AssetBundle Workflow

构建AssetBundles

在Project 的面板中选择一个物体
在属性面板底部，声明assetboundle的名字，后面是它的后缀，后缀可以是任意的
名字可以以路径的方式命名，比如environment/forest，会在environment文件夹生成一个forest文件

Build the AssetBundles

using UnityEditor;
using System.IO;

public class CreateAssetBundles
{
    [MenuItem("Assets/Build AssetBundles")]
    static void BuildAllAssetBundles()
    {
        string assetBundleDirectory = "Assets/AssetBundles";
        if(!Directory.Exists(assetBundleDirectory))
        {
            Directory.CreateDirectory(assetBundleDirectory);
        }
        BuildPipeline.BuildAssetBundles(assetBundleDirectory, 
                                        BuildAssetBundleOptions.None, 
                                        BuildTarget.StandaloneWindows);
    }
}

Loading AssetBundles and Assets

本地加载资源

For users intending to load from local storage, you’ll be interested in the AssetBundles.LoadFromFile API. Which looks like this:

public class LoadFromFileExample extends MonoBehaviour {
    function Start() {
        var myLoadedAssetBundle 
            = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, "myassetBundle.ab"));
        if (myLoadedAssetBundle == null) {
            Debug.Log("Failed to load AssetBundle!");
            return;
        }
//"MyObject"是打包物体的名字，比如cube打包成assetboundle，名字为“myassetBundle.ab”
        var prefab = myLoadedAssetBundle.LoadAsset<GameObject>("MyObject");
        Instantiate(prefab);
    }
}

`网络加载`

IEnumerator InstantiateObject()
{
    string url = "file:///" + Application.dataPath + "/AssetBundles/" + assetBundleName;        
    UnityEngine.Networking.UnityWebRequest request 
        = UnityEngine.Networking.UnityWebRequestAssetBundle.GetAssetBundle(url, 0);
    yield return request.Send();
    AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(request);
    GameObject cube = bundle.LoadAsset<GameObject>("Cube");
    GameObject sprite = bundle.LoadAsset<GameObject>("Sprite");
    Instantiate(cube);
    Instantiate(sprite);
}

GetAssetBundle(string, int) 前边是路径，后边是版本号，路径要加上后缀名

UnityWebRequest 处理的是 AssetBundles, DownloadHandlerAssetBundle, 处理的是assetboundle的请求 request.

来源：https://blog.csdn.net/qq_37672438/article/details/102775797

标签

unity

unity 之 AssetBoundle