PrefabUtility.RevertRemovedGameObject

参数

描述

将此已移除的 GameObject 重新添加到 Prefab 实例中。

撤消操作完成后，GameObject 将再次存在于 Prefab 实例中。

除非之前已将 GameObject 的组件和子级移除，否则它们也会再次存在。

请注意，在撤消之前已移除 GameObject 的层次结构中的已添加 GameObject 和已添加组件覆盖不会恢复。

其他资源：PrefabUtility.ApplyRemovedGameObject、PrefabUtility.GetRemovedGameObjects。

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

// Creates new menu items under 'Examples' in the main menu.
public class RevertRemovedGameObjectExample
{
    [MenuItem("Examples/RevertRemovedGameObject Example 1")]
    static void CreatePrefabAndRevertChanges()
    {
        // Create folder Prefabs and set the path as within the Prefabs folder,
        // and name it as the GameObject's name with the .Prefab format
        if (!Directory.Exists("Assets/Prefabs"))
            AssetDatabase.CreateFolder("Assets", "Prefabs");

        //Setup hierarchy with root and one child
        GameObject rootGameObject = new GameObject("Root");
        GameObject child = new GameObject("Child");
        child.transform.parent = rootGameObject.transform;

        //Create prefab based on the GameObject hierarchy we just created
        GameObject prefabAsset = PrefabUtility.SaveAsPrefabAssetAndConnect(rootGameObject, "Assets/Prefabs/" + rootGameObject.name + ".prefab", InteractionMode.AutomatedAction);

        //Get the corresponding object matching the Child GameObject that was destroyed
        GameObject correspondingChildGameObject = prefabAsset.transform.GetChild(0).gameObject;

        //Destroy child GameObject so we can apply the override to the Prefab
        Object.DestroyImmediate(child);

        //Use the variables from above to revert the removed GameObject override in the instance and restore the child GameObject
        PrefabUtility.RevertRemovedGameObject(rootGameObject, correspondingChildGameObject, InteractionMode.AutomatedAction);

        if (prefabAsset.transform.childCount == 1)
            Debug.Log("'Child' GameObject was removed and the override reverted successfully.");
        else
            Debug.Log("The override was not reverted successfully");
    }

    [MenuItem("Examples/RevertRemovedGameObject Example 2")]
    static void CreatePrefabAndApplyChangesWithGetRemovedGameObjects()
    {
        // Create folder Prefabs and set the path as within the Prefabs folder,
        // and name it as the GameObject's name with the .Prefab format
        if (!Directory.Exists("Assets/Prefabs"))
            AssetDatabase.CreateFolder("Assets", "Prefabs");

        //Setup hierarchy with root and one child
        GameObject rootGameObject = new GameObject("Root");
        GameObject child = new GameObject("Child");
        child.transform.parent = rootGameObject.transform;

        //Create prefab based on the GameObject hierarchy we just created
        GameObject prefabAsset = PrefabUtility.SaveAsPrefabAssetAndConnect(rootGameObject, "Assets/Prefabs/" + rootGameObject.name + ".prefab", InteractionMode.AutomatedAction);

        //Destroy child GameObject so we can apply the override to the Prefab
        Object.DestroyImmediate(child);

        //Get the override and the information to apply the changes to the Prefab asset
        List<RemovedGameObject> removedGameObjects = PrefabUtility.GetRemovedGameObjects(rootGameObject);
        GameObject assetGameObject = removedGameObjects[0].assetGameObject;
        GameObject parentOfRemovedGameObjectInInstance = removedGameObjects[0].parentOfRemovedGameObjectInInstance;

        //Use the variables from above to revert the removed GameObject override in the instance and restore the child GameObject
        PrefabUtility.RevertRemovedGameObject(parentOfRemovedGameObjectInInstance, assetGameObject, InteractionMode.AutomatedAction);

        if (prefabAsset.transform.childCount == 1)
            Debug.Log("'Child' GameObject was removed and the override reverted successfully.");
        else
            Debug.Log("The override was not reverted successfully");
    }
}