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

Assets/Scripts/EditorGame/GameElements/Track/Trail.cs

@@ -20,6 +20,11 @@ namespace Ichni.RhythmGame
         public Gradient gradient;
 
         public TransformSubmodule transformSubmodule { get; set; }
+        float IHaveTrail.visibleTimeLength
+        {
+            get => visibleTimeLength;
+            set => visibleTimeLength = value;
+        }
 
         public static Trail GenerateElement(string name, Guid id, List<string> tags, bool isFirstGenerated,
             GameElement parentElement, float visibleTimeLength, bool isAutoOrient, float widthMultiplier,
@@ -121,11 +126,42 @@ namespace Ichni.RhythmGame
                 }
             }
         }
+        public static void FreezeAllTrails(bool freeze)
+        {
+            foreach (GameElement x in EditorManager.instance.beatmapContainer.gameElementList)
+            {
+                if (x is IHaveTrail t && t != null)
+                {
+                    FreezeTrail(freeze, t);
+                }
+            }
+        }
+        public static void FreezeTrail(bool freeze, IHaveTrail trail)
+        {
+
+
+            if (!freeze)
+            {
+                UnfreezeTrail(trail);
+                return;
+            }
+            trail.trailRenderer.time = Mathf.Infinity; // 使现有轨迹永不消失
+            trail.trailRenderer.emitting = false;      // 停止生成新轨迹点
+        }
+
+        // 解冻尾迹（恢复动态更新）
+        public static void UnfreezeTrail(IHaveTrail trail)
+        {
+            trail.trailRenderer.Clear();               // 清除当前冻结的轨迹
+            trail.trailRenderer.time = trail.visibleTimeLength;   // 恢复原始持续时间
+            trail.trailRenderer.emitting = true;       // 重新开始发射轨迹点
+        }
     }
 
     public interface IHaveTrail
     {
         TrailRenderer trailRenderer { get; set; }
+        float visibleTimeLength { get; set; }
     }
 
     namespace Beatmap