Vehicle control

[ansb5]

Hello @riebl.

I'm trying to control vehicles via VehicleController. I'm calling VehicleController.h functions in CaService to stop a car. When I use get function it works perfectly:

auto& vehicle = getFacilities().get_const<traci::VehicleController>() vehicle.getSpeed().value()

But when I try the same with set it doesn't work: vehicle.setSpeed(0) //Stop the vehicle

When I write the object vehicle. I get the get functions in the suggestions but not the set functions. And of course, when i simulate doesn't work. What can be the problem?

[riebl]

When you say "it doesn't work" you mean it does not even compile, right? VehicleController::setSpeed expects a Boost.Unit quantity, i.e. 0 is not sufficient. You need to pass 0.0 * boost::units::si::meter_per_second, for example.

[ansb5]

Thanks for your answer @riebl

Yes, I meant that it did not compile.

Now I tried these two things:

1. vehicle.setSpeed(0.0 * boost::units::si::meter_per_second);
2. static const vanetza::units::Velocity stop {0.0 * boost::units::si::meter_per_second}; vehicle.setSpeed(stop);

But I get the same error message:

[ansb5]

Sorry I didn't meant to close the issue

[riebl]

You cannot call non-const methods on objects via const references. VehicleController::setSpeed is a non-const method whereas getSpeed is a const method. You can retrieve a non-const reference to VehicleController by getFacilities().get_mutable<traci::VehicleController>().