place weighting

src/logic/board_value.rs

@@ -1,9 +1,9 @@
 use crate::repr::{Board, Piece, PosMap};
 
-pub struct BoardValueMap(PosMap<i8>);
+pub struct BoardValueMap(PosMap<i64>);
 
 impl BoardValueMap {
-    pub fn board_value(&self, board: &Board, color: Piece) -> i8 {
+    pub fn board_value(&self, board: &Board, color: Piece) -> i64 {
         Board::all_positions()
             .filter_map(|(i, j)| board.get(i, j).map(|p| (i, j, p)))
             .map(|(i, j, pos_p)| {
@@ -25,7 +25,11 @@ impl BoardValueMap {
         }
 
         for (i, j) in Board::sides() {
-            map.set(i, j, 4);
+            map.set(i, j, 100);
+        }
+
+        for (i, j) in Board::corners() {
+            map.set(i, j, 1000);
         }
 
         Self(map)

src/logic/move.rs

@@ -55,6 +55,6 @@ impl Move {
             return 0;
         }
 
-        BVM.board_value(&self.board, agent_color) as i64
+        BVM.board_value(&self.board, agent_color)
     }
 }