//Returns true if not waiting for red light and not in front of another vehicle (or if this vehicle has movement priority over other vehicle)
private bool PathIsClear()
{
isInFrontOfRedLight = TrafficLightIsRed();
if (trafficLightBarrier != null && !isInFrontOfRedLight)
{
//No longer waiting for red light
trafficLightBarrier = null;
}
//Other vehicle disappeared
if (otherVehicle = null)
{
isBehindOtherVehicle = false;
}
if (isInFrontOfOpenBridge)
{
if (waitingForBridge.state == DeckState.Closed)
{
isInFrontOfOpenBridge = false;
}
}
return(!isInFrontOfRedLight && !isInFrontOfOpenBridge && (!isBehindOtherVehicle || hasPriority));
}
// Start is called before the first frame update
void Start()
{
//Finds the barrier which is a child of this trafficlight object
barrier = GetComponentInChildren <Trafficlight_Barrier>();
timeTillChange = Random.Range(4f, 18f);
}
// Start is called before the first frame update
void Start()
{
barrier = GetComponentInChildren <Trafficlight_Barrier>();
if (barrier == null)
{
Debug.LogError("ERROR: No trafficlight_barrier found in warninglight object");
}
timeTillChange = Random.Range(4f, 18f); //Only used when not listening to controller
}
//Fires when colliding with another collider
private void OnTriggerEnter(Collider other)
{
//Calculate the dotproduct between transform and target transform. (used for finding out how the target unit is facing us)
float dotForward = Vector3.Dot(other.transform.forward, transform.forward);
//Traffic light in-sight
if (other.transform.tag == "Trafficlight_Barrier")
{
//If train and barrier is facing the other way, ignore it...
if (VehicleType == TrafficType.Train && dotForward > -0.8f)
{
return;
}
//Barrier is facing this unit the opposite way & unit is crossing bridge or track, ignore opposing barrier..
else if (isCrossingBridgeOrTrack && dotForward > 0.8f)
{
return;
}
//Pedestrian or Cyclist has just crossed the road and is facing a red light barrier on the opposite side. Ignore it..
else if ((VehicleType == TrafficType.Bicycle || VehicleType == TrafficType.Pedestrian) && other.GetComponentInParent <Trafficlight>() != null && dotForward > 0.8f)
{
return;
}
//Barrier is facing this unit at an angle. The barrier is probably not meant for this unit, ignore it..
else if (dotForward > -0.8f && dotForward < 0.8f)
{
return;
}
Trafficlight_Barrier barrier = other.GetComponent <Trafficlight_Barrier>();
if (barrier.IsActive) //(trafficlight_barrier is only active when trafficlight is red)
{
isInFrontOfRedLight = true;
trafficLightBarrier = barrier;
}
}
//Stop when bridge is closed
if (other.transform.tag == "Bridge" && VehicleType != TrafficType.Boat)
{
Bridge bridge = other.GetComponent <Bridge>();
isCrossingBridgeOrTrack = true;
if (bridge.state == DeckState.Open)
{
isInFrontOfOpenBridge = true;
waitingForBridge = bridge;
}
}
if (other.transform.tag == "Track" && VehicleType != TrafficType.Train)
{
isCrossingBridgeOrTrack = true;
}
//In front of other (waiting) vehicle
if (CollidesWithTags.Contains(other.transform.tag))
{
//Other unit is facing this unit almost head on. Move through target unit.
//(Implementing rerouting for cyclists/pedestrians when facing target unit is too complicated)
if (VehicleType == TrafficType.Bicycle || VehicleType == TrafficType.Pedestrian)
{
if (dotForward < -0.6f)
{
return;
}
}
isBehindOtherVehicle = true;
otherVehicle = other.GetComponentInParent <WaypointMovementController>();
//If the other vehicle also collides with this vehicle, give this one priority to move first
if (otherVehicle.otherVehicle == this)
{
if (!otherVehicle.hasPriority)
{
hasPriority = true;
}
}
}
}
void Start()
{
barrier = gameObject.GetComponent <Trafficlight_Barrier>();
}
