Signed-off-by: TRAfoer <lhf190@outlook.com>

Assets/Scripts/Editor Tools/FastNoteTracker/FaseNoteTracker.cs

@@ -36,18 +36,139 @@ namespace ichni.RhythmGame // [修复] 修正命名空间首字母大写，符
             set
             {
                 _isEnabled = value;
+                foreach (var preview in NotePreviews.Values)
+                {
+                    if (preview != null) preview.gameObject.SetActive(showNotePreview);
+                }
+
                 Refresh();
             }
         }
-
+        public bool showNotePreview
+        {
+            get => _showNotePreview;
+            set
+            {
+                _showNotePreview = value;
+                foreach (var preview in NotePreviews.Values)
+                {
+                    if (preview != null) preview.gameObject.SetActive(showNotePreview);
+                }
+                Refresh();
+            }
+        }
+        private bool _showNotePreview = false;
         BaseElement_BM IBeChangeInExport.MatchingExportElement { get => null; set { } }
 
+        // NotePreview和TextHint的容器
+        private Transform _previewRoot;
+        private Transform PreviewRoot
+        {
+            get
+            {
+                if (_previewRoot == null)
+                {
+                    var obj = GameObject.Find("NotePreviewRoot");
+                    if (obj == null)
+                    {
+                        obj = new GameObject("NotePreviewRoot");
+                        obj.transform.SetParent(this.transform, false);
+                    }
+                    _previewRoot = obj.transform;
+                }
+                return _previewRoot;
+            }
+        }
+
+        private class NotePreviewData : MonoBehaviour
+        {
+            public float noteTime;
+            public NoteBase noteBase1;
+            public LineRenderer lineRenderer;
+
+            public void Initialize(float time, NoteBase noteBase)
+            {
+                noteTime = time;
+                noteBase1 = noteBase;
+                lineRenderer = this.gameObject.AddComponent<LineRenderer>();
+                lineRenderer.useWorldSpace = false;
+                lineRenderer.positionCount = 2;
+                lineRenderer.startWidth = 1f;
+                lineRenderer.endWidth = 0f;
+                lineRenderer.material = EditorManager.instance.basePrefabs.defaultTrackMaterial;
+                Color color = new Color(1f, 0.5f, 0f, 0.8f);
+                DOTween.ToAlpha(() => color, c => color = c, 1f, 1f).SetEase(Ease.InOutQuad).OnUpdate(() =>
+                {
+                    lineRenderer.startColor = lineRenderer.endColor = color;
+                });
+
+            }
+            public void Refresh(SplineComputer spline, TrackTimeSubmoduleMovable trackTime, float horizonWidth)
+            {
+                float trackPercent = Mathf.Clamp01(trackTime.GetTrackPercentRaw(noteTime));
+                SplineSample sample = spline.Evaluate(trackPercent);
+                Vector3 sideOffset = sample.rotation * (noteBase1.noteVisual != null ? noteBase1.noteVisual.transformSubmodule.originalPosition : Vector3.zero);
+                Vector3 worldPos = sample.position;
+
+                Vector3 localPos = this.transform.parent.InverseTransformPoint(worldPos);
+                Vector3 localOffset = this.transform.parent.InverseTransformVector(Vector3.up);
+                lineRenderer.SetPosition(0, localPos + sideOffset);
+                lineRenderer.SetPosition(1, localPos + localOffset + sideOffset);
+            }
+            void OnDestroy() { }
+        }
+        // NotePreviews字典改为以时间为key
+        private Dictionary<float, NotePreviewData> NotePreviews = new Dictionary<float, NotePreviewData>();
         public List<LineRenderer> BeatLines = new List<LineRenderer>();
         public List<float> Beats = new List<float>();
         public override void Refresh()
         {
             base.Refresh();
             UpdateBeatLine();
+            RefreshNotePreviews();
+        }
+
+        // 刷新NotePreviews，按时间生成预览
+        private void RefreshNotePreviews()
+        {
+            if (TrackedTrack == null) return;
+            if (!_isEnabled) return;
+            if (!showNotePreview) return;
+            var notes = TrackedTrack.childElementList.OfType<NoteBase>().ToList();
+            var times = notes.Select(n => n.exactJudgeTime).ToList();
+            // 移除已不存在的note时间
+            var toRemove = NotePreviews.Keys.Except(times).ToList();
+            foreach (var t in toRemove)
+            {
+                if (NotePreviews[t] != null) Destroy(NotePreviews[t].gameObject);
+                NotePreviews.Remove(t);
+            }
+            // 添加新note时间
+            foreach (var n in notes)
+            {
+                float time = n.exactJudgeTime;
+                if (!NotePreviews.ContainsKey(time))
+                {
+                    var obj = new GameObject($"NotePreview_{n.elementName}_{time}");
+                    obj.transform.SetParent(PreviewRoot, false);
+                    var preview = obj.AddComponent<NotePreviewData>();
+                    preview.Initialize(time, n);
+                    NotePreviews[time] = preview;
+                }
+            }
+            // 刷新所有预览
+            SplineComputer spline = TrackedTrack.trackPathSubmodule.path;
+            var trackTime = TrackedTrack.trackTimeSubmodule as TrackTimeSubmoduleMovable;
+            foreach (var preview in NotePreviews.Values)
+            {
+                if (preview != null)
+                {
+                    Observable.NextFrame().Subscribe(_ =>
+                    {
+                        preview.Refresh(spline, trackTime, horizonWidth);
+                    });
+                }
+            }
         }
 
