// * This file is part of the COLOBOT source code
// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * This program 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 3 of the License, or
// * (at your option) any later version.
// *
// * This program 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, see  http://www.gnu.org/licenses/.

// cloud.h

#pragma once

#include "common/event.h"
#include "graphics/common/color.h"
#include "math/point.h"
#include "math/vector.h"



class CInstanceManager;


namespace Gfx {

class CEngine;
class CTerrain;

const short MAXCLOUDLINE = 100;

struct CloudLine
{
	short		x, y;		// beginning
	short		len;		// in length x
	float		px1, px2, pz;
};


class CCloud
{
public:
	CCloud(CInstanceManager* iMan, CEngine* engine);
	~CCloud();

	bool		EventProcess(const Event &event);
	void		Flush();
	bool		Create(const char *filename, Gfx::Color diffuse, Gfx::Color ambient, float level);
	void		Draw();

	bool		SetLevel(float level);
	float		RetLevel();

	void		SetEnable(bool bEnable);
	bool		RetEnable();

protected:
	bool		EventFrame(const Event &event);
	void		AdjustLevel(Math::Vector &pos, Math::Vector &eye, float deep, Math::Point &uv1, Math::Point &uv2);
	bool		CreateLine(int x, int y, int len);

protected:
	CInstanceManager*	m_iMan;
	CEngine*		m_engine;
	CTerrain*		m_terrain;

	char			m_filename[100];
	float			m_level;		// overall level
	Math::Point			m_speed;		// feedrate (wind)
	Gfx::Color		m_diffuse;		// diffuse color
	Gfx::Color		m_ambient;		// ambient color
	float			m_time;
	float			m_lastTest;
	int				m_subdiv;

	Math::Vector		m_wind;			// wind speed
	int			m_brick;		// brick mosaic
	float			m_size;			// size of a brick element

	int			m_lineUsed;
	CloudLine		m_line[MAXCLOUDLINE];

	bool			m_bEnable;
};


}; // namespace Gfx