Enables rendering of the current state of traffic lights (red/green)

Author: dimatcimbal

src/Intersection.cpp

@@ -143,12 +143,5 @@ void Intersection::processVehicleQueue()
 bool Intersection::trafficLightIsGreen()
 {
    // please include this part once you have solved the final project tasks
-   /*
-   if (_trafficLight.getCurrentPhase() == TrafficLightPhase::green)
-       return true;
-   else
-       return false;
-   */
-
-  return true; // makes traffic light permanently green
+   return _trafficLight.getCurrentPhase() == TrafficLightPhase::green;
 } 

src/TrafficLight.cpp

@@ -65,7 +65,6 @@ void TrafficLight::simulate()
 }
 
 void TrafficLight::toggleCurrentPhase() {
-    std::lock_guard<std::mutex> lock(_currentPhase_mtx); // write is synchronized
     _currentPhase = _currentPhase == TrafficLightPhase::red ? TrafficLightPhase::green : TrafficLightPhase::red;
     _messages.send(std::move(_currentPhase));
 }