风宇冲 Unity3D教程宝典之AssetBundles:第一讲

原创文章如需转载请注明：转载自风宇冲Unity3D教程学院

1. usingUnityEngine;
2. usingUnityEditor;
3. publicclassExportAssetBundles{
4. [MenuItem("Assets/BuildAssetBundle From Selection - Track dependencies")]
5. staticvoidExportResource() {
6. // Bring up save panel
7. stringpath=EditorUtility.SaveFilePanel ("SaveResource","","NewResource","unity3d");
8. if(path.Length!=0) {
9. // Build the resource file fromthe active selection.
10. Object[] selection=Selection.GetFiltered(typeof(Object),SelectionMode.DeepAssets);
11. BuildPipeline.BuildAssetBundle(Selection.activeObject,selection,
12. path,BuildAssetBundleOptions.CollectDependencies|BuildAssetBundleOptions.CompleteAssets
13. ,BuildTarget.StandaloneWindows);
14. Selection.objects =selection;
15. }
16. }
17. [MenuItem("Assets/BuildAssetBundle From Selection - No dependency tracking")]
18. staticvoidExportResourceNoTrack() {
19. // Bring up save panel
20. stringpath=EditorUtility.SaveFilePanel ("SaveResource","","NewResource","unity3d");
21. if(path.Length!=0) {
22. // Build the resource file fromthe active selection.
23. BuildPipeline.BuildAssetBundle(Selection.activeObject,Selection.objects,path);
24. }
25. }
26. }

对上面代码仅需修改第11行。将BuildPipeline.BuildAssetBundle(Selection.activeObject,selection,

path,BuildAssetBundleOptions.CollectDependencies|BuildAssetBundleOptions.CompleteAssets

,BuildTarget.StandaloneWindows);里的第一个参数mainAsset去掉，并在selection也就是Object[]之后加string[]assetName即可

1. [MenuItem("Assets/BuildAssetBundle From Selection Names- Trackdependencies")]
2. staticvoidExportResourceWithNames() {
3. // Bring up savepanel
4. stringpath=EditorUtility.SaveFilePanel("SaveResource","","NewResource","unity3d");
5. if(path.Length!=0) {
6. // Build the resourcefile from the active selection.
7. Object[] selection=Selection.GetFiltered(typeof(Object),SelectionMode.DeepAssets);
8. string[] names=newstring[selection.Length];
9. for(inti=0;i
10. {
11. names[i] =i+"_"+selection[i].name;
12. }
13. BuildPipeline.BuildAssetBundleExplicitAssetNames(selection,names,
14. path,BuildAssetBundleOptions.CollectDependencies|BuildAssetBundleOptions.CompleteAssets
15. ,BuildTarget.StandaloneWindows);
16. Selection.objects= selection;
17. }
18. }

1. usingSystem;
2. usingSystem.IO;
3. usingUnityEngine;
4. 
   
5. publicclassLoadAssetBundle:MonoBehaviour{
6. privateAssetBundleassetBundle;
7. privateAssetBundleCreateRequestrequest;
8. 
   
9. voidUpdate () {
10. }
11. voidOnGUI()
12. {
13. if(GUI.Button(newRect(0,0,100,50),"Load"))
14. {
15. byte[] bs =File.ReadAllBytes(Application.dataPath+"/withNames.unity3d");
16. request=AssetBundle.CreateFromMemory(bs);
17. }
18. if(GUI.Button(newRect(0,50,100,50),"Check"))
19. {
20. if(request.isDone==true)
21. {
22. assetBundle = request.assetBundle;
23. UnityEngine.Objectobj =assetBundle.Load("0_Cube");
24. Instantiate(obj);
25. }
26. }
27. }

1. usingUnityEngine;
2. usingUnityEditor;
3. 
   
