[Unity3d]打包Assetbundle并加载(一)

2014-11-24 07:42:49 · 作者: · 浏览: 2

由于我们要将模型资源放在远程的服务器端,但如果直接放fbx模型是不可以加载的,所以我们可以将fbx做成预设或者是直接将其打包成assetbundle格式的,然后通过www来加载获取。

1.首先要讲一下不同平台下的一个StreamingAssets路径,这是不同的。

	    //不同平台下StreamingAssets的路径是不同的,这里需要注意一下。
	    public static readonly string PathURL =
#if UNITY_ANDROID   //安卓
		"jar:file://" + Application.dataPath + "!/assets/";
#elif UNITY_IPHONE  //iPhone
		Application.dataPath + "/Raw/";
#elif UNITY_STANDALONE_WIN || UNITY_EDITOR  //windows平台和web平台
	"file://" + Application.dataPath + "/StreamingAssets/";
#else
        string.Empty;
#endif

这就获取到了不同平台的一个路径,我们可以将打包的文件放在这些路径下,然后再从这路径去读取资源。

2.关于打包assetbundle的脚本

using UnityEngine;
using System.Collections;
using UnityEditor;

public class Test : Editor
{
	//打包单个
	[MenuItem("Custom Editor/Create AssetBunldes Main")]
	static void CreateAssetBunldesMain ()
	{
        //获取在Project视图中选择的所有游戏对象
		Object[] SelectedAsset = Selection.GetFiltered (typeof(Object), SelectionMode.DeepAssets);
 
        //遍历所有的游戏对象
		foreach (Object obj in SelectedAsset) 
		{
			//本地测试:建议最后将Assetbundle放在StreamingAssets文件夹下,如果没有就创建一个,因为移动平台下只能读取这个路径
			//StreamingAssets是只读路径,不能写入
			//服务器下载:就不需要放在这里,服务器上客户端用www类进行下载。
			string targetPath = Application.dataPath + "/StreamingAssets/" + obj.name + ".assetbundle";
			if (BuildPipeline.BuildAssetBundle (obj, null, targetPath, BuildAssetBundleOptions.CollectDependencies)) {
  				Debug.Log(obj.name +"资源打包成功");
			} 
			else 
			{
 				Debug.Log(obj.name +"资源打包失败");
			}
		}
		//刷新编辑器
		AssetDatabase.Refresh ();	
		
	}
	
	[MenuItem("Custom Editor/Create AssetBunldes ALL")]
	static void CreateAssetBunldesALL ()
	{
		
		Caching.CleanCache ();
 

		string Path = Application.dataPath + "/StreamingAssets/ALL.assetbundle";
 
		
		Object[] SelectedAsset = Selection.GetFiltered (typeof(Object), SelectionMode.DeepAssets);
 
		foreach (Object obj in SelectedAsset) 
		{
			Debug.Log ("Create AssetBunldes name :" + obj);
		}
		
		//这里注意第二个参数就行
		if (BuildPipeline.BuildAssetBundle (null, SelectedAsset, Path, BuildAssetBundleOptions.CollectDependencies)) {
			AssetDatabase.Refresh ();
		} else {
			
		}
	}
	
	[MenuItem("Custom Editor/Create Scene")]
	static void CreateSceneALL ()
	{
		//清空一下缓存
		Caching.CleanCache();
		string Path = Application.dataPath + "/MyScene.unity3d";
		string  []levels = {"Assets/Level.unity"};
    	//打包场景
    	BuildPipeline.BuildPlayer( levels, Path,BuildTarget.WebPlayer, BuildOptions.BuildAdditionalStreamedScenes);
		AssetDatabase.Refresh ();
	}
	
}

前提要新手动创建一个StreamingAssets文件夹

3.读取资源,这里只举例从本地读取,跟从网络读取是一样的,可以参考官方文档:

http://game.ceeger.com/Script/WWW/WWW.html

using UnityEngine;
using System.Collections;

public class RunScript : MonoBehaviour
{
	

	    //不同平台下StreamingAssets的路径是不同的,这里需要注意一下。
	    public static readonly string PathURL =
#if UNITY_ANDROID
		"jar:file://" + Application.dataPath + "!/assets/";
#elif UNITY_IPHONE
		Application.dataPath + "/Raw/";
#elif UNITY_STANDALONE_WIN || UNITY_EDITOR
	"file://" + Application.dataPath + "/StreamingAssets/";
#else
        string.Empty;
#endif
	
	void OnGUI()
	{
		if(GUILayout.Button("Main Assetbundle"))
		{
			//StartCoroutine(LoadMainGameObject(PathURL + "Prefab0.assetbundle"));
			//StartCoroutine(LoadMainGameObject(PathURL +  "Prefab1.assetbundle"));
		
			Start