source/libr2c2/timetable.cpp

   1 #include <algorithm>
   2 #include <msp/strings/format.h>
   3 #include "aicontrol.h"
   4 #include "clock.h"
   5 #include "layout.h"
   6 #include "timetable.h"
   7 #include "train.h"
   8 #include "trainrouter.h"
   9 #include "zone.h"
  10
  11 using namespace std;
  12 using namespace Msp;
  13
  14 namespace R2C2 {
  15
  16 Timetable::Timetable(Train &t):
  17         TrainAI(t),
  18         current_row(rows.end()),
  19         update_pending(false),
  20         sync_to_clock(true)
  21 {
  22         if(!train.get_ai_of_type<AIControl>())
  23                 new AIControl(train);
  24         if(!train.get_ai_of_type<TrainRouter>())
  25                 new TrainRouter(train);
  26
  27         train.signal_ai_event.connect(sigc::mem_fun(this, &Timetable::event));
  28         train.get_layout().get_clock().signal_discontinuity.connect(sigc::mem_fun(this, &Timetable::clock_discontinuity));
  29 }
  30
  31 void Timetable::append_row(const Row &r)
  32 {
  33         insert_row(rows.size(), r);
  34 }
  35
  36 void Timetable::insert_row(unsigned i, const Row &r)
  37 {
  38         if(i>rows.size())
  39                 throw out_of_range("Timetable::insert_row");
  40
  41         list<Row>::iterator j = rows.begin();
  42         advance(j, i);
  43         j = rows.insert(j, r);
  44         signal_row_added.emit(i, *j);
  45
  46         check_update(j);
  47 }
  48
  49 void Timetable::modify_row(unsigned i, const Row &r)
  50 {
  51         if(i>=rows.size())
  52                 throw out_of_range("Timetable::remove_row");
  53
  54         list<Row>::iterator j = rows.begin();
  55         advance(j, i);
  56         *j = r;
  57         signal_row_modified.emit(i, r);
  58
  59         check_update(j);
  60 }
  61
  62 void Timetable::remove_row(unsigned i)
  63 {
  64         if(i>=rows.size())
  65                 throw out_of_range("Timetable::remove_row");
  66
  67         list<Row>::iterator j = rows.begin();
  68         advance(j, i);
  69
  70         check_update(j);
  71         if(j==current_row)
  72                 --current_row;
  73
  74         rows.erase(j);
  75         signal_row_removed.emit(i);
  76 }
  77
  78 const Timetable::Row &Timetable::get_row(unsigned i) const
  79 {
  80         if(i>=rows.size())
  81                 throw out_of_range("Timetable::get_row");
  82
  83         list<Row>::const_iterator j = rows.begin();
  84         advance(j, i);
  85         return *j;
  86 }
  87
  88 void Timetable::tick(const Time::TimeDelta &dt)
  89 {
  90         if(update_pending && !train.get_block_allocator().is_active())
  91                 update_route();
  92
  93         if(current_row->type==DEPART)
  94         {
  95                 const Clock &clock = train.get_layout().get_clock();
  96
  97                 Time::TimeDelta t = clock.get_current_time();
  98                 if(t<current_row->time)
  99                         t += Time::day;
 100
 101                 Time::TimeDelta b = t-dt*clock.get_rate();
 102                 if(b<current_row->time)
 103                 {
 104                         train.ai_message(Message("set-target-speed", train.get_maximum_speed()));
 105                         ++current_row;
 106                 }
 107         }
 108 }
 109
 110 void Timetable::save(list<DataFile::Statement> &st) const
 111 {
 112         for(list<Row>::const_iterator i=rows.begin(); i!=rows.end(); ++i)
 113         {
 114                 DataFile::Statement ss("row");
 115                 i->save(ss.sub);
 116                 st.push_back(ss);
 117         }
 118 }
 119
 120 void Timetable::check_update(const list<Row>::const_iterator &i)
 121 {
 122         for(list<Row>::const_iterator j=current_row; (j!=rows.end() && j!=i); ++j)
 123                 if(j->type==ARRIVE)
 124                         return;
 125         update_pending = true;
 126 }
 127
 128 list<Timetable::Row>::iterator Timetable::find_trip(const list<Row>::iterator &begin, list<Row>::iterator *arrive)
 129 {
 130         list<Row>::iterator i = find_if(begin, rows.end(), RowTypeMatch(DEPART));
 131         if(i==rows.end())
 132                 return i;
 133
 134         list<Row>::iterator j = find_if(i, rows.end(), RowTypeMatch(ARRIVE));
 135         if(j==rows.end())
 136                 return j;
 137
 138         if(arrive)
 139                 *arrive = j;
 140         return i;
 141 }
 142
 143 void Timetable::update_route()
 144 {
 145         update_pending = false;
 146         if(rows.empty())
 147                 return;
 148
 149         const Clock &clock = train.get_layout().get_clock();
 150
 151         if(sync_to_clock)
 152         {
 153                 sync_to_clock = false;
 154                 current_row = rows.begin();
 155                 for(list<Row>::iterator i=rows.begin(); i!=rows.end(); ++i)
 156                         if(i->type==DEPART && i->time>=clock.get_current_time())
 157                         {
 158                                 current_row = i;
 159                                 break;
 160                         }
 161         }
 162
 163         list<Row>::iterator arrive;
 164         list<Row>::iterator depart = find_trip(current_row, &arrive);
 165         if(depart==rows.end())
 166         {
 167                 depart = find_trip(rows.begin(), &arrive);
