Make PieceProtectedByPawnBonus bucketed

lynx-chess · Jan 6, 2025 · 3a00650 · 3a00650
1 parent 9790982
commit 3a00650
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Showing 2 changed files with 5,401 additions and 5,445 deletions.
diff --git a/src/Lynx/Model/Position.cs b/src/Lynx/Model/Position.cs
@@ -424,7 +424,7 @@ public bool WasProduceByAValidMove()
             // Bitboard copy that we 'empty'
             var bitboard = PieceBitBoards[pieceIndex];
 
-            packedScore += PieceProtectedByPawnBonus[pieceIndex] * (whitePawnAttacks & bitboard).CountBits();
+            packedScore += PieceProtectedByPawnBonus[whiteBucket][pieceIndex] * (whitePawnAttacks & bitboard).CountBits();
 
             while (bitboard != default)
             {
@@ -447,7 +447,7 @@ public bool WasProduceByAValidMove()
             var bitboard = PieceBitBoards[pieceIndex];
 
             // Pieces protected by pawns bonus
-            packedScore -= PieceProtectedByPawnBonus[pieceIndex - 6] * (blackPawnAttacks & bitboard).CountBits();
+            packedScore -= PieceProtectedByPawnBonus[blackBucket][pieceIndex - 6] * (blackPawnAttacks & bitboard).CountBits();
 
             while (bitboard != default)
             {
@@ -673,7 +673,7 @@ private int PawnAdditionalEvaluation(int bucket, int squareIndex, int pieceIndex
         // Pawn phalanx
         if (Constants.File[squareIndex] != 7 && PieceBitBoards[pieceIndex].GetBit(squareIndex + 1))
         {
-            packedBonus += PawnPhalanxBonus[bucket][rank];
+            packedBonus += PawnPhalanxBonus[rank];
         }
 
         return packedBonus;