Vehicle::Vehicle(Layout &l, const VehicleType &t):
Object(l),
type(t),
+ train(0),
next(0),
prev(0),
+ placement(type),
front_sensor(0),
back_sensor(0)
{
- axles.assign(type.get_fixed_axles().begin(), type.get_fixed_axles().end());
+ axles.assign(type.get_axles().begin(), type.get_axles().end());
+ for(vector<Axle>::iterator i=axles.begin(); i!=axles.end(); ++i)
+ if(!i->type->bogie)
+ fixed_axles.push_back(&*i);
bogies.assign(type.get_bogies().begin(), type.get_bogies().end());
rods.assign(type.get_rods().begin(), type.get_rods().end());
+ for(vector<Bogie>::iterator i=bogies.begin(); i!=bogies.end(); ++i)
+ for(unsigned j=0; j<i->axles.size(); ++j)
+ i->axles[j] = &axles[i->type->first_axle+j];
layout.add(*this);
}
return veh;
}
+void Vehicle::set_train(Train *t)
+{
+ train = t;
+}
+
void Vehicle::attach_back(Vehicle &veh)
{
if(next || veh.prev)
next = &veh;
veh.prev = this;
- if(track_pos.track)
+ if(is_placed())
propagate_backward();
}
prev = &veh;
veh.next = this;
- if(prev->get_track())
+ if(prev->is_placed())
prev->propagate_backward();
}
prev = 0;
}
-void Vehicle::place(const TrackIter &t, float o, PlaceMode m)
+void Vehicle::place(const TrackOffsetIter &t, VehiclePlacement::Anchor a)
{
if(!t)
throw invalid_argument("Vehicle::place");
- track_pos = TrackPosition(t, o);
-
- if(m==FRONT_AXLE)
- track_pos.advance(-type.get_front_axle_offset());
- else if(m==FRONT_BUFFER)
- track_pos.advance(-type.get_length()/2);
- else if(m==BACK_AXLE)
- track_pos.advance(-type.get_back_axle_offset());
- else if(m==BACK_BUFFER)
- track_pos.advance(type.get_length()/2);
+ placement.place(t, a);
- update_position();
+ update_position(0);
propagate_position();
}
void Vehicle::unplace()
{
- if(!track_pos.track)
+ if(!placement.is_placed())
return;
- track_pos = TrackPosition();
+ placement.unplace();
if(prev)
prev->unplace();
void Vehicle::advance(float d)
{
- track_pos.advance(d);
- update_position();
+ placement.advance(d);
turn_axles(d);
+ update_position(d<0 ? -1 : 1);
propagate_position();
}
-const Vehicle::Axle &Vehicle::get_fixed_axle(unsigned i) const
+const Vehicle::Axle &Vehicle::get_axle(unsigned i) const
{
if(i>=axles.size())
- throw out_of_range("Vehicle::get_fixed_axle");
+ throw out_of_range("Vehicle::get_axle");
return axles[i];
}
+const Vehicle::Axle &Vehicle::get_fixed_axle(unsigned i) const
+{
+ if(i>=fixed_axles.size())
+ throw out_of_range("Vehicle::get_fixed_axle");
+ return *fixed_axles[i];
+}
+
const Vehicle::Bogie &Vehicle::get_bogie(unsigned i) const
{
if(i>=bogies.size())
throw out_of_range("Vehicle::get_bogie_axle");
if(j>=bogies[i].axles.size())
throw out_of_range("Vehicle::get_bogie_axle");
- return bogies[i].axles[j];
+ return *bogies[i].axles[j];
}
const Vehicle::Rod &Vehicle::get_rod(unsigned i) const
return rods[i];
}
-void Vehicle::update_position()
+void Vehicle::update_position(int sign)
{
- TrackPoint tp;
+ OrientedPoint p = placement.get_point();
+ position = p.position;
+ position.z += layout.get_catalogue().get_rail_elevation();
+ rotation = p.rotation;
+ tilt = p.tilt;
- if(axles.size()>=2)
- {
- float wheelbase = axles.front().type->position-axles.back().type->position;
- tp = get_point(track_pos, wheelbase, -axles.back().type->position/wheelbase);
