/// <summary>
/// Calculates the overall steering force based on the currently active
/// steering behaviors.
/// </summary>
/// <returns></returns>
public Vector2D CalculateSteeringForce()
{
//reset the force
_steeringForce.Zero();
//this will hold the value of each individual steering force
_steeringForce = sumForces();
//make sure the force doesn't exceed the vehicles maximum allowable
_steeringForce.Truncate(_player.MaxForce);
return(_steeringForce);
}