source/libr2c2/block.h

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2006-2010  Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #ifndef LIBR2C2_BLOCK_H_
   9 #define LIBR2C2_BLOCK_H_
  10
  11 #include <list>
  12 #include <set>
  13 #include "track.h"
  14
  15 namespace R2C2 {
  16
  17 class Layout;
  18 class Route;
  19 class TrackIter;
  20 class Train;
  21
  22 class Block: public sigc::trackable
  23 {
  24 public:
  25         enum State
  26         {
  27                 INACTIVE,
  28                 MAYBE_INACTIVE,
  29                 MAYBE_ACTIVE,
  30                 ACTIVE
  31         };
  32
  33         struct Endpoint
  34         {
  35                 Track *track;
  36                 unsigned track_ep;
  37                 Block *link;
  38                 unsigned paths;
  39
  40                 Endpoint(Track *, unsigned);
  41         };
  42
  43         sigc::signal<void, Train *> signal_reserved;
  44         sigc::signal<void, State> signal_state_changed;
  45
  46 private:
  47         Layout &layout;
  48         unsigned id;
  49         unsigned sensor_id;
  50         unsigned turnout_id;
  51         State state;
  52         Msp::Time::TimeDelta state_confirm_timeout;
  53         std::set<Track *> tracks;
  54         std::vector<Endpoint> endpoints;
  55         Train *train;
  56
  57 public:
  58         Block(Layout &, Track &);
  59         ~Block();
  60
  61         unsigned get_id() const { return id; }
  62         unsigned get_sensor_id() const { return sensor_id; }
  63         unsigned get_turnout_id() const { return turnout_id; }
  64         State get_state() const { return state; }
  65         const std::set<Track *> &get_tracks() const { return tracks; }
  66         bool has_track(Track &) const;
  67         const std::vector<Endpoint> &get_endpoints() const { return endpoints; }
  68         const Endpoint &get_endpoint(unsigned) const;
  69         int get_endpoint_by_link(Block &) const;
  70         float get_path_length(unsigned, const Route * = 0) const;
  71         void check_link(Block &);
  72         void break_link(Block &);
  73         Block *get_link(unsigned) const;
  74         bool reserve(Train *);
  75         Train *get_train() const { return train; }
  76         void tick(const Msp::Time::TimeDelta &);
  77 private:
  78         void find_paths(TrackIter, unsigned);
  79         void determine_id();
  80         void sensor_event(unsigned, bool);
  81 };
  82
  83 } // namespace R2C2
  84
  85 #endif