在脚本中使用类的成员函数
#include "luaplus.h"
using namespace LuaPlus;

template< class T >
class LuaExport


{
public:
LuaExport(const char* pszName, LuaPlus::LuaState* pState = 0)

{
//TDAssert(s_pMe == 0);
s_pMe = static_cast< T* >(this);

LuaPlus::LuaState* theState = pState; //? pState : CScriptSystem::_GetLuaState();

s_pMetaTable = new LuaPlus::LuaObject;
*s_pMetaTable = theState->GetGlobals().CreateTable(pszName);
s_pMetaTable->SetObject("__index", *s_pMetaTable);

LuaObject obj = theState->BoxPointer(s_pMe);
obj.SetMetaTable(*s_pMetaTable);
theState->GetGlobals().SetObject(pszName, obj);
}

virtual ~LuaExport()

{
delete s_pMetaTable; s_pMetaTable = 0;
s_pMe = 0;
}

template <class Callee>
void RegisterFunction(const char* pszFuncName, int (Callee::*func)(LuaPlus::LuaState*))

{
s_pMetaTable->RegisterObjectFunctor(pszFuncName, func);
}

//取得自己

static T* GetMe(void)
{ return s_pMe; }

protected:
static T* s_pMe; //自身实例,全局变量
static LuaPlus::LuaObject* s_pMetaTable; //MetaTable

private:
// unimplemented constructors / assignment
LuaExport(const LuaExport& obj);
LuaExport& operator=(const LuaExport& obj);
};

extern LuaPlus::LuaState* GetLuaState();// 测试main.cpp
class player : public LuaExport< player >


{
public:
player():
LuaExport< player >( "pp", GetLuaState() )

{

}

int LS_PrintNumber(LuaState* state)

{
LuaStack args(state);


if (args[2].IsNumber())
{
printf("%f\n", args[2].GetNumber());
}
else if ( args[2].IsString() )

{
printf("%s\n", args[2].GetString() );
}
return 0;
}
int UI_SetTipText( lua_State *state )

{
LuaStack args(state);
if ( args[2].IsString() )

{
const char *szData = args[2].GetString();//lua_tostring(state, 1);
if( szData )

{
printf("%s\n", szData );
}
}

return 0;
}

};


player* LuaExport< player >::s_pMe = 0;
LuaPlus::LuaObject* LuaExport< player >::s_pMetaTable = 0;

int _tmain(int argc, _TCHAR* argv[])


{
player* pPlayer = new player();
pPlayer->RegisterFunction( "PrintNumber", &player::LS_PrintNumber );
pPlayer->RegisterFunction( "SetTips", &player::LS_PrintNumber );
// Register your functions.

int nRet = GetLuaState()->DoFile( "main.lua" );
if ( nRet )

{
printf("错误信息: %s", GetLuaState()->StackTop().GetString());
}
getchar();
return 0;
}// main.lua
pp.PrintNumber(1000)

1.需要注意的是,类的成员函数中的参数 默认第一个为this
所以 要活得参数的时候 下标默认加1
if (args[2].IsNumber())
{
printf("%f\n", args[2].GetNumber());
}
posted on 2011-07-18 13:27
风轻云淡 阅读(1257)
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