LiteComponent

How to install

Add in Packages/manifest.json to dependencies:

"com.danand.litecomponent": "https://github.com/Danand/LiteComponent.git#0.1.0-package-unity"

How to use

Just add attribute LiteComponent to interface-typed field for drawing implementations dropdown and selected implementation's fields in inspector:

[SerializeReference]
[LiteComponent]
public ICustomBehaviour behaviour;

Notice that Unity 2019.3 is required because of using SerializeReference for abstract types serialization.

Mark every behaviour implementation as Serializable:

[Serializable]
public class ICustomBehaviourImpl : ICustomBehaviour { /* ... */ }