Something a lot of newer developers don’t spend any time on is improving their workflow. Learn how you can write custom property drawers in UI Toolkit to improve your workflow when dealing with complex object relationships in the Editor!
Featuring @samyam ‘s « Who Me! » 
UI Toolkit is the new UI system that takes a lot of guidance from web-based development. It’s the recommended UI System to use starting with Unity 2022 for editor scripting! With the upcoming LTS release of Unity 2022, this is a great time to start learning this new system.
In the Gun Scriptable Object Series – https://www.youtube.com/watch?v=E-vIMamyORg&list=PLllNmP7eq6TQJjgKJ6FKcNFfRREe_L6to we’ve already created a Gun Scriptable Object that has references to several other Scriptable Objects. That is a great separation of concerns, but in the Unity Editor it’s a big pain to deal with these configurations. In this video I show you the implementation for a custom property drawer for the Shoot Config that allows us to easily create Scriptable Objects and edit the configuration for the Shoot Config, all within the Gun Scriptable Object inspector. This saves a lot of time and makes it much more clear what the configuration of a particular gun is!
Looking for the Odin Inspector? https://assetstore.unity.com/packages/tools/utilities/odin-inspector-and-serializer-89041?aid=1101l9QvC
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As always, all code from this video is available on GitHub: https://github.com/llamacademy/scriptable-object-based-guns/tree/ui-toolkit-editor
Resources:
UI Toolkit – https://docs.unity3d.com/2022.2/Documentation/Manual/UIElements.html
UI Toolkit Custom Inspector – https://docs.unity3d.com/2022.2/Documentation/Manual/UIE-HowTo-CreateCustomInspector.html
Serialized Objects – https://docs.unity3d.com/ScriptReference/SerializedObject.html
Serialized Properties – https://docs.unity3d.com/ScriptReference/SerializedProperty.html
Property Drawer – https://docs.unity3d.com/ScriptReference/PropertyDrawer.html
USS – https://docs.unity3d.com/2022.2/Documentation/Manual/UIE-USS.html
Visual Element – https://docs.unity3d.com/ScriptReference/UIElements.VisualElement.html
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Most tutorials come from knowledge gained making https://survival.llama.software Llama Survival – a top-down zombie survival shooter for Android and iOS.
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Chapters:
00:00 Why Custom Inspectors
03:12 Property Drawers
04:24 Important Editor Information
04:50 Provided Control Types
05:19 What We’re Going to Look At
05:52 The Custom Property Drawer
14:19 Closing Thoughts & Support LlamAcademy
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