[BitBoard] Implement bishopAttacks and queenAttacks

BitBoard.cpp

@@ -79,6 +79,25 @@ BitBoard BitBoard::bishopAttacks(BitBoard bishops, BitBoard empty) {
     return (result | diag1.northWest() | diag1.southEast() | diag2.northEast() | diag2.southWest()) & ~bishops;
 }
 
+BitBoard BitBoard::rookAttacks(BitBoard rooks, BitBoard empty) {
+    BitBoard result = 0;
+    BitBoard diag1 = rooks;
+    BitBoard diag2 = rooks;
+    empty ^= rooks;
+
+    for (int i = 0; i < 7; i++) {
+        result |= (diag1 | diag2);
+        diag1 = (diag1.north() | diag1.south()) & empty;
+        diag2 = (diag2.east() | diag2.west()) & empty;
+    }
+
+    return (result | diag1.north() | diag1.south() | diag2.east() | diag2.west()) & ~rooks;
+}
+
+BitBoard BitBoard::queenAttacks(BitBoard queens, BitBoard empty) {
+    return rookAttacks(queens, empty) | bishopAttacks(queens, empty);
+}
+
 BitBoard BitBoard::pawnNorthAttacks(BitBoard pawns, BitBoard targets) {
     return (pawns.northEast() | pawns.northWest()) & targets;
 }

BitBoard.hpp

@@ -107,6 +107,8 @@ public:
     BitBoard fileFill() const;
 
     static BitBoard bishopAttacks(BitBoard pos, BitBoard empty);
+    static BitBoard rookAttacks(BitBoard rooks, BitBoard empty);
+    static BitBoard queenAttacks(BitBoard queens, BitBoard empty);
     static BitBoard kingAttacks(BitBoard kings);
     static BitBoard castlingMoves(BitBoard kings, BitBoard rooks, BitBoard empty);