- }
- else if(bogies.size()>=2)
+ if(bogies.size()>=2)
{
- TrackPosition front = track_pos;
- front.advance(bogies.front().type->position);
- TrackPosition back = track_pos;
- back.advance(bogies.back().type->position);
- float bogie_spacing = bogies.front().type->position-bogies.back().type->position;
- adjust_for_distance(front, back, bogie_spacing);
+ OrientedPoint front_point = placement.get_bogie_point(bogies.front().type->index);
+ bogies.front().direction = front_point.rotation-p.rotation;
- const vector<Axle> &front_axles = bogies.front().axles;
- float wheelbase = front_axles.front().type->position-front_axles.back().type->position;
- TrackPoint front_point = get_point(front, wheelbase, -front_axles.back().type->position/wheelbase);
-
- const vector<Axle> &back_axles = bogies.back().axles;
- wheelbase = back_axles.front().type->position-back_axles.back().type->position;
- TrackPoint back_point = get_point(back, wheelbase, -back_axles.back().type->position/wheelbase);
-
- tp = get_point(front_point.pos, back_point.pos, -bogies.back().type->position/bogie_spacing);
-
- bogies.front().direction = front_point.dir-tp.dir;
- bogies.back().direction = back_point.dir-tp.dir;
+ OrientedPoint back_point = placement.get_bogie_point(bogies.back().type->index);
+ bogies.back().direction = back_point.rotation-p.rotation;
}
- else
- tp = track_pos.get_point();
if(!prev)
- check_sensor(type.get_front_axle_offset(), front_sensor);
+ check_sensor(placement.get_position(VehiclePlacement::FRONT_AXLE), front_sensor, sign<0);
if(!next)
- check_sensor(type.get_back_axle_offset(), back_sensor);
+ check_sensor(placement.get_position(VehiclePlacement::BACK_AXLE), back_sensor, sign>0);
- position = tp.pos;
- position.z += layout.get_catalogue().get_rail_elevation();
- rotation = tp.dir;
+ signal_moved.emit();
}
void Vehicle::update_position_from(const Vehicle &veh)
float margin = layout.get_catalogue().get_scale();
float dist = distance(veh.position, position);
- if(!track_pos.track || dist<tdist-margin || dist>tdist+margin)
+ if(!is_placed() || dist<tdist-margin || dist>tdist+margin)
{
- track_pos = veh.track_pos;
- track_pos.advance(sign*tdist);
- update_position();
+ if(sign<0)
+ placement.place_after(veh.placement);
+ else
+ placement.place_before(veh.placement);
+ update_position(0);
dist = distance(veh.position, position);
}
- track_pos.advance(sign*(tdist-dist));
- update_position();
- turn_axles(sign*(tdist-dist));
+ float d = sign*(tdist-dist);
+ placement.advance(d);
+ update_position(d<0 ? -1 : 1);
+ turn_axles(d);
}
void Vehicle::propagate_position()
next->propagate_backward();
}
-void Vehicle::check_sensor(float offset, unsigned &sensor)
+void Vehicle::check_sensor(const TrackOffsetIter &t, unsigned &sensor, bool release)
{
- TrackPosition pos = track_pos;
- pos.advance(offset);
- unsigned s = pos.track->get_sensor_id();
+ unsigned s = t->get_sensor_id();
if(s!=sensor)
{
- /* Sensor ID under axle has changed. Deduce movement direction by using
- the sensor ID under the midpoint of the vehicle. */
- /* XXX This depends on the simulation running fast enough. Something
- more robust would be preferable. */
unsigned old = sensor;
