implement Clone

src/room.rs

@@ -3,7 +3,7 @@ use crate::game::{RoomType, RoomFormat};
 use crate::exit::Transition;
 use std::str::FromStr;
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Room {
     pub id: u64,
     pub palette_id: Option<u64>, // optional in very early versions