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A wrapper that allows you to serialize interfaces. Both UnityEngine.Object and regular object implementers work!

1. The package is available on theopenupm registry. You can install it viaopenupm-cli.

openupm add net.tnrd.serializableinterface

2. Installing through aUnity Package created by thePackage Installer Creator fromNeedle

Usage is pretty easy and straightforward. Assuming you have the following interface

publicinterfaceIMyInterface{voidGreet();}

You can add it to a behaviour like so

usingTNRD;usingUnityEngine;publicclassMyBehaviour:MonoBehaviour{[SerializeField]privateSerializableInterface<IMyInterface>mySerializableInterface;privatevoidAwake(){mySerializableInterface.Value.Greet();}}

Back in the Unity inspector it will look like this

And when you click on the object selector button you will be shown a dropdown window with all possible options like this

As you can see you can select items from multiple locations:

• Assets (Scriptable Objects and Prefabs that implement said interface)
• Classes (custom classes that implement said interface)
• Scene (objects in the scene that implement said interface)

For the sake of example for the image above I have created some simple implementations

usingUnityEngine;publicclassMyComponent:MonoBehaviour,IMyInterface{/// <inheritdoc />publicvoidGreet(){Debug.Log("Hello, World! I'm MyComponent");}}

usingUnityEngine;publicclassMyPoco:IMyInterface{/// <inheritdoc />publicvoidGreet(){Debug.Log("Hello, World! I'm MyPoco");}}

usingUnityEngine;[CreateAssetMenu(menuName="MyScriptable")]publicclassMyScriptable:ScriptableObject,IMyInterface{/// <inheritdoc />publicvoidGreet(){Debug.Log("Hello, World! I'm MyScriptable");}}

Serializable Interface is a small and open-source utility that I hope helps other people. It is by no means necessary but if you feel generous you can support me by donating.

Pull requests are welcomed. Please feel free to fix any issues you find, or add new features.