10001000_00000000_10001000_01010000_00000000_00000000_00000000_00000000,
|
||||
0b00010000_00000000_00010000_10100000_00000000_00000000_00000000_00000000,
|
||||
0b00100000_00000000_00100000_01000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00000100_00000010_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00001000_00000101_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00010001_00001010_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00100010_00010100_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_01000100_00101000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_10001000_01010000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00010000_10100000_00000000_00000000_00000000_00000000_00000000,
|
||||
0b00000000_00100000_01000000_00000000_00000000_00000000_00000000_00000000,
|
||||
];
|
137
src/rules.rs
137
src/rules.rs
|
@ -105,6 +105,72 @@ fn get_piece_moves(
|
|||
}
|
||||
}
|
||||
|
||||
// fn get_pawn_moves(
|
||||
// board: &Board,
|
||||
// game_state: &GameState,
|
||||
// square: Square,
|
||||
// color: Color,
|
||||
// pseudo_legal: bool,
|
||||
// ) -> Vec<Move> {
|
||||
// let (f, r) = (sq_file(square), sq_rank(square));
|
||||
// let mut moves = vec!();
|
||||
// // Direction: positive for white, negative for black.
|
||||
// let dir = if color == WHITE { 1 } else { -1 };
|
||||
// // Check 1 or 2 square forward.
|
||||
// let move_len = if (color == WHITE && r == 1) || (color == BLACK && r == 6) { 2 } else { 1 };
|
||||
// for i in 1..=move_len {
|
||||
// let forward_r = r + dir * i;
|
||||
// if dir > 0 && forward_r > POS_MAX {
|
||||
// return moves
|
||||
// }
|
||||
// if dir < 0 && forward_r < POS_MIN {
|
||||
// return moves
|
||||
// }
|
||||
// let forward: Square = sq(f, forward_r);
|
||||
// // If forward square is empty (and we are not jumping over an occupied square), add it.
|
||||
// if board.is_empty(forward) && (i == 1 || board.is_empty(sq(f, forward_r - dir))) {
|
||||
// let mut m = Move::new(square, forward);
|
||||
// // Pawns that get to the opposite rank automatically promote as queens.
|
||||
// if (dir > 0 && forward_r == POS_MAX) || (dir < 0 && forward_r == POS_MIN) {
|
||||
// m.promotion = Some(QUEEN)
|
||||
// }
|
||||
// if pseudo_legal || !is_illegal(board, game_state, &m) {
|
||||
// moves.push(m);
|
||||
// }
|
||||
// }
|
||||
// // Check diagonals for pieces to attack.
|
||||
// if i == 1 {
|
||||
// // First diagonal.
|
||||
// if f - 1 >= POS_MIN {
|
||||
// let diag = sq(f - 1, forward_r);
|
||||
// if !board.is_empty(diag) {
|
||||
// let diag_color = board.get_color_on(diag);
|
||||
// if let Some(m) = get_capture_move(color, square, diag_color, diag, true) {
|
||||
// if pseudo_legal || !is_illegal(board, game_state, &m) {
|
||||
// moves.push(m);
|
||||
// }
|
||||
// }
|
||||
|
||||
// }
|
||||
// }
|
||||
// // Second diagonal.
|
||||
// if f + 1 <= POS_MAX {
|
||||
// let diag = sq(f + 1, forward_r);
|
||||
// if !board.is_empty(diag) {
|
||||
// let diag_color = board.get_color_on(diag);
|
||||
// if let Some(m) = get_capture_move(color, square, diag_color, diag, true) {
|
||||
// if pseudo_legal || !is_illegal(board, game_state, &m) {
|
||||
// moves.push(m);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// // TODO en passant
|
||||
// }
|
||||
// moves
|
||||
// }
|
||||
|
||||
fn get_pawn_moves(
|
||||
board: &Board,
|
||||
game_state: &GameState,
|
||||
|
@ -112,64 +178,17 @@ fn get_pawn_moves(
|
|||
color: Color,
|
||||
pseudo_legal: bool,
|
||||
) -> Vec<Move> {
|
||||
let (f, r) = (sq_file(square), sq_rank(square));
|
||||
let mut moves = vec!();
|
||||
// Direction: positive for white, negative for black.
|
||||
let dir = if color == WHITE { 1 } else { -1 };
|
||||
// Check 1 or 2 square forward.
|
||||
let move_len = if (color == WHITE && r == 1) || (color == BLACK && r == 6) { 2 } else { 1 };
|
||||
for i in 1..=move_len {
|
||||
let forward_r = r + dir * i;
|
||||
if dir > 0 && forward_r > POS_MAX {
|
||||
return moves
|
||||
}
|
||||
if dir < 0 && forward_r < POS_MIN {
|
||||
return moves
|
||||
}
|
||||
let forward: Square = sq(f, forward_r);
|
||||
// If forward square is empty (and we are not jumping over an occupied square), add it.
