Instantiate an object outside main thread

Unity Engine
1

Basically, that’s all you need to know. I want to find out if there’s an elegant way of doing it

2

Nope. Awake, Start, Update, etc.

These are the functions that run your code. There’s no way to run code outside of these main functions. I don’t see why you would want to however, perhaps with more details we could solve your problem.

3

I’ve got an open TCP
connection going on in that other thread and I have to create an Instance of a an object according to the information in a message completely independently from the Update(). I tried putting a timeout on Recieve() in the main thread but it won’t work.

4

Try coroutines, they can wait or progress your code at any point when needed.

5

I have implemented a TCP pipeline, that seems to do exactly what you are trying to do. I receive information about the creation of GameObjects with the help of json serialized scene graphs. My pipeline works as follows:

I.) send scene description over TCP connection
II.) threaded client handler instanced by the server receives message outside main thread
III.) Event sends message to JsonParser which queues it inside a buffer
IV.) inside Update() function of the JsonParser, I parse and create GameObjects based on the stuff stored in the buffer
(after reading, I obviously remove the parsed messages from the buffer)

I guess, there would be other designs that would also work. The trick always seems to be storing asynchronious gathered information and using it when you are inside the main thread next.

I Hope that helps!

6 
    public void SendMessageOnMainthread( string message )
    {
        actionQueue.Enqueue(() =>
        {
            SendMessage(message);
        } );
    }

    void Update()
    {
        if (actionQueue.Count > 0)
        {
            actionQueue.Dequeue()();
        }
    }
7

I use MQTT protocol. But I can’t instantiate object outside main thread.

8

From your outside thread, tell the main thread to instantiate the object. Since .net 4.x and later C# language support was added, I prefer using a ConcurrentQueue for this type of thing.