Unity C# 打包AssetBundle與場景

weixin_34127717發表於2019-02-27
UnityC#

Unity2018已經把打包過程簡化很多了
我們只需要關心兩個API:
1.BuildPipline.BuildAssetBundles() 打包AssetBundle
2.BuildPipline.BuildPlayer() 打包場景

1.打包AssetBundle
先在資源的Inspector皮膚最下方 填寫資源所屬的AssetBundle名稱和字尾(字尾可以不填)
再利用BuildPipeline.BuildAssetBundles()進行打包
填寫資源包名

2.打包Scene
(1)可以利用BuildPipline.BuildAssetBundles()進行打包。
注意：場景包內只能給.unity場景檔案填寫資源包名，不能給其他資源命名，否則打包會失敗
一個場景ab包內可以包含多個場景檔案，場景需要的資源會自動關聯
有些資源是Editor下專用的。不會被打包進ab裡 比如LightingData.asset
使用方式是www載入場景ab包後 先呼叫www.assetBundle 再呼叫SceneManager.LoadScene("name")

(2)利用BuildPipeline.BuildPlayer()進行打包
為方便使用 先把要打包的場景放入指定的資料夾 通過指令碼批量打包
場景放入指定資料夾

3.指令碼批量打包
開始打包

4.打包完畢
打包完畢

5.載入測試
載入測試

6.打包和測試指令碼

AssetBundleBuilder.cs

using UnityEngine;
using UnityEditor;
using System.IO;

/// <summary>
/// 資源包打包工具
/// <para>打包AssetBundle和場景(Unity 2018.2.20)</para>
/// <para>ZhangYu 2019-02-26</para>
/// </summary>
public class AssetBundleBuilder
{
    [MenuItem("打包/Windows/資源包和場景")]
    public static void BuildAbsAndScenesWindows() {
        BuildAbsAndScenes(BuildTarget.StandaloneWindows);
    }

    [MenuItem("打包/Android/資源包和場景")]
    public static void BuildAbsAndScenesAndroid() {
        BuildAbsAndScenes(BuildTarget.Android);
    }

    [MenuItem("打包/IOS/資源包和場景")]
    public static void BuildAbsAndScenesIOS() {
        BuildAbsAndScenes(BuildTarget.iOS);
    }

    [MenuItem("打包/Windows/資源包")]
    public static void BuildAbsWindows() {
        BuildAssetBundles(BuildTarget.StandaloneWindows);
    }

    [MenuItem("打包/Android/資源包")]
    public static void BuildAbsAndroid() {
        BuildAssetBundles(BuildTarget.Android);
    }

    [MenuItem("打包/IOS/資源包")]
    public static void BuildAbsIOS() {
        BuildAssetBundles(BuildTarget.iOS);
    }

    [MenuItem("打包/Windows/場景")]
    public static void BuildScenesWindows() {
        BuildScenes(BuildTarget.StandaloneWindows);
    }

    [MenuItem("打包/Android/場景")]
    public static void BuildScenesAndroid() {
        BuildScenes(BuildTarget.Android);
    }

    [MenuItem("打包/IOS/場景")]
    public static void BuildScenesIOS() {
        BuildScenes(BuildTarget.iOS);
    }

    // 打包AssetBundle和Scenes
    public static void BuildAbsAndScenes(BuildTarget platform) {
        BuildAssetBundles(platform);
        BuildScenes(platform);
    }

    // 打包AssetBundles
    private static void BuildAssetBundles(BuildTarget platform) {
        // 輸出路徑
        string outPath = Application.streamingAssetsPath + "/Abs";
        if (!Directory.Exists(outPath)) Directory.CreateDirectory(outPath);
        EditorUtility.DisplayProgressBar("資訊", "打包資源包", 0f);
        BuildPipeline.BuildAssetBundles(outPath, BuildAssetBundleOptions.DeterministicAssetBundle, platform);
        AssetDatabase.Refresh();
        Debug.Log("所有資源包打包完畢");
    }

    // 打包Scenes
    private static void BuildScenes(BuildTarget platform) {
        // 指定場景資料夾和輸出路徑
        string scenePath = Application.dataPath + "/AbResources/Scenes";
        string outPath = Application.streamingAssetsPath + "/Abs/";

        if (Directory.Exists(scenePath)) {
            // 建立輸出資料夾
            if (!Directory.Exists(outPath)) Directory.CreateDirectory(outPath);

            // 查詢指定目錄下的場景檔案
            string[] scenes = GetAllFiles(scenePath, "*.unity");
            for (int i = 0; i < scenes.Length; i++) {
                string url = scenes[i].Replace("\\", "/");
                int index = url.LastIndexOf("/");
                string scene = url.Substring(index + 1, url.Length - index - 1);
                string msg = string.Format("打包場景{0}", scene);
                EditorUtility.DisplayProgressBar("資訊", msg, 0f);
                scene = scene.Replace(".unity", ".scene");
                Debug.Log(string.Format("打包場景{0}到{1}", url, outPath + scene));
                BuildPipeline.BuildPlayer(scenes, outPath + scene, BuildTarget.StandaloneWindows, BuildOptions.BuildAdditionalStreamedScenes);
                AssetDatabase.Refresh();
            }
            EditorUtility.ClearProgressBar();
            Debug.Log("所有場景打包完畢");
        }
    }

    /// <summary> 獲取資料夾和子資料夾下所有指定型別檔案 </summary>
    private static string[] GetAllFiles(string directory, params string[] types) {
        if (!Directory.Exists(directory)) return new string[0];
        string searchTypes = (types == null || types.Length == 0) ? "*.*" : string.Join("|", types);
        string[] names = Directory.GetFiles(directory, searchTypes, SearchOption.AllDirectories);
        return names;
    }

}

LoadTest.cs

using UnityEngine;
using UnityEngine.SceneManagement;

public class LoadTest : MonoBehaviour {

    private void Start () {
        LoadAB();
        LoadScene();
    }

    // 載入資源包
    private void LoadAB() {
        // 資源包路徑
        string path = Application.streamingAssetsPath + "/Abs/test.ab";

        // WWW下載
        Http http = gameObject.AddComponent<Http>();
        http.get(path, OnLoadABComplete);
    }

    // 載入場景
    private void LoadScene() {
        // 資源包路徑
        string path = Application.streamingAssetsPath + "/Abs/Test.scene";

        // WWW下載
        Http http = gameObject.AddComponent<Http>();
        http.get(path, OnLoadSceneComplete);
    }

    // 載入AssetBundle完畢
    private void OnLoadABComplete(WWW www) {
        // 例項化預製
        AssetBundle ab = www.assetBundle;
        Object prefab = ab.LoadAsset("Test");
        GameObject instance = (GameObject)Instantiate(prefab);
        DontDestroyOnLoad(instance);
    }

    // 載入場景完畢
    private void OnLoadSceneComplete(WWW www) {
        // 必須寫www.assetBundle這句 這樣場景才能被讀取到
        AssetBundle ab = www.assetBundle;
        SceneManager.LoadScene("Test");
    }

}

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