[learning notes] AssetBundle, xlua, hot update (use steps)

One 、AssetBundle

1、 pack AssetBundle package

① Take the model as an example , Drag the model into a prefab

② Set the preset resource ab Package name and suffix （ Suffix customization has the effect of confusing the public ）; File name plus “/” It can be directly managed as a folder , such as scene/sphere, This will generate a folder after packaging scene There is sphere package

③ Create packaging ab Bag Editor Script （ This script must be placed in Editor In the folder ）

using UnityEditor;
using System.IO;

public class CaretAssetBundle {

    [MenuItem("Assets/Build AssetBundles")]
    static void BuildAssetBundles()
    {
        string dir = "AssetBundles";
        if (!Directory.Exists(dir))
        {
            Directory.CreateDirectory(dir);
        }
        BuildPipeline.BuildAssetBundles(dir, BuildAssetBundleOptions.None, BuildTarget.StandaloneWindows64);
    }
}

 

④ Then in the menu bar Assets/Build AssetBundles Click next to generate ab package .

2、 load AssetBundle package

Local loading mode ： Create a script in the scene , The runtime loads the following code , Can be loaded locally ab Package resources , Asynchronous

	void Start () {
        AssetBundle ab = AssetBundle.LoadFromFile("AssetBundles/cube.unity3d");
        GameObject obj = ab.LoadAsset<GameObject>("Plane");//Plane by cube.unity3d One of the objects in it 
        Instantiate(obj);

        // Record all objects in the package 
        //object[] objs = ab.LoadAllAssets();
        //foreach (Object item in objs)
        //{
        //    Instantiate(item);
        //}
    }

 

Server loading mode ：UnityWebRequest The method applies to 5.x Later versions , yes WWW An upgraded version of

IEnumerator WebLoadAB(){
        // Server load ： Use UnityWebRequest
        string url = @"http://localhost/AssetBundles/cube.unity3d"; 
        UnityWebRequest request = UnityWebRequest.GetAssetBundle(url);
        yield return request.Send();
        AssetBundle ab = (request.downloadHandler as DownloadHandlerAssetBundle).assetBundle;

        //GameObject obj = ab.LoadAsset<GameObject>("Plane");
        //Instantiate(obj);
        object[] objs = ab.LoadAllAssets();
        foreach (Object item in objs)
        {
            Instantiate(item);
        }
}

 

manifest File loading mode ： All packages can be loaded , You can also get package dependencies

manifest In the document CRC, It is judged when the corresponding network is abnormal , If CRC If the code is not correct, the download is not completed , The file is missing and needs to be downloaded again .

3、AssetBundle Grouping and packaging policy

① Rely on packaging ： For multiple models sharing maps 、 Of material assets , Reduce ab Packet size is very effective ; The method is to separate the models 、 Material maps are packaged separately , Such as the A Model 、B Model , Sharing the C Texture mapping , Then give them separately ABC Pack separately , A total of 3 individual assetbundle package , After loading and running ,AB The model is automatically associated C resources . Here's the picture , The bottom three on the right are dependency packaging , The cumulative size of the packages on the left that are not shared with mapped materials will be larger .

4、AssetBundle The uninstall

Resources need to be unloaded when they are not in use , To free up memory

Two 、xLua

To be changed ...

3、 ... and 、 Hot update

To be changed ...