/// <summary>
/// generate data packet from this vechile to the TargetVehicle.
/// </summary>
/// <param name="DestinationVehicle"></param>
public void GeneratePacket(VehicleUi DestinationVehicle)
{
Dispatcher.Invoke((Action) delegate
{
Packet packet = new Packet();
packet.Type = PacketType.Data;
PublicStatistics.GeneratedPacketsCount += 1;
packet.PID = PublicStatistics.GeneratedPacketsCount;
packet.PacketLength = PublicParamerters.DataPacketLength;
packet.TravelledRoadSegmentString += CurrentLane.MyRoadSegment.RID; // add the first rs.
packet.VehiclesString += VID; // start by current sender.
packet.SRID = CurrentLane.MyRoadSegment.RID;
// set source and distination:
packet.SourceVehicle = this;
packet.DestinationVehicle = DestinationVehicle;
packet.Direction = DestinationVehicle.CurrentLane.LaneDirection;
packet.CurrentRoadSegment = CurrentLane.MyRoadSegment; // the segment of the vechile.
packet.EuclideanDistance = Computations.Distance(InstanceLocation, DestinationVehicle.InstanceLocation); // the intial distance
packet.RoutingDistance = packet.EuclideanDistance;
packet.SVID = VID;
packet.DVID = DestinationVehicle.VID;
this.SetNotationSign(NotationsSign.HasPacket);
DestinationVehicle.SetNotationSign(NotationsSign.Destination);
DestinationVehicle.WaitingPacketsIDsList.Add(packet.PID); // flage
// start count the delay.
PacketQueue.Enqueue(packet); // add the packet to the queue.
PacketQueueTimer.Interval = TimeSpan.FromSeconds(PublicParamerters.PacketQueueTimerInterval); // retry after...
PacketQueueTimer.Start(); // start the timer.
});
}
/// <summary>
/// select the next vechile. Intra_Routing.
/// </summary>
/// <param name="candidateVe"></param>
/// <param name="rs"></param>
/// <returns></returns>
public VehicleUi MatchVehicle(List <VehicleUi> candidateVe, RoadSegment rs, Packet packet)
{
IntraRouting rou = new IntraRouting(rs);
CandidateVehicle can = rou.GetCandidateVehicleUis(this, candidateVe, packet.DestinationVehicle, packet.IsRouted);
if (can != null)
{
VehicleUi next = can.SelectedVehicle;
if (packet.HopsVehicles > 3)
{
int lastMinuse1 = Convert.ToInt16(packet.VehiclesString.Split('-')[packet.HopsVehicles - 1]);
if (next.VID != lastMinuse1)
{
packet.CommunicationOverhead += (candidateVe.Count - 1); // / (CurrentLane.MyRoadSegment.LanesCount / 2); // divided tha lane in the same direction.
return(next);
}
else
{
// looop: no thing.
}
}
else
{
return(next);
}
}
return(null);
}
/// <summary>
/// forward the packet to the NEXT
/// </summary>
/// <param name="packet"></param>
/// <param name="next"></param>
public void RelayPacket(Packet packet, VehicleUi next)
{
Dispatcher.Invoke((Action) delegate
{
packet.PathWaitingTimes += packet.HopWaitingTimes; // save the path waiting time and clear the hop.
packet.HopWaitingTimes = 0; // re-intilize the hop-waiting.
packet.PropagationAndTransmissionDelay += DelayModel.Delay(this, next);
packet.HopsVehicles += 1;
packet.RoutingDistance += Computations.Distance(InstanceLocation, next.InstanceLocation);
packet.VehiclesString += "-" + next.VID;
next.RecievePacket(packet);
PacketQueueTimer.Interval = TimeSpan.FromSeconds(PublicParamerters.PacketQueueTimerInterval); // retry after...
next.SetNotationSign(NotationsSign.HasPacket);
SetNotationSign(NotationsSign.HasNoPacket);
});
}
/// <summary>
/// select the the DestinationVehicle randomly.
/// </summary>
public void RandomDestinationVehicle()
{
Dispatcher.Invoke((Action) delegate
{
int max = CurrentLane._MainWindow.MyVehicles.Count;
if (max >= 2)
{
int rand = Convert.ToInt16(RandomeNumberGenerator.GetUniform(max - 1));
if (rand != VID)
{
VehicleUi DestinationVehicle = CurrentLane._MainWindow.MyVehicles[rand];
GeneratePacket(DestinationVehicle);
}
}
});
}
double AllowToChangeLaneDistance = 25; // when the distance to the junction is x, then its not allowed to change the lane.
