Inital commit

1 files changed, 310 insertions, 0 deletions

diff --git a/Library/PackageCache/com.unity.timeline@1.2.13/Runtime/TimelinePlayable.cs b/Library/PackageCache/com.unity.timeline@1.2.13/Runtime/TimelinePlayable.cs
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+++ b/Library/PackageCache/com.unity.timeline@1.2.13/Runtime/TimelinePlayable.cs
@@ -0,0 +1,310 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Audio;
+using UnityEngine.Playables;
+
+namespace UnityEngine.Timeline
+{
+    // Generic evaluation callback called after all the clips have been processed
+    internal interface ITimelineEvaluateCallback
+    {
+        void Evaluate();
+    }
+
+
+#if UNITY_EDITOR
+    /// <summary>
+    /// This Rebalancer class ensures that the interval tree structures stays balance regardless of whether the intervals inside change.
+    /// </summary>
+    class IntervalTreeRebalancer
+    {
+        private IntervalTree<RuntimeElement> m_Tree;
+        public IntervalTreeRebalancer(IntervalTree<RuntimeElement> tree)
+        {
+            m_Tree = tree;
+        }
+
+        public bool Rebalance()
+        {
+            m_Tree.UpdateIntervals();
+            return m_Tree.dirty;
+        }
+    }
+#endif
+
+    // The TimelinePlayable Playable
+    // This is the actual runtime playable that gets evaluated as part of a playable graph.
+    // It "compiles" a list of tracks into an IntervalTree of Runtime clips.
+    // At each frame, it advances time, then fetches the "intersection: of various time interval
+    // using the interval tree.
+    // Finally, on each intersecting clip, it will calculate each clips' local time, as well as
+    // blend weight and set them accordingly
+
+
+    /// <summary>
+    /// The root Playable generated by timeline.
+    /// </summary>
+    public class TimelinePlayable : PlayableBehaviour
+    {
+        private IntervalTree<RuntimeElement> m_IntervalTree = new IntervalTree<RuntimeElement>();
+        private List<RuntimeElement> m_ActiveClips = new List<RuntimeElement>();
+        private List<RuntimeElement> m_CurrentListOfActiveClips;
+        private int m_ActiveBit = 0;
+
+        private List<ITimelineEvaluateCallback> m_EvaluateCallbacks = new List<ITimelineEvaluateCallback>();
+
+        private Dictionary<TrackAsset, Playable> m_PlayableCache = new Dictionary<TrackAsset, Playable>();
+
+        internal static bool muteAudioScrubbing = true;
+
+#if UNITY_EDITOR
+        private IntervalTreeRebalancer m_Rebalancer;
+#endif
+        /// <summary>
+        /// Creates an instance of a Timeline
+        /// </summary>
+        /// <param name="graph">The playable graph to inject the timeline.</param>
+        /// <param name="tracks">The list of tracks to compile</param>
+        /// <param name="go">The GameObject that initiated the compilation</param>
+        /// <param name="autoRebalance">In the editor, whether the graph should account for the possibility of changing clip times</param>
+        /// <param name="createOutputs">Whether to create PlayableOutputs in the graph</param>
+        /// <returns>A subgraph with the playable containing a TimelinePlayable behaviour as the root</returns>
+        public static ScriptPlayable<TimelinePlayable> Create(PlayableGraph graph, IEnumerable<TrackAsset> tracks, GameObject go, bool autoRebalance, bool createOutputs)
+        {
+            if (tracks == null)
+                throw new ArgumentNullException("Tracks list is null", "tracks");
+
+            if (go == null)
+                throw new ArgumentNullException("GameObject parameter is null", "go");
+
+            var playable = ScriptPlayable<TimelinePlayable>.Create(graph);
+            playable.SetTraversalMode(PlayableTraversalMode.Passthrough);
+            var sequence = playable.GetBehaviour();
+            sequence.Compile(graph, playable, tracks, go, autoRebalance, createOutputs);
+            return playable;
+        }
+
+        /// <summary>
+        /// Compiles the subgraph of this timeline
+        /// </summary>
+        /// <param name="graph">The playable graph to inject the timeline.</param>
+        /// <param name="timelinePlayable"></param>
+        /// <param name="tracks">The list of tracks to compile</param>
+        /// <param name="go">The GameObject that initiated the compilation</param>
+        /// <param name="autoRebalance">In the editor, whether the graph should account for the possibility of changing clip times</param>
+        /// <param name="createOutputs">Whether to create PlayableOutputs in the graph</param>
+        public void Compile(PlayableGraph graph, Playable timelinePlayable, IEnumerable<TrackAsset> tracks, GameObject go, bool autoRebalance, bool createOutputs)
+        {
+            if (tracks == null)
+                throw new ArgumentNullException("Tracks list is null", "tracks");
+
+            if (go == null)
