submodule fix

Assets/Scripts/EditorGame/Base/GeneralSubmodules/SubmoduleBase.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using Ichni.Editor;
 using Ichni.RhythmGame.Beatmap;
 using UnityEngine;
@@ -16,6 +17,14 @@ namespace Ichni.RhythmGame
         public SubmoduleBase(GameElement attachedGameElement)
         {
             this.attachedGameElement = attachedGameElement;
+            
+            if (attachedGameElement.submoduleList.Any(x => x.GetType() == this.GetType()))
+            {
+                Debug.LogWarning("存在重复的Submodule");
+                LogWindow.Log($"There are repeated submodule on Game Element {attachedGameElement.elementName}", Color.yellow);
+                return;
+            }
+            
             this.attachedGameElement.submoduleList.Add(this);
         }