tolua里C#与lua互调

女爷i 2022-07-13 04:30 229阅读 0赞

tolua里C\#与lua互调，本文主要讲的是C\#调lua方法，下面贴上代码

C\#

using System;
    using UnityEngine;
    using UnityEditor;
    using LuaInterface;
    public class LuaBehavior : MonoBehaviour
    {
        private const string luaPath = "Assets/StreamingAssets/LuaScripts/";
        public string luaFullPath;
        public string luaName;
        private LuaState lua;
    
        private int m_ClassRef = -1;//the lua class ref
        private int m_BindLuaRef = -1;//the lua class bind class ref
        private int m_StartRef = -1;//the 'Start' function of lua
        private int m_OnDestroyRef = -1;// the 'OnDestroy' function of lua
    
        void Awake()
        {
            lua = new LuaState();
            lua.Start();
        }
    
        void Start()
        {
            if (lua.LuaDoFile(luaPath + luaFullPath))
            {
                Debug.Log("Load file success: fileName = " + luaFullPath);
            }
            lua.LuaGetGlobal("FirstLua");
            m_ClassRef = lua.LuaRef(-1);
            if (m_ClassRef == LuaDLL.LUA_REFNIL)
            {
                Debug.LogError("not find the ref object");
            }
            lua.LuaGetGlobal("FirstLua");
            lua.LuaRawSetI(LuaIndexes.LUA_REGISTRYINDEX, m_ClassRef);
    
            lua.LuaGetGlobal("FirstLua");
            lua.LuaGetField(-1, "Start");
            lua.LuaRawGetI(LuaIndexes.LUA_REGISTRYINDEX, m_ClassRef);
            lua.PCall(1, 0);
            lua.LuaPop(1);
    
            lua.LuaGetGlobal("FirstLua");
            lua.LuaGetField(-1, "Function1");
            lua.PCall(0, 0);
            lua.LuaPop(1);
    
            LuaFunction func = lua.GetFunction("Function2");
            if (func == null)
            {
                Debug.Log("Func is Null");
            }
            func.Call();
            func.Dispose();
    
    
        }
    
        void OnDestroy()
        {
    
        }
    
    }

Lua代码

--Created By: xikuo yu
    --Time: 2016-12-24
    
    FirstLua = {}
    setmetatable({},FirstLua)
    function FirstLua:Start()
    	if self == nil then
    		print("FirstLua Start self is nil")
    	else
    		print("FirstLua Start")
    		self:OnDestroy()
    	end
    end
    
    function FirstLua:OnDestroy()
    	print("OnDestroy")
    end
    
    function FirstLua.Function1()
    	if self == nil then
    		print("FirstLua Function1 self is nil")
    	else
    		print("FirstLua Function1")
    	end
    end
    
    function Function2()
    	print("Function2")
    end

lua有3中方法，1）带冒号（：）方法，需要有lua表名通过冒号调用，或者传入对应的一个lua表，即方法默认第一个对象为lua表自身，即self。2）带点（.）方法，需要由lua表名通过点操作符调用，方法参数与调用时传入的一直，没有默认的self。3）Global方法，即没有lua表前缀的。

上面C\#代码中展示了C\#调lua的几种方式

![Center][]

=====================2016.12.25====================

注意，今天又试了下lua\_ref的功能，发现tolua的LuaRef是不好使的，总是返回1，然后发现还有一个ToLuaRef，结果返回唯一的ref

void Start()
        {
            if (lua.LuaDoFile(luaPath + luaFullPath))
            {
                Debug.Log("Load file success: fileName = " + luaFullPath);
            }
    
            lua.LuaGetGlobal("FirstLua");
            m_ClassRef = lua.ToLuaRef(); //lua.LuaRef(-1);
            if (m_ClassRef == LuaDLL.LUA_REFNIL)
            {
                Debug.LogError("not find the ref object");
            }
            lua.LuaGetGlobal("FirstLua");
            lua.LuaRawSetI(LuaIndexes.LUA_REGISTRYINDEX, m_ClassRef);
            
            lua.LuaGetGlobal("FirstLua");
            
            lua.LuaGetField(-1, "Start");
            m_StartRef = lua.ToLuaRef();//lua.LuaRef(-1);
            lua.LuaGetField(-1, "Start");
            lua.LuaRawSetI(LuaIndexes.LUA_REGISTRYINDEX, m_StartRef);
           
            lua.LuaGetField(-1, "OnDestroy");
            m_OnDestroyRef = lua.ToLuaRef(); //lua.LuaRef(-1);
            lua.LuaGetField(-1, "OnDestroy");
            lua.LuaRawSetI(LuaIndexes.LUA_REGISTRYINDEX, m_OnDestroyRef);
    
            Debug.Log("first lua = " + m_ClassRef);
            Debug.Log("start ref = " + m_StartRef);
            Debug.Log("destroy ref = " + m_OnDestroyRef);
    
            lua.LuaRawGetI(LuaIndexes.LUA_REGISTRYINDEX, m_StartRef);
            lua.LuaRawGetI(LuaIndexes.LUA_REGISTRYINDEX, m_ClassRef);
            lua.PCall(1, 0);
            lua.LuaPop(1);
            Debug.Log("top " + lua.LuaGetTop());
        }

![Center 1][]

[Center]: /images/20220713/9c12a228aa794da8915d0294cd555b0f.png
[Center 1]: /images/20220713/8c679b35e48c483a9a55267f33844652.png