+void Layout::add_block(Block &b)
+{
+ blocks.insert(&b);
+}
+
+Block &Layout::get_block(unsigned id) const
+{
+ for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ if((*i)->get_id()==id)
+ return **i;
+
+ throw KeyError("Unknown block", lexical_cast(id));
+}
+
+Block &Layout::get_block_by_track(const Track &t) const
+{
+ for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ if((*i)->get_tracks().count(const_cast<Track *>(&t)))
+ return **i;
+
+ throw InvalidParameterValue("No block found for track");
+}
+
+void Layout::create_blocks()
+{
+ set<Track *> used_tracks;
+ for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ {
+ const set<Track *> &btracks = (*i)->get_tracks();
+ used_tracks.insert(btracks.begin(), btracks.end());
+ }
+
+ for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
+ if(used_tracks.count(*i)==0)
+ {
+ Block *block = new Block(*this, **i);
+ used_tracks.insert(block->get_tracks().begin(), block->get_tracks().end());
+ }
+
+ for(set<Block *>::iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ for(set<Block *>::iterator j=i; j!=blocks.end(); ++j)
+ if(j!=i)
+ (*i)->check_link(**j);
+}
+
+void Layout::create_blocks(const Track &track)
+{
+ const vector<Track *> &links = track.get_links();
+ for(set<Block *>::iterator i=blocks.begin(); i!=blocks.end();)
+ {
+ bool del = (*i)->get_tracks().count(const_cast<Track *>(&track));
+ for(vector<Track *>::const_iterator j=links.begin(); (!del && j!=links.end()); ++j)
+ del = (*i)->get_tracks().count(*j);
+
+ if(del)
+ delete *i++;
+ else
+ ++i;
+ }
+
+ create_blocks();
+}
+
+void Layout::remove_block(Block &b)
+{
+ blocks.erase(&b);
+}
+
+void Layout::add_route(Route &r)
+{
+ if(routes.count(r.get_name()))
+ throw KeyError("Duplicate route name", r.get_name());
+
+ routes[r.get_name()] = &r;
+ signal_route_added.emit(r);
+}
+
+Route &Layout::get_route(const string &name) const
+{
+ map<string, Route *>::const_iterator i = routes.find(name);
+ if(i==routes.end())
+ throw KeyError("Unknown route", name);
+ return *i->second;
+}
+
+void Layout::remove_route(Route &r)
+{
+ if(routes.erase(r.get_name()))
+ signal_route_removed.emit(r);
+}
+
+void Layout::add_train(Train &t)
+{
+ if(trains.count(t.get_address()))
+ throw KeyError("Duplicate train address", lexical_cast(t.get_address()));
+
+ trains[t.get_address()] = &t;
+ signal_train_added.emit(t);
+}
+
+Train &Layout::get_train(unsigned addr) const
+{
+ map<unsigned, Train *>::const_iterator i = trains.find(addr);
+ if(i==trains.end())
+ throw KeyError("Unknown train", lexical_cast(addr));
+ return *i->second;
+}
+
+void Layout::remove_train(Train &t)
+{
+ if(trains.erase(t.get_address()))
+ signal_train_removed.emit(t);
+}
+
+void Layout::add_vehicle(Vehicle &v)
+{
+ if(vehicles.insert(&v).second)
+ signal_vehicle_added.emit(v);
+}
+
+void Layout::remove_vehicle(Vehicle &v)
+{
+ if(vehicles.erase(&v))
+ signal_vehicle_removed.emit(v);
+}
+
+void Layout::tick()
+{
+ if(driver)
+ driver->tick();
+
+ Time::TimeStamp t = Time::now();
+ Time::TimeDelta dt;
+ if(last_tick)
+ dt = t-last_tick;
+ last_tick = t;
+
+ for(map<unsigned, Train *>::iterator i=trains.begin(); i!=trains.end(); ++i)
+ i->second->tick(t, dt);
+}
+
+void Layout::emergency(const string &msg)
+{
+ if(driver)
+ driver->halt(true);
+ IO::print("Emergency: %s\n", msg);
+ signal_emergency.emit(msg);
+}
+
+void Layout::save(const string &fn)
+{
+ IO::BufferedFile out(fn, IO::M_WRITE);
+ DataFile::Writer writer(out);
+
+ if(!base.empty())
+ writer.write((DataFile::Statement("base"), base));
+
+ for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
+ {
+ DataFile::Statement st("track");
+ st.append((*i)->get_type().get_article_number());
+ (*i)->save(st.sub);
+ writer.write(st);
+ }
+
+ for(map<string, Route *>::iterator i=routes.begin(); i!=routes.end(); ++i)
+ {
+ if(i->second->is_temporary())
+ continue;
+
+ DataFile::Statement st("route");
+ st.append(i->first);
+ i->second->save(st.sub);
+ writer.write(st);
+ }
+}
+
+void Layout::save_trains(const string &fn)
+{
+ IO::BufferedFile out(fn, IO::M_WRITE);
+ DataFile::Writer writer(out);
+
+ for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
+ {
+ DataFile::Statement st("train");
+ st.append(i->second->get_locomotive_type().get_article_number());
+ st.append(i->second->get_address());
+ i->second->save(st.sub);
+ writer.write(st);
+ }
+}
+