How to Serialize Interfaces in Unity (Drag and Drop Support)

Serializable Interfaces in Unity give you the ability to drag, drop, and serialize objects that implement a specific interface in Inspector fields, enabling powerful, type-safe assignments. Using a custom attribute, you can restrict assignments to components implementing a particular interface. Or use an open generic type that supports serialization of references, enforcing both base types and interface types. This setup leverages custom editor tooling and reflection for seamless Inspector integration, enhanced validation, and intuitive drag-and-drop functionality. Want to support me? 😀 Buy me a coffee! https://ko-fi.com/adammyhre 🔔 Subscribe for more Unity Tutorials https://youtube.com/@git-amend Discord: https://discord.gg/FDRZGQBBUC #unity3d #gamedev #indiedev ▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬ 0:00 Require Interface Attribute and Interface Reference 6:38 Interface Reference Drawer 12:38 Adding Label Hints 16:12 Require Interface Drawer *Source code:* https://github.com/adammyhre/Unity-Serialized-Interface More Useful Code: https://github.com/adammyhre?tab=repositories Unity Utility Library: https://github.com/adammyhre/Unity-Utils Lock Inspector Hotkey: https://gist.github.com/adammyhre/4754f731a93bf1cab0d1385ccfa23642 Assets Shown In This Video (Affiliate Links) Odin - https://assetstore.unity.com/packages/tools/utilities/odin-inspector-and-serializer-89041?aid=1101lw3sv Odin Validator - https://assetstore.unity.com/packages/tools/utilities/odin-validator-227861?aid=1101lw3sv Hot Reload: https://assetstore.unity.com/packages/tools/utilities/hot-reload-edit-code-without-compiling-254358?aid=1101lw3sv Hierarchy Icons: https://assetstore.unity.com/packages/tools/utilities/better-hierarchy-272963?aid=1101lw3sv Better Transform: https://assetstore.unity.com/packages/tools/utilities/better-transform-size-notes-global-local-workspace-child-parent--276554?aid=1101lw3sv Better Mesh Filter: https://assetstore.unity.com/packages/tools/utilities/better-mesh-filter-266489?aid=1101lw3sv Editor Console Pro: https://assetstore.unity.com/packages/tools/utilities/editor-console-pro-11889?aid=1101lw3sv Any Object Finder: https://assetstore.unity.com/packages/tools/utilities/any-object-finder-286455?aid=1101lw3sv *Follow me!* https://linktr.ee/gitamend