Restarting scene on timer

Questions
1

Hi everybody!

I’m trying to make an AI project with evolutional algorithm
I have to do the following:

  1. I start the scene
  2. start NN algorithm, and it works somehow in the scene
  3. collect the results
  4. do something, and start the 1st step

And I need to restart it on timer.

I didn’t find ready-made solution to my problem. I’ve tried the folowing idea:

var scene;

scene_Func = function(){
code, generating the scene
}

some_Func = function(){
scene_Func();
scene.dispose();
scene = null;
}

window.addEventListener(‘DOMContentLoaded’, setInterval(some_Func, 5000) )

This could work fine, but, every next time I restart the scene, everything starts working slower and slower.

If this solution is wrong, could you please help me how to do it properly.

P.S. Sorry for my bad english

2

if correctly disposing the scene and recreating it right after there shouldn’t be any degrade in speed/performance.

It is hard to say what is done wrong, as we only see pseudo-code and cannot reproduce this.
Please create a playground or show us a working example.

Also - why don’t you leave the scene as it is, but reset its meshes?

scene.meshes.forEach(m=>m.dispose());
generateMeshesForScene();
3

I’ve created playgroung

https://playground.babylonjs.com/#20D83J

4

there you go - https://playground.babylonjs.com/#20D83J#4 :slight_smile:

If you have any questions, let me know

In general - the playground should be structured in a specific way in order to work. What I do is create the scene once, but clear the meshes and recreate them every 5 seconds using the interval.

Also notice that I am clearing the interval when the scene is disposed, which is very important

5

Thank you very much for your answer!
But it seems, that some meshes duplicate

image
image690×574 62.9 KB

What can be done with it?

6

clear the meshes array :slight_smile:

https://playground.babylonjs.com/#20D83J#6

1 Like
7

Thank you very much!
I don’t really understand, how is it working, but I’ll try to get into it :sweat_smile:

8

the idea is that the entire mesh creation is encapsulated in a single function, and the scene first clears all of its meshes and then creates them.

This is a very naive approach, without understanding the usecase. I guess there could be a better way (probably with disposing only specific meshes) but this is up to you

1 Like