Exemple #1
0
        /// <summary>
        /// Gets the behavior
        /// </summary>
        /// <param name="sc"></param>
        /// <param name="fron"></param>
        /// <returns></returns>
        public SupraLaneBehavior GetBehavior(SpeedCommand sc, Coordinates front, List <int> ignorable)
        {
            LinePath initPath = this.Lane.InitialPath(front);
            LinePath finPath  = this.Lane.FinalPath(front);

            int il = Lane.Initial.NumberOfLanesLeft(front, true);
            int ir = Lane.Initial.NumberOfLanesRight(front, true);
            int fl = Lane.Final.NumberOfLanesLeft(front, true);
            int fr = Lane.Final.NumberOfLanesRight(front, true);

            SupraLaneBehavior slb = new SupraLaneBehavior(
                Lane.Initial.LaneId, initPath, Lane.Initial.Width, il, ir,
                Lane.Final.LaneId, finPath, Lane.Final.Width, fl, fr, sc, ignorable, this.Lane.IntersectionPolygon);

            return(slb);
        }
        /// <summary>
        /// Intelligence thread
        /// </summary>
        public void CoreIntelligence()
        {
            // wait for entry data
            this.WaitForEntryData();

            // jumpstart behavioral
            this.Behavioral.Jumpstart();

            // timer, run at 10Hz
            MMWaitableTimer cycleTimer = new MMWaitableTimer(100);

            // stopwatch
            Stopwatch stopwatch  = new Stopwatch();
            Stopwatch stopwatch2 = new Stopwatch();

            // set initial state
            CoreCommon.CorePlanningState = new StartUpState();

            // send the projection to the operational components
            CoreCommon.Communications.TrySendProjection();
            CoreCommon.Communications.TryOperationalTestFacadeConnect();

            // always run
            while (this.arbiterMode == ArbiterMode.Run || this.arbiterMode == ArbiterMode.Pause)
            {
                try
                {
                    // make sure we run at 10Hz
                    cycleTimer.WaitEvent.WaitOne();

                    if (this.arbiterMode == ArbiterMode.Run)
                    {
                        // start stopwatch
                        stopwatch.Reset();
                        stopwatch.Start();

                        // reset ai information
                        CoreCommon.CurrentInformation = new ArbiterInformation();

                        // check for null current state
                        if (CoreCommon.CorePlanningState == null)
                        {
                            CoreCommon.CorePlanningState = new StartUpState();
                            throw new Exception("CoreCommon.CorePlanningState == null, returning to startup state");
                        }

                        // get goal
                        INavigableNode goal = StateReasoning.FilterGoal(CoreCommon.Communications.GetVehicleState());

                        // filter the state for needed changes
                        CoreCommon.CorePlanningState = StateReasoning.FilterStates(CoreCommon.Communications.GetCarMode(), Behavioral);

                        // set current state
                        CoreCommon.CurrentInformation.CurrentState     = CoreCommon.CorePlanningState.ShortDescription();
                        CoreCommon.CurrentInformation.CurrentStateInfo = CoreCommon.CorePlanningState.StateInformation();

                        // plan the maneuver
                        Maneuver m = Behavioral.Plan(
                            CoreCommon.Communications.GetVehicleState(),
                            CoreCommon.Communications.GetVehicleSpeed().Value,
                            CoreCommon.Communications.GetObservedVehicles(),
                            CoreCommon.Communications.GetObservedObstacles(),
                            CoreCommon.Communications.GetCarMode(),
                            goal);

                        // set next state
                        CoreCommon.CorePlanningState                = m.PrimaryState;
                        CoreCommon.CurrentInformation.NextState     = CoreCommon.CorePlanningState.ShortDescription();
                        CoreCommon.CurrentInformation.NextStateInfo = CoreCommon.CorePlanningState.StateInformation();

