/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#ifndef TITANIC_STAR_CROSSHAIRS_H
#define TITANIC_STAR_CROSSHAIRS_H

#include "common/array.h"
#include "common/rect.h"
#include "titanic/star_control/base_stars.h"
#include "titanic/star_control/surface_area.h"
#include "titanic/star_control/fpoint.h"
#include "titanic/support/simple_file.h"
#include "titanic/support/video_surface.h"

namespace Titanic {

class CStarField;
class CStarMarkers;
class CStarCamera;

class CStarCrosshairs {
private:
	Common::Array<CStarPosition> _positions;
	CStarPosition _entries[3];
private:
	/**
	 * Allocates space in the _rects array
	 */
	void allocate(int count);

	/**
	 * Clears any current data
	 */
	void clear();
public:
	int _matchIndex;
	int _entryIndex;
public:
	CStarCrosshairs();
	~CStarCrosshairs() { clear(); }

	/**
	 * Load the data for the class from file
	 */
	void load(SimpleFile *file) {}

	/**
	 * Save the data for the class to file
	 */
	void save(SimpleFile *file, int indent) {}

	/**
	 * Returns true if there are no crosshairs present
	 */
	bool isEmpty() const { return _entryIndex == -1; }

	void selectStar(int starNum, CVideoSurface *surface, CStarField *starField,
		CStarMarkers *markers);

	void draw(CSurfaceArea *surfaceArea);

	bool fn1(CStarField *starField, CSurfaceArea *surfaceArea, CStarCamera *camera);
	void fn2(CVideoSurface *surface, CStarField *starField, CStarMarkers *markers);
	
	/**
	 * Increments the index for the number of matches
	 */
	void incMatches();
	
	/**
	 * Draw the crosshairs for a given star
	 */
	void drawStar(int index, CSurfaceArea *surfaceArea);

	/**
	 * Draws the crosshairs for a specified entry, and adds the star
	 * to the starfield markers
	 */
	void drawEntry(int index, CVideoSurface *surface, CStarField *starField, CStarMarkers *markers);

	/**
	 * Erase crosshairs for the most recently selected star
	 */
	void eraseCurrent(CSurfaceArea *surfaceArea);
	
	/**
	 * Draw crosshairs at the given position
	 */
	void drawAt(const FPoint &pt, CSurfaceArea *surfaceArea);
	
	/**
	 * Returns the position of the most recently selected star
	 */
	FPoint getPosition() const;

	/**
	 * Returns the index of an entry in the rects list a given point falls within
	 */
	int indexOf(const Common::Point &pt) const;

	/**
	 * Returns true if the starfield is solved
	 */
	bool isSolved() const { return _matchIndex == 2; }
};

} // End of namespace Titanic

#endif /* TITANIC_STAR_CROSSHAIRS_H */