【AssetBundle】

可以将游戏中需要加载的资源打包成一个文件，方便在运行时动态加载和卸载。

创建 AssetBundle

Editor/AssetBundleBuilder.cs

using UnityEditor;
using UnityEngine;
public class AssetBundleBuilder : Editor
{
    [MenuItem("AssetBundles/Build AssetBundles")]
    static void BuildAssetBundles()
    {
        // 设置打包输出路径和资源列表
        AssetBundleBuild[] builds = new AssetBundleBuild[1];
        builds[0].assetBundleName = "dajibundle";
        builds[0].assetNames = new string[] { "Assets/DaJi/DaJiPrefeb.prefab"};

        // 执行打包操作
        BuildPipeline.BuildAssetBundles("DLC", builds, BuildAssetBundleOptions.None, BuildTarget.StandaloneWindows);
    }
}

从资源服下载 AssetBundle

using System.Collections;
using UnityEngine;
using UnityEngine.Networking;

public class CommonSTSceneScript : MonoBehaviour
{
    public string assetBundleURL = "https://vp666.cn/others/unity2022h5/DLC/dajibundle";
    public string assetName = "Assets/DaJi/DaJiPrefeb.prefab";

    void Start()
    {
        StartCoroutine(LoadAssetBundle());
    }

    IEnumerator LoadAssetBundle()
    {
        // 下载AssetBundle文件
        UnityWebRequest www = UnityWebRequestAssetBundle.GetAssetBundle(assetBundleURL);
        yield return www.SendWebRequest();

        if (www.result == UnityWebRequest.Result.Success)
        {
            // 加载AssetBundle
            AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(www);
            if (bundle != null)
            {
                // 加载并实例化资源
                GameObject asset = bundle.LoadAsset<GameObject>(assetName);
                Instantiate(asset);
            }
            else
            {
                Debug.Log("Failed to load AssetBundle");
            }

            // 释放AssetBundle
            bundle.Unload(false);
        }
        else
        {
            Debug.Log(www.error);
        }
    }
}

加载 AssetBundle

在代码中使用 AssetBundle.LoadFromFile 或 AssetBundle.LoadFromMemoryAsync 来加载 AssetBundle。例如：

AssetBundle myAssetBundle = AssetBundle.LoadFromFile("AssetBundles/myassetbundle");

卸载 AssetBundle

myAssetBundle.Unload(false);

加载资源

使用 AssetBundle 中的 LoadAsset 或 LoadAssetAsync 方法来加载需要的资源。例如：

GameObject myPrefab = myAssetBundle.LoadAsset<GameObject>("myprefab");