Unity3d熱更新（二）：資源打包As

1.新建一個cube，將其拉倒Project視圖裡創建預設。

2.在Assets目錄下創建Scenes文件夾，創建場景scene1.unity。

3.新建ExportAssetBundles.cs，保存在Assets/Editor目錄下。程式碼如下：

[csharp] view plain copy

using UnityEngine;
using UnityEditor;
using System.Collections;
public class ExportAssetBundles : MonoBehaviour {
[MenuItem("Build/ExportResource")]
static void ExportResource()
{
// 打開保存面板，獲取用戶選擇的路徑
string path = EditorUtility.SaveFilePanel("Save Resource", "", "New Resource", "assetbundle");
if (path.Length != 0)
{
// 選擇的要保存的對象
Object[] selection = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);
// 打包
BuildPipeline.BuildAssetBundle(Selection.activeObject, selection, path, BuildAssetBundleOptions.CollectDependencies | BuildAssetBundleOptions.CompleteAssets, BuildTarget.StandaloneWindows);
}
}
[MenuItem("Build/ExportScene")]
static void ExportScene()
{
// 打開面板，選擇用戶保存的路徑
string path = EditorUtility.SaveFilePanel("Save Resource", "", "New Resource", "unity3d");
if (path.Length != 0)
{
// 要打包的場景
string[] scenes = {"Assets/Scenes/scene1.unity"};
// 打包
BuildPipeline.BuildPlayer(scenes, path, BuildTarget.StandaloneWindows, BuildOptions.BuildAdditionalStreamedScenes);
}
}
}

4.選中預設，運行ExportResource，彈出保存對話框，命名為cube.assetbundle。

5.運行ExportScene，彈出保存對話框，命名為scene1.unity3d。

[csharp] view plain copy

using UnityEngine;
using System.Collections;
public class Load : MonoBehaviour {
private string BundleUrl = "file:///C:/Users/Administrator/Desktop/Res/cube.assetbundle";
private string SceneUrl = "file:///C:/Users/Administrator/Desktop/Res/scene1.unity3d";
void Start()
{
StartCoroutine(Download());
}
IEnumerator Download()
{
// 下載AssetBundle，載入cube
using(WWW www = new WWW(BundleUrl))
{
yield return www;
AssetBundle bundle = www.assetBundle;
Instantiate(bundle.Load("Cube"));
bundle.Unload(false);
yield return new WaitForSeconds(5);
}
using(WWW www = new WWW(SceneUrl))
{
yield return www;
Application.LoadLevel("scene1");
}
}
}

我們在程式載入的時候必須保證先載入公共對象。否則，只能是在各個對象載入成功後，再通過程式手動添加進來，比較繁瑣。在實際項目中，由於是團隊開發，對象間的依賴關係通常會比較凌亂，最好在開發周期就定好相關的規範約束，方便管理。

[csharp] view plain copy

Tags: