initial BoardValueMap

src/logic/board_value.rs

@@ -0,0 +1,20 @@
+use crate::repr::{Board, Piece, PosMap};
+
+pub struct BoardValueMap(PosMap<f32>);
+
+impl BoardValueMap {
+    pub fn board_value(&self, board: &Board, color: Piece) -> f32 {
+        let mut board_value: f32 = 0.0;
+        for (i, j) in Board::all_positions() {
+            if let Some(pos_p) = board.get(i, j) {
+                let mut value = *self.0.get(i, j);
+                if pos_p != color {
+                    // enemy has position
+                    value = -value;
+                }
+                board_value += value;
+            }
+        }
+        board_value
+    }
+}

src/logic/mod.rs

@@ -1,3 +1,4 @@
+mod board_value;
 mod future_moves;
 mod r#move;
 pub use future_moves::FutureMoves;