         public int BeatDiver = 1; // [建议] 变量名修正为 BeatDiver (原本是 Beatdiver)
@@ -219,6 +340,7 @@ namespace ichni.RhythmGame // [修复] 修正命名空间首字母大写，符
             if (ForceRefresh)
             {
                 AdjustBeatLine();
+                RefreshNotePreviews();
             }
 
             if (InputListener.instance.isPointerOverUI) return;
@@ -229,6 +351,7 @@ namespace ichni.RhythmGame // [修复] 修正命名空间首字母大写，符
             }
 
         }
+
         public void CastRay()
         {
             if (EditorManager.instance.cameraManager.currentCamera == null) return;
@@ -372,12 +495,9 @@ namespace ichni.RhythmGame // [修复] 修正命名空间首字母大写，符
         {
             // 1. 创建一个新的 GameObject
             string content = noteBase.elementName;
-            Vector3 worldPos = noteBase.noteVisual.transform.position;
             GameObject hintObj = new GameObject("NoteHint_" + content);
-            hintObj.transform.position = worldPos;
-
+            hintObj.transform.SetParent(PreviewRoot, false); // 统一放到PreviewRoot下
             // 2. 添加 TextMeshPro 组件 (注意是 TextMeshPro，不是 TextMeshProUGUI)
-            // 因为我们在 3D 空间生成，所以使用非 UI 版本
             TextMeshPro text = hintObj.AddComponent<TextMeshPro>();
             // 3. 配置文字属性
             text.text = content;
@@ -391,13 +511,25 @@ namespace ichni.RhythmGame // [修复] 修正命名空间首字母大写，符
             // 5. 动画效果：向上移动 1 个单位，并同时淡出
             // 1 秒后执行
             hintObj.transform.DOScale(Vector3.one * 1.2f, 1f).SetEase(Ease.OutBack).From(Vector3.zero);
-            hintObj.transform.DOMoveY(worldPos.y + 1f, 1f);
+            // 位置同步协程
+            StartCoroutine(SyncHintPosition(hintObj.transform, noteBase));
             text.DOFade(0, 1f).OnComplete(() => Destroy(hintObj));
-            // 7. 让文字始终面向相机 (Billboard 效果)
-            // 如果你的相机视角是固定的，可以直接设置旋转
+            // 让文字始终面向相机 (Billboard 效果)
             hintObj.transform.LookAt(hintObj.transform.position + Camera.main.transform.rotation * Vector3.forward,
                                     EditorManager.instance.cameraManager.currentCamera.transform.rotation * Vector3.up);
         }
+
+        private IEnumerator SyncHintPosition(Transform hint, NoteBase noteBase)
+        {
+            float t = 0f;
+            Vector3 offset = Vector3.up;
+            while (t < 1f && noteBase != null && noteBase.noteVisual != null)
+            {
+                hint.position = noteBase.noteVisual.transform.position + offset;
+                t += Time.deltaTime;
+                yield return null;
+            }
+        }
     }
 
     // 后面的 Inspector 和 Export 代码逻辑暂时不需要大改，只要注意变量名 Beatdiver -> BeatDiver
@@ -419,6 +551,8 @@ namespace ichni.RhythmGame // [修复] 修正命名空间首字母大写，符
             inspector.GenerateInputField(this, sub, "Beat Diver", nameof(BeatDiver));
             inspector.GenerateToggle(this, sub, "Force refresh (cost++)", nameof(ForceRefresh));
             inspector.GenerateInputField(this, sub, "Horizon Width", nameof(horizonWidth));
+            inspector.GenerateToggle(this, sub, "Show Note Preview", nameof(showNotePreview));
+
         }
 
         public static FastNoteTracker GenerateElement(string elementName, Guid id, List<string> tags,