]> git.tdb.fi Git - r2c2.git/blobdiff - source/libr2c2/train.cpp
Basic support for beam gate sensors
[r2c2.git] / source / libr2c2 / train.cpp
index d1fb4ed8a81b9608bb82827ccbf5071a3b395251..aa2ba3f528627beb093dc936446b1f2b3bbd4d81 100644 (file)
@@ -36,7 +36,6 @@ Train::Train(Layout &l, const VehicleType &t, unsigned a, const string &p):
        allocator(*this),
        advancing(false),
        controller(new SimpleController),
-       active(false),
        current_speed_step(0),
        speed_changing(false),
        reverse(false),
@@ -54,6 +53,7 @@ Train::Train(Layout &l, const VehicleType &t, unsigned a, const string &p):
                speed_quantizer = new SpeedQuantizer(speed_steps);
 
        vehicles.push_back(new Vehicle(layout, loco_type));
+       vehicles.back()->set_train(this);
 
        layout.add_train(*this);
 
@@ -88,6 +88,8 @@ void Train::add_vehicle(const VehicleType &vt)
        Vehicle *veh = new Vehicle(layout, vt);
        vehicles.back()->attach_back(*veh);
        vehicles.push_back(veh);
+       veh->set_train(this);
+       signal_vehicle_added.emit(vehicles.size()-1, *veh);
 }
 
 void Train::remove_vehicle(unsigned i)
@@ -96,10 +98,17 @@ void Train::remove_vehicle(unsigned i)
                throw out_of_range("Train::remove_vehicle");
        if(i==0)
                throw logic_error("can't remove locomotive");
-       delete vehicles[i];
+
+       Vehicle *veh = vehicles[i];
        vehicles.erase(vehicles.begin()+i);
+       veh->detach_front();
        if(i<vehicles.size())
+       {
+               veh->detach_back();
                vehicles[i-1]->attach_back(*vehicles[i]);
+       }
+       signal_vehicle_removed.emit(i, *veh);
+       delete veh;
 }
 
 unsigned Train::get_n_vehicles() const
@@ -126,23 +135,6 @@ void Train::set_control(const string &n, float v)
        controller->set_control(n, v);
 }
 
-void Train::set_active(bool a)
-{
-       if(a==active)
-               return;
-       if(!a && controller->get_speed())
-               throw logic_error("moving");
-
-       active = a;
-       if(active)
-       {
-               stop_timeout = Time::TimeStamp();
-               allocator.reserve_more();
-       }
-       else
-               stop_timeout = Time::now()+2*Time::sec;
-}
-
 void Train::set_function(unsigned func, bool state)
 {
        if(!loco_type.get_functions().count(func))
@@ -199,10 +191,8 @@ void Train::place(const BlockIter &block)
        if(controller->get_speed())
                throw logic_error("moving");
 
-       set_active(false);
-       accurate_position = false;
-
        allocator.start_from(block);
+       accurate_position = false;
 
        if(reverse)
                vehicles.front()->place(block.reverse().track_iter(), 0, Vehicle::FRONT_BUFFER);
@@ -216,8 +206,6 @@ void Train::unplace()
                throw logic_error("moving");
 
        allocator.clear();
-
-       set_active(false);
        accurate_position = false;
 
        for(vector<Vehicle *>::iterator i=vehicles.begin(); i!=vehicles.end(); ++i)
@@ -227,48 +215,48 @@ void Train::unplace()
 void Train::stop_at(Block *block)
 {
        allocator.stop_at(block);
-       if(active && !block)
-               allocator.reserve_more();
 }
 
-bool Train::free_block(Block &block)
+bool Train::is_block_critical(const Block &block) const
 {
-       if(get_reserved_distance_until(&block)<controller->get_braking_distance()*1.3)
-               return false;
-
-       return allocator.release_from(block);
+       return get_reserved_distance_until(&block)<controller->get_braking_distance()*1.3;
 }
 
-void Train::free_noncritical_blocks()
+BlockIter Train::get_first_noncritical_block() const
 {
        if(allocator.empty())
-               return;
+               return BlockIter();
+
+       BlockIter i = allocator.last_current().next();
 
        if(controller->get_speed()==0)
-       {
-               allocator.release_noncurrent();
-               return;
-       }
+               return i;
 
        float margin = 10*layout.get_catalogue().get_scale();
        float min_dist = controller->get_braking_distance()*1.3+margin;
 
-       BlockIter i = allocator.last_current().next();
        float dist = 0;
        bool sensor_seen = false;
        for(; i->get_train()==this; i=i.next())
        {
                if(dist>min_dist && sensor_seen)
-               {
-                       allocator.release_from(*i);
-                       return;
-               }
+                       return i;
 
                dist += i->get_path_length(i.entry());
 
                if(i->get_sensor_id())
                        sensor_seen = true;
        }
+
+       return i;
+}
+
+void Train::refresh_blocks_from(Block &block)
+{
+       if(is_block_critical(block))
+               allocator.rewind_to(*get_first_noncritical_block());
+       else
+               allocator.rewind_to(block);
 }
 
 float Train::get_reserved_distance() const
@@ -284,23 +272,30 @@ float Train::get_reserved_distance() const
        return max(get_reserved_distance_until(0)-margin, 0.0f);
 }
 
