X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibmarklin%2Fvehicle.cpp;h=ac03de16a4ce7ed46ff87e5b04bdc40e8d79f6aa;hb=3d38bcbe8add00b558012fa0cd4e0be26464dbeb;hp=d81848076c5984a26928873a49b13023785817d1;hpb=d01230572abde870055844b6efaa777a2ba93226;p=r2c2.git

diff --git a/source/libmarklin/vehicle.cpp b/source/libmarklin/vehicle.cpp
index d818480..ac03de1 100644
--- a/source/libmarklin/vehicle.cpp
+++ b/source/libmarklin/vehicle.cpp
@@ -48,6 +48,9 @@ void Vehicle::attach_back(Vehicle &veh)
 
 	next = &veh;
 	veh.prev = this;
+
+	if(track_pos.track)
+		propagate_backward();
 }
 
 void Vehicle::attach_front(Vehicle &veh)
@@ -55,8 +58,11 @@ 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()
@@ -207,6 +213,8 @@ void Vehicle::check_sensor(float offset, unsigned &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();
@@ -214,7 +222,6 @@ void Vehicle::check_sensor(float offset, unsigned &sensor)
 		if(s && s!=mid)
 			/* There's a sensor and it's different from mid.  We've just entered
 			that sensor. */
-			// XXX The Train will reset the vehicles to the start of the sensor, which is somewhat undesirable
 			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