source/libr2c2/vehicle.h

   1 #ifndef LIBR2C2_VEHICLE_H_
   2 #define LIBR2C2_VEHICLE_H_
   3
   4 #include "geometry.h"
   5 #include "object.h"
   6 #include "trackoffsetiter.h"
   7 #include "vehicleplacement.h"
   8 #include "vehicletype.h"
   9
  10 namespace R2C2 {
  11
  12 class Layout;
  13 class Train;
  14
  15 class attachment_error: public std::logic_error
  16 {
  17 public:
  18         attachment_error(const std::string &w): std::logic_error(w) { }
  19         virtual ~attachment_error() throw() { }
  20 };
  21
  22
  23 class Vehicle: public Object
  24 {
  25 public:
  26         struct Axle
  27         {
  28                 const VehicleType::Axle *type;
  29                 Angle angle;
  30
  31                 Axle(const VehicleType::Axle &);
  32         };
  33
  34         struct Bogie
  35         {
  36                 const VehicleType::Bogie *type;
  37                 Angle direction;
  38                 std::vector<Axle *> axles;
  39
  40                 Bogie(const VehicleType::Bogie &);
  41         };
  42
  43         struct Rod
  44         {
  45                 const VehicleType::Rod *type;
  46                 Vector position;
  47                 Angle angle;
  48
  49                 Rod(const VehicleType::Rod &);
  50         };
  51
  52 private:
  53         const VehicleType &type;
  54         Train *train;
  55         Vehicle *next;
  56         Vehicle *prev;
  57         VehiclePlacement placement;
  58         std::vector<Axle> axles;
  59         std::vector<Axle *> fixed_axles;
  60         std::vector<Bogie> bogies;
  61         std::vector<Rod> rods;
  62         unsigned front_sensor;
  63         unsigned back_sensor;
  64
  65 public:
  66         Vehicle(Layout &, const VehicleType &);
  67         ~Vehicle();
  68
  69         virtual Vehicle *clone(Layout * = 0) const;
  70         virtual const VehicleType &get_type() const { return type; }
  71
  72         void set_train(Train *);
  73         Train *get_train() const { return train; }
  74         void attach_back(Vehicle &);
  75         void attach_front(Vehicle &);
  76         void detach_back();
  77         void detach_front();
  78         Vehicle *get_next() const { return next; }
  79         Vehicle *get_previous() const { return prev; }
  80
  81         // TODO implement these - should call place() with suitable parameters
  82         virtual void set_position(const Vector &) { }
  83         virtual void set_rotation(const Angle &) { }
  84         virtual void set_tilt(const Angle &) { }
  85         void place(const TrackOffsetIter &, VehiclePlacement::Anchor = VehiclePlacement::CENTER);
  86         void unplace();
  87         void advance(float);
  88         const VehiclePlacement &get_placement() const { return placement; }
  89         bool is_placed() const { return placement.is_placed(); }
  90         const Axle &get_axle(unsigned) const;
  91         const Axle &get_fixed_axle(unsigned) const;
  92         const Bogie &get_bogie(unsigned) const;
  93         const Axle &get_bogie_axle(unsigned, unsigned) const;
  94         const Rod &get_rod(unsigned) const;
  95 private:
  96         void update_position(int);
  97         void update_position_from(const Vehicle &);
  98         void propagate_position();
  99         void propagate_forward();
 100         void propagate_backward();
 101         void check_sensor(const TrackOffsetIter &, unsigned &, bool);
 102         void turn_axles(float);
 103         void update_rods();
 104         float resolve_rod_constraint(Rod &, const VehicleType::RodConstraint &);
 105
 106 public:
 107         virtual unsigned get_n_link_slots() const;
 108         virtual Vehicle *get_link(unsigned) const;
 109         virtual int get_link_slot(const Object &) const;
 110
 111         virtual bool collide_ray(const Ray &, float * = 0) const;
 112 };
 113
 114 } // namespace R2C2
 115
 116 #endif