1 files changed, 6 insertions, 4 deletions
diff --git a/game_server/src/scribble_group.rs b/game_server/src/scribble_group.rs
index 0d2c0f1..8980e7b 100644
--- a/game_server/src/scribble_group.rs
+++ b/game_server/src/scribble_group.rs
@@ -1,6 +1,7 @@
-use super::group::{Group, GroupId};
-use super::server::{UserId, GameClient,
-                    ClientSender, ClientReceiver};
+use crate::group::{Group, GroupId};
+use crate::server::{UserId, GameClient,
+                    ClientSender, ClientReceiver,
+                    GameServerError};
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
 
@@ -27,13 +28,14 @@ impl Group for ScribbleGroup {
         info!("a new group {}:'{}' runs now", self.id, self.name);
     }
 
-    fn add_client(&mut self, id: UserId, client: GameClient) {
+    fn add_client(&mut self, id: UserId, client: GameClient) -> Result<(), GameServerError> {
         debug!("user {} joined the group {}:'{}'", id, self.id, self.name);
         let (sen, rec) = client.split();
         self.senders.lock().unwrap().insert(id, sen);
         let senders_mutex = self.senders.clone();
         let self_uid = id;
         std::thread::spawn(move || Self::broadcast_clients(self_uid, rec, senders_mutex));
+        Ok(())
     }
 }