[unity3d]unity中打包成.unity3d格式并实现本地加载出来

1.首先我们把这段代码拷贝下来，放进工程，不要托给任何物体，就放在那不要理它。

using UnityEngine;
using UnityEditor;
public class ExportAssetBundles {
    [MenuItem("Export/Build AssetBundle From Selection - Track dependencies")]
    static void ExportResource () {
        // Bring up save panel
        string path = EditorUtility.SaveFilePanel ("Save Resource", "", "New Resource", "unity3d");
        if (path.Length != 0) {
            // Build the resource file from the active selection.
        Object[] selection = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);
            BuildPipeline.BuildAssetBundle(Selection.activeObject, selection, path, BuildAssetBundleOptions.CollectDependencies | BuildAssetBundleOptions.CompleteAssets);
            Selection.objects = selection;
        }
    }
    [MenuItem("Export/Build AssetBundle From Selection - No dependency tracking")]
    static void ExportResourceNoTrack () {
        // Bring up save panel
        string path = EditorUtility.SaveFilePanel ("Save Resource", "", "New Resource", "unity3d");
        if (path.Length != 0) {
            // Build the resource file from the active selection.
            BuildPipeline.BuildAssetBundle(Selection.activeObject, Selection.objects, path);
        }
    }
}

我们仔细看一下，其实打包的.unity3d格式的文件也类似assenbundle,只不过是换了个不同的后缀名而已。

当我们创建完，保存好后我，我们会发现菜单的导航栏多了这2项

2.我们在选中我们需要打包的预设物体（也即是Prefab）。然后选中上面的第一项进行打包成.unity3d格式的文件。如图

3.设置名字，路径等（路径很重要，待会加载会用到。）如图:

4.刷新下。你就会看见这个了:

这个就是我们打包后动态加载的内容。

5. 现在我来说下怎么动态加载它吧,直接上代码

using UnityEngine;
using System.Collections;
using System.IO;

public class LoadUnity3d : MonoBehaviour
{

    // Use this for initialization
    void Start()
    {

        StartCoroutine(LoadScene());

    }

    // Update is called once per frame
    void Update()
    {

    }

    IEnumerator LoadScene()
    {
        //文件路径，也就是我们打包的那个
        WWW www = new WWW("file:///" + Application.dataPath + "/Bundles/My Prefab.unity3d");
        yield return www;
        Instantiate(www.assetBundle.mainAsset);
    }
}

6.我们再新建一个空物体，讲我们这个脚本托给他，运行，你就能看见我们的预设也加载出来了。

  效果如下: