/*]  Copyright (c) 2009-2011, Charles McGarvey  [*****************************
**]  All rights reserved.
*
* 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_

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


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

namespace moof {


// forward declarations
class settings;

class application : public runloop
{
public:

	explicit 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		last_update_;
	scalar		last_draw_;
	scalar		accum_;
	game_time	game_time_;

	timer		update_timer_;
	timer		draw_timer_;

	scalar		timestep_;
	scalar		inverse_timestep_;
};


} // namespace moof

#endif // _MOOF_APPLICATION_HH_