Add Asset Reference Resolving by labels. Add including only ignored tags/labels. Update AssetRefResolver custom editor.

[fitbie]

Currently AssetReferenceResolver use "Ignore by GO tag" logic. It works fine for prefab assets, but there are thousands of non-GO assets, which may need to be ignored. Unity has powerful feature for filtering assets - labels, which can be assigned in the bottom section of asset inspector. So i added ignoredLabels string[] field and implemented filtering logic.

Also, in some cases user may want to include only assets with certain tag/label, instead of ignoring those labels/tags. For this case i added 2 fields includeIgnoredTags/Labels

I tested it for my project, works fine. Of course there will be extra CPU/Memory extra utilization (about 15%), but only when user adds any values to ignoredLabels. IncludeIgnored works via simple XOR and boolean ops.

I'm also suggesting to remove "Tags" logic for reference resolving, and maybe add labels to PrefabReferenceResolver, because labels are the perfect way for asset filtering during EditorTime (where reference resolving is actually happening), also, unlike tags, we can apply any amount of labels to the asset/prefab. But this suggestions are completely under your command, just let me know if you accept it.

[hasanbayatme]

That's awesome, thank you!

Yes, I totally agree with switching over to labels and it makes much more sense, because some other interesting features can be implemented through that, like specifying how a Texture should be serialized from its Label such as png, jpg and so on.

I wonder why I haven't gone that route instead.