Modify Animation Track offsets during runtime

Hi,

Timeline doesn't have a way to do this out of the box, although it is an option we have recently been discussing. One way to do this is using the track offsets on the animation track. Here's an example monobehaviour you could try that automatically sets the track offsets to make the timeline play relative to the current positions of the animated objects.

Code (CSharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5. using UnityEngine.Timeline;
6. using UnityEngine.Playables;
7.  
8. [RequireComponent(typeof(PlayableDirector))]
9. public class PlayTimelineRelative : MonoBehaviour
10. {
11.     private PlayableDirector director;
12.  
13.     void Awake()
14.     {
15.         director = GetComponent<PlayableDirector>();
16.     }
17.  
18.     void OnEnable()
19.     {
20.         // if the director is playing, timeline changes won't have an effect
21.         director.Stop();
22.  
23.         var timelineAsset = director.playableAsset as TimelineAsset;
24.         if (timelineAsset == null)
25.             return;
26.  
27.         foreach (var track in timelineAsset.GetOutputTracks())
28.         {
29.             var animTrack = track as AnimationTrack;
30.             // could check for a specifically named track here as well...
31.             if (animTrack == null)
32.                 continue;
33.  
34.             var binding = director.GetGenericBinding(animTrack);
35.             if (binding == null)
36.                 continue;
37.  
38.             // the binding can be an animator or game object with an animator
39.             var animator = binding as Animator;
40.             var gameObject = binding as GameObject;
41.             if (animator == null && gameObject != null)
42.                 animator = gameObject.GetComponent<Animator>();
43.  
44.             if (animator == null)
45.                 continue;
46.  
47.             // turn on the track offsets, and apply the current position
48.             animTrack.applyOffsets = true;
49.             animTrack.position = animator.transform.position;
50.             animTrack.rotation = animator.transform.rotation;
51.         }
52.  
53.         // start the director. This will build the graph with embedded offsets
54.         director.Play();
55.     }
56.  
57.     public void OnDisable()
58.     {
59.         if (director == null)
60.             return;
61.  
62.         // turn off the offsets so the editor resets to 0,0,0
63.         var timelineAsset = director.playableAsset as TimelineAsset;
64.         if (timelineAsset == null)
65.             return;
66.  
67.         foreach (var track in timelineAsset.GetOutputTracks())
68.         {
69.             var animTrack = track as AnimationTrack;
70.             if (animTrack == null)
71.                 continue;
72.  
73.             animTrack.applyOffsets = false;
74.         }
75.  
76.     }
77.  
78. }
79.  

 

Yes, right. You can also just move the parent instead of using the script since Timeline only animates the local position.