5 #include "trackchain.h"
6 #include "trainroutemetric.h"
7 #include "trainrouteplanner.h"
8 #include "trainrouter.h"
15 TrainRouter::TrainRouter(Train &t):
20 destination_changed(false),
23 sequence_check_pending(false)
25 train.get_layout().signal_block_reserved.connect(sigc::mem_fun(this, &TrainRouter::block_reserved));
26 train.signal_advanced.connect(sigc::mem_fun(this, &TrainRouter::train_advanced));
27 train.signal_rear_advanced.connect(sigc::mem_fun(this, &TrainRouter::train_rear_advanced));
30 TrainRouter::~TrainRouter()
32 for(vector<TrainRouteMetric *>::iterator i=metrics.begin(); i!=metrics.end(); ++i)
36 void TrainRouter::set_priority(int p)
41 bool TrainRouter::set_route(const Route *r)
43 BlockIter fncb = train.get_first_noncritical_block();
46 if(r && train.is_placed())
48 const BlockAllocator &allocator = train.get_block_allocator();
49 TrackIter first = allocator.first().track_iter();
50 TrackIter next = fncb.track_iter();
51 if(!r->has_track(*next))
53 lead = Route::find(next, *r);
56 create_lead_route(lead, lead);
58 else if(!r->has_track(*first))
59 lead = create_lead_route(0, r);
64 routes.push_back(lead);
70 sequence_points.clear();
72 sequence_check_pending = false;
79 const Route *TrainRouter::get_route() const
83 return routes.front();
86 void TrainRouter::route_changed()
88 BlockIter fncb = train.get_first_noncritical_block();
90 reserving_route = routes.begin();
91 bool already_at_end = false;
94 TrackIter track = train.get_block_allocator().first().track_iter();
95 for(; track; track=track.next())
97 if(!advance_to_track(reserving_route, *track))
99 already_at_end = true;
102 if(&track->get_block()==fncb.block())
109 arrival = ON_THE_WAY;
111 train.refresh_blocks_from(*fncb);
114 const Route *route = get_route();
115 signal_route_changed.emit(route);
116 signal_event.emit(Message("route-changed", route));
119 void TrainRouter::set_destination(const TrackChain &d)
122 destination_changed = true;
123 metrics_stale = true;
126 bool TrainRouter::is_destination(Track &track) const
129 return destination->has_track(track);
134 void TrainRouter::add_waypoint(const TrackChain &wp)
136 waypoints.push_back(&wp);
137 destination_changed = true;
138 metrics_stale = true;
141 bool TrainRouter::is_waypoint(unsigned index, Track &track) const
143 if(index>=waypoints.size())
144 throw out_of_range("TrainRouter::is_waypoint");
146 return waypoints[index]->has_track(track);
149 const TrainRouteMetric &TrainRouter::get_metric(int index) const
152 throw logic_error("no metrics");
153 else if(metrics_stale)
154 throw logic_error("metrics are stale");
157 return *metrics.front();
158 else if(static_cast<unsigned>(index)>=waypoints.size())
159 throw out_of_range("TrainRouter::get_metric");
161 return *metrics[index+1];
164 void TrainRouter::set_departure_delay(const Time::TimeDelta &d)
167 destination_changed = true;
170 void TrainRouter::message(const Message &msg)
172 if(msg.type=="set-route")
174 if(msg.value.check_type<Route *>())
175 set_route(msg.value.value<Route *>());
177 set_route(msg.value.value<const Route *>());
179 else if(msg.type=="clear-route")
181 else if(msg.type=="set-destination")
183 if(msg.value.check_type<TrackChain *>())
184 set_destination(*msg.value.value<TrackChain *>());
186 set_destination(*msg.value.value<const TrackChain *>());
188 else if(msg.type=="add-waypoint")
190 if(msg.value.check_type<TrackChain *>())
191 add_waypoint(*msg.value.value<TrackChain *>());
193 add_waypoint(*msg.value.value<const TrackChain *>());
195 else if(msg.type=="set-departure-delay")
196 set_departure_delay(msg.value.value<Time::TimeDelta>());
199 void TrainRouter::tick(const Time::TimeDelta &dt)
204 if(delay<=Time::zero)
208 if(destination_changed)
211 start_planning(train.get_layout());
212 else if(planner->get_result()!=TrainRoutePlanner::PENDING)
214 destination_changed = false;
215 if(planner->get_result()==TrainRoutePlanner::COMPLETE)
217 const list<Route *> &planned_routes = planner->get_routes_for(train);
219 routes.push_back(create_lead_route(0, planned_routes.front()));
220 routes.insert(routes.end(), planned_routes.begin(), planned_routes.end());
221 sequence_points = planner->get_sequence_for(train);
222 current_sequence = 0;
223 sequence_check_pending = false;
231 if(sequence_check_pending)
233 if(sequence_points.front().is_cleared())
235 sequence_check_pending = false;
238 if(arrival==RESERVED_TO_END && !train.get_speed())
240 signal_arrived.emit(destination);
241 signal_event.emit(Message("arrived", destination));
244 else if(arrival==ARRIVED && !train.get_block_allocator().is_active())
248 void TrainRouter::save(list<DataFile::Statement> &st) const
250 st.push_back((DataFile::Statement("priority"), priority));
254 RouteList::const_iterator i = routes.begin();
255 for(; (i!=routes.end() && (*i)->is_temporary()); ++i) ;
257 st.push_back((DataFile::Statement("route"), (*i)->get_name()));
261 void TrainRouter::block_reserved(Block &block, Train *t)
271 SequencePoint &sp = sequence_points.front();
272 if(sp.preceding_train==t && sp.block==&block)
277 sequence_check_pending = true;
283 if(!sequence_points.empty())
285 SequencePoint &sp = sequence_points.front();
288 current_sequence = sp.sequence_out;
289 sequence_points.pop_front();
293 TrackIter track = train.get_block_allocator().iter_for(block).track_iter();
295 // Is the block a turnout? If so, set it to the proper path.
