add debug stuff to game_inner

src/game_inner.rs

@@ -1,6 +1,6 @@
 use crate::{
     agent::Agent,
-    repr::{Board, Piece, Winner},
+    repr::{Board, CoordPair, Piece, Winner},
 };
 
 impl std::fmt::Display for GameInner {
@@ -18,10 +18,20 @@ impl std::fmt::Display for GameInner {
     }
 }
 
+impl std::fmt::Debug for GameInner {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        writeln!(f, "FirstBoard:\n{}", self.first_board)?;
+        writeln!(f, "\nmove_log: {:?}", self.move_log)?;
+        Ok(())
+    }
+}
+
 pub struct GameInner {
     players: [Box<dyn Agent>; 2],
     board: Board,
     do_print: bool,
+    move_log: Vec<(Option<CoordPair>, Piece)>,
+    first_board: Board,
 }
 
 impl GameInner {
@@ -47,6 +57,8 @@ impl GameInner {
             players: [player1, player2],
             board,
             do_print,
+            move_log: Vec::new(),
+            first_board: board,
         }
     }
 
@@ -58,6 +70,7 @@ impl GameInner {
         // when it comes to human input
         loop {
             let player_move = self.players[player_i].next_move(&self.board);
+            self.move_log.push((player_move, player_color));
 
             if let Some(coord) = player_move {
                 match self.board.place(coord, player_color) {
@@ -71,8 +84,8 @@ impl GameInner {
 
                     Err(err) => {
                         panic!(
-                            "Invalid move by Player {}: {}. Move: {}",
-                            player_i, err, coord
+                            "Invalid move by Player {}: {}. Move: {} State: {:?}",
+                            player_i, err, coord, self
                         );
                     }
                 }