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ScriptExecutor.cpp
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ScriptExecutor.cpp
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/*
* Copyright (C) 2012 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Me and My Shadow is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ScriptExecutor.h"
#include <iostream>
using namespace std;
ScriptExecutor::ScriptExecutor():state(NULL){
//NOTE: If a state is going to use the scriptExecutor it is his task to reset it.
}
ScriptExecutor::~ScriptExecutor(){
lua_close(state);
}
void ScriptExecutor::reset(){
//Close the lua_state, if any.
if(state)
lua_close(state);
//Create a new state.
state=luaL_newstate();
//Now load the lua libraries.
//FIXME: Only allow safe libraries/functions.
luaopen_base(state);
luaL_requiref(state,"table",luaopen_table,1);
luaL_requiref(state,"bit32",luaopen_bit32,1);
luaL_requiref(state,"string",luaopen_string,1);
luaL_requiref(state,"math",luaopen_math,1);
//Load our own libraries.
luaL_requiref(state,"block",luaopen_block,1);
luaL_requiref(state,"playershadow",luaopen_player,1);
}
void ScriptExecutor::registerFunction(std::string name,lua_CFunction function){
lua_register(state,name.c_str(),function);
}
void ScriptExecutor::executeScript(std::string script){
//First make sure the stack is empty.
lua_settop(state,0);
//Now execute the script.
luaL_dostring(state,script.c_str());
//Check if there's an error.
if(lua_gettop(state)!=0){
cerr<<"LUA ERROR: "<<lua_tostring(state,1)<<endl;
}
}

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