|
||||
if board.is_empty(forward) && (i == 1 || board.is_empty(sq(f, forward_r - dir))) {
|
||||
let mut m = Move::new(square, forward);
|
||||
// Pawns that get to the opposite rank automatically promote as queens.
|
||||
if (dir > 0 && forward_r == POS_MAX) || (dir < 0 && forward_r == POS_MIN) {
|
||||
m.promotion = Some(QUEEN)
|
||||
}
|
||||
if pseudo_legal || !is_illegal(board, game_state, &m) {
|
||||
moves.push(m);
|
||||
}
|
||||
}
|
||||
// Check diagonals for pieces to attack.
|
||||
if i == 1 {
|
||||
// First diagonal.
|
||||
if f - 1 >= POS_MIN {
|
||||
let diag = sq(f - 1, forward_r);
|
||||
if !board.is_empty(diag) {
|
||||
let diag_color = board.get_color_on(diag);
|
||||
if let Some(m) = get_capture_move(color, square, diag_color, diag, true) {
|
||||
if pseudo_legal || !is_illegal(board, game_state, &m) {
|
||||
moves.push(m);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
// Second diagonal.
|
||||
if f + 1 <= POS_MAX {
|
||||
let diag = sq(f + 1, forward_r);
|
||||
if !board.is_empty(diag) {
|
||||
let diag_color = board.get_color_on(diag);
|
||||
if let Some(m) = get_capture_move(color, square, diag_color, diag, true) {
|
||||
if pseudo_legal || !is_illegal(board, game_state, &m) {
|
||||
moves.push(m);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
get_moves_from_bb(
|
||||
board,
|
||||
game_state,
|
||||
board.get_pawn_progresses(square, color) | board.get_pawn_captures(square, color),
|
||||
square,
|
||||
color,
|
||||
PAWN,
|
||||
pseudo_legal
|
||||
)
|
||||
// TODO en passant
|
||||
}
|
||||
moves
|
||||
}
|
||||
|
||||
fn get_bishop_moves(
|
||||
board: &Board,
|
||||
|
@ -324,6 +343,10 @@ fn get_king_moves(
|
|||
}
|
||||
|
||||
/// Get moves from this ray bitboard.
|
||||
///
|
||||
/// Inspect all moves from the bitboard and produce a Move for each
|
||||
/// legal move, or all moves if `pseudo_legal` is true. Pawns that
|
||||
/// reach the last rank are promoted as queens.
|
||||
fn get_moves_from_bb(
|
||||
board: &Board,
|
||||
game_state: &GameState,
|
||||
|
@ -480,7 +503,7 @@ mod tests {
|
|||
let moves = get_piece_moves(&b, &gs, E2, WHITE, false);
|
||||
assert_eq!(moves.len(), 0);
|
||||
// 3. remove the e4 black pawn; the white pawn should not be able to jump above e3 pawn.
|
||||
b.clear_square(E4);
|
||||
b.clear_square(E4, BLACK, PAWN);
|
||||
let moves = get_piece_moves(&b, &gs, E2, WHITE, false);
|
||||
assert_eq!(moves.len(), 0);
|
||||
|
||||
|
|
|
@ -57,6 +57,10 @@ pub enum UciCmd {
|
|||
Position(Vec<PositionArgs>),
|
||||
Go(Vec<GoArgs>),
|
||||
Quit,
|
||||
|
||||
// Unofficial commands mostly for debugging.
|
||||
VatuDraw,
|
||||
|
||||
Unknown(String),
|
||||
}
|
||||
|
||||
|
@ -198,6 +202,9 @@ impl Uci {
|
|||
self.send_engine_command(engine::Cmd::Stop);
|
||||
},
|
||||
UciCmd::Quit => return false,
|
||||
UciCmd::VatuDraw => {
|
||||
self.send_engine_command(engine::Cmd::DrawBoard);
|
||||
}
|
||||
UciCmd::Unknown(c) => { self.log(format!("Unknown command: {}", c)); }
|
||||
}
|
||||
true
|
||||
|
@ -305,6 +312,7 @@ fn parse_command(s: &str) -> UciCmd {
|
|||
"position" => parse_position_command(&fields[1..]),
|
||||
"go" => parse_go_command(&fields[1..]),
|
||||
"quit" => UciCmd::Quit,
|
||||
"vatudraw" => UciCmd::VatuDraw,
|
||||
c => UciCmd::Unknown(c.to_string()),
|
||||
}
|
||||
}
|
||||
|
|
Reference in a new issue