                        // get ignorable
                        List <int> toIgnore = new List <int>();
                        if (m.PrimaryBehavior is StayInLaneBehavior)
                        {
                            StayInLaneBehavior silb = (StayInLaneBehavior)m.PrimaryBehavior;

                            if (silb.IgnorableObstacles != null)
                            {
                                toIgnore.AddRange(silb.IgnorableObstacles);
                            }
                            else
                            {
                                ArbiterOutput.Output("stay in lane ignorable obstacles null");
                            }
                        }
                        else if (m.PrimaryBehavior is SupraLaneBehavior)
                        {
                            SupraLaneBehavior slb = (SupraLaneBehavior)m.PrimaryBehavior;

                            if (slb.IgnorableObstacles != null)
                            {
                                toIgnore.AddRange(slb.IgnorableObstacles);
                            }
                            else
                            {
                                ArbiterOutput.Output("Supra lane ignorable obstacles null");
                            }
                        }
                        CoreCommon.CurrentInformation.FVTIgnorable = toIgnore.ToArray();

                        // reset the execution stopwatch
                        this.executionStopwatch.Stop();
                        this.executionStopwatch.Reset();
                        this.executionStopwatch.Start();

                        // send behavior to communications
                        CoreCommon.Communications.Execute(m.PrimaryBehavior);
                        CoreCommon.CurrentInformation.NextBehavior          = m.PrimaryBehavior.ToShortString();
                        CoreCommon.CurrentInformation.NextBehaviorInfo      = m.PrimaryBehavior.ShortBehaviorInformation();
                        CoreCommon.CurrentInformation.NextSpeedCommand      = m.PrimaryBehavior.SpeedCommandString();
                        CoreCommon.CurrentInformation.NextBehaviorTimestamp = m.PrimaryBehavior.TimeStamp.ToString("F6");
                        #region Turn Decorators
                        // set turn signal decorators
                        if (m.PrimaryBehavior.Decorators != null)
                        {
                            bool foundDec = false;

                            foreach (BehaviorDecorator bd in m.PrimaryBehavior.Decorators)
                            {
                                if (bd is TurnSignalDecorator)
                                {
                                    if (!foundDec)
                                    {
                                        TurnSignalDecorator tsd = (TurnSignalDecorator)bd;
                                        foundDec = true;
                                        CoreCommon.CurrentInformation.NextBehaviorTurnSignals = tsd.Signal.ToString();
                                    }
                                    else
                                    {
                                        CoreCommon.CurrentInformation.NextBehaviorTurnSignals = "Multiple!";
                                    }
                                }
                            }
                        }
                        #endregion

                        // filter the lane state
                        if (CoreCommon.CorePlanningState.UseLaneAgent)
                        {
                            this.coreLaneAgent.UpdateInternal(CoreCommon.CorePlanningState.InternalLaneState, CoreCommon.CorePlanningState.ResetLaneAgent);
                            this.coreLaneAgent.UpdateEvidence(CoreCommon.Communications.GetVehicleState().Area);
                            CoreCommon.CorePlanningState = this.coreLaneAgent.UpdateFilter();
                        }

                        // log and send information to remote listeners
                        CoreCommon.Communications.UpdateInformation(CoreCommon.CurrentInformation);

                        // check cycle time
                        stopwatch.Stop();
                        if (stopwatch.ElapsedMilliseconds > 100 || global::UrbanChallenge.Arbiter.Core.ArbiterSettings.Default.PrintCycleTimesAlways)
                        {
                            ArbiterOutput.Output("Cycle t: " + stopwatch.ElapsedMilliseconds.ToString());
                        }
                    }
                }
                catch (Exception e)
                {
                    // notify exception made its way up to the core thread
                    ArbiterOutput.Output("\n\n");
                    ArbiterOutput.Output("Core Intelligence Thread caught exception!! \n");
                    ArbiterOutput.Output(" Exception type: " + e.GetType().ToString());
                    ArbiterOutput.Output(" Exception thrown by: " + e.TargetSite + "\n");
                    ArbiterOutput.Output(" Stack Trace: " + e.StackTrace + "\n");

                    if (e is NullReferenceException)
                    {
                        NullReferenceException nre = (NullReferenceException)e;
                        ArbiterOutput.Output("Null reference exception from: " + nre.Source);
                    }