296 if(unsigned taddr = block.get_turnout_address())
298 int path = (*reserving_route)->get_turnout(taddr);
300 track->set_active_path(path);
303 if(reserving_route==routes.end() || !(*reserving_route)->has_track(*track))
305 reserving_route = routes.begin();
306 arrival = ON_THE_WAY;
307 track = t->get_block_allocator().first().track_iter();
308 for(; track; track=track.next())
310 if(!advance_to_track(reserving_route, *track))
311 throw logic_error("internal error (reservation outside of route)");
312 else if(&track->get_block()==&block)
317 // Do we need to move to the next route?
318 for(; track; track=track.next((*reserving_route)->get_path(*track)))
320 if(!advance_to_track(reserving_route, *track))
322 arrival = RESERVED_TO_END;
323 train.stop_at(&block);
326 if(&track->get_block()!=&block)
330 if(!sequence_points.empty())
332 SequencePoint &sp = sequence_points.front();
333 if(sp.block==&track->get_block() && !sp.is_cleared())
334 train.stop_at(&block);
338 void TrainRouter::train_advanced(Block &block)
340 BlockIter b_iter = train.get_block_allocator().iter_for(block);
342 if(!waypoints.empty())
344 const TrackChain &wp = *waypoints.front();
345 TrackIter t_iter = b_iter.track_iter();
346 if(wp.has_track(*t_iter))
348 for(; t_iter; t_iter=t_iter.next())
350 if(!wp.has_track(*t_iter))
352 waypoints.erase(waypoints.begin());
353 signal_waypoint_reached.emit(&wp);
354 signal_event.emit(Message("waypoint-reached", &wp));
357 else if(!block.has_track(*t_iter))
364 void TrainRouter::train_rear_advanced(Block &block)
366 Track &track = *train.get_block_allocator().iter_for(block).endpoint().track;
368 // Have we left some routes completely behind?
369 for(RouteList::iterator i=routes.begin(); i!=routes.end(); ++i)
370 if((*i)->has_track(track))
372 if(i!=routes.begin())
374 routes.erase(routes.begin(), i);
375 const Route *route = get_route();
376 signal_route_changed.emit(route);
377 signal_event.emit(Message("route-changed", route));
383 void TrainRouter::create_metrics()
385 for(vector<TrainRouteMetric *>::iterator i=metrics.begin(); i!=metrics.end(); ++i)
392 metrics.push_back(new TrainRouteMetric(*destination));
393 for(vector<const TrackChain *>::const_iterator i=waypoints.begin(); i!=waypoints.end(); ++i)
394 metrics.push_back(new TrainRouteMetric(**i));
396 for(unsigned i=metrics.size(); --i>0; )
397 metrics[i]->chain_to(*metrics[(i+1)%metrics.size()]);
400 Route *TrainRouter::create_lead_route(Route *lead, const Route *target)
404 lead = new Route(train.get_layout());
405 lead->set_name("Lead");
406 lead->set_temporary(true);
409 bool target_reached = false;
410 for(TrackIter i=train.get_block_allocator().first().track_iter(); i; i=i.next())
412 if(i->get_block().get_train()!=&train)
416 if(target->has_track(*i))
417 target_reached = true;
418 else if(target_reached)
427 bool TrainRouter::is_valid_for_track(const Route &route, Track &track) const
429 if(!route.has_track(track))
431 if(track.get_type().is_turnout() && route.get_turnout(track.get_turnout_address())<0)
436 bool TrainRouter::advance_to_track(RouteList::iterator &route, Track &track)
438 if(!is_valid_for_track(**route, track))
441 if(route==routes.end())
443 if(!is_valid_for_track(**route, track))
444 throw logic_error("internal error (routes are not continuous)");
450 void TrainRouter::start_planning(Layout &layout)
452 RefPtr<TrainRoutePlanner> planner = new TrainRoutePlanner(layout);
454 const map<unsigned, Train *> &trains = layout.get_trains();
455 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
456 if(TrainRouter *router = i->second->get_ai_of_type<TrainRouter>())
458 if(router->metrics_stale)
460 router->create_metrics();
461 router->metrics_stale = false;
463 router->planner = planner;
470 TrainRouter::SequencePoint::SequencePoint(Block &b, unsigned o):
477 bool TrainRouter::SequencePoint::is_cleared() const
482 TrainRouter *router = preceding_train->get_ai_of_type<TrainRouter>();
483 return router->get_current_sequence()>=sequence_in;
487 TrainRouter::Loader::Loader(TrainRouter &r):
488 DataFile::ObjectLoader<TrainRouter>(r)
490 add("priority", &TrainRouter::priority);
491 add("route", &Loader::route);
494 void TrainRouter::Loader::route(const string &n)
496 obj.set_route(&obj.train.get_layout().get_route(n));