+                throw new ArgumentNullException("GameObject parameter is null", "go");
+
+            var outputTrackList = new List<TrackAsset>(tracks);
+            var maximumNumberOfIntersections = outputTrackList.Count * 2 + outputTrackList.Count; // worse case: 2 overlapping clips per track + each track
+            m_CurrentListOfActiveClips = new List<RuntimeElement>(maximumNumberOfIntersections);
+            m_ActiveClips = new List<RuntimeElement>(maximumNumberOfIntersections);
+
+            m_EvaluateCallbacks.Clear();
+            m_PlayableCache.Clear();
+
+            CompileTrackList(graph, timelinePlayable, outputTrackList, go, createOutputs);
+
+#if UNITY_EDITOR
+            if (autoRebalance)
+            {
+                m_Rebalancer = new IntervalTreeRebalancer(m_IntervalTree);
+            }
+#endif
+        }
+
+        private void CompileTrackList(PlayableGraph graph, Playable timelinePlayable, IEnumerable<TrackAsset> tracks, GameObject go, bool createOutputs)
+        {
+            foreach (var track in tracks)
+            {
+                if (!track.IsCompilable())
+                    continue;
+
+                if (!m_PlayableCache.ContainsKey(track))
+                {
+                    track.SortClips();
+                    CreateTrackPlayable(graph, timelinePlayable, track, go, createOutputs);
+                }
+            }
+        }
+
+        void CreateTrackOutput(PlayableGraph graph, TrackAsset track, GameObject go, Playable playable, int port)
+        {
+            if (track.isSubTrack)
+                return;
+
+            var bindings = track.outputs;
+            foreach (var binding in bindings)
+            {
+                var playableOutput = binding.CreateOutput(graph);
+                playableOutput.SetReferenceObject(binding.sourceObject);
+                playableOutput.SetSourcePlayable(playable, port);
+                playableOutput.SetWeight(1.0f);
+
+                // only apply this on our animation track
+                if (track as AnimationTrack != null)
+                {
+                    EvaluateWeightsForAnimationPlayableOutput(track, (AnimationPlayableOutput)playableOutput);
+#if UNITY_EDITOR
+                    if (!Application.isPlaying)
+                        EvaluateAnimationPreviewUpdateCallback(track, (AnimationPlayableOutput)playableOutput);
+#endif
+                }
+                if (playableOutput.IsPlayableOutputOfType<AudioPlayableOutput>())
+                    ((AudioPlayableOutput)playableOutput).SetEvaluateOnSeek(!muteAudioScrubbing);
+
+                // If the track is the timeline marker track, assume binding is the PlayableDirector
+                if (track.timelineAsset.markerTrack == track)
+                {
+                    var director = go.GetComponent<PlayableDirector>();
+                    playableOutput.SetUserData(director);
+                    foreach (var c in go.GetComponents<INotificationReceiver>())
+                    {
+                        playableOutput.AddNotificationReceiver(c);
+                    }
+                }
+            }
+        }
+
+        void EvaluateWeightsForAnimationPlayableOutput(TrackAsset track, AnimationPlayableOutput animOutput)
+        {
+            m_EvaluateCallbacks.Add(new AnimationOutputWeightProcessor(animOutput));
+        }
+
+        void EvaluateAnimationPreviewUpdateCallback(TrackAsset track, AnimationPlayableOutput animOutput)
+        {
+            m_EvaluateCallbacks.Add(new AnimationPreviewUpdateCallback(animOutput));
+        }
+
+        private static Playable CreatePlayableGraph(PlayableGraph graph, TrackAsset asset, GameObject go, IntervalTree<RuntimeElement> tree, Playable timelinePlayable)
+        {
+            return asset.CreatePlayableGraph(graph, go, tree, timelinePlayable);
+        }
+
+        private Playable CreateTrackPlayable(PlayableGraph graph, Playable timelinePlayable, TrackAsset track, GameObject go, bool createOutputs)
+        {
+            if (!track.IsCompilable()) // where parents are not compilable (group tracks)
+                return timelinePlayable;
+
+            Playable playable;
+            if (m_PlayableCache.TryGetValue(track, out playable))
+                return playable;
+
+            if (track.name == "root")
+                return timelinePlayable;
+
+            TrackAsset parentActor = track.parent as TrackAsset;
+            var parentPlayable = parentActor != null ? CreateTrackPlayable(graph, timelinePlayable, parentActor, go, createOutputs) : timelinePlayable;
+            var actorPlayable = CreatePlayableGraph(graph, track, go, m_IntervalTree, timelinePlayable);
+            bool connected = false;
+
+            if (!actorPlayable.IsValid())
+            {
+                // if a track says it's compilable, but returns Playable.Null, that can screw up the whole graph.
