Question How do I copy a scene through script, including its LightingDataAsset?

I want to copy and modify a scene via script, including its LightingDataAsset.
However, the copied LightingDataAsset references the source scene.
Opening the LightingDataAsset through AssetDatabase, I found that there was no Scene property on it.
https://docs.unity3d.com/ScriptReference/LightingDataAsset.html
But Inspect has the Scene property above it.
I can manually modify the Scene reference.

Is there any way I can modify it via script?

 

Some tertiary googling tells me the lighting data asset is completely black boxed API wise: https://forum.unity.com/threads/lighting-data-asset-was-a-mistake.547591/

Radio silence from Unity it seems on this one. Looks like there's some solutions in the post, but in the end you may need to resort to reflection of editing the asset JSON directly.

 

The only way I've modified scenes via script is to load them, change them, then write them out... pretty sure this is the only way that works. This class is likely your friend:

https://docs.unity3d.com/ScriptReference/SceneManagement.EditorSceneManager.html

But now that I see Spiney's post I actually don't see a way to reconnect a cloned LightingDataAsset to the scene.

Perhaps if you just Instantiate<T>()-clone the LightingDataAsset and write it to the asset database as a fresh asset, then ransack the Scene file (via reading the lines of text from it on disk) for the GUID of the old LightingDataAsset and replace it with the new GUID of the clone?

After manipulating the Scene asset like this you'd need an refresh call to the asset database.

I've not played much with the LightingDataAsset obviously.

 

I believe it's the other way around. The scene has an Object called LightmapSettings that inside has a serialized field called m_LightingDataAsset. You can see this by opening the scene in a text editor. I've not looked into how to use this information; I imagine it would involve some reflection. I hope this helps, though .

 

https://forum.unity.com/threads/lighting-data-asset-was-a-mistake.547591/#post-8793973

Thank you very much, this is a great reference!
Now I can do it~

 

Thank you very much for your help~

 

Thank you very much for your help~