Unity API HOOK 之妙用

产品要做国际化，而一开始没做这方面的考虑，传统 方式修改起来很麻烦。所以决定从API调用处入手，直接替换为国际化音频。

下图是策划给过来的音频文档。

Paste_Image.png

把它转换为xml

核心代码如下

Paste_Image.png

原理： 签名相同的情况下，C#调用会优先找自身程序集的代码实现。

#if RESOURCESHOOK

using UnityEngine;
using System;
using Object = UnityEngine.Object;
using Babybus.Framework.Serialization;
using System.Collections.Generic;

public class AudioMapping
{
    public string id;
    public string zh;

    private static Dictionary<string, string> ids = new Dictionary<string, string>();

    static AudioMapping()
    {
        var bytes = UnityEngine.Resources.Load<TextAsset>("配置/AudioMapping").bytes;
        var list = XmlUtility.DeserializeXml<List<AudioMapping>>(bytes);

        foreach (var item in list)
        {
            if (string.IsNullOrEmpty(item.zh))
                continue;

            ids[item.zh] = item.id;
        }
    }

    public static string GetId(string zh)
    {
        var index = zh.LastIndexOf('/');
        if (index != -1)
            zh = zh.Substring(index + 1);

        var id = "";
        if (!ids.TryGetValue(zh, out id))
            return "";

        return id;
    }
}

public class Resources
{
    public static Object[] FindObjectsOfTypeAll(Type type)
    {
        return UnityEngine.Resources.FindObjectsOfTypeAll(type);
    }

    public static T[] FindObjectsOfTypeAll<T>() where T : Object
    {
        return UnityEngine.Resources.FindObjectsOfTypeAll<T>();
    }

    public static Object GetBuiltinResource(Type type, string path)
    {
        return UnityEngine.Resources.GetBuiltinResource(type, path);
    }

    public static T GetBuiltinResource<T>(string path) where T : Object
    {
        return UnityEngine.Resources.GetBuiltinResource<T>(path);
    }

    public static Object Load(string path)
    {
        return UnityEngine.Resources.Load(path);
    }

    public static Object Load(string path, Type systemTypeInstance)
    {
        if (systemTypeInstance == typeof(AudioClip))
        {
            var id = AudioMapping.GetId(path);
            if(id != "")
                path = "Audios/en/" + id;
        }

        return UnityEngine.Resources.Load(path, systemTypeInstance);
    }

    public static T Load<T>(string path) where T : Object
    {
        return Load(path, typeof(T)) as T;
    }

    public static Object[] LoadAll(string path)
    {
        return UnityEngine.Resources.LoadAll(path);
    }

    public static Object[] LoadAll(string path, Type systemTypeInstance)
    {
        return UnityEngine.Resources.LoadAll(path, systemTypeInstance);
    }

    public static T[] LoadAll<T>(string path) where T : Object
    {
        return UnityEngine.Resources.LoadAll<T>(path);
    }

    public static ResourceRequest LoadAsync(string path)
    {
        return UnityEngine.Resources.LoadAsync(path);
    }


    public static ResourceRequest LoadAsync(string path, Type type)
    {
        return UnityEngine.Resources.LoadAsync(path, type);
    }

    public static ResourceRequest LoadAsync<T>(string path) where T : Object
    {
        return UnityEngine.Resources.LoadAsync(path);
    }

    public static void UnloadAsset(Object assetToUnload)
    {
        UnityEngine.Resources.UnloadAsset(assetToUnload);
    }

    public static AsyncOperation UnloadUnusedAssets()
    {
        return UnityEngine.Resources.UnloadUnusedAssets();
    }
}

#endif