source/libr2c2/signal.cpp

   1 #include "blockiter.h"
   2 #include "catalogue.h"
   3 #include "driver.h"
   4 #include "layout.h"
   5 #include "signal.h"
   6 #include "signaltype.h"
   7 #include "trackiter.h"
   8 #include "tracktype.h"
   9 #include "train.h"
  10
  11 using namespace std;
  12 using namespace Msp;
  13
  14 namespace R2C2 {
  15
  16 Signal::Signal(Layout &l, const SignalType &t):
  17         Object(l),
  18         type(t),
  19         address(0),
  20         track(0),
  21         block(0),
  22         entry(0),
  23         train(0),
  24         check_allocated_blocks(false),
  25         passing(false)
  26 {
  27         layout.add_signal(*this);
  28
  29         layout.signal_block_reserved.connect(sigc::mem_fun(this, &Signal::block_reserved));
  30 }
  31
  32 Signal::~Signal()
  33 {
  34         layout.remove_signal(*this);
  35 }
  36
  37 Signal *Signal::clone(Layout *to_layout) const
  38 {
  39         Signal *sig = new Signal((to_layout ? *to_layout : layout), type);
  40         sig->set_position(position);
  41         sig->set_rotation(rotation);
  42         return sig;
  43 }
  44
  45 void Signal::set_address(unsigned a)
  46 {
  47         address = a;
  48
  49         if(layout.has_driver() && address)
  50                 layout.get_driver().add_signal(address, type);
  51 }
  52
  53 void Signal::set_position(const Vector &p)
  54 {
  55         position = p;
  56
  57         update_location();
  58 }
  59
  60 void Signal::update_location()
  61 {
  62         const set<Track *> &tracks = layout.get_tracks();
  63         float limit = layout.get_catalogue().get_gauge()*2;
  64         float dist = -1;
  65         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
  66                 if(!(*i)->get_type().is_turnout())
  67                 {
  68                         Snap sn;
  69                         sn.position = position;
  70                         sn.rotation = rotation;
  71                         (*i)->snap(sn, limit, SNAP_SEGMENT);
  72                         float d = distance(position, sn.position);
  73                         if(d<dist || dist<0)
  74                         {
  75                                 track = *i;
  76                                 dist = d;
  77                         }
  78                 }
  79
  80         block = 0;
  81
  82         if(!track)
  83                 return;
  84
  85         unsigned n_endpoints = track->get_type().get_endpoints().size();
  86         for(unsigned j=0; j<n_endpoints; ++j)
  87         {
  88                 Angle a = wrap_with_base(track->get_snap_node(j).rotation-rotation, -Angle::quarter_turn());
  89                 if(a>=Angle::quarter_turn())
  90                 {
  91                         BlockIter biter = TrackIter(track, j).block_iter();
  92                         if(biter)
  93                         {
  94                                 block = &track->get_block();
  95                                 entry = biter.entry();
  96                         }
  97                 }
  98         }
  99 }
 100
 101 void Signal::set_rotation(const Angle &r)
 102 {
 103         rotation = r;
 104
 105         update_location();
 106 }
 107
 108 unsigned Signal::get_n_snap_nodes() const
 109 {
 110         return 1;
 111 }
 112
 113 Snap Signal::get_snap_node(unsigned i) const
 114 {
 115         if(i>=1)
 116                 throw out_of_range("Signal::get_snap_node");
 117
 118         Snap sn;
 119         sn.position = position;
 120         sn.rotation = rotation;
 121         return sn;
 122 }
 123
 124 SnapType Signal::get_default_snap_type_to(const Object &other) const
 125 {
 126         if(dynamic_cast<const Track *>(&other))
 127                 return SNAP_SEGMENT;
 128
 129         return NO_SNAP;
 130 }
 131
 132 void Signal::tick(const Time::TimeDelta &)
 133 {
 134         if(check_allocated_blocks)
 135         {
 136                 unsigned n_blocks = 0;
 137                 BlockIter iter(block, entry);
 138                 iter = iter.next();
 139                 while(iter && iter->get_train()==train)
 140                 {
 141                         if(iter->get_sensor_id())
 142                                 ++n_blocks;
 143                         iter=iter.next();
 144                 }
 145                 check_allocated_blocks = false;
 146
 147                 const list<SignalType::Indication> &indications = type.get_indications();
 148                 unsigned aspect = indications.back().aspect;
 149                 for(list<SignalType::Indication>::const_iterator i=indications.begin(); i!=indications.end(); ++i)
 150                         if(n_blocks>=i->free_blocks)
 151                         {
 152                                 aspect = i->aspect;
 153                                 break;
 154                         }
 155
 156                 layout.get_driver().set_signal(address, aspect);
 157         }
 158 }
 159
 160 void Signal::block_reserved(const Block &b, Train *t)
 161 {
 162         if(&b==block)
 163         {
 164                 if(t)
 165                 {
 166                         const BlockIter &b_iter = t->get_block_allocator().iter_for(b);
 167                         if(b_iter && b_iter.entry()==entry)
 168                         {
 169                                 if(train_conn)
 170                                         train_conn.disconnect();
 171                                 train = t;
 172                                 passing = false;
 173                                 train_conn = train->signal_advanced.connect(sigc::mem_fun(this, &Signal::train_advanced));
 174                                 check_allocated_blocks = true;
 175                         }
 176                 }
 177                 else
 178                 {
 179                         layout.get_driver().set_signal(address, type.get_indications().back().aspect);
 180                         reset();
 181                 }
 182         }
 183         else if(train && t==train)
 184                 check_allocated_blocks = true;
 185 }
 186
 187 void Signal::train_advanced(Block &b)
 188 {
 189         if(&b==block)
 190                 passing = true;
 191         else if(passing && b.get_sensor_id())
 192         {
 193                 layout.get_driver().set_signal(address, type.get_indications().back().aspect);
 194                 reset();
 195         }
 196 }
 197
 198 void Signal::reset()
 199 {
 200         train = 0;
 201         if(train_conn)
 202                 train_conn.disconnect();
 203         check_allocated_blocks = false;
 204 }
 205
 206 void Signal::save(list<DataFile::Statement> &st) const
 207 {
 208         st.push_back((DataFile::Statement("position"), position.x, position.y, position.z));
 209         st.push_back((DataFile::Statement("rotation"), rotation.radians()));
 210         if(address)
 211                 st.push_back((DataFile::Statement("address"), address));
 212 }
 213
 214
 215 Signal::Loader::Loader(Signal &s):
 216         DataFile::ObjectLoader<Signal>(s)
 217 {
 218         add("address",  &Loader::address);
 219         add("position", &Loader::position);
 220         add("rotation", &Loader::rotation);
 221 }
 222
 223 void Signal::Loader::address(unsigned a)
 224 {
 225         obj.set_address(a);
 226 }
 227
 228 void Signal::Loader::position(float x, float y, float z)
 229 {
 230         obj.set_position(Vector(x, y, z));
 231 }
 232
 233 void Signal::Loader::rotation(float d)
 234 {
 235         obj.set_rotation(Angle::from_radians(d));
 236 }
 237
 238 } // namespace R2C2