Photon TrueSync is giving un-debuggable errors

Xelnath · February 2017

I get this spammed to my window when I create a TrueSync manager then add players to it as they login:


NullReferenceException: Object reference not set to an instance of an object
TrueSync.TrueSyncManagedBehaviour.OnSyncedStart ()
TrueSync.TrueSyncManager.OnGameStarted () (at Assets/Standard Assets/TrueSync/Unity/TrueSyncManager.cs:838)
TrueSync.AbstractLockstep.Run ()
TrueSync.AbstractLockstep.RunSimulation (Boolean firstRun)
TrueSync.AbstractLockstep.CheckGameStart ()
TrueSync.AbstractLockstep.Update ()
TrueSync.TrueSyncManager.FixedUpdate () (at Assets/Standard Assets/TrueSync/Unity/TrueSyncManager.cs:697)

JeffersonHenrique · February 2017

Hi @Xelnath, are you adding players in a "late join" way? Can you give more details how are you creating TSManager? Thanks.

Xelnath · February 2017

I'm trying. Here's the code:



public TrueSync.TrueSyncManager TrueSyncManager = null; 

public override void OnPhotonPlayerConnected( PhotonPlayer other )
{
DebugLogFormat( "OnPhotonPlayerConnected() " + other.NickName ); // not seen if you're the player connecting

DetectPhotonPlayers();
}

public void SetupTrueSync()
{
if ( TrueSyncManager == null ) 
{
GameObject go = new GameObject("TrueSyncManager");
DontDestroyOnLoad(go);
TrueSyncManager = go.AddComponent<TrueSync.TrueSyncManager>();
}
}

public override void OnJoinedRoom ()
{
DetectPhotonPlayers();
}

public void DetectPhotonPlayers()
{
DebugLogFormat("Detecting players: {0}", PhotonNetwork.playerList.Length );

SetupTrueSync();

if ( PhotonNetwork.isMasterClient == false ) 
{
DebugLogFormat("You are not the master. You cannot pick out new ServerIDs. (PhotonPlayer {0})", PhotonNetwork.player.ID );
return;
}

for ( int i = 0; i < PhotonNetwork.playerList.Length; i++ )
{
PhotonPlayer player = PhotonNetwork.playerList[i];
if ( player.TagObject == null ) 
{
var network = FindObjectOfType<DebugNetwork>();
network.SpawnNewPlayerObject(player);
}
}
}

.... 

SpawnNewPlayerObject()
{
.... create some objects.
// Register again
TrueSyncManager.AddPlayer(player, go);
}

public void AddPlayer(PhotonPlayer player, GameObject playerObject)
{
lockstep.AddPlayer((byte)player.ID, player.NickName, player.IsLocal);

TSPlayer p = lockstep.Players[(byte)player.ID];

List<TrueSyncManagedBehaviour> behaviorsInstatiated = new List<TrueSyncManagedBehaviour>();

TrueSyncBehaviour[] behaviours = playerObject.GetComponentsInChildren<TrueSyncBehaviour>();

foreach (TrueSyncBehaviour behaviour in behaviours) {
behaviour.owner = p.playerInfo;
behaviour.localOwner = lockstep.LocalPlayer.playerInfo;
behaviour.numberOfPlayers = lockstep.Players.Count;

TrueSyncManagedBehaviour tsmb = NewManagedBehavior(behaviour);
tsmb.owner = behaviour.owner;
tsmb.localOwner = behaviour.localOwner;

behaviorsInstatiated.Add(tsmb);
}

behaviorsByPlayer.Add( p.ID, behaviorsInstatiated);
}

Xelnath · February 2017

In a nutshell, I attempted to fully replicate all of the same setup steps as occurs for a player detected at scene load.

JeffersonHenrique · February 2017

I understood, unfortunately our lockstep core doesn't support that. Another thing that is important to mention is "OnPhotonPlayerConnected" callback deterministic which means it can be triggered at different frames in two different clients.

Xelnath · February 2017

I see.

It seems like the player-connected message could be capture by all clients, then when they agree a player exists, simultaneously add the new player in the same frame.

This type of basic gate-keeping seems very feasible, yes?

JeffersonHenrique · February 2017

Sure @Xelnath, it is an option, but one of the problems is that the new player has to simulate all the frame until the frame he was accepted, it can take a lot of time in a basic implemetation and other players have to wait for this (lag).

Photon TrueSync is giving un-debuggable errors

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