private void _timer_Tick(object sender, EventArgs e)
{
if (_trackingService != null)
{
// we simulate tracking events by selecting a RANDOM ship
// next tracking type is set to Arrival or Departure depending on the
// current location of the selected ship
// if port of selected ship == "AT SEA" then we set the tracking event type
// as an ARRIVAL and will set ship port to the next port (!= 0) in the Port list
// if port of selected ship != "AT SEA" then we set the tracking event type
// as a DEPARTURE and set port to "AT SEA"
int maxShip = _trackingService.Ships.Count;
// select a random ship in the list
_selectedShipId = _randomShip.Next(1, maxShip);
// set tracked ship to the current selected id
_trackingService.TrackedShip = _trackingService.Ships[_selectedShipId];
// set the tracking event type (Arrival or Departure) depening on the current location (PortId 0 is AT-SEA)
_trackingService.TrackingType = _trackingService.TrackedShip.Location.PortId == 0
? TrackingType.Arrival
: TrackingType.Departure;
// set the time of tracking recording
_trackingService.Recorded = DateTime.Now;
// create a unique id for the tracking
_trackingService.TrackingServiceId = Guid.NewGuid();
// set the new port of the tracking, this is a random port in
// the list in case of arrival
// or port 0 = AT SEA in case of departure
if (_trackingService.TrackingType == TrackingType.Arrival)
{
int maxPort = _trackingService.Ports.Count;
_selectedPortId = _randomPort.Next(1, maxPort);
}
else
{
_selectedPortId = 0;
}
_trackingService.SetPort = _trackingService.Ports[_selectedPortId];
// handle the tracking by the tracking service
// the tracking service will now send an Arrival event or Departure event to the Ship
_trackingService.RecordTracking(_eventProcessor);
// augment number of events
_numberOfEventsCount.Text = _eventProcessor.CountEventLogEntries().ToString();
// refresh the UI
this.SetDataSource();
}
}