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fov.h

/****************************************************************************
**
** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
** Copyright (C) 2002-2008 Bjoern Bergstroem
**
** This file is part of the Qt Designer of the Qt Toolkit.
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** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
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#ifndef FOV_H
#define FOV_H

class OublietteLevel;

class FOV
{
protected:
      virtual ~FOV() {}

      virtual bool scanCell(OublietteLevel *map, int x, int y) = 0;
      virtual void applyCell(OublietteLevel *map, int x, int y) = 0;

      double slope(double x1, double y1, double x2, double y2);
      double invSlope(double x1, double y1, double x2, double y2);

      void scanNW2N(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
      void scanNE2N(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
      void scanNW2W(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
      void scanSW2W(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
      void scanNE2E(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
      void scanSE2E(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);

      void scanSW2S(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
      void scanSE2S(OublietteLevel *map, int xCenter, int yCenter, int distance, int maxRadius, double startSlope, double endSlope);
public:
      void start(OublietteLevel *map, unsigned int x, unsigned int y, int maxRadius);
};


class SIMPLEFOV : public FOV
{
private:
      bool scanCell(OublietteLevel *map, int x, int y);
      void applyCell(OublietteLevel *map, int x, int y);
};
#endif

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