UNET SyncVar on a NetworkInstanceId SyncList structure not updating across network

Question

Hi,

I've been looking for a solution on the web for the past hours, time to ask it myself... I have a SyncList structure with NetworkInstanceIds in it to share across all clients but it doesn't get updated. The list is up to date on the server for each player when I modify it, but it doesn't spread. I'm doing all the changes on the server and I don't know what to do to solve this.

Here's when I define the SyncVar :

     [SyncVar]
     public Structures.SyncListNetworkInstanceId secrets = new Structures.SyncListNetworkInstanceId();

Then I modify it here on the server only (I guess you don't need the full details of the project but I just need to pass the id of the secret objects) :

     [Server]
     public void DispatchSecrets()
     {
         // TODO : Something more proper and modulable to the number of players (have a problem with syncvar first to resolve)
 
         int i = 0;
         secrets[0].GetComponent<Secret>().shared = true;
         secrets[1].GetComponent<Secret>().shared = true;
         secrets[6].GetComponent<Secret>().shared = true;
         List<GameObject> tmpSecrets = secrets;
         tmpSecrets.Insert(5, secrets[0]);
         tmpSecrets.Insert(11, secrets[1]);
         tmpSecrets.Insert(10, secrets[6]);
         foreach (Player p in team1.GetComponent<Team>().players)
         {
             Debug.Log(p.deviceName);
             Debug.Log(tmpSecrets[i].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 1].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 2].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 3].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 4].GetComponent<Secret>().netId);
             p.secrets.Shuffle();
             p.RpcUpdateProfile();
             i++;
         }
 
         i = 15;
         secrets[15].GetComponent<Secret>().shared = true;
         secrets[16].GetComponent<Secret>().shared = true;
         secrets[21].GetComponent<Secret>().shared = true;
         tmpSecrets.Insert(20, secrets[0]);
         tmpSecrets.Insert(26, secrets[1]);
         tmpSecrets.Insert(25, secrets[6]);
         foreach (Player p in team2.GetComponent<Team>().players)
         {
             Debug.Log(p.deviceName);
             Debug.Log(tmpSecrets[i].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 1].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 2].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 3].GetComponent<Secret>().netId);
             p.secrets.Add(tmpSecrets[i + 4].GetComponent<Secret>().netId);
             p.secrets.Shuffle();
             p.RpcUpdateProfile();
             i++;
         }
     }

Can anyone help me ? That'd be great ! Thanks !

Answer 1

OK so I figured out what was the problem !

The definition of my structure was wrong to be used with UNET, that's why it wasn't synchronizing over the network. Below is the correct code, hoping it'd help anyone :

 public static class Structures : object {
 
     public class SyncListNetworkInstanceId : SyncListStruct<NetID> { }
 
     public struct NetID
     {
         public NetworkInstanceId netID;
     }
 }

I changed a bit the core of the function below, but you just need to look at how I add new items to my structure.

     [Server]
     public void DispatchSecrets()
     {
         List<GameObject> tmpListSecrets = secrets.Take(secrets.Count / NUMBER_TEAMS).ToList();
         foreach (GameObject team in teams)
         {
             Team t = team.GetComponent<Team>();
             int numberOfSharedSecrets = t.players.Count == 1 ? 1 : t.players.Count - 1; // DEBUG : 1 to test with one player only (host test)...
             for (int i = 0; i < t.players.Count; i++)
             {
                 Player p = t.players[i];
                 for (int j = 0; j < numberOfSharedSecrets; j++)
                 {
                     Player nextPlayer = t.players[(i + 1) % t.players.Count];
                     Secret secret = tmpListSecrets[0].GetComponent<Secret>();
                     secrets.Find(s => s.GetComponent<Secret>().Equals(secret)).GetComponent<Secret>().shared = true;
                     p.secrets.Add(new Structures.NetID() { netID = secret.netId });
                     if (!nextPlayer.playerName.Equals(p.playerName))
                     {
                         nextPlayer.secrets.Add(new Structures.NetID() { netID = secret.netId });
                     }
                     tmpListSecrets.Remove(secret.gameObject);
                 }
                 int tmp = 5 - p.secrets.Count;
                 for (int j = 0; j < tmp; j++)
                 {
                     Secret secret = tmpListSecrets[0].GetComponent<Secret>();
                     p.secrets.Add(new Structures.NetID() { netID = secret.netId });
                     tmpListSecrets.Remove(secret.gameObject);
                 }
                 p.secrets.Shuffle();
                 p.RpcUpdateProfile();
             }
         }
     }

UNET SyncVar on a NetworkInstanceId SyncList structure not updating across network

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