Getting an InvalidOperationException
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Getting an "InvalidOperationException: Behaviour not initialized: Object not set." with RPCs
Flaemnova
2022-06-17 14:14:07
Hello,
I am trying to sync a game launch event for a multiplayer game from a game session.
The following is my instance RPC, the networked variable and place I call it from:
[Networked(OnChanged = nameof(OnStateChanged))]
public NetworkBool LaunchGame { get; set; }
...
// if player count for a session is full, launch game
Debug.Log("Player count reached."); // this line is printed out in the console
RPC_LaunchGame(true); // any other Log statements aren't printed past this line
...
[Rpc(sources: RpcSources.All, targets: RpcTargets.All)]
public void RPC_LaunchGame(NetworkBool state) LaunchGame = state;
...
private static void OnStateChanged(Changed<GameLauncher> changed)
{
if(changed.Behaviour) changed.Behaviour.startGame();
}
I get the following Exception:
InvalidOperationException: Behaviour not initialized: Object not set.
Fusion.NetworkBehaviourUtils.ThrowIfBehaviourNotInitialized (Fusion.NetworkBehaviour behaviour) (at <147a77adcf864b659935f862fe8f5e7b>:0)
I'm not sure if i'm missing any necessary steps for using RPCs.
From using Log statements, I'm certain the the exception is thrown when the program reaches :
RPC_LaunchGame(true);
Any advice for tackling RPCs would be appreciated
Comments
Isaac_Augusto
2022-06-17 18:19:57
Hi,
LaunchGame
is a networked variable, so it need to be correctly initialized before being used.
If I understood correctly, you're trying to change it before even starting the runner, supposing that startGame()
starts the NetworkRunner
.
Make sure to only use networked variables after the Runner is launched and the NetworkBehaviour
was correctly linked in the simulation.
Isaac Augusto
Photon Fusion Team
I do create a gameobject and attach a networkRunner component on Start( ) (script is attached in the scene)
void Awake
()
{
GameObject go = new GameObject("Session");
DontDestroyOnLoad(go);
_runner = go.AddComponent<NetworkRunner>();
_runner.AddCallbacks(this);
}
Do I need to pass the variable to the runner to initialize it?
What do you mean by linking the NetworkBehaviour
to the Simulation?
Thank you for your reply 😀
Isaac_Augusto
2022-06-20 09:56:01
Hi,
As i said, networked variables can be used only when they are correctly initialised. For that, the Runner needs to be started already (with NetworkRunner.StartGame()
).
For what i see, the variable LaunchGame
is used before the NetworkRunner have been started, on the RPC_LaunchGame
, and that's causing the error.
Isaac Augusto
Photon Fusion Team
In my case, I got this error because the NetworkBehaviour I was trying to call the RPC from, which was on a gameObject that had been placed in the scene at edit time and was not spawned at runtime, wasn't baked correctly. Playing the scene baked it, and I stopped getting the error after I did that. (Previously, I hadn't hit play on that scene, only entered the scene from a different scene while playing).
Hi @knipsch .. I am getting the same error under same circumstances.. where I am coming from the HUB scene to the selected game scene. Here, On GameManager which is a NetworkBehavior already in the scene, when i call a RPC function, getting the issue of "Behavior not initialized: Object not set".
I did rebuild the table for NetworkConfig and also played the scene once. Still i am getting the same error. Please let me know of any other steps that i am missing here
Ajit 2023-02-06T06:23:06+00:00
Hi @knipsch .. I am getting the same error under same circumstances.. where I am coming from the HUB scene to the selected game scene. Here, On GameManager which is a NetworkBehavior already in the scene, when i call a RPC function, getting the issue of "Behavior not initialized: Object not set".
I did rebuild the table for NetworkConfig and also played the scene once. Still i am getting the same error. Please let me know of any other steps that i am missing here
@Ajit - It's probably too late, as it's been a few weeks, but I just ran into this same problem and it was because the NetworkObject I was trying to call the RPC on was a child of the NetworkRunner object. There can't be a NetworkObject anywhere in the hierarchy under the NetworkRunner or things get wonky. Hope this helps :)
RemyGamapi
2023-03-08 17:25:06
Ajit 2023-02-06T06:23:06+00:00
Hi @knipsch .. I am getting the same error under same circumstances.. where I am coming from the HUB scene to the selected game scene. Here, On GameManager which is a NetworkBehavior already in the scene, when i call a RPC function, getting the issue of "Behavior not initialized: Object not set".
I did rebuild the table for NetworkConfig and also played the scene once. Still i am getting the same error. Please let me know of any other steps that i am missing here
Hi, I had the same problem and solved it by loading the faulty scene with the fusion scene manager instead of the Unity one.
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