#include "route.h"
#include "trackiter.h"
#include "train.h"
+#include "trackchain.h"
+#include "trainroutemetric.h"
+#include "trainrouteplanner.h"
#include "trainrouter.h"
-#include "zone.h"
using namespace std;
using namespace Msp;
TrainRouter::TrainRouter(Train &t):
TrainAI(t),
priority(0),
- arriving(false),
- yielding_to(0)
+ arriving(0),
+ destination(0),
+ update_pending(false)
{
train.get_layout().signal_block_reserved.connect(sigc::mem_fun(this, &TrainRouter::block_reserved));
train.signal_advanced.connect(sigc::mem_fun(this, &TrainRouter::train_advanced));
}
-void TrainRouter::set_priority(int p)
+TrainRouter::~TrainRouter()
{
- priority = p;
+ for(vector<TrainRouteMetric *>::iterator i=metrics.begin(); i!=metrics.end(); ++i)
+ delete *i;
}
-void TrainRouter::yield_to(const Train &t)
+void TrainRouter::set_priority(int p)
{
- yielding_to = &t;
+ priority = p;
}
bool TrainRouter::set_route(const Route *r)
{
- train.free_noncritical_blocks();
+ BlockIter fncb = train.get_first_noncritical_block();
Route *lead = 0;
if(r && train.is_placed())
{
- TrackIter first = train.get_tail_block().track_iter();
- TrackIter next = train.get_head_block().next().track_iter();
+ const BlockAllocator &allocator = train.get_block_allocator();
+ TrackIter first = allocator.first().track_iter();
+ TrackIter next = fncb.track_iter();
if(!r->has_track(*next))
{
lead = Route::find(next, *r);
if(r)
routes.push_back(r);
train.stop_at(0);
- arriving = false;
+ arriving = 0;
+
+ /* TODO destination should also be cleared when manually setting a different
+ route, but not when the planner calls this. */
+ if(!r)
+ {
+ destination = 0;
+ waypoints.clear();
+ }
- train.reserve_more();
+ train.refresh_blocks_from(*fncb);
const Route *route = get_route();
signal_route_changed.emit(route);
return true;
}
-bool TrainRouter::go_to(Track &to)
+bool TrainRouter::add_route(const Route &r)
{
- if(!train.get_speed())
- {
- for(BlockIter i=train.get_tail_block(); (i && i->get_train()==&train); i=i.next())
- if(i->has_track(to))
- {
- signal_arrived.emit();
- signal_event.emit(Message("arrived"));
- return set_route(0);
- }
- }
+ if(routes.empty())
+ return set_route(&r);
- train.free_noncritical_blocks();
+ // TODO Check that it can be reached from previous routes
+ routes.push_back(&r);
- TrackIter next = train.get_head_block().next().track_iter();
+ return true;
+}
- Route *route = Route::find(next, to);
- if(!route)
- return false;
- create_lead_route(route, route);
- return set_route(route);
+void TrainRouter::add_wait(Block &block, Train *tr)
+{
+ Wait wait;
+ wait.block = █
+ wait.train = tr;
+ waits.push_back(wait);
}
-bool TrainRouter::go_to(const Zone &to)
+const Route *TrainRouter::get_route() const
{
- set<Track *> tracks;
- for(BlockIter i=train.get_tail_block(); (i && i->get_train()==&train); i=i.next())
- tracks.insert(i->get_tracks().begin(), i->get_tracks().end());
+ if(routes.empty())
+ return 0;
+ return routes.front();
+}
- const Zone::TrackSet &ztracks = to.get_tracks();
- unsigned union_size = 0;
- for(Zone::TrackSet::const_iterator i=ztracks.begin(); i!=ztracks.end(); ++i)
- union_size += tracks.count(*i);
+void TrainRouter::set_destination(const TrackChain &d)
+{
+ destination = &d;
+ update_pending = true;
+}
- if(union_size==tracks.size() || union_size==ztracks.size())
- {
- signal_arrived.emit();
- signal_event.emit(Message("arrived"));
- return set_route(0);
- }
+bool TrainRouter::is_destination(Track &track) const
+{
+ if(destination)
+ return destination->has_track(track);
+ else
+ return false;
+}
- train.free_noncritical_blocks();
+void TrainRouter::add_waypoint(const TrackChain &wp)
+{
+ waypoints.push_back(&wp);
+ update_pending = true;
+}
- TrackIter next = train.get_head_block().next().track_iter();
+bool TrainRouter::is_waypoint(unsigned index, Track &track) const
+{
+ if(index>=waypoints.size())
+ throw out_of_range("TrainRouter::is_waypoint");
- Route *route = Route::find(next, to);
- if(!route)
- return false;
- create_lead_route(route, route);
- route->add_tracks(ztracks);
- return set_route(route);
+ return waypoints[index]->has_track(track);
}
-const Route *TrainRouter::get_route() const
+const TrainRouteMetric &TrainRouter::get_metric(int index) const
{
- if(routes.empty())
- return 0;
- return routes.front();
+ if(!destination)
+ throw logic_error("no metrics");
+ else if(update_pending)
+ throw logic_error("metrics are stale");
+
+ if(index<0)
+ return *metrics.front();
+ else if(static_cast<unsigned>(index)>=waypoints.size())
+ throw out_of_range("TrainRouter::get_metric");
+ else
+ return *metrics[index+1];
+}
+
+void TrainRouter::set_departure_delay(const Time::TimeDelta &d)
+{
+ delay = d;
+ update_pending = true;
}
void TrainRouter::message(const Message &msg)
}
else if(msg.type=="clear-route")
set_route(0);
- else if(msg.type=="go-to-track")
- go_to(*msg.value.value<Track *>());
- else if(msg.type=="go-to-zone")
+ else if(msg.type=="set-destination")
