vehicle.h

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2010  Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #ifndef LIBR2C2_VEHICLE_H_
   9 #define LIBR2C2_VEHICLE_H_
  10
  11 #include "geometry.h"
  12
  13 namespace R2C2 {
  14
  15 class Layout;
  16 class Track;
  17 class VehicleType;
  18
  19 class Vehicle
  20 {
  21 public:
  22         enum PlaceMode
  23         {
  24                 CENTER,
  25                 FRONT_AXLE,
  26                 FRONT_BUFFER,
  27                 BACK_AXLE,
  28                 BACK_BUFFER
  29         };
  30
  31 private:
  32         struct TrackPosition
  33         {
  34                 Track *track;
  35                 unsigned ep;
  36                 float offs;
  37
  38                 TrackPosition();
  39                 TrackPosition(Track *, unsigned, float);
  40                 void advance(float);
  41                 TrackPoint get_point() const;
  42         };
  43
  44         Layout &layout;
  45         const VehicleType &type;
  46         Vehicle *next;
  47         Vehicle *prev;
  48         TrackPosition track_pos;
  49         Point position;
  50         float direction;
  51         std::vector<float> bogie_dirs;
  52         unsigned front_sensor;
  53         unsigned back_sensor;
  54
  55 public:
  56         Vehicle(Layout &, const VehicleType &);
  57         ~Vehicle();
  58
  59         const VehicleType &get_type() const { return type; }
  60
  61         void attach_back(Vehicle &);
  62         void attach_front(Vehicle &);
  63         void detach_back();
  64         void detach_front();
  65         Vehicle *get_next() const { return next; }
  66         Vehicle *get_previous() const { return prev; }
  67
  68         void place(Track &, unsigned, float, PlaceMode = CENTER);
  69         void unplace();
  70         void advance(float);
  71         Track *get_track() const { return track_pos.track; }
  72         unsigned get_entry() const { return track_pos.ep; }
  73         float get_offset() const { return track_pos.offs; }
  74         const Point &get_position() const { return position; }
  75         float get_direction() const { return direction; }
  76         float get_bogie_direction(unsigned) const;
  77 private:
  78         void update_position();
  79         void update_position_from(const Vehicle &);
  80         void propagate_position();
  81         void propagate_forward();
  82         void propagate_backward();
  83         void check_sensor(float, unsigned &);
  84
  85         void adjust_for_distance(TrackPosition &, TrackPosition &, float, float = 0.5) const;
  86         TrackPoint get_point(const Point &, const Point &, float = 0.5) const;
  87         TrackPoint get_point(const TrackPosition &, float, float = 0.5) const;
  88 };
  89
  90 } // namespace R2C2
  91
  92 #endif