transition

kiln-core/src/game.rs

@@ -128,6 +128,15 @@ impl GameState {
         &self.current_board_name
     }
 
+    /// Returns a clone of the `Rc` for the active board.
+    ///
+    /// Lets a front-end hold a reference to the current board across a board
+    /// transition — the old board stays alive in `world.boards`, so the clone
+    /// keeps it reachable even after `current_board_name` changes.
+    pub fn board_rc(&self) -> std::rc::Rc<std::cell::RefCell<Board>> {
+        self.world.boards[&self.current_board_name].clone()
+    }
+
     /// Appends a styled message to the log.
     pub fn log(&mut self, line: LogLine) {
         self.log.push(line);