方法调用

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源码：

using UnityEngine;
using System.Collections;
using LuaInterface;
using System;

public class CallLuaFunction : MonoBehaviour
{
    private string script =
        @"  function luaFunc(num)
                return num+1
            end
            test={}
            test.luaFunc=luaFunc 
        ";

    LuaFunction luaFunc = null;
    LuaState lua = null;
    string tips = null;

    void Start()
    {
#if UNITY_5 || UNITY_2017 || UNITY_2018
        Application.logMessageReceived += ShowTips;
#else
        Application.RegisterLogCallback(ShowTips);
#endif
        new LuaResLoader();
        lua = new LuaState();
        lua.Start();
        DelegateFactory.Init();
        lua.DoString(script);

        //Get the function object
        luaFunc = lua.GetFunction("test.luaFunc");

        if (luaFunc != null)
        {
            int num = luaFunc.Invoke<int, int>(123456);
            Debugger.Log("generic call return: {0}", num);

            num = CallFunc();
            Debugger.Log("expansion call return: {0}", num);

            Func<int, int> Func = luaFunc.ToDelegate<Func<int, int>>();
            num = Func(123456);
            Debugger.Log("Delegate call return: {0}", num);

            num = lua.Invoke<int, int>("test.luaFunc", 123456, true);
            Debugger.Log("luastate call return: {0}", num);
        }

        lua.CheckTop();
    }

    void ShowTips(string msg, string stackTrace, LogType type)
    {
        tips += msg;
        tips += "\r\n";
    }

#if !TEST_GC
    void OnGUI()
    {
        GUI.Label(new Rect(Screen.width / 2 - 200, Screen.height / 2 - 150, 400, 300), tips);
    }
#endif

    void OnDestroy()
    {
        if (luaFunc != null)
        {
            luaFunc.Dispose();
            luaFunc = null;
        }

        lua.Dispose();
        lua = null;

#if UNITY_5 || UNITY_2017 || UNITY_2018
        Application.logMessageReceived -= ShowTips;
#else
        Application.RegisterLogCallback(null);
#endif
    }

    int CallFunc()
    {
        luaFunc.BeginPCall();
        luaFunc.Push(123456);
        luaFunc.PCall();
        int num = (int)luaFunc.CheckNumber();
        luaFunc.EndPCall();
        return num;
    }
}

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原文输出：

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代码看上去是方法的4种调用方式，尝试修改下试试：

        //Get the function object
        luaFunc = lua.GetFunction("test.luaFunc");

        if (luaFunc != null)
        {
            //修改参数
            int num = luaFunc.Invoke<int, int>(1234);
            Debugger.Log("generic call return: {0}", num);

            //方法主体在下方，不进行修改
            num = CallFunc();
            Debugger.Log("expansion call return: {0}", num);

            //通过委托 获取到toLua方法 修改参数
            Func<int, int> Func = luaFunc.ToDelegate<Func<int, int>>();
            num = Func(12345);
            Debugger.Log("Delegate call return: {0}", num);
            
            //修改参数
            num = lua.Invoke<int, int>("test.luaFunc", 1234567, true);
            Debugger.Log("luastate call return: {0}", num);
        }

修改之后结果按猜想的一样进行了变动，看了下底层机制<int,int> 前一个为形参类型，后一个为方法返回值类型