#include <cmath>
#include "catalogue.h"
+#include "driver.h"
#include "layout.h"
#include "track.h"
+#include "trackiter.h"
#include "tracktype.h"
#include "vehicle.h"
#include "vehicletype.h"
next(0),
prev(0),
direction(0),
- bogie_dirs(type.get_bogies().size())
+ bogie_dirs(type.get_bogies().size()),
+ front_sensor(0),
+ back_sensor(0)
{
layout.add_vehicle(*this);
}
Vehicle::~Vehicle()
{
+ if(next)
+ detach_back();
+ if(prev)
+ detach_front();
layout.remove_vehicle(*this);
}
next = &veh;
veh.prev = this;
+
+ if(track_pos.track)
+ propagate_backward();
}
void Vehicle::attach_front(Vehicle &veh)
if(prev || veh.next)
throw InvalidState("Already attached");
- next = &veh;
- veh.prev = this;
+ prev = &veh;
+ veh.next = this;
+
+ if(prev->get_track())
+ prev->propagate_backward();
}
void Vehicle::detach_back()
prev = 0;
}
-void Vehicle::place(Track *t, unsigned e, float o, PlaceMode m)
+void Vehicle::place(Track &t, unsigned e, float o, PlaceMode m)
{
- track_pos = TrackPosition(t, e, o);
+ track_pos = TrackPosition(&t, e, o);
if(m==FRONT_AXLE)
- {
- float front = type.get_length()/2;
- if(!type.get_axles().empty())
- front = type.get_axles().front().position;
- if(!type.get_bogies().empty())
- {
- const VehicleType::Bogie &bogie = type.get_bogies().front();
- front = max(front, bogie.position+bogie.axles.front().position);
- }
- track_pos.advance(-front);
- }
+ 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)
- {
- float back = type.get_length()/2;
- if(!type.get_axles().empty())
- back = type.get_axles().back().position;
- if(!type.get_bogies().empty())
- {
- const VehicleType::Bogie &bogie = type.get_bogies().back();
- back = min(back, bogie.position+bogie.axles.back().position);
- }
- track_pos.advance(-back);
- }
+ track_pos.advance(-type.get_back_axle_offset());
else if(m==BACK_BUFFER)
track_pos.advance(type.get_length()/2);
propagate_position();
}
+void Vehicle::unplace()
+{
+ if(!track_pos.track)
+ return;
+
+ track_pos = TrackPosition();
+
+ if(prev)
+ prev->unplace();
+ if(next)
+ next->unplace();
+}
+
void Vehicle::advance(float d)
{
track_pos.advance(d);
TrackPoint tp;
const vector<VehicleType::Axle> &axles = type.get_axles();
+ const vector<VehicleType::Bogie> &bogies = type.get_bogies();
if(axles.size()>=2)
{
float wheelbase = axles.front().position-axles.back().position;
tp = get_point(track_pos, wheelbase, -axles.back().position/wheelbase);
}
- else
+ else if(bogies.size()>=2)
{
- const vector<VehicleType::Bogie> &bogies = type.get_bogies();
- if(bogies.size()>=2)
- {
- TrackPosition front = track_pos;
- front.advance(bogies.front().position);
- TrackPosition back = track_pos;
- back.advance(bogies.back().position);
- float bogie_spacing = bogies.front().position-bogies.back().position;
- adjust_for_distance(front, back, bogie_spacing);
+ TrackPosition front = track_pos;
+ front.advance(bogies.front().position);
+ TrackPosition back = track_pos;
+ back.advance(bogies.back().position);
+ float bogie_spacing = bogies.front().position-bogies.back().position;
+ adjust_for_distance(front, back, bogie_spacing);
- const vector<VehicleType::Axle> &front_axles = bogies.front().axles;
- float wheelbase = front_axles.front().position-front_axles.back().position;
- TrackPoint front_point = get_point(front, wheelbase, -front_axles.back().position/wheelbase);
+ const vector<VehicleType::Axle> &front_axles = bogies.front().axles;
+ float wheelbase = front_axles.front().position-front_axles.back().position;
+ TrackPoint front_point = get_point(front, wheelbase, -front_axles.back().position/wheelbase);
- const vector<VehicleType::Axle> &back_axles = bogies.back().axles;
- wheelbase = back_axles.front().position-back_axles.back().position;
- TrackPoint back_point = get_point(back, wheelbase, -back_axles.back().position/wheelbase);
+ const vector<VehicleType::Axle> &back_axles = bogies.back().axles;
+ wheelbase = back_axles.front().position-back_axles.back().position;
+ TrackPoint back_point = get_point(back, wheelbase, -back_axles.back().position/wheelbase);
- tp = get_point(front_point.pos, back_point.pos, -bogies.back().position/bogie_spacing);
+ tp = get_point(front_point.pos, back_point.pos, -bogies.back().position/bogie_spacing);
- bogie_dirs.front() = front_point.dir-tp.dir;
- bogie_dirs.back() = back_point.dir-tp.dir;
- }
- else
- tp = track_pos.get_point();
+ bogie_dirs.front() = front_point.dir-tp.dir;
+ bogie_dirs.back() = back_point.dir-tp.dir;
}
+ else
+ tp = track_pos.get_point();
+
+ if(!prev)
+ check_sensor(type.get_front_axle_offset(), front_sensor);
+ if(!next)
+ check_sensor(type.get_back_axle_offset(), back_sensor);
position = tp.pos;
+ position.z += layout.get_catalogue().get_rail_elevation();
direction = tp.dir;
}
next->propagate_backward();
}
+void Vehicle::check_sensor(float offset, unsigned &sensor)
+{
+ TrackPosition pos = track_pos;
+ pos.advance(offset);
+ unsigned s = pos.track->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. */
+ layout.get_driver().set_sensor(old, false);
+ }
+}
+
void Vehicle::adjust_for_distance(TrackPosition &front, TrackPosition &back, float tdist, float ratio) const
{
float margin = 0.01*layout.get_catalogue().get_scale();
if(!track)
return;
- unsigned path = track->get_active_path();
-
offs += d;
- float path_len = track->get_type().get_path_length(path);
- while(track && offs>=path_len)
+ TrackIter iter(track, ep);
+ while(iter)
{
- unsigned out = track->traverse(ep, path);
- Track *next = track->get_link(out);
+ float path_len = iter->get_type().get_path_length(iter->get_active_path());
- if(next)
+ if(offs>path_len)
{
- ep = next->get_endpoint_by_link(*track);
- track = next;
-
offs -= path_len;
- path = track->get_active_path();
- path_len = track->get_type().get_path_length(path);
+ iter = iter.next();
}
else
- track = 0;
+ break;
}
- while(track && offs<0)
+ while(iter && offs<0)
{
- Track *prev = track->get_link(ep);
- if(prev)
- {
- unsigned in = prev->get_endpoint_by_link(*track);
- track = prev;
+ iter = iter.flip().reverse();
- path = track->get_active_path();
- ep = track->traverse(in, path);
-
- path_len = track->get_type().get_path_length(path);
+ if(iter)
+ {
+ float path_len = iter->get_type().get_path_length(iter->get_active_path());
offs += path_len;
}
- else
- track = 0;
}
+ track = iter.track();
+ ep = iter.entry();
if(!track)
- {
- ep = 0;
offs = 0;
- }
}
TrackPoint Vehicle::TrackPosition::get_point() const
projects / r2c2.git / blobdiff