////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2011, 2026
//
//    This file is part of Scorched3D.
//
//    Scorched3D is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    Scorched3D is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License along
//    with this program; if not, write to the Free Software Foundation, Inc.,
//    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
////////////////////////////////////////////////////////////////////////////////

#ifndef __INCLUDE_GLLenseFlare_hpp_INCLUDE__
#define __INCLUDE_GLLenseFlare_hpp_INCLUDE__

// GLLenseFlare.hpp: interface for the GLLenseFlare class.
//
//////////////////////////////////////////////////////////////////////

#include <common/Vector.hpp>
#include <common/ProgressCounter.hpp>
#include <GLEXT/GLTexture.hpp>

// SINGLETON
class GLLenseFlare
{
public:
	static GLLenseFlare* instance();

	void init( ProgressCounter* counter = nullptr );

	void draw( Vector& flarePos, bool fullFlare, int color = 0, float size = 1.0f, float alpha = 1.0f );
	void draw( Vector& flarePos, Vector& flareDirection, int color = 0 );

protected:
	static GLLenseFlare* instance_;

	struct Flare
	{
		int    type;
		float  scale;
		float  loc; /* position on axis */
		Vector color1;
		Vector color2;
		Vector color3;
		Vector color4;
	} flare_[12];

	static bool flaresEnabled_;
	GLTexture   flares_[6];
	GLTexture   shines_[10];
	int         shineTic_;

	void setFlare(
		int     index,
		int     type,
		float   scale,
		float   loc,
		Vector& color1,
		Vector& color2,
		Vector& color3,
		Vector& color4,
		float   colorScale
	);

private:
	GLLenseFlare();
	virtual ~GLLenseFlare();
};

#endif  // __INCLUDE_GLLenseFlare_hpp_INCLUDE__
