BuildAssetBundleOptions.DeterministicAssetBundle

描述

使用存储在资源包中对象的 ID 的哈希构建资源包。

此脚本允许您重新构建资源包并在资源包中直接引用资源。 重新构建资源包时，资源包中对象的 ID 将在完成重新构建后 保持不变。 由于这是一个 32 位哈希空间，如果您在资源包中有很多对象，可能会增加哈希冲突的可能性。在这种情况下，Unity 将显示错误，并且不会构建资源包。 哈希基于资源的 GUID 以及对象在资源中的本地 ID。 从 DeterministicAssetBundle 中加载内容也比一般资源包要慢，因为加载 API 的线程后台通常会预期对象以特定方式排序（即读取时减少搜寻的方式）。 使用 DeterministicAssetBundles 时，这是无法实现的。

注意：此功能会始终启用。

//Create a folder (right click in the Assets folder and go to Create>Folder), and name it “Editor” if it doesn’t already exist
//Place this script in the Editor folder

//This script creates a new Menu named “Build Asset” and new options within the menu named “Normal” and “Deterministic Asset Bundle”. Click these menu items to build an AssetBundle into a folder with different build options.

using UnityEngine;
using UnityEditor;

public class Example : MonoBehaviour
{
    //Creates a new menu (Build Asset Bundles) and item (Normal) in the Editor
    [MenuItem("Build Asset Bundles/Normal")]
    static void BuildABsNone()
    {
        //Create a folder to put the Asset Bundle in.
        // This puts the bundles in your custom folder (this case it's "MyAssetBuilds") within the Assets folder.
        //Build AssetBundles with no special options
        BuildPipeline.BuildAssetBundles("Assets/MyAssetBuilds", BuildAssetBundleOptions.None, BuildTarget.StandaloneOSX);
    }

    //Creates a new item (Deterministic) in the new Build Asset Bundles menu
    [MenuItem("Build Asset Bundles/Deterministic ")]
    static void BuildABsDeterministic()
    {
        //Build the AssetBundles in this mode
        BuildPipeline.BuildAssetBundles("Assets/MyAssetBuilds", BuildAssetBundleOptions.DeterministicAssetBundle, BuildTarget.StandaloneOSX);
    }
}