From 21d26902f068b87c6537e88fafda7bba34285e5d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Varga=20D=C3=A1vid=20Lajos?= Date: Thu, 20 Nov 2025 12:33:58 +0100 Subject: [PATCH] implemented general move generation methdod for kings --- engine/src/bitboard/movegen/kings.rs | 36 +++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) diff --git a/engine/src/bitboard/movegen/kings.rs b/engine/src/bitboard/movegen/kings.rs index 9148c04..101ca04 100644 --- a/engine/src/bitboard/movegen/kings.rs +++ b/engine/src/bitboard/movegen/kings.rs @@ -1 +1,35 @@ -use super::*; \ No newline at end of file +use super::*; + +impl Board { + + fn add_king_moves(&self, capture_buffer: &mut MoveBuffer, quiet_buffer: &mut MoveBuffer, move_mask: u64) { + let piece_index = 5 + self.side_to_move * 6; + let mut kings = self.bitboards[piece_index as usize]; + let empty = !self.occupancy[2]; + let opponents = self.occupancy[1 - self.side_to_move as usize]; + while kings != 0 { + let from_sq = pop_lsb(&mut kings); + let move_map = self.get_pseudo_king_moves(from_sq) & move_mask; + + let mut quiet_map = move_map & empty; + let mut capture_map = move_map & opponents; + + while quiet_map != 0 { + let to_sq = pop_lsb(&mut quiet_map); + quiet_buffer.add(BitMove::quiet( + from_sq as u8, + to_sq as u8, + None + )); + } + while capture_map != 0 { + let to_sq = pop_lsb(&mut capture_map); + capture_buffer.add(BitMove::capture( + from_sq as u8, + to_sq as u8, + None + )); + } + } + } +} \ No newline at end of file