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/*
core/application.cc
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#include "sys/sys.h"
#include "filesystem/filesystem.h"
#include "core/entity.h"
#include "core/application.h"
#include "core/core.h"
#include <iostream>
#include <errno.h>
#include <signal.h>
namespace core
{
// --------------- engine functions ------------------------------
void func_print(std::stringstream &args)
{
char text[MAXCMDSIZE];
if (args.getline(text, MAXCMDSIZE)) {
// remove the leading space
if (text[0] && text[1]) {
con_print << text+1 << std::endl;
}
}
}
void func_help(std::stringstream &args)
{
con_print << "This is the help function" << std::endl;
}
void func_quit(std::stringstream &args)
{
if (Application::instance()) {
Application::instance()->shutdown();
Application::instance()->quit(0);
}
}
void func_connect(std::stringstream &args)
{
if (Application::instance())
Application::instance()->connect();
}
void func_disconnect(std::stringstream &args)
{
if (Application::instance())
Application::instance()->disconnect();
}
void func_list_func(std::stringstream &args)
{
func::list();
}
void func_list_var(std::stringstream &args)
{
cvar::list();
}
void func_list_ent(std::stringstream &args)
{
entity::list();
}
// --------------- signal_handler -----------------------------------
extern "C" void signal_handler(int signum)
{
switch (signum) {
case SIGHUP:
case SIGINT:
case SIGQUIT:
case SIGTERM:
if (Application::instance()) {
con_warn << "received signal " << signum << ", shutting down..." << std::endl;
Application::instance()->shutdown();
Application::instance()->quit(0);
} else {
std::cerr << "received signal " << signum << ", terminated..." << std::endl;
sys::quit(1);
}
break;
default:
std::cerr << "received signal " << signum << ", terminated..." << std::endl;
sys::quit(1);
break;
}
}
// --------------- Application -----------------------------
Application *Application::application_instance = 0;
Application::Application()
{
if (application_instance) {
std::cerr << "multiple core::Application instances!" << std::endl;
sys::quit(2);
}
application_instance = this;
sys::signal(SIGHUP, signal_handler);
sys::signal(SIGINT, signal_handler);
sys::signal(SIGQUIT, signal_handler);
sys::signal(SIGTERM, signal_handler);
}
Application::~Application()
{
application_instance = 0;
}
Application *Application::instance()
{
return application_instance;
}
void Application::init()
{
con_print << "Initializing core..." << std::endl;
con_debug << "Debug messages enabled" << std::endl;
// initialize core subsystems
filesystem::init();
// register our functions
func::add("print", func_print);
func::add("help", func_help);
func::add("quit", func_quit);
func::add("connect", func_connect);
func::add("disconnect", func_disconnect);
func::add("list_var", func_list_var);
func::add("list_func", func_list_func);
func::add("list_ent", func_list_ent);
if (game())
game()->connected = false;
current_time = 0;
}
void Application::shutdown()
{
con_print << "Shutting down core..." << std::endl;
if (game() && game()->connected)
disconnect();
//if (game()) unload();
filesystem::shutdown();
}
void Application::quit(int status)
{
sys::quit(status);
}
void Application::connect()
{
if (!game()) {
con_warn << "No game module loaded!" << std::endl;
return;
}
if (game()->connected) {
con_warn << "Connected. Disconnect first." << std::endl;
}
entity::clear();
game()->current_time = 0;
if (game()->connected = game()->init()) {
con_print << "Connected." << std::endl;
} else {
con_warn << "Connect failed." << std::endl;
}
}
void Application::disconnect()
{
if (!game()) {
con_warn << "No game module loaded!" << std::endl;
return;
}
if (!game()->connected) {
con_warn << "Not connected." << std::endl;
return;
}
game()->shutdown();
game()->connected = false;
game()->current_time = 0;
entity::clear();
con_print << "Disconnected." << std::endl;
}
void Application::frame(float seconds)
{
current_time += seconds;
if (game() && game()->connected) {
game()->current_time += seconds;
game()->frame(seconds);
}
// execute commands in the buffer
commandbuffer::execute();
}
}
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