Added missing methods to XMLController

src/de/tud/kom/p2psim/impl/topology/movement/vehicular/sumo/simulation/controller/xml/XMLSimulationController.java

@@ -210,4 +210,9 @@ public class XMLSimulationController implements VehicleController, SimulationSet
 		return _vehicleDataInformationHandler.getVehiclePositions().get(pVehicleID).getSpeed();
 	}
 
+	@Override
+	public double getVehicleHeading(String pVehicleID) {
+		return _vehicleDataInformationHandler.getVehiclePositions().get(pVehicleID).getHeading();
+	}
+
 }