C#调用LUA函数

using UnityEngine;
using System.Collections;
using LuaInterface;

public class testLUACALL : MonoBehaviour {

    // Use this for initialization
    void Start () {
        LuaState S = new LuaState();
        if (S == null) return;
        S.Start();

        S.DoFile("test1.lua");
        S.DoFile("test2.lua");

        LuaFunction lf = S.GetFunction("cdata.init");
        if (lf == null)
        {
            Debug.Log("lf == null------------------");
            return;
        }

        LuaTable lb = S.GetTable("cdata");

        lf.BeginPCall();
        lf.Push(lb);
        lf.Push("hello");
        lf.Push();
        lf.PCall();
        lf.EndPCall();

        LuaFunction lf2 = S.GetFunction("ctest.initdata");
        if (lf2 == null)
        {
            Debug.Log("lf2 == null-------------------");
            return;
        }

    }

    // Update is called once per frame
    void Update () {

    }
}

test1.lua

cdata = {
    x =
}

function function_name( )
    -- body
end

cdata.init = function(self, str, num )
    print("------------------" .. str .. "," .. num .. "-------------------")
    print(self)
    print(cdata)
    print(self.x)
end

cdata.update = function(self )

end