+ {
+ if(msg.value.check_type<TrackChain *>())
+ set_destination(*msg.value.value<TrackChain *>());
+ else
+ set_destination(*msg.value.value<const TrackChain *>());
+ }
+ else if(msg.type=="add-waypoint")
{
- if(msg.value.check_type<Zone *>())
- go_to(*msg.value.value<Zone *>());
+ if(msg.value.check_type<TrackChain *>())
+ add_waypoint(*msg.value.value<TrackChain *>());
else
- go_to(*msg.value.value<const Zone *>());
+ add_waypoint(*msg.value.value<const TrackChain *>());
}
+ else if(msg.type=="set-departure-delay")
+ set_departure_delay(msg.value.value<Time::TimeDelta>());
}
-void TrainRouter::tick(const Time::TimeStamp &, const Time::TimeDelta &)
+void TrainRouter::tick(const Time::TimeDelta &dt)
{
- if(arriving && !train.get_speed())
+ if(delay)
{
- train.set_active(false);
- signal_arrived.emit();
- signal_event.emit(Message("arrived"));
- set_route(0);
+ delay -= dt;
+ if(delay<=Time::zero)
+ delay = Time::zero;
}
+
+ if(update_pending)
+ create_plans(train.get_layout());
+
+ if(arriving==1 && !train.get_speed())
+ {
+ signal_arrived.emit(destination);
+ signal_event.emit(Message("arrived", destination));
+ arriving = 2;
+ }
+ else if(arriving==2 && !train.get_block_allocator().is_active())
+ set_route(0);
}
void TrainRouter::save(list<DataFile::Statement> &st) const
{
- if(!tag.empty())
- st.push_back((DataFile::Statement("tag"), tag));
-
st.push_back((DataFile::Statement("priority"), priority));
if(!routes.empty())
void TrainRouter::block_reserved(Block &block, Train *t)
{
if(t!=&train)
+ {
+ if(!waits.empty() && waits.front().block==&block)
+ {
+ train.stop_at(0);
+ waits.pop_front();
+ }
return;
+ }
- yielding_to = 0;
-
- BlockIter b_iter(&block, t->get_entry_to_block(block));
- BlockIter b_iter_next;
+ BlockIter b_iter = t->get_block_allocator().iter_for(block);
RouteList::iterator route = routes.begin();
if(advance_route(route, block))
{
// Check if the block is a turnout and set it to proper path
- if(unsigned tid = block.get_turnout_id())
+ if(unsigned taddr = block.get_turnout_address())
{
- int path = (*route)->get_turnout(tid);
+ int path = (*route)->get_turnout(taddr);
if(path>=0)
b_iter.track_iter()->set_active_path(path);
}
// Check if the next block is still part of the designated route
- b_iter_next = b_iter.next(*route);
+ BlockIter b_iter_next = b_iter.next(*route);
RouteList::iterator next_route = route;
if(!advance_route(next_route, *b_iter_next))
return;
}
- }
- else
- b_iter_next = b_iter.next();
-
- // Check if there's another train and ask it to free the block if appropriate
- if(b_iter_next)
- {
- if(Train *other_train = b_iter_next->get_train())
- {
- /* There's another train ahead of us. If it wants to exit the block
- from the same endpoint we're trying to enter from or the other way
- around, treat it as coming towards us. Otherwise treat it as going
- in the same direction. */
- int other_entry = other_train->get_entry_to_block(*b_iter_next);
- if(other_entry<0)
- throw logic_error("block reservation inconsistency");
-
- unsigned exit = b_iter_next.reverse().entry();
- unsigned other_exit = BlockIter(b_iter_next.block(), other_entry).reverse().entry();
- bool entry_conflict = (b_iter_next.entry()==other_exit);
- bool exit_conflict = (exit==static_cast<unsigned>(other_entry));
- // TODO: speed matching with preceding train
-
- // XXX Should invent a better way to get our counterpart from the other train
- TrainRouter *other_router = dynamic_cast<TrainRouter *>(other_train->get_tagged_ai("router"));
- int other_prio = (other_router ? other_router->get_priority() : 0);
-
- if(!entry_conflict && !exit_conflict && other_prio<priority)
- {
- /* Ask a lesser priority train going to the same direction to free
- the block for us */
- other_train->free_block(*b_iter_next);
- }
- else if(other_train!=yielding_to && (other_prio<priority || (other_prio==priority && entry_conflict)))
- {
- /* A lesser priority train is coming at us, we must ask it to free
- enough blocks to get clear of it to avoid a potential deadlock */
- BlockIter last_contested;
- RouteList::iterator j = route;
- for(BlockIter i=b_iter_next; (i && i->get_train()==other_train);)
- {
- if(!advance_route(j, *i))
- break;
- last_contested = i;
- i = i.next(*j);
- }
-
- if(last_contested)
- {
- if(other_train->free_block(*last_contested))
- other_router->yield_to(train);
- else
- yield_to(*other_train);
- }
- }
- }
+ if(!waits.empty() && waits.front().block==b_iter_next.block())
+ train.stop_at(&block);
}
}
void TrainRouter::train_advanced(Block &block)
{
+ BlockIter b_iter = train.get_block_allocator().iter_for(block);
+
// Check if we've reached the next route
if(routes.size()>1)
{
- unsigned entry = train.get_entry_to_block(block);
- Track &track = *block.get_endpoint(entry).track;
const Route &route = **++routes.begin();
- if(route.has_track(track))
+ if(route.has_track(*b_iter.endpoint().track))
{
routes.pop_front();
+ const Route *r = get_route();
// XXX Exceptions?