sensor = s;
- unsigned mid = track_pos.track->get_sensor_id();
-
- if(s && s!=mid)
- /* There's a sensor and it's different from mid. We've just entered
- that sensor. */
- layout.get_driver().set_sensor(sensor, true);
- if(old && old!=mid)
- /* A sensor was under the axle and it was different from mid. We've
- just left that sensor. */
+ if(release)
layout.get_driver().set_sensor(old, false);
+ else
+ layout.get_driver().set_sensor(sensor, true);
}
}
{
for(vector<Axle>::iterator i=axles.begin(); i!=axles.end(); ++i)
i->angle += Angle::from_radians(d*2/i->type->wheel_dia);
- for(vector<Bogie>::iterator i=bogies.begin(); i!=bogies.end(); ++i)
- for(vector<Axle>::iterator j=i->axles.begin(); j!=i->axles.end(); ++j)
- j->angle += Angle::from_radians(d*2/j->type->wheel_dia);
update_rods();
}
}
}
-void Vehicle::adjust_for_distance(TrackPosition &front, TrackPosition &back, float tdist, float ratio) const
-{
- float margin = 0.01*layout.get_catalogue().get_scale();
- int adjust_dir = 0;
- while(1)
- {
- Vector front_point = front.get_point().pos;
- Vector back_point = back.get_point().pos;
-
- float dist = distance(front_point, back_point);
-
- float diff = tdist-dist;
- if(diff<-margin && adjust_dir<=0)
- {
- diff -= margin;
- adjust_dir = -1;
- }
- else if(diff>margin && adjust_dir>=0)
- {
- diff += margin;
- adjust_dir = 1;
- }
- else
- return;
-
- front.advance(diff*(1-ratio));
- back.advance(-diff*ratio);
- }
-}
-
-TrackPoint Vehicle::get_point(const Vector &front, const Vector &back, float ratio) const
-{
- Vector span = front-back;
-
- TrackPoint tp;
- tp.pos = back+span*ratio;
- tp.dir = Geometry::atan2(span.y, span.x);
-
- return tp;
-}
-
-TrackPoint Vehicle::get_point(const TrackPosition &pos, float tdist, float ratio) const
-{
- TrackPosition front = pos;
- front.advance(tdist*(1-ratio));
-
- TrackPosition back = pos;
- back.advance(-tdist*ratio);
-
- adjust_for_distance(front, back, tdist, ratio);
- return get_point(front.get_point().pos, back.get_point().pos, ratio);
-}
-
unsigned Vehicle::get_n_link_slots() const
{
return 2;
Vehicle::Bogie::Bogie(const VehicleType::Bogie &t):
- type(&t)
-{
- for(VehicleType::AxleArray::const_iterator i=type->axles.begin(); i!=type->axles.end(); ++i)
- axles.push_back(*i);
-}
+ type(&t),
+ axles(t.axles.size())
+{ }
Vehicle::Rod::Rod(const VehicleType::Rod &t):
type(&t)
{ }
-
-Vehicle::TrackPosition::TrackPosition():
- offs(0)
-{ }
-
-Vehicle::TrackPosition::TrackPosition(const TrackIter &t, float o):
- track(t),
- offs(o)
-{ }
-
-void Vehicle::TrackPosition::advance(float d)
-{
- if(!track)
- return;
-
- offs += d;
- while(track)
- {
- float path_len = track->get_type().get_path_length(track->get_active_path());
-
- if(offs>path_len)
- {
- offs -= path_len;
- track = track.next();
- }
- else
- break;
- }
-
- while(track && offs<0)
- {
- track = track.flip().reverse();
-
- if(track)
- {
- float path_len = track->get_type().get_path_length(track->get_active_path());
- offs += path_len;
- }
- }
-
- if(!track)
- offs = 0;
-}
-
-TrackPoint Vehicle::TrackPosition::get_point() const
-{
- if(track)
- return track->get_point(track.entry(), offs);
- else
- return TrackPoint();
-}
-
} // namespace R2C2