                    ArbiterOutput.Output("\n");

                    if (this.executionStopwatch.ElapsedMilliseconds / 1000.0 > 3.0)
                    {
                        ArbiterOutput.Output(" Time since last execution more then 3 seconds");
                        ArbiterOutput.Output(" Resetting and Restarting Intelligence");
                        try
                        {
                            Thread tmp = new Thread(ResetThread);
                            tmp.IsBackground = true;
                            this.arbiterMode = ArbiterMode.Stop;
                            tmp.Start();
                        }
                        catch (Exception ex)
                        {
                            ArbiterOutput.Output("\n\n");
                            ArbiterOutput.Output("Core Intelligence Thread caught exception attempting to restart itself1!!!!HOLYCRAP!! \n");
                            ArbiterOutput.Output(" Exception thrown by: " + ex.TargetSite + "\n");
                            ArbiterOutput.Output(" Stack Trace: " + ex.StackTrace + "\n");
                            ArbiterOutput.Output(" Resetting planning state to startup");
                            ArbiterOutput.Output("\n");
                            CoreCommon.CorePlanningState = new StartUpState();
                        }
                    }
                }
            }
        }
        /// <summary>
        /// Plans what maneuer we should take next
        /// </summary>
        /// <param name="planningState"></param>
        /// <param name="navigationalPlan"></param>
        /// <param name="vehicleState"></param>
        /// <param name="vehicles"></param>
        /// <param name="obstacles"></param>
        /// <param name="blockage"></param>
        /// <returns></returns>
        public Maneuver Plan(IState planningState, RoadPlan navigationalPlan, VehicleState vehicleState,
                             SceneEstimatorTrackedClusterCollection vehicles, SceneEstimatorUntrackedClusterCollection obstacles,
                             List <ITacticalBlockage> blockages, double vehicleSpeed)
        {
            // assign vehicles to their lanes
            this.roadMonitor.Assign(vehicles);

            // navigation tasks
            this.taskReasoning.navigationPlan = navigationalPlan;

            #region Stay in lane

            // maneuver given we are in a lane
            if (planningState is StayInLaneState)
            {
                // get state
                StayInLaneState sils = (StayInLaneState)planningState;

                // check reasoning if needs to be different
                if (this.forwardReasoning == null || !this.forwardReasoning.Lane.Equals(sils.Lane))
                {
                    if (sils.Lane.LaneOnLeft == null)
                    {
                        this.leftLateralReasoning = new LateralReasoning(null, SideObstacleSide.Driver);
                    }
                    else if (sils.Lane.LaneOnLeft.Way.Equals(sils.Lane.Way))
                    {
                        this.leftLateralReasoning = new LateralReasoning(sils.Lane.LaneOnLeft, SideObstacleSide.Driver);
                    }
                    else
                    {
                        this.leftLateralReasoning = new OpposingLateralReasoning(sils.Lane.LaneOnLeft, SideObstacleSide.Driver);
                    }

                    if (sils.Lane.LaneOnRight == null)
                    {
                        this.rightLateralReasoning = new LateralReasoning(null, SideObstacleSide.Passenger);
                    }
                    else if (sils.Lane.LaneOnRight.Way.Equals(sils.Lane.Way))
                    {
                        this.rightLateralReasoning = new LateralReasoning(sils.Lane.LaneOnRight, SideObstacleSide.Passenger);
                    }
                    else
                    {
                        this.rightLateralReasoning = new OpposingLateralReasoning(sils.Lane.LaneOnRight, SideObstacleSide.Passenger);
                    }

                    this.forwardReasoning = new ForwardReasoning(this.leftLateralReasoning, this.rightLateralReasoning, sils.Lane);
                }