 168                 if(depart==rows.end())
 169                 {
 170                         current_row = rows.end();
 171                         return;
 172                 }
 173         }
 174
 175         train.ai_message(Message("clear-route"));
 176
 177         current_row = depart;
 178         for(list<Row>::const_iterator i=depart; i!=rows.end(); ++i)
 179         {
 180                 if(i->type==DEPART)
 181                 {
 182                         Time::TimeDelta dt = i->time-clock.get_current_time();
 183                         while(dt<Time::zero)
 184                                 dt += Time::day;
 185                         train.ai_message(Message("set-departure-delay", dt/clock.get_rate()));
 186                 }
 187                 else
 188                 {
 189                         train.ai_message(Message("add-waypoint", TrainRouter::Waypoint(*i->target, i->direction)));
 190                         if(i->type==ARRIVE)
 191                                 break;
 192                 }
 193         }
 194
 195         list<Row>::iterator next_depart = find_trip(arrive, 0);
 196         if(next_depart==rows.end())
 197                 next_depart = find_trip(rows.begin(), 0);
 198         if(next_depart!=rows.end())
 199         {
 200                 Time::TimeDelta dt = next_depart->time-depart->time;
 201                 while(dt<=Time::zero)
 202                         dt += Time::day;
 203                 train.ai_message(Message("set-trip-duration", dt/clock.get_rate()));
 204         }
 205 }
 206
 207 void Timetable::event(TrainAI &, const Message &msg)
 208 {
 209         if(msg.type=="arrived")
 210         {
 211                 if(current_row->type==ARRIVE)
 212                         record_time();
 213                 update_pending = true;
 214         }
 215         else if(msg.type=="waypoint-reached")
 216         {
 217                 const TrackChain *wp = msg.value.value<const TrackChain *>();
 218                 if(current_row->type==THROUGH && current_row->target==wp)
 219                 {
 220                         record_time();
 221                         ++current_row;
 222                 }
 223         }
 224 }
 225
 226 void Timetable::record_time()
 227 {
 228         current_row->time = train.get_layout().get_clock().get_current_time();
 229         unsigned i = distance(rows.begin(), current_row);
 230         signal_row_modified.emit(i, *current_row);
 231 }
 232
 233 void Timetable::clock_discontinuity()
 234 {
 235         update_pending = true;
 236         sync_to_clock = true;
 237 }
 238
 239
 240 Timetable::Row::Row():
 241         type(ARRIVE),
 242         target(0),
 243         direction(TrackChain::UNSPECIFIED)
 244 { }
 245
 246 void Timetable::Row::save(list<DataFile::Statement> &st) const
 247 {
 248         st.push_back((DataFile::Statement("type"), type));
 249         st.push_back((DataFile::Statement("time"), time.raw()));
 250         st.push_back(target->save_reference());
 251         if(direction)
 252                 st.push_back((DataFile::Statement("direction"), direction));
 253 }
 254
 255
 256 Timetable::Loader::Loader(Timetable &t, Layout &l):
 257         DataFile::ObjectLoader<Timetable>(t),
 258         layout(l)
 259 {
 260         add("row", &Loader::row);
 261 }
 262
 263 void Timetable::Loader::row()
 264 {
 265         Row r;
 266         load_sub(r, layout);
 267         obj.rows.push_back(r);
 268         obj.update_pending = true;
 269 }
 270
 271
 272 Timetable::Row::Loader::Loader(Row &r, Layout &l):
 273         DataFile::ObjectLoader<Timetable::Row>(r),
 274         layout(l)
 275 {
 276         add("block", &Loader::block);
 277         add("direction", &Row::direction);
 278         add("time", &Loader::time);
 279         add("type", &Row::type);
 280         add("zone", &Loader::zone);
 281         add("zone", &Loader::zone_numbered);
 282 }
 283
 284 void Timetable::Row::Loader::block(unsigned id)
 285 {
 286         obj.target = &layout.get_block(id);
 287 }
 288
 289 void Timetable::Row::Loader::time(Time::RawTime t)
 290 {
 291         obj.time = Time::TimeDelta(t);
 292 }
 293
 294 void Timetable::Row::Loader::zone(const string &name)
 295 {
 296         zone_numbered(name, 0);
 297 }
 298
 299 void Timetable::Row::Loader::zone_numbered(const string &name, unsigned number)
 300 {
 301         obj.target = &layout.get_zone(name, number);
 302 }
 303
 304
 305 void operator<<(LexicalConverter &conv, Timetable::RowType rt)
 306 {
 307         switch(rt)
 308         {
 309         case Timetable::ARRIVE: conv.result("ARRIVE"); return;
 310         case Timetable::DEPART: conv.result("DEPART"); return;
 311         case Timetable::THROUGH: conv.result("THROUGH"); return;
 312         default: throw lexical_error(format("conversion of RowType(%d) to string", rt));
 313         }
 314 }
 315
 316 void operator>>(const LexicalConverter &conv, Timetable::RowType &rt)
 317 {
 318         if(conv.get()=="ARRIVE")
 319                 rt = Timetable::ARRIVE;
 320         else if(conv.get()=="DEPART")
 321                 rt = Timetable::DEPART;
 322         else if(conv.get()=="THROUGH")
 323                 rt = Timetable::THROUGH;
 324         else
 325                 throw lexical_error(format("conversion of '%s' to RowType", conv.get()));
 326 }
 327
 328 } // namespace R2C2