public double GetAcceleration(Car car, Car next, ITrack track)
{
var distance = track.Distance(car, next);
if (distance < ComfortDistance)
{
_targetVelocity = next.Velocity / 2;
}
if (distance > ComfortDistance * 5)
{
_targetVelocity = _comfortVelocity;
}
var a = (_targetVelocity - car.Velocity);
if (a > MaxAceleration) a = MaxAceleration;
if (a < -MaxAceleration) a = -MaxAceleration;
return a;
}
public static double Distance(this ITrack track, Car a, Car b)
{
if (a.Position < b.Position) return b.Position - a.Position;
return track.Length + b.Position - a.Position;
}
private void CarOnPositionUpdated(Car car)
{
RaisePropertyChanged("X");
RaisePropertyChanged("Y");
RaisePropertyChanged("Angle");
}
public void Drive(Car next, ITrack track)
{
double a = _driver.GetAcceleration(this, next, track);
_velocity += a;
}
public CarViewModel(Track track, Car car)
{
_track = track;
_car = car;
_car.PositionUpdated += CarOnPositionUpdated;
}