"Join Game" button not present in Steam overlay

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,
#1

This is for a slightly different project. When friend hosts a lobby I can’t join:
image

I am using:

  • Unity 2021.3.17
  • Mirror 73.0.0
  • FizzySteamworks 5.1.0
  • Steamworks.NET 20.1.0

I have enabled useSteam, dragged in the FizzySteamworks transport, added SteamManager component to the network manager, and added the steam_appid.txt file to the build folder.

MainMenu.cs (primary change is that main menu and lobby are on different scenes):

using System.Collections;
using System.Collections.Generic;
using Mirror;
using Steamworks;
using UnityEngine;
using UnityEngine.SceneManagement;

public class MainMenu : MonoBehaviour
{
    [Scene]
    [SerializeField] string mainMenuScene;
    [Scene]
    [SerializeField] string lobbyScene;

    bool useSteam;
    int maxConnections;

    protected Callback<LobbyCreated_t> lobbyCreated;
    protected Callback<GameLobbyJoinRequested_t> gameLobbyJoinRequested;
    protected Callback<LobbyEnter_t> lobbyEntered;

    const string HostAddressKey = "HostAddress";


    void Start()
    {
        useSteam = ((MyNetworkManager)MyNetworkManager.singleton).UseSteam;
        maxConnections = ((MyNetworkManager)MyNetworkManager.singleton).MaxConnections;

        if (!useSteam) { return; }

        lobbyCreated = Callback<LobbyCreated_t>.Create(OnLobbyCreated);
        gameLobbyJoinRequested = Callback<GameLobbyJoinRequested_t>.Create(OnGameLobbyJoinRequested);
        lobbyEntered = Callback<LobbyEnter_t>.Create(OnLobbyEntered);
    }

    public void HostLobby()
    {
        // TODO: Add a loading screen

        if (useSteam)
        {
            SteamMatchmaking.CreateLobby(ELobbyType.k_ELobbyTypeFriendsOnly, maxConnections);
            return;
        }

        SceneManager.LoadScene(lobbyScene);

        NetworkManager.singleton.StartHost();
    }

    private void OnLobbyCreated(LobbyCreated_t callback)
    {
        if (callback.m_eResult != EResult.k_EResultOK)
        {
            SceneManager.LoadScene(mainMenuScene);
            return;
        }

        CSteamID lobbyId = new CSteamID(callback.m_ulSteamIDLobby);
        MyNetworkManager.LobbyId = lobbyId.m_SteamID;

        NetworkManager.singleton.StartHost();

        SteamMatchmaking.SetLobbyData(
            lobbyId,
            HostAddressKey,
            SteamUser.GetSteamID().ToString());
    }

    private void OnGameLobbyJoinRequested(GameLobbyJoinRequested_t callback)
    {
        SteamMatchmaking.JoinLobby(callback.m_steamIDLobby);
    }

    private void OnLobbyEntered(LobbyEnter_t callback)
    {
        if (NetworkServer.active) { return; }

        string hostAddress = SteamMatchmaking.GetLobbyData(
            new CSteamID(callback.m_ulSteamIDLobby),
            HostAddressKey);

        NetworkManager.singleton.networkAddress = hostAddress;
        NetworkManager.singleton.StartClient();

        SceneManager.LoadScene(lobbyScene);
    }
}
#2

Hi there,
Did you include the steam_appid.txt file with the games files for steam? Not including this can cause issues. In recent versions of fizzy steamworks it is not included by default.

#3

Yes, I have done that.

#4

The other requirement is that your friend needs to have the game open on their computer before they can join.

#5

My friend (friended on Steam) added the build to their library but the “Join Game” button is still not there on their end even when I am hosting the lobby.

#6

Even when your friend also has the game open?

#7

Yes, my friend doesn’t see the button when the game is open.

#8

Does the main menu object persist to the lobby scene?

#11

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