/// <summary>
/// move the vechile.
/// </summary>
public void StartMove()
{
Dispatcher.Invoke((Action) delegate
{
VehicleUi infrontVehicle = CurrentLane.LaneVehicleAndQueue.GetMyFrontVehicle(this); // get in the front.
showInfo(PublicParamerters.DisplayInfoFlag); // show flage. // info which should be disply.
double headingDistance = RemianDistanceToHeadingJunction;
// to north:
if (VehicleDirection == Direction.N)
{
if (headingDistance > 0)
{
double marTop = this.Margin.Top;
marTop -= 1;
//Margin = new Thickness(Margin.Left, marTop, 0, 0);
Dispatcher.Invoke(new Action(() => Margin = new Thickness(Margin.Left, marTop, 0, 0)), DispatcherPriority.Send);
// start decrease the speed according to the heading distance toward the jucntion.
if (headingDistance <= SlowDownDistance)
{
double instanceSpeed = Computations.GetTimeIntervalInSecond(headingDistance); // slow the speed.
InstantaneousSpeed = instanceSpeed;
}
// if has vechile in front: the behind vehicle should change the speed to or change the lane if possible.
if (infrontVehicle != null)
{
//: if still allowed to change the lane then go ahead. if not then the behind vechile should lower its speed.
if (headingDistance > AllowToChangeLaneDistance)
{
ChangeLaneRandomly();
}
else
{
// not allowd to change the lane.
// double fronVspeed = 5;
InstantaneousSpeed = infrontVehicle.InstantaneousSpeed * SpeedDisPercentage;
}
}
// change the lane randomnlly when v is in the middlel of the segment.
if (marTop < CurrentLane.MyRoadSegment.Midpoint)
{
double half = CurrentLane.MyRoadSegment.Height / 2;
if (headingDistance > half)
{
if (!ChangeLaneFlage)
{
ChangeLaneRandomly();
ChangeLaneFlage = true;
}
}
}
if (headingDistance < LineUpInJunctionDistance)
{
CurrentLane.LaneVehicleAndQueue.Enqueue(this); // add to the queue.
}
}
}
else if (VehicleDirection == Direction.S)
{
if (headingDistance > 0)
{
double marTop = this.Margin.Top;
marTop += 1;
// Margin = new Thickness(Margin.Left, marTop, 0, 0);
Dispatcher.Invoke(new Action(() => Margin = new Thickness(Margin.Left, marTop, 0, 0)), DispatcherPriority.Send);
if (headingDistance <= SlowDownDistance)
{
double instanceSpeed = Computations.GetTimeIntervalInSecond(headingDistance); // slow the speed.
InstantaneousSpeed = instanceSpeed;
}
if (infrontVehicle != null)
{
//: if still allowed to change the lane then go ahead. if not then the behind vechile should lower its speed.
if (headingDistance > AllowToChangeLaneDistance)
{
ChangeLaneRandomly();
}
else
{
InstantaneousSpeed = infrontVehicle.InstantaneousSpeed * SpeedDisPercentage;
}
}
if (marTop > CurrentLane.MyRoadSegment.Midpoint)
{
double half = CurrentLane.MyRoadSegment.Height / 2;
if (headingDistance > half)
{
if (!ChangeLaneFlage)
{
ChangeLaneRandomly();
ChangeLaneFlage = true;
}
}
}
if (headingDistance < LineUpInJunctionDistance)
{
CurrentLane.LaneVehicleAndQueue.Enqueue(this); // add to the queue.
}
}
}
else if (VehicleDirection == Direction.E)
{
if (headingDistance > 0)
{
double marLeft = Margin.Left;
double marTop = Margin.Top;
marLeft += 1;
// Margin = new Thickness(marLeft, marTop, 0, 0);
Dispatcher.Invoke(new Action(() => Margin = new Thickness(marLeft, marTop, 0, 0)), DispatcherPriority.Send);
if (headingDistance <= SlowDownDistance)
{
double instanceSpeed = Computations.GetTimeIntervalInSecond(headingDistance); // slow the speed.
