public void UpdatePosition(TimeSpan timeDelta)
{
double time = timeDelta.TotalSeconds;
Position = Position.MovedByVector(VectorD.Polar(Speed * time, Heading));
Speed += Acceleration * time;
double turn = TurnSpeed * time;
Heading += turn;
TurretHeading += turn;
// Calculate turret heading:
double targetTurretHeading = VectorD.Cartesian(_target.X - Position.X, _target.Y - Position.Y).Heading;
double turretHeadingDelta = targetTurretHeading - TurretHeading;
double turretHeadingChange = Math.Sign(turretHeadingDelta) *
Math.Min(Math.Abs(turretHeadingDelta), TurretTurnSpeedConstant);
TurretHeading += turretHeadingChange;
}
