參考文檔
lua所有的一切盡在一本小冊:Lua 5.0 Reference Manual
pdf: http://www.lua.org/ftp/refman-5.0.pdf.
html:http://www.lua.org/manual/5.1/
LuaPlus Callback Dispatcher 1.00
http://wwhiz.com/LuaPlus/LuaPlusCallDispatcher.html
LuaPlus for Lua 5.01 Distribution
http://wwhiz.com/LuaPlus/LuaPlus.html
Lua:Tutorials:Scripting with LuaPlus and Cpp
http://www.gpwiki.org/index.php/Lua:Tutorials:Scripting_with_LuaPlus_and_Cpp
lua維基
http://zh.wikipedia.org/wiki/Lua
http://en.wikipedia.org/wiki/Lua_(programming_language)
C++中使用Lua腳本 和lua中調用c的方法
http://www.cnweblog.com/fly2700/archive/2010/02/09/282920.html
Calling C++ Functions From Lua
http://gamedevgeek.com/tutorials/calling-c-functions-from-lua/
設置lua環境
extern "C"
{
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
}load script
//--test.lua
//function add(x,y)
//return x+y
//end
//print("1+2" , add(1,2))
int _tmain(int argc, _TCHAR* argv[])
{
lua_State* L = lua_open();
luaopen_base(L);
/**//* load the script */
luaL_dofile(L, "test.lua"); // 讀取Lua源文件到內存編譯
lua_close( L);
return 0;
}
call lua
//--hellow.lua
//function add(x,y)
//print("x+y=" , x+y );
//return
//end
//
//--print(dddd)
//add(1 , 2)
double fun(lua_State* L , double x, double y )
{
double ret;
lua_getglobal( L, "add");
lua_pushnumber( L,x);
lua_pushnumber( L,y);
lua_call( L, 2, 1);
ret = lua_tonumber( L, -1);
lua_pop( L, 1);
return ret;
}
int _tmain(int argc, _TCHAR* argv[])
{
int error;
// 創建Lua接口指針
lua_State* L = lua_open();
// 加載Lua基本庫
luaopen_base(L);
// 加載Lua通用擴展庫
luaL_openlibs(L);
/**//* load the script */
error = luaL_dofile(L, "test.lua");
srand( time(0) );
while(1)
{
int alpha = rand();
int beta = rand();
int ret = fun(L , alpha , beta );
printf("%d " , ret);
}
lua_close( L);
return 0;
}
lua call c
//--luacallc.lua
//avg = average(20 , 30 , 4)
//print("lua got average value:" , avg)
//被lua調用的方法
static int average(lua_State * L)
{
/**//* get number of arguments */
int n = lua_gettop(L);
int sum=0;
/**//* loop through each argument */
for (int i = 1; i <= n; i++)
{
/**//* total the arguments */
sum += lua_tonumber(L, i);
}
lua_pushnumber(L, sum / n);
/**//* return the number of results */
printf("c average called. [ok]\n");
return 1;
}
int _tmain(int argc, _TCHAR* argv[])
{
int error;
// 創建Lua接口指針
lua_State* L = lua_open();
// 加載Lua基本庫
luaopen_base(L);
// 加載Lua通用擴展庫
luaL_openlibs(L);
lua_register(L, "average", average);
/**//* load the script */
error = luaL_dofile(L, "luacallc.lua"); // 讀取Lua源文件到內存編譯
lua_close( L);
return 0;
}
lua call C++ object(lua way)
//--luacallcplusfun.lua
//
//o = obj();
//o:set( 50 );
//o:get();
//print("lua got average value:" , avg)
class obj
{
public:
obj() : val( 0 ) {}
void set( double v )
{
val = v;
}
double get( void )
{
return val;
}
private:
double val;
};
class lua_bind
{
public:
static void reg( lua_State* L )
{
lua_newtable( L );
int tbl = lua_gettop( L );
luaL_newmetatable( L, "obj" );
int meta_tbl = lua_gettop( L );
lua_pushliteral( L, "__metatable" );
lua_pushvalue( L, tbl );
lua_settable( L, meta_tbl );
lua_pushliteral( L, "__index" );
lua_pushvalue( L, tbl );
lua_settable( L, meta_tbl );
lua_pushliteral( L, "__gc" );
lua_pushcfunction( L, gc );
lua_settable( L, meta_tbl );
lua_pop( L, 1 );
luaI_openlib( L, 0, functions, 0 );
lua_pop( L, 1 );
lua_register( L, class_name, build );
}
static int build( lua_State* lua )
{
obj* p = new obj();
*( void** )( lua_newuserdata( lua, sizeof( void* ) ) ) = p;
luaL_getmetatable( lua, class_name );
lua_setmetatable( lua, -2 );
cout << "build object, val is 0" << endl;
return 1;
}
static int gc( lua_State* lua )
{
obj* p = ( obj* )( *( void** )( lua_touserdata( lua, 1 ) ) );
delete p;
cout << "object gc" << endl;
return 0;
}
static int set_val( lua_State* lua )
{
obj* p = ptr( lua, 1 );
double val = luaL_checknumber( lua, 2 );
p->set( val );
cout << "set value to " << val << endl;
return 0;
}
static int get_val( lua_State* lua )
{
obj* p = ptr( lua, 1 );
double val = p->get();
lua_pushnumber( lua, val );
cout << "get value is " << val << endl;
return 1;
}
static obj* ptr( lua_State* lua, int narg )
{
luaL_checktype( lua, narg, LUA_TUSERDATA );
void* ud = luaL_checkudata( lua, narg, class_name );
if( ud )
return *( obj** )ud;
luaL_typerror( lua, narg, class_name );
return 0;
}
static const char class_name[];
static const luaL_reg functions[];
};
const char lua_bind::class_name[] = "obj";
const luaL_reg lua_bind::functions[] =
{
{ "set", lua_bind::set_val },
{ "get", lua_bind::get_val },
{ 0, 0 }
};
int _tmain(int argc, _TCHAR* argv[])
{
lua_State* L = lua_open();
lua_bind::reg( L );
luaL_dofile( L, "luacallcplusobj.lua" );
lua_close( L);
return 0;
}
lua call C++ object(luaplus way)