Use User.group instead of iterating over groups

Thanks @moufmouf for pointing this out.

back/src/Model/GameRoom.ts

@@ -92,15 +92,6 @@ export class GameRoom {
         return gameRoom;
     }
 
-    public getGroups(): Group[] {
-        return Array.from(this.groups.values());
-    }
-
-    public getGroupIncludingUser(user: User): Group | undefined {
-        const foundGroups = this.getGroups().filter((grp) => grp.includes(user));
-        return foundGroups[0];
-    }
-
     public getUsers(): Map<number, User> {
         return this.users;
     }
@@ -239,13 +230,11 @@ export class GameRoom {
     }
 
     public sendToOthersInGroupIncludingUser(user: User, message: ServerToClientMessage): void {
-        this.getGroupIncludingUser(user)
+        user.group?.getUsers().forEach((currentUser: User) => {
-            ?.getUsers()
+            if (currentUser.name !== user.name) {
-            .forEach((currentUser: User) => {
+                currentUser.socket.write(message);
-                if (currentUser.name !== user.name) {
+            }
-                    currentUser.socket.write(message);
+        });
-                }
-            });
     }
 
     public sendToUserWithName(name: string, message: ServerToClientMessage): void {

back/src/Services/SocketManager.ts

@@ -860,8 +860,7 @@ export class SocketManager {
             room.sendToOthersInGroupIncludingUser(user, clientMessage);
 
             // Update followers
-            const group = room.getGroupIncludingUser(user);
+            user.group?.getUsers().forEach((user) => {
-            group?.getUsers().forEach((user) => {
                 user.following = [];
             });
         } else {