Question - Trying to send command for object without authority

Unity Engine
1

Hello,

I am struggling two days now. So actually I created my own lobby where the player is able to join a match through the network. The player is able to create a server(client/host) and a second one is able to join it. When the second player joined, I want that both players getting a HUD activated. I tried it with an empty gameobject with the following script:

using UnityEngine;
using System.Collections;
using UnityEngine.Networking;

public class ServerManager : NetworkBehaviour
{
    public static ServerManager instance;

    public GameObject CubeSelectionCanvas;

    void Awake()
    {
        instance = this;
    }

    [Command]
    public void CmdStartMatch()
    {
        RpcStartMatch();
    }

    [ClientRpc]
    public void RpcStartMatch()
    {
        CubeSelectionCanvas.SetActive(true);
    }

}

Furthermore the empty gameobject has an NetworkIdentity component attached with ‘Server only’.

The command is getting called by the second player, when he joins the match with: ServerManager.instance.CmdStartMatch();. Both players are getting instantiated with the NetworkManager and both have the ‘Local Player Authority’. Everytime when a client is trying to connect to the server, the following warning message is coming: ‘Trying to send command for object without authority’.

Testingwise I also added a script to my player and tried this:

public override void OnStartLocalPlayer()
{
    ServerManager.instance.CmdStartMatch();
}

It is working for the Client/Host, but does not work for the normal client.

Does someone have a solution for it? Thanks in advance.

Sander

2

You unfortunatly cannot call commands on Netobjects where you have no authority. It is working for your Host because he has authority.
For your case, if I read correct, you could simply activate your UI when the second player is started, right?

public class Player : NetworkBehaviour
{
    public static HashSet<Player> ActivePlayers = new HashSet<Player>();
    public override void OnStartClient()
    {
        base.OnStartClient();
        ActivePlayers.Add(this);
        if (ActivePlayers.Count == 2)
            ServerManager.instance.CubeSelectionCanvas.SetActive(true);
    }
    protected void OnDestroy()
    {
        ActivePlayers.Remove(this);
    }
}
2 Likes
3

Thank you very much @PhilippG - that is working!

4

Small point, no need to call base.OnStartClient, the virtual function is empty
(NetworkBehaviour source: https://goo.gl/R17vLx)

5

You never know what the next update brings :wink:

1 Like