Board layers

kiln-core/src/world.rs

@@ -1,11 +1,11 @@
 //! World type: a named collection of boards loaded from a single `.toml` file.
 
-use std::cell::RefCell;
-use std::collections::HashMap;
-use std::rc::Rc;
 use crate::board::Board;
 use crate::map_file::MapFile;
 use serde::Deserialize;
+use std::cell::RefCell;
+use std::collections::HashMap;
+use std::rc::Rc;
 
 /// A named world containing one or more boards, loaded from a `.toml` file.
 ///
@@ -71,8 +71,7 @@ pub fn load(path: &str) -> Result<World, Box<dyn std::error::Error>> {
     // hard errors; everything else is nonfatal and lands on Board::load_errors.
     let mut boards = HashMap::new();
     for (key, map_file) in wf.boards {
-        let board = Board::try_from(map_file)
-            .map_err(|e| format!("board '{}': {}", key, e))?;
+        let board = Board::try_from(map_file).map_err(|e| format!("board '{}': {}", key, e))?;
         boards.insert(key, Rc::new(RefCell::new(board)));
     }