                // populate navigation with road plan
                taskReasoning.SetRoadPlan(navigationalPlan, sils.Lane);

                // as penalties for lane changes already taken into account, can just look at
                // best lane plan to figure out what to do
                TypeOfTasks bestTask = taskReasoning.Best;

                // get the forward lane plan
                Maneuver forwardManeuver = forwardReasoning.ForwardManeuver(sils.Lane, vehicleState, navigationalPlan, blockages, sils.WaypointsToIgnore);

                // get the secondary
                Maneuver?secondaryManeuver = forwardReasoning.AdvancedSecondary(sils.Lane, vehicleState, navigationalPlan, blockages, sils.WaypointsToIgnore, bestTask);                   //forwardReasoning.SecondaryManeuver(sils.Lane, vehicleState, navigationalPlan, blockages, sils.WaypointsToIgnore, bestTask);

                // check behavior type for uturn
                if (secondaryManeuver.HasValue && secondaryManeuver.Value.PrimaryBehavior is UTurnBehavior)
                {
                    return(secondaryManeuver.Value);
                }

                // check if we wish to change lanes here
                if (bestTask != TypeOfTasks.Straight)
                {
                    // parameters
                    LaneChangeParameters parameters;
                    secondaryManeuver = this.forwardReasoning.AdvancedDesiredLaneChangeManeuver(sils.Lane, bestTask == TypeOfTasks.Left ? true : false, navigationalPlan.BestPlan.laneWaypointOfInterest.PointOfInterest,
                                                                                                navigationalPlan, vehicleState, blockages, sils.WaypointsToIgnore, new LaneChangeInformation(LaneChangeReason.Navigation, this.forwardReasoning.ForwardMonitor.ForwardVehicle.CurrentVehicle), secondaryManeuver, out parameters);
                }

                // final maneuver
                Maneuver finalManeuver = secondaryManeuver.HasValue ? secondaryManeuver.Value : forwardManeuver;

                // set opposing vehicle flag
                if (false && this.leftLateralReasoning != null && this.leftLateralReasoning is OpposingLateralReasoning && finalManeuver.PrimaryBehavior is StayInLaneBehavior)
                {
                    StayInLaneBehavior       silb = (StayInLaneBehavior)finalManeuver.PrimaryBehavior;
                    OpposingLateralReasoning olr  = (OpposingLateralReasoning)this.leftLateralReasoning;
                    olr.ForwardMonitor.ForwardVehicle.Update(olr.lane, vehicleState);
                    if (olr.ForwardMonitor.ForwardVehicle.CurrentVehicle != null)
                    {
                        ForwardVehicleTrackingControl fvtc = olr.ForwardMonitor.ForwardVehicle.GetControl(olr.lane, vehicleState);
                        BehaviorDecorator[]           bds  = new BehaviorDecorator[finalManeuver.PrimaryBehavior.Decorators.Count];
                        finalManeuver.PrimaryBehavior.Decorators.CopyTo(bds);
                        finalManeuver.PrimaryBehavior.Decorators = new List <BehaviorDecorator>(bds);
                        silb.Decorators.Add(new OpposingLaneDecorator(fvtc.xSeparation, olr.ForwardMonitor.ForwardVehicle.CurrentVehicle.Speed));
                        ArbiterOutput.Output("Added Opposing Lane Decorator: " + fvtc.xSeparation.ToString("F2") + "m, " + olr.ForwardMonitor.ForwardVehicle.CurrentVehicle.Speed.ToString("f2") + "m/s");
                    }
                    finalManeuver.PrimaryBehavior = silb;
                }

                // return the final
                return(finalManeuver);
            }

            #endregion

            #region Stay in supra lane

            else if (CoreCommon.CorePlanningState is StayInSupraLaneState)
            {
                // get state
                StayInSupraLaneState sisls = (StayInSupraLaneState)planningState;

