Implements Unity’s PlayableBehaviour interface and is responsible for rendering data from PatActor_PlayableAsset on the associated PatActor_AssetTrack.
A PlayableAsset will have a PlayableBehaviour attached to it.
assetPath: Path to the asset to load. This is automatically set during the associated PatActor_PlayableAsset’s creation.
patTrackRenderer: The rendering object used by the asset when it’s active. Set by the PatActor_ClipMixer.
preloadTime: Amount of time in seconds specifying how much earlier to load a PatAsset that will be played.