UNITY一键完全解压已打开的场景中的预制体

一：在项目中创建一个名为 Editor 的文件夹（如果还没有）。

二：在该文件夹下新建一个 C# 脚本， UnpackAllPrefabsInScene.cs。复制粘贴以下代码。

using UnityEngine;
using UnityEditor;
using System.Collections.Generic;

public class UnpackAllPrefabsInScene
{
    [MenuItem("Tools/Unpack All Prefabs in Scene Completely")]
    static void UnpackAllPrefabsCompletely()
    {
        if (!EditorApplication.isPlaying)
        {
            GameObject[] allRootObjects = UnityEngine.SceneManagement.SceneManager.GetActiveScene().GetRootGameObjects();
            List<GameObject> prefabInstances = new List<GameObject>();

            // 收集所有根对象及其子对象中属于预制体实例的对象
            foreach (GameObject root in allRootObjects)
            {
                prefabInstances.AddRange(GetAllPrefabInstances(root));
            }

            if (prefabInstances.Count == 0)
            {
                Debug.Log("当前场景中没有预制体实例。");
                return;
            }

            // 开始 Undo 批量操作（可撤销）
            Undo.RecordObjects(prefabInstances.ToArray(), "Unpack All Prefabs Completely");

            int count = 0;
            foreach (GameObject instance in prefabInstances)
            {
                if (PrefabUtility.IsPartOfAnyPrefab(instance))
                {
                    PrefabUtility.UnpackPrefabInstance(instance, PrefabUnpackMode.Completely, InteractionMode.UserAction);
                    count++;
                }
            }

            Debug.Log($"成功完全解包 {count} 个预制体实例。");
        }
        else
        {
            Debug.LogWarning("请在编辑模式下运行此操作。");
        }
    }

    // 递归获取 GameObject 及其所有子对象中属于预制体实例的对象
    static List<GameObject> GetAllPrefabInstances(GameObject root)
    {
        List<GameObject> result = new List<GameObject>();
        if (PrefabUtility.IsPartOfAnyPrefab(root))
        {
            result.Add(root);
        }

        foreach (Transform child in root.transform)
        {
            result.AddRange(GetAllPrefabInstances(child.gameObject));
        }

        return result;
    }
}