-void Train::reserve_more()
-{
-       allocator.reserve_more();
-}
-
-void Train::tick(const Time::TimeStamp &t, const Time::TimeDelta &dt)
+void Train::tick(const Time::TimeDelta &dt)
 {
-       if(!active && stop_timeout && t>=stop_timeout)
+       if(stop_timeout)
        {
-               allocator.release_noncurrent();
-               stop_timeout = Time::TimeStamp();
+               stop_timeout -= dt;
+               if(stop_timeout<=Time::zero)
+               {
+                       allocator.set_active(false);
+                       stop_timeout = Time::TimeDelta();
+               }
        }
 
+       travel_time += dt;
+
        Driver &driver = layout.get_driver();
 
+       bool intent_to_move = false;
        for(list<TrainAI *>::iterator i=ais.begin(); i!=ais.end(); ++i)
-               (*i)->tick(t, dt);
+       {
+               (*i)->tick(dt);
+               if((*i)->has_intent_to_move())
+                       intent_to_move = true;
+       }
+
        controller->tick(dt);
        float speed = controller->get_speed();
        bool moving = speed>0;
@@ -314,8 +309,6 @@ void Train::tick(const Time::TimeStamp &t, const Time::TimeDelta &dt)
                driver.set_loco_reverse(address, r);
 
                allocator.reverse();
-               if(active)
-                       allocator.reserve_more();
        }
 
        if(speed_quantizer)
@@ -334,8 +327,8 @@ void Train::tick(const Time::TimeStamp &t, const Time::TimeDelta &dt)
 
        if(moving)
        {
-               if(!active)
-                       set_active(true);
+               if(!allocator.is_active())
+                       allocator.set_active(true);
 
                Vehicle &vehicle = *(reverse ? vehicles.back() : vehicles.front());
 
@@ -355,6 +348,10 @@ void Train::tick(const Time::TimeStamp &t, const Time::TimeDelta &dt)
                        }
                }
        }
+       else if(intent_to_move && !allocator.is_active())
+               allocator.set_active(true);
+       else if(allocator.is_active() && !intent_to_move && !stop_timeout)
+               stop_timeout = 2*Time::sec;
 }
 
 void Train::save(list<DataFile::Statement> &st) const
@@ -425,13 +422,14 @@ void Train::loco_func_event(unsigned addr, unsigned func, bool state)
 
 void Train::sensor_state_changed(Sensor &sensor, Sensor::State state)
 {
-       Block *block = 0;
-       if(TrackCircuit *tc = dynamic_cast<TrackCircuit *>(&sensor))
-               block = &tc->get_block();
-       else
+       if(state!=Sensor::MAYBE_ACTIVE)
                return;
 
-       if(block->get_train()==this && state==Sensor::MAYBE_ACTIVE)
+       Block *block = sensor.get_block();
+       if(!block || block->get_train()!=this)
+               return;
+
+       if(dynamic_cast<TrackCircuit *>(&sensor))
        {
                if(last_entry_block)
                {
@@ -449,7 +447,7 @@ void Train::sensor_state_changed(Sensor &sensor, Sensor::State state)
 
                        if(travel_distance>0)
                        {
-                               float travel_time_secs = (Time::now()-last_entry_time)/Time::sec;
+                               float travel_time_secs = travel_time/Time::sec;
 
                                if(travel_time_secs>=2)
                                        speed_quantizer->learn(current_speed_step, travel_distance/travel_time_secs, travel_time_secs);
@@ -457,7 +455,7 @@ void Train::sensor_state_changed(Sensor &sensor, Sensor::State state)
                }
 
                last_entry_block = allocator.iter_for(*block);
-               last_entry_time = Time::now();
+               travel_time = Time::zero;
                pure_speed = true;
                accurate_position = true;
                overshoot_dist = 0;
@@ -493,8 +491,7 @@ float Train::get_reserved_distance_until(const Block *until_block) const
        if(!track)  // XXX Probably unnecessary
                return 0;
 
-       BlockIter block = track.block_iter();
-       if(&*block==until_block)
+       if(&track->get_block()==until_block)
                return 0;
 
        // Account for the vehicle's offset on its current track
@@ -505,6 +502,8 @@ float Train::get_reserved_distance_until(const Block *until_block) const
                result = track->get_type().get_path_length(track->get_active_path())-result;
        result -= veh.get_type().get_length()/2;
 
+       BlockIter block = track.block_iter();
+
        // Count remaining distance in the vehicle's current block
        for(track=track.next(); &track->get_block()==&*block; track=track.next())
                result += track->get_type().get_path_length(track->get_active_path());
@@ -576,6 +575,7 @@ void Train::Loader::vehicle(ArticleNumber art_nr)
        Vehicle *veh = new Vehicle(obj.layout, vtype);
        obj.vehicles.back()->attach_back(*veh);
        obj.vehicles.push_back(veh);
+       veh->set_train(&obj);
 }
 
 } // namespace R2C2