Initial Commit

Library/PackageCache/com.unity.timeline@1.5.4/Runtime/Evaluation/ScheduleRuntimeClip.cs

@@ -0,0 +1,116 @@
+using System;
+using UnityEngine;
+using UnityEngine.Audio;
+using UnityEngine.Playables;
+
+namespace UnityEngine.Timeline
+{
+    // Special runtime clip implementation that handles playables that use a scheduling system
+    //  such as Audio
+    internal class ScheduleRuntimeClip : RuntimeClipBase
+    {
+        private TimelineClip m_Clip;
+        private Playable m_Playable;
+        private Playable m_ParentMixer;
+        private double m_StartDelay;
+        private double m_FinishTail;
+        private bool m_Started = false;
+
+        // represents the start point when we want to start getting updated
+        public override double start
+        {
+            get { return Math.Max(0, m_Clip.start - m_StartDelay); }
+        }
+
+        public override double duration
+        {
+            get { return m_Clip.duration + m_FinishTail + m_Clip.start - start; }
+        }
+
+        public void SetTime(double time)
+        {
+            m_Playable.SetTime(time);
+        }
+
+        public TimelineClip clip { get { return m_Clip; } }
+        public Playable mixer { get { return m_ParentMixer; } }
+        public Playable playable { get { return m_Playable; } }
+
+        public ScheduleRuntimeClip(TimelineClip clip, Playable clipPlayable,
+                                   Playable parentMixer, double startDelay = 0.2, double finishTail = 0.1)
+        {
+            Create(clip, clipPlayable, parentMixer, startDelay, finishTail);
+        }
+
+        private void Create(TimelineClip clip, Playable clipPlayable, Playable parentMixer,
+            double startDelay, double finishTail)
+        {
+            m_Clip = clip;
+            m_Playable = clipPlayable;
+            m_ParentMixer = parentMixer;
+            m_StartDelay = startDelay;
+            m_FinishTail = finishTail;
+            clipPlayable.Pause();
+        }
+
+        public override bool enable
+        {
+            set
+            {
+                if (value && m_Playable.GetPlayState() != PlayState.Playing)
+                {
+                    m_Playable.Play();
+                }
+                else if (!value && m_Playable.GetPlayState() != PlayState.Paused)
+                {
+                    m_Playable.Pause();
+                    if (m_ParentMixer.IsValid())
+                        m_ParentMixer.SetInputWeight(m_Playable, 0.0f);
+                }
+
+                m_Started &= value;
+            }
+        }
+
+        public override void EvaluateAt(double localTime, FrameData frameData)
+        {
+            if (frameData.timeHeld)
+            {
+                enable = false;
+                return;
+            }
+
+
+            bool forceSeek = frameData.seekOccurred || frameData.timeLooped || frameData.evaluationType == FrameData.EvaluationType.Evaluate;
+
+            // If we are in the tail region of the clip, then dont do anything
+            if (localTime > start + duration - m_FinishTail)
+                return;
+
+            // this may set the weight to 1 in a delay, but it will avoid missing the start
+            float weight = clip.EvaluateMixIn(localTime) * clip.EvaluateMixOut(localTime);
+            if (mixer.IsValid())
+                mixer.SetInputWeight(playable, weight);
+
+            // localTime of the sequence to localtime of the clip
+            if (!m_Started || forceSeek)
+            {
+                // accounts for clip in and speed
+                double clipTime = clip.ToLocalTime(Math.Max(localTime, clip.start));
+                // multiply by the time scale so the delay is local to the clip
+                //  Audio will rescale based on it's effective time scale (which includes the parent)
+                double startDelay = Math.Max(clip.start - localTime, 0) * clip.timeScale;
+                double durationLocal = m_Clip.duration * clip.timeScale;
+                if (m_Playable.IsPlayableOfType<AudioClipPlayable>())
+                    ((AudioClipPlayable)m_Playable).Seek(clipTime, startDelay, durationLocal);
+
+                m_Started = true;
+            }
+        }
+
+        public override void DisableAt(double localTime, double rootDuration, FrameData frameData)
+        {
+            enable = false;
+        }
+    }
+}