/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#ifndef _MOOF_APPLICATION_HH_
#define _MOOF_APPLICATION_HH_

/**
 * \file application.hh
 * The main loop.
 */

#include <boost/noncopyable.hpp>

#include <moof/event.hh>
#include <moof/math.hh>
#include <moof/runloop.hh>
#include <moof/timer.hh>


namespace moof {


class settings;

class application : public runloop
{
public:

	application(settings& settings);
	virtual ~application() {}

	virtual void update(scalar t, scalar dt) = 0;
	virtual void draw(scalar alpha) const = 0;
	virtual void handle_event(const event& event) = 0;


private:

	void dispatch_update(timer& timer, scalar t);
	void dispatch_draw(timer& timer, scalar t);

	scalar	next_update_;
	scalar	last_update_;
	scalar	total_time_;
	scalar	accum_;

	timer	update_timer_;
	timer	draw_timer_;


	scalar	timestep_;
	scalar	inverse_timestep_;
};


} // namespace moof

#endif // _MOOF_APPLICATION_HH_