How to make a ReorderableList with ScriptableObjects?

nicmarxp · Apr 9, 2019

Hey all!

Just found this neat way to create a ReorderableList of ScriptableObjects with inline editors, that can be of different types, that derive from the same class/SO.

It seems it's not required to have a custom editors for all scriptable objects, but there might be more code than shown in the GIF, especially the ScriptableObjectDrawer which seem to do some magic.

They talked about it in this thread but never posted any code.
https://www.reddit.com/r/Unity3D/comments/7jxzhg/the_greatest_trick_unity_ever_pulled_was/

The author of the GIF explains it like this:

ScriptableObjectDrawer was written by me. It finds any non-abstract child class of ScriptableObject and maps it to a custom drawer inheriting from itself (if one exists), storing in a static dictionary. Then anything that needs a drawer for a ScriptableObject can just pass in the ScriptableObject instance to a Create method which returns an instance of the correct drawer.

The drawer has a reference to the ScriptableObject, but not vice-vera. Only the drawer uses the UnityEngine.Editor namespace, and it's kept in the Editor folder, so it's excluded from builds but provides an easy way to display stuff differently for different items.

I set up this object's editor script so the ReorderableList's add menu automatically populates itself, and so that the list draws each element by calling its respective drawer.
Click to expand...

I'm very new to editor scripting and pretty new to scriptable objects, so I have a hard time convert what's said above to code.

Is there anyone who has done this, or could explain how I would do this? I have Odin Inspector, which is great, but I think I need something else to do this. [InlineEditor] works, but I can't seem to add elements to the list.

I'll gladly pay a few bucks to anyone who can help me, since it would save me a lot of time, that I'd rather spend on making the features of my game, rather than spending days on this..

Thanks!

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How to make a ReorderableList with ScriptableObjects?

nicmarxp