Version: 2022.1
public static bool IsMainAsset (Object obj);
public static bool IsMainAsset (int instanceID);

描述

资源是否为 Project 窗口中的主资源?

例如,导入的模型有一个游戏对象作为其根,以及几个处于展开状态的网格和子游戏对象 。在这种情况下,根游戏对象就是主资源。

using UnityEditor;
using UnityEngine;

public class Scriptable : ScriptableObject { }

public class AssetDatabaseExamples : MonoBehaviour { [MenuItem("AssetDatabase/Is Main Asset Example")] static void IsMainAssetExample() { var materialAsset = new Material(Shader.Find("Standard"));

//materialAsset is still in memory, therefore this will be False Debug.Log(AssetDatabase.IsMainAsset(materialAsset));

//Create a Scriptable object var scriptableAssetPath = "Assets/ScriptableObjects/NewObject.asset"; var mainAsset = ScriptableObject.CreateInstance<Scriptable>(); AssetDatabase.CreateAsset(mainAsset, scriptableAssetPath);

//Add the Material Asset to the Scriptable object, so that the Material becomes a Sub Asset of the Scriptable object AssetDatabase.AddObjectToAsset(materialAsset, scriptableAssetPath); AssetDatabase.SaveAssets();

//This will be false because material asset has been added to the main Asset and is now a Sub Asset Debug.Log(AssetDatabase.IsMainAsset(materialAsset));

//Remove the subAsset from the Scriptable object and create it as an Asset AssetDatabase.RemoveObjectFromAsset(materialAsset); AssetDatabase.CreateAsset(materialAsset, "Assets/Materials/New Mat0.mat");

//This will be True because the material is now the main Asset Debug.Log(AssetDatabase.IsMainAsset(materialAsset)); } }