FishNet RPC from a 3D UI that is not a networked object

Unity Engine
,
1

I’m new to fishnet and trying to get things going. I already have client and server running and can spawn items on the server. But in my 3D VR application I have a 3D UI that is local only. In 1P mode when you press a button it instantiates an object for you. I was trying to recreate that with RPCs, but that doesn’t seem to work because my 3D button is not a networkobject. So everying comes back null when I try to make the call. I tried referencing the network manager that lives on my gamemanager but that can’t find the remote call. Is this even possible or do I have to make my UI some kind of shared object? I did try just attaching the network object to it but that made it invisible (I assume because it was not spawned by the server). Thank you.

2

Hi there, you can use Broadcasts to send messages from non network objects. Or you could have a single network object to send you rpcs from, it doesn’t have to be on the UI game object. It can even be a global object.

3

Alright I’m trying this but the message from client to server doesn’t come through. Not sure yet how do dig through and debug this but I’m looking. Did I miss something? Client and server are connected (my client sees a test spawn I do at startup).

On the client I have:

public class Vend : NetworkBehaviour
{
public GameObject VendingMachine;
public GameObject itemPrefab; // Reference to the prefab
private GameObject padObject; // The PAD object on which the item will be placed

public struct VendBroadcast : IBroadcast
{
    public string prefabName;
    public Vector3 padPos;
}


Debug.Log("Pad name: " + itemPrefab.name + " Position: " + padObject.transform.position);

VendBroadcast msg = new VendBroadcast()
{
    prefabName = itemPrefab.name,
    padPos = padObject.transform.position
};

InstanceFinder.ClientManager.Broadcast(msg);

and on the server side:

private void OnVendRequest(NetworkConnection conn, VendBroadcast msg, Channel channel)
{
Debug.LogError($“Vend Request Received ‘{msg.prefabName}’”);
// Check if the item name exists in the prefab dictionary
if (prefabDictionary.TryGetValue(msg.prefabName, out GameObject itemPrefab))
{
// Instantiate the object on the server
GameObject vendedItem = Instantiate(itemPrefab, msg.padPos, Quaternion.identity);
NetworkObject networkObject = vendedItem.GetComponent();

    if (networkObject != null)
    {
        // Spawn the object on all clients
        ServerManager.Spawn(networkObject);

        // Notify the specific client that requested the spawn so it can adjust the object
        //TargetAdjustClientObject(conn, networkObject.ObjectId);
    }
}
else
{
    Debug.LogError($"Item '{msg.prefabName}' not found in the prefab dictionary.");
}

}

private void OnEnable()
{
InstanceFinder.ServerManager.RegisterBroadcast(OnVendRequest);
}

private void OnDisable()
{
InstanceFinder.ServerManager.UnregisterBroadcast(OnVendRequest);
}