性能优化：MovableTrack

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

Assets/Scripts/Game/GameElements/Track/TrackSubmodules/TrackRendererSubmodule/TrackRendererSubmodule.cs

@@ -24,6 +24,7 @@ namespace Ichni.RhythmGame
         public bool zWrite;
         public Vector2 uvScale;
         public Vector2 uvOffset;
+        private bool requiresMeshRebuild;
         #endregion
 
         #region [初始化与防御机制] Initialization & Defense
@@ -72,17 +73,44 @@ namespace Ichni.RhythmGame
         {
             if (meshGenerator == null) return;
 
+            bool colorChanged = false;
             if (meshGenerator.color != color)
             {
                 meshGenerator.color = color;
+                colorChanged = true;
             }
 
-            if (forceImmediateRebuild && track.trackTimeSubmodule is not TrackTimeSubmoduleMovable)
+            if (track.trackTimeSubmodule is TrackTimeSubmoduleMovable)
+            {
+                if (colorChanged || forceImmediateRebuild)
+                {
+                    RequestMeshRebuild();
+                }
+                return;
+            }
+
+            if (forceImmediateRebuild)
             {
                 meshGenerator.RebuildImmediate();
             }
         }
 
+        public void RequestMeshRebuild()
+        {
+            requiresMeshRebuild = true;
+        }
+
+        public bool ConsumeMeshRebuildRequest()
+        {
+            if (!requiresMeshRebuild)
+            {
+                return false;
+            }
+
+            requiresMeshRebuild = false;
+            return true;
+        }
+
         protected void SetMesh()
         {
             if (track.trackTimeSubmodule is TrackTimeSubmoduleMovable trackTimeSubmoduleMovable)