fix: consider blocking pieces when double pushing

1 files changed, 7 insertions, 1 deletions

diff --git a/src/board.rs b/src/board.rs
index 54efab9..625711e 100644
--- a/src/board.rs
+++ b/src/board.rs
@@ -152,8 +152,14 @@ impl Board {
                         for target in serialize_bitboard(self.attacks.pawn[color as usize][source as usize] & opponent_occupancy) {
                             moves.push(Move { source, target });
                         };
+                    }
+                    for source in serialize_bitboard(*piece) {
                         for target in serialize_bitboard(self.attacks.pawn_pushes[color as usize][source as usize] & available_targets) {
-                            moves.push(Move { source, target });
+                            // Exclude double pushes in a monkey way
+                            // TODO: properly rewrite this storing a separate bitboard for double pushes
+                            if !((source as u8 / 8 == 1) && (target as u8 / 8 == 3) && (self.occupancy & (1 << (source as u8 + 8)) > 0)) {
+                                moves.push(Move { source, target });
+                            }
                         };
                     }
                 }