+                throw new InvalidOperationException(track.name + "(" + track.GetType() + ") did not produce a valid playable. Use the compilable property to indicate whether the track is valid for processing");
+            }
+
+
+            // Special case for animation tracks
+            if (parentPlayable.IsValid() && actorPlayable.IsValid())
+            {
+                int port = parentPlayable.GetInputCount();
+                parentPlayable.SetInputCount(port + 1);
+                connected = graph.Connect(actorPlayable, 0, parentPlayable, port);
+                parentPlayable.SetInputWeight(port, 1.0f);
+            }
+
+            if (createOutputs && connected)
+            {
+                CreateTrackOutput(graph, track, go, parentPlayable, parentPlayable.GetInputCount() - 1);
+            }
+
+            CacheTrack(track, actorPlayable, connected ? (parentPlayable.GetInputCount() - 1) : -1, parentPlayable);
+            return actorPlayable;
+        }
+
+        /// <summary>
+        /// Overridden to handle synchronizing time on the timeline instance.
+        /// </summary>
+        /// <param name="playable">The Playable that owns the current PlayableBehaviour.</param>
+        /// <param name="info">A FrameData structure that contains information about the current frame context.</param>
+        public override void PrepareFrame(Playable playable, FrameData info)
+        {
+#if UNITY_EDITOR
+            if (m_Rebalancer != null)
+                m_Rebalancer.Rebalance();
+#endif
+
+            // force seek if we are being evaluated
+            //  or if our time has jumped. This is used to
+            //  resynchronize
+            Evaluate(playable, info);
+        }
+
+        private void Evaluate(Playable playable, FrameData frameData)
+        {
+            if (m_IntervalTree == null)
+                return;
+
+            double localTime = playable.GetTime();
+            m_ActiveBit = m_ActiveBit == 0 ? 1 : 0;
+
+            m_CurrentListOfActiveClips.Clear();
+            m_IntervalTree.IntersectsWith(DiscreteTime.GetNearestTick(localTime), m_CurrentListOfActiveClips);
+
+            foreach (var c in m_CurrentListOfActiveClips)
+            {
+                c.intervalBit = m_ActiveBit;
+                if (frameData.timeLooped)
+                    c.Reset();
+            }
+
+            // all previously active clips having a different intervalBit flag are not
+            // in the current intersection, therefore are considered becoming disabled at this frame
+            var timelineEnd = playable.GetDuration();
+            foreach (var c in m_ActiveClips)
+            {
+                if (c.intervalBit != m_ActiveBit)
+                {
+                    var clipEnd = (double)DiscreteTime.FromTicks(c.intervalEnd);
+                    var time = frameData.timeLooped ? Math.Min(clipEnd, timelineEnd) : Math.Min(localTime, clipEnd);
+                    c.EvaluateAt(time, frameData);
+                    c.enable = false;
+                }
+            }
+
+            m_ActiveClips.Clear();
+            // case 998642 - don't use m_ActiveClips.AddRange, as in 4.6 .Net scripting it causes GC allocs
+            for (var a = 0; a < m_CurrentListOfActiveClips.Count; a++)
+            {
+                m_CurrentListOfActiveClips[a].EvaluateAt(localTime, frameData);
+                m_ActiveClips.Add(m_CurrentListOfActiveClips[a]);
+            }
+
+            int count = m_EvaluateCallbacks.Count;
+            for (int i = 0; i < count; i++)
+            {
+                m_EvaluateCallbacks[i].Evaluate();
+            }
+        }
+
+        private void CacheTrack(TrackAsset track, Playable playable, int port, Playable parent)
+        {
+            m_PlayableCache[track] = playable;
+        }
+
+        //necessary to build on AOT platforms
+        static void ForAOTCompilationOnly()
+        {
+            new List<IntervalTree<RuntimeElement>.Entry>();
+        }
+    }
+}