Problem in authority shifting of non-player object

Question

I am making a multiplayer game and I want to have player to interact with a non-player object (whose transform can be changed by any player). When I interact them with the player who joined first (or the guy who is hosting) its working but if I try to interact it with the another player (the one who joined second) the objects goes back to the location that the first player left him at.

So what I tried is to shift the authority of non-player object but I am having the following errors. Anyone is having the same issue or knows any other way to do the above task? I am using the following code to change the authority:

    [Command]
    void Cmd_AssignLocalAuthority(GameObject obj)
    {
        print("shifting authority successfully");
        NetworkInstanceId nIns = obj.GetComponent<NetworkIdentity>().netId;
        GameObject client = NetworkServer.FindLocalObject(nIns);
        NetworkIdentity ni = client.GetComponent<NetworkIdentity>();
        ni.AssignClientAuthority(connectionToClient);
    }

    [Command]
    void Cmd_RemoveLocalAuthority(GameObject obj)
    {
        print("reverting authority successfully");
        NetworkInstanceId nIns = obj.GetComponent<NetworkIdentity>().netId;
        GameObject client = NetworkServer.FindLocalObject(nIns);
        NetworkIdentity ni = client.GetComponent<NetworkIdentity>();
        ni.RemoveClientAuthority(ni.clientAuthorityOwner);
    }

And the error I am getting is this

Lotan Lotan · Accepted Answer · 2018-10-20T10:30:14

You need to know that the changes SHOULD be called from a player object, not the object itself, as it do not have authority.

For setting authority you should do something like this:

    [Command]
    public void CmdSetAuth(NetworkInstanceId objectId, NetworkIdentity player)
    {
        GameObject iObject = NetworkServer.FindLocalObject(objectId);
        NetworkIdentity networkIdentity = iObject.GetComponent<NetworkIdentity>();

        //Checks if anyone else has authority and removes it and lastly gives the authority to the player who interacts with object
        NetworkConnection otherOwner = networkIdentity.clientAuthorityOwner;
        if (otherOwner == player.connectionToClient)
        {
            return;
        }
        else
        {
            if (otherOwner != null)
            {
                networkIdentity.RemoveClientAuthority(otherOwner);
            }
            networkIdentity.AssignClientAuthority(player.connectionToClient);
        }

        networkIdentity.AssignClientAuthority(player.connectionToClient);
    }

Problem in authority shifting of non-player object

1 Answers