void ProcessMovement () {
// handle steering
Vector3 force = Vector3.zero;
if ( this.steeringState == SteeringState.seeking ) {
force = GetSteering_Seek_MaxForces ( this.targetPos );
force.y = 0.0f;
}
else if ( this.steeringState == SteeringState.braking ) {
ApplyBrakingForce();
}
ApplySteeringForce(force);
}