fix: compute positioning for color

1 files changed, 22 insertions, 21 deletions

diff --git a/src/main.c b/src/main.c
index 4471c37..f8592dc 100644
--- a/src/main.c
+++ b/src/main.c
@@ -452,29 +452,30 @@ int compute_positioning_score(int* board, int color) {
     for (double file = 0; file < 8; file++) {
       int index = rank * 16 + file;
       int piece = board[index];
-      int score = 7 - (fabs(rank - center) + fabs(file - center));
+      if (piece % 2 == color) {
+        int score = 7 - (fabs(rank - center) + fabs(file - center));
 
-      int multiplier = 1;
-      switch (piece & NO_COLOR) {
-        case KNIGHT:
-          multiplier = 4;
-          break;
-        case BISHOP:
-          multiplier = 3;
-          break;
-        case PAWN:
-          multiplier = 2;
-          break;
-        case KING:
-          multiplier = -5; // Discourage king in center (encourage castle)
-          // TODO: encourage king in center after opponent has low material <= 6
-          break;
-        default:
-          multiplier = 1;
-          break;
+        int multiplier = 1;
+        switch (piece & NO_COLOR) {
+          case KNIGHT:
+            multiplier = 4;
+            break;
+          case BISHOP:
+            multiplier = 3;
+            break;
+          case PAWN:
+            multiplier = 2;
+            break;
+          case KING:
+            multiplier = -5; // Discourage king in center (encourage castle)
+            // TODO: encourage king in center after opponent has low material <= 6
+            break;
+          default:
+            multiplier = 1;
+            break;
+        }
+        total_score += score * multiplier;
       }
-
-      total_score += score * multiplier;
     }
   }