in scene loaded additively, static objects are no longer static (?!?)

Unity Engine
1

I’ve got a bunch of scene content I’m loading at runtime with SceneManager.LoadSceneAsync(sceneName, LoadSceneMode.Additive). This is all scenery, so most of it is marked Static (Everything) in the inspector.

At runtime, I want to know whether an object is static or not, so I check gameObject.isStatic. When testing in the editor, this reports true on the objects I would expect. But at runtime (testing on Oculus Quest, if that matters), it returns false on objects that I know should be static.

What’s going on? Is it impossible for statically-loaded objects to actually be static? Does isStatic simply not work in builds? Is it a Unity bug?

Thanks,

  • Joe
2

Never thought of this question before! But based on this, AND based on its name “Editor Flags”,

I see this blurb:

“Setting StaticEditorFlags at runtime has no effect on these systems.”

Now that’s obvious, but in your case you are reading it… which I imagine is probably just returning false because you’re not in the editor.

3

Here’s a thought: make your own Monobehavior that by its mere presence on a GameObject indicates that it was static.

Now normally that would be a colossal pain to keep “in sync” with the actual static flags, but check this thread here:

You could make a scene processor that automatically adds your MB to GameObjects that are marked static.

Your MB doesn’t even have to have anything in it except a single static method:

public static bool CheckStatic(GameObject go)
{
  return go.GetComponent<JoeStroutsStaticMarkerBehavior>() != null;
}

And use that in your codez.

4

Those are reasonable ideas. But my issue isn’t so much detecting whether objects are in a particular category — I realized another, more direct way to tell that.

My bigger concern at this point is whether these objects are or are not static, performance-wise. As our scene grows, it’s going to be very important that these objects batch for rendering, have efficient mesh collider tests, etc. So the fact that they’re reporting nonstatic worries me.

5

That’s easy: pick one piece of geometry and put a script on it that wiggles it at runtime. If you don’t see it move in the build, it’s static.

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