feat!: account for mobility instead of coverage

1 files changed, 9 insertions, 16 deletions

diff --git a/src/main.c b/src/main.c
index f8592dc..5b28b92 100644
--- a/src/main.c
+++ b/src/main.c
@@ -351,19 +351,19 @@ int compute_material_advantage(int* board, int color) {
            counter += evaluate_pawn(piece, rank) * sign;
            break;
           case KNIGHT:
-            counter += 3 * sign;
+            counter += 30 * sign;
             break;
           case BISHOP:
-            counter += 3 * sign;
+            counter += 30 * sign;
             break;
           case ROOK:
-            counter += 4 * sign;
+            counter += 45 * sign;
             break;
           case QUEEN:
-            counter += 9 * sign;
+            counter += 90 * sign;
             break;
           default:
-            counter += 1 * sign;
+            counter += 0 * sign;
             break;
         }
       }
@@ -487,16 +487,9 @@ int compute_positioning_score(int* board, int color) {
  * for WHITE, meaining WHITE tries to maximize this
  * value and BLACK tries to minimize it.
  */
-int compute_score(int* board) {
+int compute_score(int* board, int mobility) {
   int material_advantage = compute_material_advantage(board, WHITE);
-
-  int coverage_score = compute_coverage(board, WHITE) - compute_coverage(board, BLACK);
-  int normalized_coverage = coverage_score / 2;
-
-  int positioning_score = compute_positioning_score(board, WHITE) - compute_positioning_score(board, BLACK);
-  int normalized_positioning = positioning_score / 7;
-
-  return 3 * material_advantage + coverage_score + positioning_score;
+  return material_advantage + mobility;
 }
 
 int list_available_moves(Move* moves, int* board, int color) {
@@ -583,7 +576,7 @@ Move find_best_move(int* board, int color, int depth, int alpha, int beta, int*
 
       move.value = depth < MAX_DEPTH
         ? find_best_move(board, 1 - color, depth + 1, alpha, beta, metrics).value
-        : compute_score(board);
+        : compute_score(board, color == WHITE ? availabel_moves_count : -availabel_moves_count);
 
       reverse_move(move, captured_piece, board);
 
@@ -613,7 +606,7 @@ int main() {
 
   while (1) {
     if (color == PLAYER) {
-      printf("Current score is %i\n", compute_score(board));
+      // printf("Current score is %i\n", compute_score(board));
       printf("White coverage: %i, black coverage: %i\n", compute_coverage(board, WHITE), compute_coverage(board, BLACK));
       printf("Enter a move for %s:\n", COLORS[color]);
       move = input_move();