                // check reasoning
                if (this.forwardReasoning == null || !this.forwardReasoning.Lane.Equals(sisls.Lane))
                {
                    if (sisls.Lane.Initial.LaneOnLeft == null)
                    {
                        this.leftLateralReasoning = new LateralReasoning(null, SideObstacleSide.Driver);
                    }
                    else if (sisls.Lane.Initial.LaneOnLeft.Way.Equals(sisls.Lane.Initial.Way))
                    {
                        this.leftLateralReasoning = new LateralReasoning(sisls.Lane.Initial.LaneOnLeft, SideObstacleSide.Driver);
                    }
                    else
                    {
                        this.leftLateralReasoning = new OpposingLateralReasoning(sisls.Lane.Initial.LaneOnLeft, SideObstacleSide.Driver);
                    }

                    if (sisls.Lane.Initial.LaneOnRight == null)
                    {
                        this.rightLateralReasoning = new LateralReasoning(null, SideObstacleSide.Passenger);
                    }
                    else if (sisls.Lane.Initial.LaneOnRight.Way.Equals(sisls.Lane.Initial.Way))
                    {
                        this.rightLateralReasoning = new LateralReasoning(sisls.Lane.Initial.LaneOnRight, SideObstacleSide.Passenger);
                    }
                    else
                    {
                        this.rightLateralReasoning = new OpposingLateralReasoning(sisls.Lane.Initial.LaneOnRight, SideObstacleSide.Passenger);
                    }

                    this.forwardReasoning = new ForwardReasoning(this.leftLateralReasoning, this.rightLateralReasoning, sisls.Lane);
                }

                // populate navigation with road plan
                taskReasoning.SetSupraRoadPlan(navigationalPlan, sisls.Lane);

                // as penalties for lane changes already taken into account, can just look at
                // best lane plan to figure out what to do
                // TODO: NOTE THAT THIS BEST TASK SHOULD BE IN THE SUPRA LANE!! (DO WE NEED THIS)
                TypeOfTasks bestTask = taskReasoning.Best;

                // get the forward lane plan
                Maneuver forwardManeuver = forwardReasoning.ForwardManeuver(sisls.Lane, vehicleState, navigationalPlan, blockages, sisls.WaypointsToIgnore);

                // get hte secondary
                Maneuver?secondaryManeuver = forwardReasoning.AdvancedSecondary(sisls.Lane, vehicleState, navigationalPlan, blockages, new List <ArbiterWaypoint>(), bestTask);                //forwardReasoning.SecondaryManeuver(sisls.Lane, vehicleState, navigationalPlan, blockages, sisls.WaypointsToIgnore, bestTask);

                // final maneuver
                Maneuver finalManeuver = secondaryManeuver.HasValue ? secondaryManeuver.Value : forwardManeuver;

                // check if stay in lane
                if (false && this.leftLateralReasoning != null && this.leftLateralReasoning is OpposingLateralReasoning && finalManeuver.PrimaryBehavior is SupraLaneBehavior)
                {
                    SupraLaneBehavior        silb = (SupraLaneBehavior)finalManeuver.PrimaryBehavior;
                    OpposingLateralReasoning olr  = (OpposingLateralReasoning)this.leftLateralReasoning;
                    olr.ForwardMonitor.ForwardVehicle.Update(olr.lane, vehicleState);
                    if (olr.ForwardMonitor.ForwardVehicle.CurrentVehicle != null)
                    {
                        ForwardVehicleTrackingControl fvtc = olr.ForwardMonitor.ForwardVehicle.GetControl(olr.lane, vehicleState);
                        BehaviorDecorator[]           bds  = new BehaviorDecorator[finalManeuver.PrimaryBehavior.Decorators.Count];
                        finalManeuver.PrimaryBehavior.Decorators.CopyTo(bds);
                        finalManeuver.PrimaryBehavior.Decorators = new List <BehaviorDecorator>(bds);
                        silb.Decorators.Add(new OpposingLaneDecorator(fvtc.xSeparation, olr.ForwardMonitor.ForwardVehicle.CurrentVehicle.Speed));
                        ArbiterOutput.Output("Added Opposing Lane Decorator: " + fvtc.xSeparation.ToString("F2") + "m, " + olr.ForwardMonitor.ForwardVehicle.CurrentVehicle.Speed.ToString("f2") + "m/s");
                    }
                    finalManeuver.PrimaryBehavior = silb;
                }

