Example of a PlayableBehaviour

DialogueTriggerBehaviour.cs

using Ink.Runtime;
using System;
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Timeline;
using Dialogue;

[Serializable]
public class DialogueTriggerBehaviour : PlayableBehaviour
{
    public TextAsset DialogueInkStoryFile;
    public NPCData StartNPCData;
    public bool JumpToEnd = false;

    private Story story;
    private PlayableGraph graph;
    private Playable thisPlayable;
    private EventHandler dialogueEndHandler;
    private bool began = false;

    public override void OnPlayableCreate(Playable playable)
    {
        graph = playable.GetGraph();
        thisPlayable = playable;
        story = new Story(DialogueInkStoryFile.text);
        began = false;

        dialogueEndHandler = OnDialogueEnd;
    }

    public override void ProcessFrame(Playable playable, FrameData info, object playerData)
    {
        if (story != null && !began)
        {
            if (DialogueUI.instance)
            {
                //Pause without breaking the current animation states. Work around for 2018.2
                graph.GetRootPlayable(0).SetSpeed(0);
                DialogueUI.instance.OnDialogueEnd += dialogueEndHandler;
                DialogueUI.instance.BeginNewDialogueCutscene(story, StartNPCData);
                began = true;
            }
            else
            {
                if (JumpToEnd) JumpToEndofPlayable();
                graph.GetRootPlayable(0).SetSpeed(1);
            }
        }
    }

    public void OnDialogueEnd(object sender, EventArgs args)
    {
        DialogueUI.instance.OnDialogueEnd -= dialogueEndHandler;
        //Unpause
        graph.GetRootPlayable(0).SetSpeed(1);
        if (JumpToEnd) JumpToEndofPlayable();
    }

    private void JumpToEndofPlayable()
    {
        graph.GetRootPlayable(0).SetTime(graph.GetRootPlayable(0).GetTime() + thisPlayable.GetDuration());
    }
}