added auto-activation when in timeline clip

Author: jasonm-unity

AlembicImporter/Assets/UTJ/Alembic/Scripts/Timeline/AlembicShotAsset.cs

@@ -29,6 +29,9 @@ public class AlembicShotAsset : PlayableAsset, ITimelineClipAsset
         [Tooltip("Portion, in seconds, of the alembic stream used by the shot.")]
         [ReadOnly] public float m_AlembicLength = 0;
 
+        [Tooltip("Auto active/deactivate GameObject on Play/Pause")]
+        [SerializeField] public bool m_AutoActivateTarget = true;
+
         public ClipCaps clipCaps { get { return ClipCaps.None;  } }
 
         public override Playable CreatePlayable(PlayableGraph graph, GameObject owner)
@@ -41,6 +44,7 @@ public override Playable CreatePlayable(PlayableGraph graph, GameObject owner)
             behaviour.m_EndTimeClipOff = m_EndOffset;
             behaviour.m_TimeScale = m_TimeScale;
             behaviour.m_Cycle = m_Cycle;
+            behaviour.m_AutoActivateTarget = m_AutoActivateTarget;
             return playable;
         }
 

AlembicImporter/Assets/UTJ/Alembic/Scripts/Timeline/AlembicShotPlayable.cs

@@ -22,9 +22,12 @@ public AlembicStreamPlayer streamPlayer
             }
         }
 
+        bool m_RestoreState = false;
+        bool m_OrgState;
         public float m_StartTimeOffset;
         public float m_EndTimeClipOff;
         public float m_TimeScale;
+        public bool m_AutoActivateTarget;
         public AlembicPlaybackSettings.CycleType m_Cycle = AlembicPlaybackSettings.CycleType.Hold;
 
         public override void ProcessFrame(Playable playable, FrameData info, object playerData)
@@ -44,6 +47,33 @@ public override void ProcessFrame(Playable playable, FrameData info, object play
 
             streamPlayer.ManualUpdate();
         }
+
+        public override void OnBehaviourPlay(Playable playable, FrameData info)
+        {
+            base.OnBehaviourPlay(playable, info);
+
+            if (streamPlayer == null)
+                return;
+
+            if (m_AutoActivateTarget)
+            {
+                m_RestoreState = true;
+                m_OrgState = streamPlayer.gameObject.activeInHierarchy;
+                streamPlayer.gameObject.SetActive(true);
+            }
+        }
+
+        public override void OnBehaviourPause(Playable playable, FrameData info)
+        {
+            base.OnBehaviourPause(playable, info);
+
+            if (streamPlayer == null)
+                return;
+
+            if( m_AutoActivateTarget && m_RestoreState )
+                streamPlayer.gameObject.SetActive(m_OrgState);
+
+        }
     }
 }