                // return the final
                return(finalManeuver);

                // notify

                /*if (secondaryManeuver.HasValue)
                 *      ArbiterOutput.Output("Secondary Maneuver");
                 *
                 * // check for forward's secondary maneuver for desired behavior other than going straight
                 * if (secondaryManeuver.HasValue)
                 * {
                 *      // return the secondary maneuver
                 *      return secondaryManeuver.Value;
                 * }
                 * // otherwise our default behavior and posibly desired is going straight
                 * else
                 * {
                 *      // return default forward maneuver
                 *      return forwardManeuver;
                 * }*/
            }

            #endregion

            #region Change Lanes State

            // maneuver given we are changing lanes
            else if (planningState is ChangeLanesState)
            {
                // get state
                ChangeLanesState    cls   = (ChangeLanesState)planningState;
                LaneChangeReasoning lcr   = new LaneChangeReasoning();
                Maneuver            final = lcr.PlanLaneChange(cls, vehicleState, navigationalPlan, blockages, new List <ArbiterWaypoint>());

                                #warning need to filter through waypoints to ignore so don't get stuck by a stop line
                //Maneuver final = new Maneuver(cls.Resume(vehicleState, vehicleSpeed), cls, cls.DefaultStateDecorators, vehicleState.Timestamp);

                // return the final planned maneuver
                return(final);

                /*if (!cls.parameters..TargetIsOnComing)
                 * {
                 *      // check reasoning
                 *      if (this.forwardReasoning == null || !this.forwardReasoning.Lane.Equals(cls.TargetLane))
                 *      {
                 *              if (cls.TargetLane.LaneOnLeft.Way.Equals(cls.TargetLane.Way))
                 *                      this.leftLateralReasoning = new LateralReasoning(cls.TargetLane.LaneOnLeft);
                 *              else
                 *                      this.leftLateralReasoning = new OpposingLateralReasoning(cls.TargetLane.LaneOnLeft);
                 *
                 *              if (cls.TargetLane.LaneOnRight.Way.Equals(cls.TargetLane.Way))
                 *                      this.rightLateralReasoning = new LateralReasoning(cls.TargetLane.LaneOnRight);
                 *              else
                 *                      this.rightLateralReasoning = new OpposingLateralReasoning(cls.TargetLane.LaneOnRight);
                 *
                 *              this.forwardReasoning = new ForwardReasoning(this.leftLateralReasoning, this.rightLateralReasoning, cls.TargetLane);
                 *      }
                 *
                 *
                 *      // get speed command
                 *      double speed;
                 *      double distance;
                 *      this.forwardReasoning.ForwardMonitor.StoppingParams(new ArbiterWaypoint(cls.TargetUpperBound.pt, null), cls.TargetLane, vehicleState.Front, vehicleState.ENCovariance, out speed, out distance);
                 *      SpeedCommand sc = new ScalarSpeedCommand(Math.Max(speed, 0.0));
                 *      cls.distanceLeft = distance;
                 *
                 *      // get behavior
                 *      ChangeLaneBehavior clb = new ChangeLaneBehavior(cls.InitialLane.LaneId, cls.TargetLane.LaneId, cls.InitialLane.LaneOnLeft != null && cls.InitialLane.LaneOnLeft.Equals(cls.TargetLane),
                 *              distance, sc, new List<int>(), cls.InitialLane.PartitionPath, cls.TargetLane.PartitionPath, cls.InitialLane.Width, cls.TargetLane.Width);
                 *
                 *      // plan over the target lane
                 *      //Maneuver targetManeuver = forwardReasoning.ForwardManeuver(cls.TargetLane, vehicleState, !cls.TargetIsOnComing, blockage, cls.InitialLaneState.IgnorableWaypoints);
                 *
                 *      // plan over the initial lane
                 *      //Maneuver initialManeuver = forwardReasoning.ForwardManeuver(cls.InitialLane, vehicleState, !cls.InitialIsOncoming, blockage, cls.InitialLaneState.IgnorableWaypoints);
                 *
                 *      // generate the change lanes command
                 *      //Maneuver final = laneChangeReasoning.PlanLaneChange(cls, initialManeuver, targetManeuver);
                 *
                 * }
                 * else
                 * {
                 *      throw new Exception("Change lanes into oncoming not supported yet by road tactical");
                 * }*/
            }

