lua 环境设置

来源：互联网发布：js 设置session属性值编辑：程序博客网时间：2024/06/06 10:48

1.下载lua库

2.引用src目录下，除lua.c 和 luac.c的源文件到工程目录下

3.如果使用了std的话，可能需要关闭 C4996 警告(_CRT_SECURE_NO_DEPRECATE)

#include<iostream>  using namespace std;#include <stdio.h>extern "C"{#include "../luaLib/lua.h" #include "../luaLib/lualib.h"  #include "../luaLib/lauxlib.h"}// 求平均，供lua脚本调用 static int average(lua_State *L){//返回栈中元素的个数  int n = lua_gettop(L);double sum = 0;int i;for (i = 1; i <= n; i++){if (!lua_isnumber(L, i)){lua_pushstring(L, "Incorrect argument to 'average'");lua_error(L);}sum += lua_tonumber(L, i);}/* push the average */lua_pushnumber(L, sum / n);/* push the sum */lua_pushnumber(L, sum);/* return the number of results */return 2;}void luaCallCpp(){printf("luaCallCpp test begin..\r\n");/* initialize Lua */lua_State *L = luaL_newstate();/* load Lua libraries */luaL_openlibs(L);/* register our function */lua_register(L, "average", average);/* run the script */luaL_dofile(L, "../luaScripts/luaCallCpp.lua");/* cleanup Lua */lua_close(L);getchar();}void cppCallLua(){printf("cppCallLua test begin..\r\n");/* initialize Lua */lua_State *L = luaL_newstate();/* load Lua libraries */luaL_openlibs(L);//luaL_loadfile(L, "../luaScripts/cppCallLua.lua");//lua_pcall(L, 0, 0, 0);luaL_dofile(L, "../luaScripts/cppCallLua.lua");lua_getglobal(L, "printHelloWorld");lua_pcall(L, 0, 0, 0);lua_getglobal(L, "printHelloSomebody");lua_pushstring(L, "itol");lua_pcall(L, 1, 0, 0);// 1参数0返回值lua_getglobal(L, "sortNum");lua_pushinteger(L, 3);lua_pushinteger(L, 5);lua_pcall(L, 2, 2, 0);// 2参数2返回值 int n1 = lua_tointeger(L, -1);int n2 = lua_tointeger(L, -2);printf("n1 = %d; n2 = %d", n1, n2);/* cleanup Lua */lua_close(L);getchar();}void main(){//luaCallCpp();cppCallLua();}

luaCallCpp.lua:

function printHelloWorld()print("hello world!");endfunction printHelloSomebody(sb)print("hello "..sb);endfunction sortNum(n1, n2)local tmp;if n1 > n2 thentmp = n1;n1 = n2;n2 = tmp;endreturn n1, n2;end

cppCallLua.lua:

avg, sum = average(10, 20, 30, 40, 50)-- 调用C++代码的average函数print("The average is ", avg)print("The sum is ", sum)

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