Board: change types for score

src/repr/bitboard.rs

@@ -38,8 +38,8 @@ impl BitBoard {
         self.0 |= (value as BitBoardInner) << index; // set bit (if needed)
     }
 
-    pub const fn count(&self) -> usize {
-        self.0.count_ones() as usize
+    pub const fn count(&self) -> u8 {
+        self.0.count_ones() as u8
     }
 
     pub const fn is_empty(&self) -> bool {

src/repr/board.rs

@@ -320,16 +320,10 @@ impl Board {
     }
 
     /// Count the number of a type of [`Piece`] on the board
-    pub const fn count(&self, piece: Piece) -> usize {
+    pub const fn count(&self, piece: Piece) -> u8 {
         get_board!(self, piece).count()
     }
 
-    /// Get the "net score" of a player
-    /// Formula: `net_score = Score_player - Score_opponent`
-    pub const fn net_score(&self, piece: Piece) -> i16 {
-        self.count(piece) as i16 - self.count(piece.flip()) as i16
-    }
-
     /// Returns the winner of the board (if any)
     pub fn game_winner(&self) -> Winner {
         // Wikipedia: `Players take alternate turns. If one player cannot make a valid move, play passes back to the other player. The game ends when the grid has filled up or if neither player can make a valid move.`