crawl-ref/source/ray.h

   1 /*
   2  *  File:       ray.h
   3  *  Summary:    Ray definition
   4  */
   5
   6 #ifndef RAY_H
   7 #define RAY_H
   8
   9 #include "fixedarray.h"
  10 #include "geom2d.h"
  11
  12 typedef SquareArray<bool,1> reflect_grid;
  13
  14 struct ray_def
  15 {
  16     geom::ray r;
  17     bool on_corner;
  18     int cycle_idx;
  19
  20     ray_def() : on_corner(false), cycle_idx(-1) {}
  21     ray_def(const geom::ray& _r)
  22         : r(_r), on_corner(false), cycle_idx(-1) {}
  23
  24     coord_def pos() const;
  25     bool advance();
  26     void bounce(const reflect_grid &rg);
  27     void regress();
  28
  29     // Get and set the direction.
  30     double get_degrees() const;
  31     void set_degrees(double d);
  32
  33     bool _valid() const;
  34 };
  35
  36 #endif