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/*
core/applicationinterface.cc
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#include "core/core.h"
#include "filesystem/filesystem.h"
#include "sys/sys.h"
#include <iostream>
#include <errno.h>
#include <signal.h>
namespace core {
// --------------- function repository ------------------------------
extern "C" void func_print(std::stringstream &args) {
char text[MAXCMDSIZE];
if(args.getline(text, MAXCMDSIZE))
con_print << args << std::endl;
}
extern "C" void func_help(std::stringstream &args) {
con_print << "This is the help function" << std::endl;
}
extern "C" void func_quit(std::stringstream &args) {
ApplicationInterface::instance()->shutdown();
ApplicationInterface::instance()->quit(0);
}
// --------------- signal_handler -----------------------------------
extern "C" void signal_handler(int signum)
{
switch(signum){
case SIGHUP:
case SIGINT:
case SIGQUIT:
case SIGTERM:
if (ApplicationInterface::instance()) {
con_warn << "received signal " << signum << ", shutting down..." << std::endl;
ApplicationInterface::instance()->shutdown();
ApplicationInterface::instance()->quit(0);
} else {
std::cerr << "received signal " << signum << ", no application found, terminated..." << std::endl;
sys::quit(1);
}
break;
default:
std::cerr << "received signal " << signum << ", terminated..." << std::endl;
sys::quit(1);
break;
}
}
// --------------- ApplicationInterface -----------------------------
ApplicationInterface *ApplicationInterface::applicationinterface_instance = 0;
ApplicationInterface::ApplicationInterface() {
if (applicationinterface_instance) {
std::cerr << "multiple singleton instances: core::ApplicationInterface" << std::endl;
sys::quit(2);
}
applicationinterface_instance = this;
sys::signal(SIGHUP, signal_handler);
sys::signal(SIGINT, signal_handler);
sys::signal(SIGQUIT, signal_handler);
sys::signal(SIGTERM, signal_handler);
}
ApplicationInterface::~ApplicationInterface()
{
applicationinterface_instance = 0;
}
ApplicationInterface *ApplicationInterface::instance()
{
return applicationinterface_instance;
}
void ApplicationInterface::init()
{
filesystem::init();
con_print << "Initializing core..." << std::endl;
con_debug << "Debug messages enabled" << std::endl;
// register our functions
func_register("print", func_print);
func_register("help", func_help);
func_register("quit", func_quit);
if (game())
game()->init();
else
con_warn << "No game module loaded!" << std::endl;
}
void ApplicationInterface::shutdown()
{
con_print << "Shutting down core..." << std::endl;
if (game())
game()->shutdown();
else
con_warn << "No game module loaded!" << std::endl;
filesystem::shutdown();
}
void ApplicationInterface::quit(int status)
{
sys::quit(status);
}
void ApplicationInterface::frame(float seconds)
{
if (game()) {
game()->frame(seconds);
}
// execute commands in the buffer
commandbuffer::execute();
}
}
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