- signal_event.emit(Message("route-changed", get_route()));
+ signal_route_changed.emit(r);
+ signal_event.emit(Message("route-changed", r));
}
}
- BlockIter iter(&block, train.get_entry_to_block(block));
- iter = iter.next();
- if(iter && !is_on_route(*iter))
- arriving = true;
+ if(!waypoints.empty())
+ {
+ const TrackChain &wp = *waypoints.front();
+ TrackIter t_iter = b_iter.track_iter();
+ if(wp.has_track(*t_iter))
+ {
+ for(; t_iter; t_iter=t_iter.next())
+ {
+ if(!wp.has_track(*t_iter))
+ {
+ waypoints.erase(waypoints.begin());
+ signal_waypoint_reached.emit(&wp);
+ signal_event.emit(Message("waypoint-reached", &wp));
+ break;
+ }
+ else if(!block.has_track(*t_iter))
+ break;
+ }
+ }
+ }
+
+ if(!routes.empty())
+ {
+ b_iter = b_iter.next();
+ if(b_iter && !is_on_route(*b_iter))
+ arriving = 1;
+ }
}
const Route *TrainRouter::get_route_for_block(const Block &block) const
return 0;
}
+void TrainRouter::create_metrics()
+{
+ for(vector<TrainRouteMetric *>::iterator i=metrics.begin(); i!=metrics.end(); ++i)
+ delete *i;
+ metrics.clear();
+
+ if(!destination)
+ return;
+
+ metrics.push_back(new TrainRouteMetric(*destination));
+ for(vector<const TrackChain *>::const_iterator i=waypoints.begin(); i!=waypoints.end(); ++i)
+ metrics.push_back(new TrainRouteMetric(**i));
+
+ for(unsigned i=metrics.size(); --i>0; )
+ metrics[i]->chain_to(*metrics[(i+1)%metrics.size()]);
+}
+
Route *TrainRouter::create_lead_route(Route *lead, const Route *target)
{
if(!lead)
lead->set_temporary(true);
}
- set<Track *> tracks;
- for(BlockIter i=train.get_tail_block(); (i && i->get_train()==&train); i=i.next())
+ bool target_reached = false;
+ for(TrackIter i=train.get_block_allocator().first().track_iter(); i; i=i.next())
{
- const set<Track *> &btracks = i->get_tracks();
- for(set<Track *>::const_iterator j=btracks.begin(); j!=btracks.end(); ++j)
- if(!target || !target->has_track(**j))
- tracks.insert(*j);
+ if(i->get_block().get_train()!=&train)
+ break;
+ if(target)
+ {
+ if(target->has_track(*i))
+ target_reached = true;
+ else if(target_reached)
+ break;
+ }
+ lead->add_track(*i);
}
- lead->add_tracks(tracks);
-
return lead;
}
return advance_route(iter, block);
}
+void TrainRouter::create_plans(Layout &layout)
+{
+ const map<unsigned, Train *> &trains = layout.get_trains();
+ for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
+ if(TrainRouter *router = i->second->get_ai_of_type<TrainRouter>())
+ {
+ if(router->update_pending)
+ router->create_metrics();
+ router->update_pending = false;
+ }
+
+ TrainRoutePlanner planner(layout);
+ planner.plan();
+}
+
+
+TrainRouter::Wait::Wait():
+ block(0),
+ train(0)
+{ }
+
TrainRouter::Loader::Loader(TrainRouter &r):
DataFile::ObjectLoader<TrainRouter>(r)
{
add("priority", &TrainRouter::priority);
add("route", &Loader::route);
- add("tag", &Loader::tag);
}
void TrainRouter::Loader::route(const string &n)
obj.set_route(&obj.train.get_layout().get_route(n));
}
-void TrainRouter::Loader::tag(const string &t)
-{
- obj.set_tag(t);
-}
-
} // namespace R2C2
projects / r2c2.git / blobdiff