通过代码 (C#) 在 Unity3D 中应用 Prefab 的实例覆盖

Posted 2023-02-21

【中文标题】通过代码 (C#) 在 Unity3D 中应用 Prefab 的实例覆盖

【英文标题】：Applying a Prefab's Instance's overrides in Unity3D through code (C#)

【发布时间】：2022-01-02 17:07:27

【问题描述】：

截至 v2020.3，Unity 仍未为我们提供干净的 API，用于通过脚本应用单个预制件的覆盖。

本质上是一个干净的单线，真正反映“应用预制件”的概念，包括异常处理。

这是过时的，因为它使用了不推荐使用的功能 https://forum.unity.com/threads/apply-changes-to-prefab-keyboard-shortcut.29251/#post-2538088

【参考方案1】：

与此斗争了一段时间，当前的脚本如下。希望它可以作为构建适合您的自定义工作流程的基础。

using UnityEditor;
using UnityEngine;

public static class Editor_Helper

    [MenuItem("Editor/Apply Selected Prefab &[")]
    public static void ApplySelectedPrefab()
    
        GameObject gO = GetCurrentlySelectedObjectHierarchy();

        if (gO == null)
        
            Debug.LogWarning("Selection is not a GameObject");
            return;
        

        GameObject rootGO = PrefabUtility.GetOutermostPrefabInstanceRoot(gO);
        
        if (rootGO == null)
        
            Debug.LogWarning(string.Format("Selected GameObject (0) is not part of a prefab", gO), gO);
            return;
        

        PrefabInstanceStatus prefabInstanceStatus = PrefabUtility.GetPrefabInstanceStatus(rootGO);
        if (prefabInstanceStatus != PrefabInstanceStatus.Connected)
        
            Debug.LogWarning(string.Format("Selected Prefab Root of 0 (1) has invalid status of 2", gO, rootGO, prefabInstanceStatus), rootGO);
            return;
        

        if (!PrefabUtility.HasPrefabInstanceAnyOverrides(rootGO, false))
        
            Debug.LogWarning(string.Format("Selected Prefab Root of 0 (1) doesn't have any overrides", gO, rootGO), rootGO);
            return;
        

        PrefabUtility.ApplyPrefabInstance(rootGO, InteractionMode.UserAction);
        AssetDatabase.SaveAssets();
        
        Debug.Log(string.Format("Changes on 0 applied to 1", gO, rootGO), rootGO);
    

    private static GameObject GetCurrentlySelectedObjectHierarchy() => Selection.activeGameObject;