4. public classBuildScene:MonoBehaviour{
5. [MenuItem("Build/BuildWebplayerStreamed")]
6. staticvoidBuildScenes()
7. {
8. string[] levels=newstring[1];
9. levels[0] ="Assets/scene.unity";
10. BuildPipeline.BuildStreamedSceneAssetBundle(levels,"Assets/myLevel.unity3d",BuildTarget.StandaloneOSXIntel);
11. }
12. }

1. using System;
2. using System.IO;
3. using UnityEngine;
4. public class LoadAssetBundle : MonoBehaviour {
5. privateAssetBundle assetBundle;
6. privateAssetBundleCreateRequest request;
7. voidUpdate () {
8. if(request!=null)
9. print(request.progress);
10. }
12. voidOnGUI()
13. {
14. if(GUI.Button(new Rect(0,0,100,50),"Load"))
15. {
16. byte[] bs =File.ReadAllBytes("D:/myBundle.unity3d");
17. request =AssetBundle.CreateFromMemory(bs);
18. }
21. if(GUI.Button(new Rect(0,50,100,50),"Check"))
22. {
23. if(request.isDone == true)
24. {
25. print("name:"+request.assetBundle.mainAsset.name);
26. Instantiate(request.assetBundle.mainAsset);
27. }
28. }
29. }
30. }

1. using System;
2. using System.IO;
3. using UnityEngine;
4. using System.Collections;
5. public class LoadAssetBundle : MonoBehaviour {
6. privateAssetBundle assetBundle;
7. privatestring address ="http://127.0.0.1/AssetBundles/myBundle.unity3d";
9. voidOnGUI()
10. {
11. if(GUI.Button(new Rect(0,0,100,50),"Load web"))
12. {
13. StartCoroutine(Load());
14. }
15. }
17. IEnumerator Load() {
18. // Download the file from theURL. It will not be saved in the Cache
19. stringAssetName="";
20. WWW www = newWWW(address);
21. yield return www;
22. if (www.error != null)
23. throw new Exception("WWWdownload had an error:" + www.error);
24. AssetBundle bundle =www.assetBundle;
25. if (AssetName == "")
26. Instantiate(bundle.mainAsset);
27. else
28. Instantiate(bundle.Load(AssetName));
29. // Unload the AssetBundles compressed contents to conservememory
30. bundle.Unload(false);
31. }
32. }

1. using System;
2. using System.IO;
3. using UnityEngine;
4. using System.Collections;
5. public class LoadAssetBundle : MonoBehaviour {
6. privateAssetBundle assetBundle;
7. privatestring address ="http://127.0.0.1/AssetBundles/myBundle.unity3d";
9. voidOnGUI()
10. {
11. if(GUI.Button(new Rect(0,0,100,50),"Load web"))
12. {
13. StartCoroutine(Load());
14. }
15. }
17. IEnumerator Load() {
18. stringAssetName="";
19. WWW www =WWW.LoadFromCacheOrDownload(address,1);
20. yield return www;
21. if (www.error != null)
22. throw new Exception("WWWdownload had an error:" + www.error);
23. AssetBundle bundle =www.assetBundle;
24. if (AssetName == "")
25. Instantiate(bundle.mainAsset);
26. else
27. Instantiate(bundle.Load(AssetName));
28. // Unload the AssetBundles compressed contents to conservememory
29. bundle.Unload(false);
30. }
31. }

1. //******************************************************
2. //AssetBundle.CreateFromMemory -> LoadLevel
3. //******************************************************
4. usingSystem;
5. usingSystem.IO;
6. usingUnityEngine;
7. 
   
8. public classLoadAssetBundle:MonoBehaviour{
9. private AssetBundleassetBundle;
10. private AssetBundleCreateRequestrequest;
11. 
    
12. voidUpdate () {
13. }
14. voidOnGUI()
15. {
16. if(GUI.Button(newRect(0,0,100,50),"Load"))
17. {
18. byte[] bs =File.ReadAllBytes(Application.dataPath+"/myLevel.unity3d");
19. request=AssetBundle.CreateFromMemory(bs);
20. }
21. if(GUI.Button(newRect(0,50,100,50),"Check"))
22. {
23. if(request.isDone ==true)
24. {
25. Application.LoadLevel("scene");
26. }
27. }
28. }
29. }

其中推荐LoadFromCacheOrDownload。不推荐CreateFromMemory，因为需要一个解析建AB结构的过程，比较耗时。CreateFromFile也不是很推荐，因为只支持非压缩格式，所以占容量比较多。

预制体打包成AssetBundle时：预制体可以搭脚本，并且指定关系等都可以照常使用。

要求：

(1)但是脚本必须是工程里有的

(2)AssetBundle里预制体上搭载的脚本必须和工程里的脚本一致。

否则会提示错误。

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