[Unity] AssetBundle

AssetBundle Build

Assetbundle 만들기

Assetbundle 빌드 스크립트 만들기

using UnityEngine;
using UnityEditor;
using System.IO;

public class BuildAssetBundle : MonoBehaviour
{
    static string assetBundleDirectory = "Assets/AssetBundles";
    [MenuItem("Tools/Build AssetBundles")]
    static void BuildAllAssetBundles()
    {
        if (!Directory.Exists(assetBundleDirectory))
        {
            Directory.CreateDirectory(assetBundleDirectory);
        }
#if UNITY_ANDROID
        BuildPipeline.BuildAssetBundles(assetBundleDirectory,
                                        BuildAssetBundleOptions.None, 
                                        BuildTarget.Android);
#elif UNITY_IOS
        BuildPipeline.BuildAssetBundles(assetBundleDirectory,
                                        BuildAssetBundleOptions.None, 
                                        BuildTarget.StandaloneOSXUniversal)
#else
        BuildPipeline.BuildAssetBundles(assetBundleDirectory, 
                                        BuildAssetBundleOptions.None, 
                                        BuildTarget.StandaloneWindows64);
#endif
    }
}

Load AssetBundle

1. Local

   using UnityEngine;
   using UnityEngine.Networking;
   using System.IO;
   public class Assetbundleload : MonoBehaviour
   {
    [SerializeField]
    AssetBundle assetbundle;
   
    private void Start()
    {
        // AsssetBundle의 로컬 패스
        string assetBundleDirectory = 
            Application.dataPath + "/AssetBundles/prefabs.cube";
        // AssetBundle로드
        assetbundle = AssetBundle.LoadFromFile(assetBundleDirectory);
        // AssetBundle로부터 원하는 에셋 로드
        GameObject prefab = assetbundle.LoadAsset<GameObject>("Cube");
        Instantiate(prefab);
    }
   }

2. Wab

   using UnityEngine;
   using UnityEngine.Networking;
   using System.IO;
   public class Assetbundleload : MonoBehaviour
   {
    [SerializeField]
    AssetBundle assetbundle;
   
    private void Start()
    {
        StartCoroutine(InstantiateObject());
    }
   
    IEnumerator InstantiateObject()
    {
        // AssetBundle의 web url (예제에선 local path)
        string assetBundleDirectory =
            "file:///" + Application.dataPath+"/AssetBundles/prefabs.cube";
        // 웹요청
        UnityWebRequest request =
            UnityWebRequestAssetBundle.GetAssetBundle(assetBundleDirectory, 0);
   
        yield return request.SendWebRequest();
   
        // 웹에서 AssetBundle을 받아옴
        assetbundle = DownloadHandlerAssetBundle.GetContent(request);
        // 받아온 AssetBundle로부터 원하는 에셋 로드
        GameObject prefab = assetbundle.LoadAsset<GameObject>("Cube");
        Instantiate(prefab);
    }
   }