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Separate train routing logic to a class derived from TrainAI
[r2c2.git] / source / libr2c2 / trainrouter.h
1 #ifndef LIBR2C2_TRAINROUTER_H_
2 #define LIBR2C2_TRAINROUTER_H_
3
4 #include <list>
5 #include <msp/datafile/objectloader.h>
6 #include "trainai.h"
7
8 namespace R2C2 {
9
10 class Block;
11 class Route;
12 class Track;
13 class Zone;
14
15 class TrainRouter: public TrainAI
16 {
17 public:
18         class Loader: public Msp::DataFile::ObjectLoader<TrainRouter>
19         {
20         public:
21                 Loader(TrainRouter &);
22         private:
23                 void route(const std::string &);
24                 void tag(const std::string &);
25         };
26
27         sigc::signal<void, const Route *> signal_route_changed;
28         sigc::signal<void> signal_arrived;
29
30 private:
31         typedef std::list<const Route *> RouteList;
32
33         int priority;
34         RouteList routes;
35         bool arriving;
36         const Train *yielding_to;
37
38 public:
39         TrainRouter(Train &);
40
41         void set_priority(int);
42         int get_priority() const { return priority; }
43         void yield_to(const Train &);
44
45         bool set_route(const Route *);
46         bool go_to(Track &);
47         bool go_to(const Zone &);
48         const Route *get_route() const;
49
50         virtual void message(const Message &);
51         virtual void tick(const Msp::Time::TimeStamp &, const Msp::Time::TimeDelta &);
52
53         void save(std::list<Msp::DataFile::Statement> &) const;
54
55 private:
56         void block_reserved(Block &, Train *);
57         void train_advanced(Block &);
58         const Route *get_route_for_block(const Block &) const;
59
60         Route *create_lead_route(Route *, const Route *);
61         bool advance_route(RouteList::iterator &, const Block &);
62         bool is_on_route(const Block &);
63 };
64
65 } // namespace R2C2
66
67 #endif