/*
   client/client.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 "game/game.h"
#include "core/core.h"
#include "common/common.h"

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

// C++ headers
#include <cmath>

namespace client {

// public instances
Camera 	camera;
View 	view;
Video 	video;
Input 	input;

// private instance of the client console object
Console console_instance;
// private instance of the game object
game::Game game_instance;

void quit(int status)
{
	SDL_Quit();
	exit(status);
}

void init()
{
	// core initializes all the modules
	core::init();	
	
	con_debug << "Initializing client..." << std::endl;

	// Initialize the video subsystem
	video.init();
	if (!video.initialized) {
		quit(1);
	}

	// initialize input
	input.init();
}

void run()
{
	Uint32 chrono = SDL_GetTicks();

	while(true) {
		Uint32 current = SDL_GetTicks();
	
		// overflow protection ~49 days
		if (current < chrono) {
			chrono = current;
		}
		
		// update the game chronometers
		float elapsed = (float) ( current - chrono) / 1000.0f;
		chrono = current;

		core::frame(elapsed);

		// update the video chronometers and draw
		video.draw(elapsed);
		
		// process input
		input.process();
	}
}

void shutdown() 
{
	con_debug << "Shutting down client..." << std::endl;

	input.shutdown();

	video.shutdown();

	core::shutdown();	

	quit(0);
}

} // namespace client