Luecx
diff --git a/‎src_files/attacks.cpp‎
Lines changed: 6 additions & 0 deletions b/‎src_files/attacks.cpp‎
Lines changed: 6 additions & 0 deletions
diff --git a/‎src_files/attacks.h‎
Lines changed: 3 additions & 0 deletions b/‎src_files/attacks.h‎
Lines changed: 3 additions & 0 deletions
diff --git a/‎src_files/bitboard.cpp‎
Lines changed: 12 additions & 2 deletions b/‎src_files/bitboard.cpp‎
Lines changed: 12 additions & 2 deletions
diff --git a/‎src_files/bitboard.h‎
Lines changed: 4 additions & 3 deletions b/‎src_files/bitboard.h‎
Lines changed: 4 additions & 3 deletions
@@ -27,6 +27,8 @@ using namespace bb;
 
 U64 attacks::ROOK_ATTACKS  [N_SQUARES][4096]{};
 U64 attacks::BISHOP_ATTACKS[N_SQUARES][ 512]{};
+U64 attacks::PAWN_ATTACKS  [N_SQUARES][N_COLORS]{};
+
 
 U64 populateMask(U64 mask, U64 index) {
     U64    res = 0;
@@ -73,6 +75,10 @@ void attacks::init() {
 #endif
             BISHOP_ATTACKS[n][index] = generateBishopAttacks(n, rel_occ);
         }
+        
+        // pawn attacks
+        PAWN_ATTACKS[n][WHITE] = shiftNorthWest(ONE << n) | shiftNorthEast(ONE << n);
+        PAWN_ATTACKS[n][BLACK] = shiftSouthWest(ONE << n) | shiftSouthEast(ONE << n);
     }
 }
 
 
@@ -154,8 +154,11 @@ constexpr bb::U64 KNIGHT_ATTACKS[] {
     0x0004020000000000ULL, 0x0008050000000000ULL, 0x00110a0000000000ULL, 0x0022140000000000ULL,
     0x0044280000000000ULL, 0x0088500000000000ULL, 0x0010a00000000000ULL, 0x0020400000000000ULL};
 
+
+
 extern bb::U64 ROOK_ATTACKS  [bb::N_SQUARES][4096];
 extern bb::U64 BISHOP_ATTACKS[bb::N_SQUARES][ 512];
+extern bb::U64 PAWN_ATTACKS  [bb::N_SQUARES][bb::N_COLORS];
 
 void init();
 
 
@@ -23,6 +23,7 @@
 namespace bb {
 U64 ALL_HASHES[N_PIECES][N_SQUARES] = {};
 U64 IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];
+U64  PINNED_MOVEMENT_SQUARES[N_SQUARES][N_SQUARES];
 
 U64 seed = 1293812938;
 
@@ -40,12 +41,12 @@ U64 randU64() {
 }
 
 void generateData() {
-    // in between squares
     for (Square n = A1; n <= H8; n++) {
         for (Square i = A1; i <= H8; i++) {
             if (i == n)
                 continue;
 
+            // in between squares
             U64 m   = ZERO;
             U64 occ = ZERO;
             setBit(occ, n);
@@ -65,8 +66,17 @@ void generateData() {
             }
 
             m &= ~occ;
-
             IN_BETWEEN_SQUARES[n][i] = m;
+            
+            // pinned squares (squares where pinned pieces can go to)
+            // index by king and piece itself
+            for(Direction d:{NORTH,SOUTH,WEST,EAST,NORTH_WEST,NORTH_EAST,SOUTH_WEST,SOUTH_EAST}){
+                U64 attacks = attacks::generateSlidingAttacks(n, d, ZERO);
+                if(attacks & occ){
+                    PINNED_MOVEMENT_SQUARES[n][i] = attacks;
+                    break;
+                }
+            }
         }
     }
 }
 
@@ -218,9 +218,10 @@ constexpr U64 CASTLING_BLACK_KINGSIDE_SAFE  = CASTLING_WHITE_KINGSIDE_SAFE << (7
 extern U64 seed;
 
 
-extern U64  ALL_HASHES[N_PIECES][N_SQUARES];
+extern U64 ALL_HASHES[N_PIECES][N_SQUARES];
+extern U64 IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];
+extern U64                PINNED_MOVEMENT_SQUARES[N_SQUARES][N_SQUARES];
 
-extern U64  IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];
 [[nodiscard]] inline Rank rankIndex(Square square_index) {
     return square_index >> 3;
 }
@@ -272,7 +273,7 @@ extern U64  IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];
     return p & 0x7;
 }
 
-[[nodiscard]] inline Piece getPiece(Color c, PieceType pt) {
+[[nodiscard]] inline constexpr Piece getPiece(Color c, PieceType pt) {
     return c * 8 + pt;
 }
Original file line number	Diff line number	Diff line change
`@@ -27,6 +27,8 @@ using namespace bb;`
`27`	`27`
`28`	`28`	`U64 attacks::ROOK_ATTACKS [N_SQUARES][4096]{};`
`29`	`29`	`U64 attacks::BISHOP_ATTACKS[N_SQUARES][ 512]{};`
	`30`	`+U64 attacks::PAWN_ATTACKS [N_SQUARES][N_COLORS]{};`
	`31`	`+`
`30`	`32`
`31`	`33`	`U64 populateMask(U64 mask, U64 index) {`
`32`	`34`	`U64 res = 0;`
`@@ -73,6 +75,10 @@ void attacks::init() {`
`73`	`75`	`#endif`
`74`	`76`	`BISHOP_ATTACKS[n][index] = generateBishopAttacks(n, rel_occ);`
`75`	`77`	`}`
	`78`	`+`
	`79`	`+ // pawn attacks`
	`80`	`+ PAWN_ATTACKS[n][WHITE] = shiftNorthWest(ONE << n) \| shiftNorthEast(ONE << n);`
	`81`	`+ PAWN_ATTACKS[n][BLACK] = shiftSouthWest(ONE << n) \| shiftSouthEast(ONE << n);`
`76`	`82`	`}`
`77`	`83`	`}`
`78`	`84`
Original file line number	Diff line number	Diff line change
`@@ -218,9 +218,10 @@ constexpr U64 CASTLING_BLACK_KINGSIDE_SAFE = CASTLING_WHITE_KINGSIDE_SAFE << (7`
`218`	`218`	`extern U64 seed;`
`219`	`219`
`220`	`220`
`221`		`-extern U64 ALL_HASHES[N_PIECES][N_SQUARES];`
	`221`	`+extern U64 ALL_HASHES[N_PIECES][N_SQUARES];`
	`222`	`+extern U64 IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];`
	`223`	`+extern U64 PINNED_MOVEMENT_SQUARES[N_SQUARES][N_SQUARES];`
`222`	`224`
`223`		`-extern U64 IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];`
`224`	`225`	`[[nodiscard]] inline Rank rankIndex(Square square_index) {`
`225`	`226`	`return square_index >> 3;`
`226`	`227`	`}`
`@@ -272,7 +273,7 @@ extern U64 IN_BETWEEN_SQUARES[N_SQUARES][N_SQUARES];`
`272`	`273`	`return p & 0x7;`
`273`	`274`	`}`
`274`	`275`
`275`		`-[[nodiscard]] inline Piece getPiece(Color c, PieceType pt) {`
	`276`	`+[[nodiscard]] inline constexpr Piece getPiece(Color c, PieceType pt) {`
`276`	`277`	`return c * 8 + pt;`
`277`	`278`	`}`
`278`	`279`