PhotonNetwork.GetRoomList C# (CSharp) Method

    public static RoomInfo[] GetRoomList()
    {
        if (offlineMode)
        {
            return new RoomInfo[0];
        }

        if (networkingPeer == null)
        {
            return new RoomInfo[0]; // Surpress erorrs when quitting game
        }

        return networkingPeer.mGameListCopy;
    }

    /*
     * Renders the lobby room and player create menu
     */
    void OnGUI()
    {
        // lobby
        if (gameState == GameState.InLobby)
        {
            GUILayout.BeginArea(new Rect(Screen.width / 2 - 150, Screen.height / 2 - 150, 300, 300));

            playerName = GUILayout.TextField(playerName);
            roomName   = GUILayout.TextField(roomName);
            if (GUILayout.Button("Create"))
            {
                PhotonNetwork.JoinOrCreateRoom(roomName, null, null);
            }

            // Display a list of available rooms on the server
            foreach (RoomInfo game in PhotonNetwork.GetRoomList())
            {
                if (GUILayout.Button(game.name + " " + game.playerCount + "/" + game.maxPlayers))
                {
                    PhotonNetwork.JoinOrCreateRoom(game.name, null, null);
                }
            }

            GUILayout.EndArea();
        }

        // room
        if (gameState == GameState.InRoom)
        {
            GUILayout.BeginArea(new Rect(Screen.width / 2 - 150, Screen.height / 2 - 150, 300, 300));
            GUILayout.Box("Your current score: " + PhotonNetwork.player.GetScore());

            // Class selection
            GUILayout.Label("Choose your class");
            if (GUILayout.Button("SWAT"))
            {
                spawnPlayer(SWAT);
            }
            if (GUILayout.Button("Assault"))
            {
                spawnPlayer(Assault);
            }

            GUILayout.Label("");
            if (GUILayout.Button("Quit room"))
            {
                PhotonNetwork.Disconnect();
                SceneManager.LoadScene(0);
            }

            GUILayout.EndArea();
        }

        if (gameState == GameState.Die)
        {
            GUILayout.BeginArea(new Rect(Screen.width / 2 - 150, Screen.height / 2 - 150, 300, 300));
            GUILayout.Box("You Died");

            if (GUILayout.Button("Back to room"))
            {
                PhotonNetwork.Destroy(ragDoll);
                OnJoinedRoom();
            }

            GUILayout.EndArea();
        }
    }