基础内容

必要插件安装
缓动曲线和动画基础
ElementFolder，Track与其次级模块，PathNode重构

Assets/Scripts/GameElements/Track/TrackSubmodules/TrackTimeSubmodule.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Ichni.RhythmGame
+{
+    public class TrackTimeSubmodule : TrackSubmodule
+    {
+        public float headPercent, tailPercent;
+    }
+    
+    public class TrackTimeSubmoduleMovable : TrackTimeSubmodule
+    {
+        public float trackStartTime;
+        public float trackEndTime;
+        public float trackTotalTime;
+        public float visibleTrackTimeLength;
+        public AnimationCurveType animationCurveType;
+        
+        public void NewInitialize(Track track, float trackStartTime, float trackEndTime,
+            float visibleTrackTimeLength, AnimationCurveType animationCurveType)
+        {
+            this.track = track;
+            this.track.trackTimeSubmodule = this;
+            this.trackStartTime = trackStartTime;
+            this.trackEndTime = trackEndTime;
+            this.trackTotalTime = trackEndTime - trackStartTime;
+            this.visibleTrackTimeLength = visibleTrackTimeLength;
+            this.animationCurveType = animationCurveType;
+            track.timeDurationSubmodule.startTime = trackStartTime;
+            track.timeDurationSubmodule.endTime = trackEndTime + visibleTrackTimeLength;
+        }
+
+        public void UpdateTrackPart()
+        {
+            float songTime = EditorManager.instance.songModule.songTime;
+            
+            headPercent = GetTrackPercent(songTime);
+            tailPercent = GetTrackPercent(songTime - visibleTrackTimeLength);
+                
+            Debug.Log("Head: " + headPercent + " Tail: " + tailPercent);
+                
+            if (track.trackRendererSubmodule != null)
+            {
+                track.trackRendererSubmodule.meshGenerator.clipFrom = tailPercent;
+                track.trackRendererSubmodule.meshGenerator.clipTo = headPercent;
+            }
+        }
+        
+        private float GetTrackPercent(float songTimeInTime)
+        {
+            float per = AnimationCurveEvaluator.Evaluate(animationCurveType, (songTimeInTime - trackStartTime) / trackTotalTime);
+            return Mathf.Clamp01(per);
+        }
+    }
+    
+    public class TrackTimeSubmoduleStatic : TrackTimeSubmodule
+    {
+        public float trackTotalTime;
+        public AnimationCurveType animationCurveType;
+
+        public void NewInitialize(Track track, float trackTotalTime,  AnimationCurveType animationCurveType)
+        {
+            this.track = track;
+            this.track.trackTimeSubmodule = this;
+            this.trackTotalTime = trackTotalTime;
+            this.animationCurveType = animationCurveType;
+            this.headPercent = 0;
+            this.tailPercent = 1;
+            track.timeDurationSubmodule.startTime = 0;
+            track.timeDurationSubmodule.endTime = 0;
+            //timeDurationSubmodule 根据下辖Note的时间来设置
+        }
+    }
+
+}