private void UpdateSituation(TrafficSegmentConfiguration configuration)
{
_configuration = configuration;
ResetToNormal();
MaxSpeed = configuration.MaxSpeed;
MinSpeed = configuration.MinSpeed;
AverageCarsPerMinute = configuration.AverageCarsPerMinute;
SpeedingPercentage = configuration.SpeedingPercentage;
SpeedLimit = configuration.SpeedLimit;
RushHours = configuration.RushHours;
_currentEvent = EventType.None;
_currentTrend = TrafficTrend.None;
}
public void Resimulate(Random random)
{
// Check rush hour (busy or finished)
if (IsRushHour(SimulatedClock.Time, out var currentRushHour))
{
AverageCarsPerMinute += random.Next(0, 10);
try
{
var rushHourEvolution = (currentRushHour.TimeLeft(SimulatedClock.Time).TotalSeconds /
currentRushHour.Duration.TotalSeconds);
_currentTrend = rushHourEvolution < 0.80 ? TrafficTrend.Congesting : TrafficTrend.Clearing;
}
catch (DivideByZeroException)
{
_currentTrend = TrafficTrend.Clearing;
}
// First 80% of the timeframe, rushhour congestion, then clearing
_currentEvent = EventType.RushHour;
}
else
{
if (_currentEvent == EventType.RushHour)
{
// Rushhour done , so reset to normal!
ResetToNormal();
}
}
if (_currentEvent == EventType.None)
{
// Apply random small changes
AverageCarsPerMinute += random.Next(-2, 3);
SpeedingPercentage = _configuration.SpeedingPercentage + random.Next(-1, 2);
MinSpeed = _configuration.MinSpeed + random.Next(-5, 6);
MaxSpeed = _configuration.MaxSpeed + random.Next(-3, 4);
AverageSpeed = _configuration.SpeedLimit - random.Next(2, 10);
// Allow to cause an accident
if (random.Next(0, 2000) == 0)
{
_currentEvent = EventType.Accident;
_currentEventStartTime = SimulatedClock.Time;
_eventLength = TimeSpan.FromMinutes(random.Next(15, 75));
}
}
// Apply accident logic
if (_currentEvent == EventType.Accident)
{
if (_currentEventStartTime.Add(_eventLength) <= SimulatedClock.Time)
{
_currentEvent = EventType.None;
ResetToNormal();
}
// Apply random small changes
AverageCarsPerMinute += random.Next(-2, 3);
try
{
var accidentEvolution = ((SimulatedClock.Time - _currentEventStartTime).TotalSeconds / _eventLength.TotalSeconds);
_currentTrend = accidentEvolution < 0.88 ? TrafficTrend.Congesting : TrafficTrend.Clearing;
}
catch (DivideByZeroException)
{
_currentTrend = TrafficTrend.Clearing;
}
_currentEvent = EventType.RushHour;
}
switch (_currentTrend)
{
case TrafficTrend.Clearing:
AverageSpeed += random.Next(2, 10);
break;
case TrafficTrend.Congesting:
AverageSpeed -= random.Next(2, 10);
break;
}
GuardValues();
}
