unity3d格式的導出與加載

1.導出。unity3d格式資源：

http://game.ceeger.com/Script/BuildPipeline/BuildPipeline.BuildAssetBundle.html

這裏我稍微改了一點點~~~代碼如下：

using UnityEngine;
using UnityEditor;
using System.IO;
public class BuildAssetBundlesFromDirectory {
[@MenuItem("Asset/Build AssetBundles From Directory of Files")]
static void ExportAssetBundles () {
// Get the selected directory
//獲取選擇的目錄
string path = AssetDatabase.GetAssetPath(Selection.activeObject);
Debug.Log("Selected Folder: " + path);
if (path.Length != 0) {
path = path.Replace("Assets/", "");
string [] fileEntries = Directory.GetFiles(Application.dataPath+"/"+path);
foreach(string fileName in fileEntries) {
string filePath = fileName.Replace("\\","/");
int index = filePath.LastIndexOf("/");
filePath = filePath.Substring(index+1);
Debug.Log("filePath:"+filePath);
string localPath = "Assets/" + path+"/";
if (index > 0)
localPath += filePath;
Object t = AssetDatabase.LoadMainAssetAtPath(localPath);
if (t != null) {
Debug.Log(t.name);
string bundlePath = "Assets/" + path + "/" + t.name + ".unity3d";
Debug.Log("Building bundle at: " + bundlePath);
// Build the resource file from the active selection.
//從激活的選擇編譯資源文件
BuildPipeline.BuildAssetBundle
(t, null, bundlePath, BuildAssetBundleOptions.CompleteAssets);
}
}
}
}
}

using UnityEngine;
using UnityEditor;
using System.IO;
public class BuildAssetBundlesFromDirectory {

	[@MenuItem("Asset/Build AssetBundles From Directory of Files")]

	static void ExportAssetBundles () {

		// Get the selected directory

		//獲取選擇的目錄

		string path = AssetDatabase.GetAssetPath(Selection.activeObject);

		Debug.Log("Selected Folder: " + path);

		if (path.Length != 0) {

			path = path.Replace("Assets/", "");

			string [] fileEntries = Directory.GetFiles(Application.dataPath+"/"+path);

			foreach(string fileName in fileEntries) {

				string filePath = fileName.Replace("\\","/");

				int index = filePath.LastIndexOf("/");

				filePath = filePath.Substring(index+1);

				Debug.Log("filePath:"+filePath);

				string localPath = "Assets/" + path+"/";

				if (index > 0)

				localPath += filePath;

				Object t = AssetDatabase.LoadMainAssetAtPath(localPath);

				if (t != null) {

					Debug.Log(t.name);

					string bundlePath = "Assets/" + path + "/" + t.name + ".unity3d";

					Debug.Log("Building bundle at: " + bundlePath);

					// Build the resource file from the active selection.

					//從激活的選擇編譯資源文件

					BuildPipeline.BuildAssetBundle

					(t, null, bundlePath, BuildAssetBundleOptions.CompleteAssets);

				}


 
			}

		}

	}

}

注意：string filePath = fileName.Replace("\\","/"); 把“\”轉化成“/”。“Assets/path/.prefab”和“path\.prefab”

把以上代碼的腳本放到一個文件夾裏面，選中該文件夾，再點擊菜單欄上的按鈕"Asset/Build AssetBundles From Directory of Files"，就成功轉成unity3d格式了

2.加載.unity3d：

[java] view plain copy print ?

function Start () {
var www = new WWW ("file:///"+Application.dataPath+"/resourse/Cube.unity3d");
yield www;
Instantiate(www.assetBundle.mainAsset);
}

function Start () {

	var www = new WWW ("file:///"+Application.dataPath+"/resourse/Cube.unity3d");

	yield www;

	Instantiate(www.assetBundle.mainAsset);

}

注：Application.dataPath獲取改程序的資源路徑。

[java] view plain copy print ?

function Start ()
{
var www = WWW.LoadFromCacheOrDownload("http://210.30.12.33:8080/YangChun/file/Cube.unity3d",5);
yield www;
if (www.error != null)
{
Debug.Log (www.error);
return;
}
Instantiate(www.assetBundle.mainAsset);
}

function Start ()

{ 

    var www = WWW.LoadFromCacheOrDownload("http://210.30.12.33:8080/YangChun/file/Cube.unity3d",5);   

    yield www;

    if (www.error != null)

    {

        Debug.Log (www.error);

        return;

    }

   Instantiate(www.assetBundle.mainAsset);

}

我試了一下用Resources類的方法還不能加載unity3d格式的文件。不過如果是本地加載的話直接加載prefab就可以了，用不着用unity3d格式了。貌似

[java] view plain copy print ?

LoadFromCacheOrDownload方法只能加載.unity3d格式文件，我用Tomcat服務器小測了一下，可以達到緩存的效果。

LoadFromCacheOrDownload方法只能加載.unity3d格式文件，我用Tomcat服務器小測了一下，可以達到緩存的效果。

3.加載場景的話：

先把場景轉化成unity3d格式的。

注：以下代碼的腳本必須放在Editor文件夾下（如果沒有改文件，新建一個就行），BuildTarget注意哈，轉化成不同的平臺~~~BuildTarget.Andrdoid

[java] view plain copy print ?

<pre class="java" name="code">@MenuItem ("Build/BuildWebplayerStreamed")
static function MyBuild(){
var levels : String[] = ["Assets/yaya.unity"];
BuildPipeline.BuildStreamedSceneAssetBundle( levels, "yaya.unity3d", BuildTarget.WebPlayer);//BuildTarget.Andrdoid
}
</pre>或者
<pre></pre>
<pre style="background-color: rgb(255, 255, 255);" class="java" name="code"><pre class="java" name="code">@MenuItem ("Build/BuildWebplayerStreamed")
static function MyBuild(){
BuildPipeline.BuildPlayer(["Assets/main.unity"],"VR.unity3d",BuildTarget.WebPlayer, BuildOptions.BuildAdditionalStreamedScenes);
}</pre>
<pre></pre>
<pre style="padding: 0px; color: rgb(53, 47, 40); line-height: 20px; font-family: Verdana,Geneva,sans-serif,宋體; margin-top: 0px; margin-bottom: 0px; white-space: pre-wrap; word-wrap: break-word; background-color: rgb(238, 238, 238);"><pre class="java" name="code">function Start () {
// Download compressed scene. If version 5 of the file named "Streamed-Level1.unity3d" was previously downloaded and cached.
// Then Unity will completely skip the download and load the decompressed scene directly from disk.
//下載壓縮的場景。如果名爲Streamed-Level1.unity3d的文件版本爲5，預先下載並緩存。
//然後Unity將完全跳過下載並直接從磁盤加載解壓的場景。
var download = WWW.LoadFromCacheOrDownload ("http://210.30.12.16:8080/chunge/yaya.unity3d", 5);
yield download;
// Handle error
if (download.error != null)
{
Debug.LogError(download.error);
return;
}
// In order to make the scene available from LoadLevel, we have to load the asset bundle.
// The AssetBundle class also lets you force unload all assets and file storage once it is no longer needed.
//爲了使場景LoadLevel可用，必須加載資源包
//AssetBundle類，還可以強制卸載所有的資源和文件存儲，一旦不再需要。
var bundle = download.assetBundle;
// Load the level we have just downloaded
//加載剛纔下載的關卡
Application.LoadLevel ("yaya");//這裏面的“yaya”是指“Assets/yaya.unity”而不是指“yaya.unity3d”
}</pre> </pre>
<pre></pre>
<pre></pre>
<pre></pre>
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