improve debug messages

1 files changed, 13 insertions, 10 deletions

diff --git a/tic_tac_toe/src/ai.rs b/tic_tac_toe/src/ai.rs
index e2d8918..4071ee3 100644
--- a/tic_tac_toe/src/ai.rs
+++ b/tic_tac_toe/src/ai.rs
@@ -5,7 +5,6 @@ use crate::{GameState, check_state};
 pub struct BestMove {
     pub coord: Coord,
     eval: i8,
-    depth: u32,
 }
 
 fn eval_for_player(board: &Board, player: Tile) -> i8 {
@@ -37,7 +36,7 @@ fn eval_for_player(board: &Board, player: Tile) -> i8 {
     }
 }
 
-pub fn get_best_move(board: &Board, player: Tile, is_tl: bool, depth: u32) -> BestMove {
+pub fn get_best_move(board: &Board, player: Tile, is_tl: bool) -> BestMove {
     //base case
     //game is over, return eval
     let eval = eval_for_player(board, player);
@@ -47,7 +46,6 @@ pub fn get_best_move(board: &Board, player: Tile, is_tl: bool, depth: u32) -> Be
         return BestMove {
             coord: (99, 99),
             eval,
-            depth,
         };
     }
 
@@ -64,9 +62,10 @@ pub fn get_best_move(board: &Board, player: Tile, is_tl: bool, depth: u32) -> Be
     let mut cur_best = BestMove {
         eval: i8::min_value(),
         coord: possible_moves[0],
-        depth,
     };
 
+    let p_move_count = possible_moves.len();
+
     for p_move in possible_moves {
         let mut new_board = board.clone();
         new_board.set_at_coord(p_move, player);
@@ -79,7 +78,7 @@ pub fn get_best_move(board: &Board, player: Tile, is_tl: bool, depth: u32) -> Be
             Tile::Unowned => Tile::PlayerOne,
         };
 
-        let response_move = get_best_move(&new_board, other_player, false, depth + 1);
+        let response_move = get_best_move(&new_board, other_player, false);
         if response_move.coord.0 != 99 {
             new_board.set_at_coord(response_move.coord, other_player);
         }
@@ -87,10 +86,6 @@ pub fn get_best_move(board: &Board, player: Tile, is_tl: bool, depth: u32) -> Be
         //this is the inverse of the response eval
         let response_eval = -response_move.eval;
 
-        if is_tl {
-            println!("AI > If I make move {p_move:?}, the best response is {response_move:?}");
-        }
-
         //slightly bias for the centre to beat weak players
         let centre_bias = if p_move == (1, 1) { 1 } else { 0 };
 
@@ -98,12 +93,20 @@ pub fn get_best_move(board: &Board, player: Tile, is_tl: bool, depth: u32) -> Be
             cur_best = BestMove {
                 coord: p_move,
                 eval: response_eval + centre_bias,
-                depth: response_move.depth,
             };
         }
     }
 
     if is_tl {
+        //log thought process
+        println!("AI > There are {p_move_count} moves that I can play");
+        let sentiment = match cur_best.eval {
+            -100 | -101 => "I'll lose this game if my opponent plays right",
+            -9 | -10 | -11 => "If my opponent plays well, this will be a draw",
+            100 | 101 => "I'll win this game",
+            _ => "I can't predict the outcome of this game",
+        };
+        println!("AI > ({sentiment})");
         println!("AI > I'll play {cur_best:?}")
     }