效果模块，以及代码位置整理

Assets/Scripts/EditorGame/GameElements/EnvironmentObjects/BackgroundController.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class BackgroundController : MonoBehaviour
+{
+    // Start is called before the first frame update
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+}

Assets/Scripts/EditorGame/GameElements/EnvironmentObjects/BackgroundController.cs.meta

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+guid: 0bfee67d496ae4f609383bce72ee88fe
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/EditorGame/GameElements/EnvironmentObjects/EnvironmentObject.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using Ichni.RhythmGame.Beatmap;
+using Lean.Pool;
+using UnityEngine;
+
+namespace Ichni.RhythmGame
+{
+    public partial class EnvironmentObject : SubstantialObject
+    {
+        public bool isStatic;
+
+        public static SubstantialObject GenerateElement(string elementName, Guid id, List<string> tags, 
+            bool isFirstGenerated, GameElement parentElement, string themeBundleName, string objectName, bool isStatic)
+        {
+            EnvironmentObject themeBundleObject =
+                ThemeBundleManager.instance.GetObject<EnvironmentObject>(themeBundleName, objectName);
+            EnvironmentObject environmentObject =
+                Instantiate(themeBundleObject, parentElement.transform).GetComponent<EnvironmentObject>();
+            environmentObject.Initialize(elementName, id, tags, isFirstGenerated, parentElement);
+            environmentObject.isStatic = isStatic;
+            return environmentObject;
+        }
+    }
+
+    public partial class EnvironmentObject
+    {
+        public override void SaveBM()
+        {
+            matchedBM = new EnvironmentObject_BM(elementName, elementGuid, tags, 
+                parentElement.matchedBM as GameElement_BM, themeBundleName, objectName, isStatic);
+        }
+    }
+
+    namespace Beatmap
+    {
+        public class EnvironmentObject_BM : SubstantialObject_BM
+        {
+            public bool isStatic;
+
+            public EnvironmentObject_BM()
+            {
+
+            }
+
+            public EnvironmentObject_BM(string elementName, Guid elementGuid, List<string> tags,
+                GameElement_BM attachedElement, string themeBundleName, string objectName, bool isStatic)
+                : base(elementName, elementGuid, tags, attachedElement, themeBundleName, objectName)
+            {
+                this.isStatic = isStatic;
+            }
+
+            public override void ExecuteBM()
+            {
+                matchedElement = EnvironmentObject.GenerateElement(elementName, elementGuid, tags, false,
+                    GetElement(attachedElementGuid), themeBundleName, objectName, isStatic);
+            }
+
+            public override GameElement DuplicateBM(GameElement parent)
+            {
+                return EnvironmentObject.GenerateElement(elementName, elementGuid, tags, false, 
+                    parent, themeBundleName, objectName, isStatic);
+            }
+        }
+    }
+}

Assets/Scripts/EditorGame/GameElements/EnvironmentObjects/EnvironmentObject.cs.meta

@@ -0,0 +1,11 @@
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+guid: b73aa7982dc9e4261b2ff45db0112d48
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: