利用XLua写前端逻辑

思路：新建一个通用的LuaCustomCommon类挂在需要用lua实现逻辑的prefab上。通过这个组件关联名为Panel的lua脚本，生成对应的LuaTable，通过这个组件为lua赋值对应prefab的属性，并在Start()，Update()等生命周期方法中通过LuaTable.Get(“MethodName”);调用lua中对应的方法。在lua中使用transform:Find(“name”)来关联prefab中的组件，通过这个LuaCustomCommon类就可以把前端的逻辑放在Lua脚本中。
先写一个通用的管理类用来管理Xlua：

public class XluaCommon
{
    private static XluaCommon _instance;
    public static XluaCommon Instance
    {
        get
        {
            if (_instance==null)
            {
                _instance = new XluaCommon();
            }
            return _instance;
        }

    }

    public LuaEnv luaEnv
    {
        private set;
        get;
    }

    public XluaCommon()
    {
        luaEnv = new LuaEnv();

        luaEnv.AddLoader(CustomerLoader);
    }

    //自定义Load
    byte[] CustomerLoader(ref string flie)
    {
        string fliePath = Application.dataPath + "/Scripts/luaTxt/" + flie + ".lua.txt";
        return System.Text.Encoding.UTF8.GetBytes(File.ReadAllText(fliePath));
    }

    //加载lua表
    public void LoadLuaTable(string name)
    {
        if (string.IsNullOrEmpty(name))
        {
            Debug.Log("name is null");
            return;
        }
        string flieName = string.Format("require'{0}'",name);
        luaEnv.DoString(flieName);
    }
    //得到Lua表
    public LuaTable GetLuaTable(string name,string Testid)
    {
        if (string.IsNullOrEmpty(name))
        {
            Debug.Log("name is null");
            return null;
        }
        LuaTable table = luaEnv.Global.Get<LuaTable>(name);
        if (table==null)
        {
            //加载
            LoadLuaTable(name);
            table = luaEnv.Global.Get<LuaTable>(name);
        }
        return table;
    }

   // delegate void test(int id);

    public void Dispose()
    {

        Dispose(true);
    }
    private  void Dispose(bool isDispose)
    {
        if (isDispose)
        {
            if (luaEnv!=null)
            {
                luaEnv.GC();
                luaEnv.Dispose();
            }
        }
        //置空
        luaEnv = null;
        _instance = null;
    }

    //回收
    ~XluaCommon()
    {
        Dispose(false);
    }

}

通用的LuaCustomCommon类：

public class LuaCustomCommon : MonoBehaviour
{
    //定义的Lua文件名字
    public string luaPanelName;

    Action lua_Update;

    public LuaTable luaTable
    {
        private set;
        get;
    }

    public bool LoadLuaFile()
    {
        if (string.IsNullOrEmpty(luaPanelName))
        {
            Debug.Log("luaPanelName is null");
            return false;
        }
        string s = "id";
        luaTable = XluaCommon.Instance.GetLuaTable(luaPanelName,s);
        if (luaTable==null)
        {
            Debug.Log("luaTable is null");
            return false;
        }
        luaTable.Set("transform", transform);

        lua_Update = luaTable.Get<Action>("Update");
        return true;
    }

    //调用Lua中的方法
    private void CallLuaFunction(string Name)
    {
        if (string.IsNullOrEmpty(Name))
        {
            Debug.Log("luafunction is null");
            return;
        }
        Action func = luaTable.Get<Action>(Name);
      //  Debug.Log("func:"+(func==null)+" 原luaTable:"+ (luaTable==null));
        if (func != null)
        {
            func();
        }
    }

 

    private void Awake()
    {

        if (LoadLuaFile())
        {
            //Debug.Log("Awake为true!");
            CallLuaFunction("awake");
        }
        else
        {
            Debug.Log("加载" + luaPanelName + "文件失败");
        }
    }

    void Start()
    {
        //如果是 Add component 的情况，会导致Tabel = null  应该在Add component 后调用一次LoadLuaFile()
        if (luaTable==null)
        {
            if (string.IsNullOrEmpty(luaPanelName))
            {
                Debug.Log("luaPanelName is null");
                return;
            }
            if (!LoadLuaFile())
            {
                Debug.Log("LoadLuaFile is false");
                return;
            }
        }

        CallLuaFunction("start");
    }


    void Update()
    {
        if (lua_Update!=null)
        {
            lua_Update();
        }
    }

    private void OnEnable()
    {
        CallLuaFunction("onEnable");
    }

    private void OnDisable()
    {
        CallLuaFunction("onDisable");
    }

    private void OnDestroy()
    {
        CallLuaFunction("onDestroy");
        lua_Update = null;
        luaTable.Dispose();
        luaTable = null;

    }

}

Lua脚本代码：

Panel={}
this=Panel

print("加载成功！")


function this.awake()
    print('awake')
end

function this.start()
   print('Start')
end

function this.Update()
    print("update!")
end

function this.onEnable()
    print('OnEnable')
end

function this.onDisable()
    print('OnDisable')
end

function this.onDestroy()
    print('OnDestroy')
end 

脚本挂载的位置：

输出结果：