AssetBundleのサンプルを作成した時のメモ ref: http://qiita.com/uchiko/items/91de62f4cc2d243b479f

CachingLoadExample.cs

using UnityEngine;
using System.Collections;

public class CachingLoadExample : MonoBehaviour
{
    string bundleURL = "http://localhost:9000/assets/StreamingAssets/sprites";
    string assetName = "Test";
    int version = 0;

    void Start()
    {
        StartCoroutine(DownloadAndCache());
    }

    IEnumerator DownloadAndCache()
    {
        while(!Caching.ready)
            yield return null;

        using(WWW www = WWW.LoadFromCacheOrDownload(bundleURL, version)) {
            yield return www;

            if (www.error != null) {
                throw new UnityException("WWW download had an error" + www.error);
            }

            AssetBundle bundle = www.assetBundle;

            Instantiate(bundle.LoadAsset(assetName));

            bundle.Unload(false);
        }
    }
}

ExportAssetBundle.cs

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


public class ExportAssetBundle
{
    [MenuItem("Export/AssetBundle")]
    static void Export()
    {
        Directory.CreateDirectory(Application.streamingAssetsPath);
        BuildPipeline.BuildAssetBundles(Application.streamingAssetsPath);
    }
}

LoadAssetBundle.cs

using UnityEngine;
using System.Collections;

public class LoadAssetBundle : MonoBehaviour
{
    string assetName = "Test";

    string AssetPath {
        get {
            return Application.streamingAssetsPath + "/sprites";
        }
    }

    IEnumerator Start()
    {
        var resultAssetBundle = AssetBundle.LoadFromFileAsync(AssetPath);

        yield return new WaitWhile(() => resultAssetBundle.isDone == false);

        var assetbundle = resultAssetBundle.assetBundle;
        var resultObject = assetbundle.LoadAssetAsync<GameObject>(assetName);

        yield return new WaitWhile(() => resultObject.isDone == false);

        GameObject.Instantiate(resultObject.asset);
        assetbundle.Unload(false);
    }
}