# ScriptPlayable and PlayableBehaviour

> Describes the ScriptPlayable<> object, the PlayableBehaviour custom behavior and how to use them together to create custom playables.

Use the `ScriptPlayable<>` object and the `PlayableBehaviour` custom behavior to create custom playables.

To create your own custom playable, inherit from the `PlayableBehaviour` base class:

```lang-cs
public class MyCustomPlayableBehaviour : PlayableBehaviour
{
    // Implementation of the custom playable behaviour
    // Override PlayableBehaviour methods as needed
}
```

To use a `PlayableBehaviour` as a custom playable, you must wrap it within a `ScriptPlayable<>` object. If you don’t have an instance of your custom playable, use the following code to create a `ScriptPlayable`:

```lang-cs
ScriptPlayable<MyCustomPlayableBehaviour>.Create(playableGraph);
```

If you have an instance of your custom playable, use the following code to wrap the instance in a `ScriptPlayable<>` object:

```lang-cs
MyCustomPlayableBehaviour myPlayable = new MyCustomPlayableBehaviour();
ScriptPlayable<MyCustomPlayableBehaviour>.Create(playableGraph, myPlayable);
```

This clones the instance and assigns the clone to the `ScriptPlayable` object. In this example, use the `myPlayable` public property in the Inspector window to configure a different behaviour for each instance of your script.

To retrieve the PlayableBehaviour object from the ScriptPlayable object, use the `ScriptPlayable<T> .GetBehaviour()` method.

## Additional resources

* [Create a custom playable](/engine/6000.3/manual/animation-section/animation-mecanim/playables/examples/ex-custom-playable.md)
* [PlayableBehaviour base class](/engine/6000.3/script-reference/unityengine/playables/playablebehaviour.md)
* [ScriptPlayable struct](/engine/6000.3/script-reference/unityengine/playables/scriptplayable1.md)