From a3b75d633fc399d704cc9d12e934d92afadde311 Mon Sep 17 00:00:00 2001
From: Simon Gardling <titaniumtown@proton.me>
Date: Thu, 3 Apr 2025 14:12:15 -0400
Subject: [PATCH] simplify FutureMoves::root_from_child_idx_board

---
 src/logic/future_moves.rs | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/logic/future_moves.rs b/src/logic/future_moves.rs
index 11b2750..17bdd49 100644
--- a/src/logic/future_moves.rs
+++ b/src/logic/future_moves.rs
@@ -372,7 +372,7 @@ impl FutureMoves {
             });
 
         if let Some(curr_board_idx) = curr_board {
-            self.root_from_child_idx_board(curr_board_idx, *board);
+            self.root_from_child_idx(curr_board_idx);
             false
         } else {
             if self.config.print && !self.arena.is_empty() {
@@ -397,7 +397,10 @@ impl FutureMoves {
         self.board = board;
     }
 
-    fn root_from_child_idx_board(&mut self, idx: usize, board: Board) {
+    fn root_from_child_idx(&mut self, idx: usize) {
+        let board = self
+            .get_board_from_idx(idx)
+            .expect("unable to get board at idx");
         self.current_depth -= self.depth_of(idx);
         self.current_root = Some(idx);
         self.board = board;
@@ -638,11 +641,7 @@ mod tests {
         assert_eq!(futm.arena_len(), 5);
 
         // move to a child
-        futm.root_from_child_idx_board(
-            1,
-            futm.get_board_from_idx(1)
-                .expect("unable to get board from child"),
-        );
+        futm.root_from_child_idx(1);
         futm.refocus_tree();
         assert_eq!(futm.arena_len(), 1);