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// Cyphesis Online RPG Server and AI Engine
// Copyright (C) 2005 Alistair Riddoch
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
// $Id: ScriptFactory.cpp,v 1.11 2007-12-04 00:04:00 alriddoch Exp $
#include "ScriptFactory.h"
#include "rulesets/Py_Thing.h"
#include "rulesets/Python_Script_Utils.h"
#include "rulesets/PythonThingScript.h"
#include "rulesets/Entity.h"
#include "common/log.h"
#include "common/compose.hpp"
/// \brief ScriptFactory constructor
///
/// @param package name of the script package scripts are to be created from
/// @param type name of the type instanced to create scripts
ScriptFactory::ScriptFactory(const std::string & package,
const std::string & type) : m_package(package),
m_type(type)
{
}
ScriptFactory::~ScriptFactory()
{
}
/// \brief Retrieve the pythonclass object from the module which has
/// already been loaded.
int PythonScriptFactory::getClass()
{
std::string classname(m_type);
classname[0] = toupper(classname[0]);
m_class = PyObject_GetAttrString(m_module, (char *)classname.c_str());
if (m_class == NULL) {
log(ERROR, String::compose("Could not find python class %1.%2",
m_package, classname));
PyErr_Print();
return -1;
}
if (PyCallable_Check(m_class) == 0) {
log(ERROR, String::compose("Could not instance python class %1.%2",
m_package, classname));
Py_DECREF(m_class);
m_class = 0;
return -1;
}
return 0;
}
/// \brief PythonScriptFactory constructor
///
/// @param package Name of the script package where the script type is
/// @param type Name of the scrpt types instanced by this factory
PythonScriptFactory::PythonScriptFactory(const std::string & package,
const std::string & type) :
ScriptFactory(package, type),
m_module(0), m_class(0)
{
// FIXME #4 This sort of code should not be in the constructor
PyObject * package_name = PyString_FromString((char *)m_package.c_str());
m_module = PyImport_Import(package_name);
Py_DECREF(package_name);
if (m_module == NULL) {
log(ERROR, String::compose("Missing python module \"%1\"", m_package));
PyErr_Print();
return;
}
getClass();
}
PythonScriptFactory::~PythonScriptFactory()
{
if (m_class != 0) {
Py_DECREF(m_class);
}
if (m_module != 0) {
Py_DECREF(m_module);
}
}
int PythonScriptFactory::addScript(Entity * entity)
{
if (m_class == 0) {
return -1;
}
PyEntity * wrapper = newPyEntity();
wrapper->m_entity = entity;
PyObject * script = Create_PyScript((PyObject *)wrapper, m_class);
if (script == NULL) {
return -1;
}
entity->setScript(new PythonEntityScript(script, (PyObject *)wrapper));
return 0;
}
int PythonScriptFactory::refreshClass()
{
if (m_module == 0) {
return -1;
}
PyObject * new_module = PyImport_ReloadModule(m_module);
if (new_module == 0) {
log(ERROR, String::compose("Error reloading python module \"%1\"",
m_package));
PyErr_Clear();
return -1;
}
Py_DECREF(m_module);
m_module = new_module;
return getClass();
}
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