How to execute method in main thread from another threads?

Questions & Answers
1

i see it hard to find any adequately answer on that.

i have a TcpClient that accept data in separate thread and should update gameobject state basing on received data.

first of all i can’t call GameObject.Find(“bla”) from another thread. Well i though it’s not a big problems and tried to use MethodInfo variable pointed on needed function, to execute it like this when received:

method_info.Invoke(this, new object { data }); //for weird reason it executes in current thread (not main)

ok… let’s see then at this.Invoke(“NeededFunction”, 0); //what O_o? i can call it only in main thread? nice invoke

ok… let’s see on delegates… err this does not contain InvokeRequred field and this is already a big problem

omg just how to access gameobjects from another threads?

2

Hi there

The correct approaches for this sort of thing vary depending on the task. You can not simply ‘call a method on another thread’ - you have to ask the other thread to call it.

I have found the most elegant approach in unity is to use the c# lock keyword to control access to a .net queue. I can add ‘events’ , which may be structures or delegates into my queue from a thread. Then on the main thread in an update function I can process the queue.

You can’t access game objects and stuff from other threads - it’s single threaded by design.

  • Chris