/*
   client/application.cc
   This file is part of the Osirion project and is distributed under
   the terms and conditions of the GNU General Public License version 2
*/

// project headers
#include "client/client.h"
#include "client/application.h"
#include "core/core.h"

// SDL headers
#include <SDL/SDL.h>

// C++ headers
#include <cmath>

namespace client
{

extern "C" void func_con_toggle(std::stringstream &args)
{
	console.toggle();
}

void Application::quit(int status)
{
	SDL_Quit();
	core::ApplicationInterface::quit(status);
}

void Application::init()
{
	con_print << "Initializing client..." << std::endl;
	// initialize core
	core::ApplicationInterface::init();

	// Initialize the video subsystem
	if (!client::video::init())
		quit(1);

	// initialize input
	input::init();

	// register our engine functions
	core::func::add("con_toggle", func_con_toggle);
}

void Application::run()
{
	con_print << "Running client..." << std::endl;

	Uint32 chrono = SDL_GetTicks();

	while (true) {
		Uint32 current = SDL_GetTicks();

		// overflow protection ~49 days
		if (current < chrono) {
			chrono = current;
		}

		// run a core frame
		float seconds = ((float)(current - chrono)) / 1000.0f;
		frame(seconds);

		// run a video frame
		video::frame(seconds);
		if (seconds > 0)
			current_fps = floorf(1/seconds);
		else
			current_fps = 9999;

		// process input
		input::frame(seconds);

		// update the main loop chronometer
		chrono = current;
	}

}

void Application::shutdown()
{
	con_print << "Shutting down client..." << std::endl;
	console.flush();

	input::shutdown();
	console.flush();

	video::shutdown();
	console.flush();

	core::ApplicationInterface::shutdown();
	console.flush();

	quit(0);
}

} // namespace client