InstantaneousSpeed = instanceSpeed;
}
if (infrontVehicle != null)
{
//: if still allowed to change the lane then go ahead. if not then the behind vechile should lower its speed.
if (headingDistance > AllowToChangeLaneDistance)
{
ChangeLaneRandomly();
}
else
{
InstantaneousSpeed = infrontVehicle.InstantaneousSpeed * SpeedDisPercentage;
}
}
if (marLeft > CurrentLane.MyRoadSegment.Midpoint)
{
double half = CurrentLane.MyRoadSegment.Width / 2;
if (headingDistance > half)
{
if (!ChangeLaneFlage)
{
ChangeLaneRandomly();
ChangeLaneFlage = true;
}
}
}
if (headingDistance < LineUpInJunctionDistance)
{
CurrentLane.LaneVehicleAndQueue.Enqueue(this); // add to the queue.
}
}
}
else if (VehicleDirection == Direction.W)
{
if (headingDistance > 0)
{
double marLeft = Margin.Left;
double marTop = Margin.Top;
marLeft -= 1;
// Margin = new Thickness(marLeft, marTop, 0, 0);
Dispatcher.Invoke(new Action(() => Margin = new Thickness(marLeft, marTop, 0, 0)), DispatcherPriority.Send);
if (headingDistance <= SlowDownDistance)
{
double instanceSpeed = Computations.GetTimeIntervalInSecond(headingDistance); // slow the speed.
InstantaneousSpeed = instanceSpeed;
}
if (infrontVehicle != null)
{
//: if still allowed to change the lane then go ahead. if not then the behind vechile should lower its speed.
if (headingDistance > AllowToChangeLaneDistance)
{
ChangeLaneRandomly();
}
else
{
InstantaneousSpeed = infrontVehicle.InstantaneousSpeed * SpeedDisPercentage;
}
}
if (marLeft < CurrentLane.MyRoadSegment.Midpoint)
{
double half = CurrentLane.MyRoadSegment.Width / 2;
if (headingDistance > half)
{
if (!ChangeLaneFlage)
{
ChangeLaneRandomly();
ChangeLaneFlage = true;
}
}
}
if (headingDistance < LineUpInJunctionDistance)
{
CurrentLane.LaneVehicleAndQueue.Enqueue(this); // add to the queue.
}
}
}
});
}
/// <summary>
/// send the packet.
/// </summary>
/// <param name="packet"></param>
public void SendPacket(Packet packet)
{
Dispatcher.Invoke((Action) delegate
{
if (packet.Type == PacketType.Data)
{
// it is time to switch the packet from a segment to a new segment.
if (RemianDistanceToHeadingJunction <= PublicParamerters.RemianDistanceToHeadingJunctionThreshold)
{
//select the next junction.
RoadSegment selectedNextRoadSegment = MatchJunction(packet);
if (selectedNextRoadSegment != null)
{
// select the vechiles that going to the selected next road segment.
// select inter-neighbors.
CurrentLane.LaneVehicleAndQueue.GetInterNeighbors(this, packet.Direction, selectedNextRoadSegment); // get the inter_neighbors. should be computed before finding the
VehicleUi next = MatchVehicle(Inter_Neighbores, selectedNextRoadSegment, packet); // inter_neibors.
if (next != null)
{
packet.HopsJunctions += 1;
packet.TravelledRoadSegmentString += "-" + selectedNextRoadSegment.RID;
RelayPacket(packet, next);
}
else
{
packet.HopWaitingTimes += 1; // count the hop waiting.
if (packet.HopWaitingTimes <= Settings.Default.MaximumAttemps)
{
StoreThePacket(packet);
}
else
{
// drop the packet:
DropPacket(packet);
}
}
}
}
else
{
CurrentLane.LaneVehicleAndQueue.GetIntraNeighborsTwoWays(this); // find the inter_neigbors.
VehicleUi next = MatchVehicle(Intra_Neighbores, CurrentLane.MyRoadSegment, packet); // intra_neighbors.
if (next != null)
{
RelayPacket(packet, next);
}
else
{
packet.HopWaitingTimes += 1; // count the hop waiting.
if (packet.HopWaitingTimes <= Settings.Default.MaximumAttemps)
{
StoreThePacket(packet);
}
else
{
// drop the packet:
DropPacket(packet);
}
}
}
}
else
{
// packet is not data.
}
});
}
