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

#ifndef __INCLUDED_CLIENT_VIEW_H__
#define __INCLUDED_CLIENT_VIEW_H__

#include "core/zone.h"
#include "ui/widget.h"

namespace client
{

const size_t 			fps_counter_size = 32; // fps is the average of 32 frames
const size_t			net_counter_size = 128; // net is the average of 128 frames

//// a widget to show developer info
class DevInfo : public ui::Widget
{
public:
	// default constructor
	DevInfo(ui::Widget *parent = 0);

protected:
	// draw developer info
	void draw();
};

// a widget that shows engine statistics
class Stats : public ui::Widget
{
public:
	// default constructor
	Stats(ui::Widget *parent=0);

protected:
	// draw engine statistics
	virtual void draw();

private:
	float 				fps_counter_time[fps_counter_size];
	size_t 				fps_counter_index;

	float				net_counter_time[net_counter_size];
	size_t				net_counter_traffic[net_counter_size];
	size_t				net_counter_index;
};

/// a widget to show keypress events
class KeyPress : public ui::Widget
{
public:
	// default constructor
	KeyPress(ui::Widget *parent=0);

protected:
	// draw keypress events
	virtual void draw();
};

/// the client view widget
/**
* the client view renders the world and contains the main user interface widgets
*/
class View : public ui::Widget
{
public:
	View(ui::Widget *parent=0);

protected:
	virtual void draw();
	virtual void resize();

private:
	DevInfo		*view_devinfo;
	Stats		*view_stats;
	KeyPress	*view_keypress;
};

/// functions to draw the client view
namespace view  
{
	/// intialize the view
	void init();
	
	/// shutdown the view
	void shutdown();

	/// draw the next frame
	void frame(float seconds);

	/// reset OpenGL state
	void reset();

	/// clear client-side assets of a zone
	void clear_zone(core::Zone *zone);

} // namespace view

} // namespace client

#endif // __INCLUDED_CLIENT_VIEW_H__