[Unity热更新]LuaFramework08.修改加载方式

框架使用AB包的方式来加载资源，这样意味着如果资源出现了变更，那么就要重新打包，这样才能加载出最新的资源。为了加快开发效率，可以使用AssetDatabase的形式来加载资源

0.

如下，用两种方式去加载cube

using UnityEngine;
using UnityEditor;

public class TestAB : MonoBehaviour
{
    public bool isAssetBundle = true;

    void Start()
    {
        if (isAssetBundle)
        {
            AssetBundle cubeAB = AssetBundle.LoadFromFile("Assets/StreamingAssets/cube");
            GameObject go = null;
            if (cubeAB != null)
            {
                go = Instantiate(cubeAB.LoadAsset<GameObject>("cube"));
                go.transform.localScale = Vector3.one * 2;
            }
        }
        else
        {
#if UNITY_EDITOR
            GameObject cubeAsset = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Prefab/Cube.prefab");
            GameObject go = Instantiate(cubeAsset);
            go.transform.localScale = Vector3.one * 10;
#endif
        }
    }
}

1.

统一加载路径

使用AB包时，路径为：Assets/StreamingAssets/cube，而且还需要提供资源名：cube

使用AssetDatabase时，路径为：Assets/Prefab/Cube.prefab，注意需要提供后缀

首先，打包时一般以文件夹为单位，因此这里需要对Prefab文件夹进行打包，Cube.prefab即为Prefab包内的资源。

然后，对于AssetDatabase，其路径是没有大小写敏感的，需要提供后缀。

using UnityEngine;
using UnityEditor;
using System;
using UObject = UnityEngine.Object;

public class TestAB : MonoBehaviour
{
    public bool isAssetBundle = true;

    void Start()
    {
        Load("Prefab/Cube.prefab", (obj) => {
            GameObject go = Instantiate(obj) as GameObject;
            go.transform.localScale = Vector3.one * 5;
        });
    }

    //path:Assets下的路径
    private void Load(string path, Action<UObject> cb)
    {
        if (isAssetBundle)
        {
            path = "Assets/StreamingAssets/" + path;
            path = path.Substring(0, path.LastIndexOf("."));
            string assetBundleName = path.Substring(0, path.LastIndexOf("/"));
            string assetName = path.Substring(path.LastIndexOf("/") + 1);
            Debug.LogWarning(assetBundleName);
            Debug.LogWarning(assetName);

            AssetBundle assetBundle = AssetBundle.LoadFromFile(assetBundleName);
            if (assetBundle != null)
            {
                UObject asset = assetBundle.LoadAsset<UObject>(assetName);
                if (cb != null && asset != null)
                {
                    cb(asset);
                }
            }
        }
        else
        {
#if UNITY_EDITOR
            path = "Assets/" + path;
            UObject asset = AssetDatabase.LoadAssetAtPath<UObject>(path);
            if (cb != null && asset != null)
            {
                cb(asset);
            }
#endif
        }
    }
}

2.

修改框架源码

ResourceManager.cs

Packager.cs

3.

调用