            #endregion

            #region Opposing Lanes State

            // maneuver given we are in an opposing lane
            else if (planningState is OpposingLanesState)
            {
                // get state
                OpposingLanesState ols         = (OpposingLanesState)planningState;
                ArbiterWayId       opposingWay = ols.OpposingWay;

                ols.SetClosestGood(vehicleState);
                ols.ResetLaneAgent = false;

                // check reasoning
                if (this.opposingReasoning == null || !this.opposingReasoning.Lane.Equals(ols.OpposingLane))
                {
                    if (ols.OpposingLane.LaneOnRight == null)
                    {
                        this.leftLateralReasoning = new LateralReasoning(null, SideObstacleSide.Driver);
                    }
                    else if (!ols.OpposingLane.LaneOnRight.Way.Equals(ols.OpposingLane.Way))
                    {
                        this.leftLateralReasoning = new LateralReasoning(ols.OpposingLane.LaneOnRight, SideObstacleSide.Driver);
                    }
                    else
                    {
                        this.leftLateralReasoning = new OpposingLateralReasoning(ols.OpposingLane.LaneOnRight, SideObstacleSide.Driver);
                    }

                    if (ols.OpposingLane.LaneOnLeft == null)
                    {
                        this.rightLateralReasoning = new LateralReasoning(null, SideObstacleSide.Passenger);
                    }
                    else if (!ols.OpposingLane.LaneOnLeft.Way.Equals(ols.OpposingLane.Way))
                    {
                        this.rightLateralReasoning = new LateralReasoning(ols.OpposingLane.LaneOnLeft, SideObstacleSide.Passenger);
                    }
                    else
                    {
                        this.rightLateralReasoning = new OpposingLateralReasoning(ols.OpposingLane.LaneOnLeft, SideObstacleSide.Passenger);
                    }

                    this.opposingReasoning = new OpposingReasoning(this.leftLateralReasoning, this.rightLateralReasoning, ols.OpposingLane);
                }

                // get the forward lane plan
                Maneuver forwardManeuver = this.opposingReasoning.ForwardManeuver(ols.OpposingLane, ols.ClosestGoodLane, vehicleState, navigationalPlan, blockages);

                // get the secondary maneuver
                Maneuver?secondaryManeuver = null;
                if (ols.ClosestGoodLane != null)
                {
                    secondaryManeuver = this.opposingReasoning.SecondaryManeuver(ols.OpposingLane, ols.ClosestGoodLane, vehicleState, blockages, ols.EntryParameters);
                }

                // check for reasonings secondary maneuver for desired behavior other than going straight
                if (secondaryManeuver != null)
                {
                    // return the secondary maneuver
                    return(secondaryManeuver.Value);
                }
                // otherwise our default behavior and posibly desired is going straight
                else
                {
                    // return default forward maneuver
                    return(forwardManeuver);
                }
            }

            #endregion

            #region not imp

            /*
             #region Uturn
             *
             * // we are making a uturn
             * else if (planningState is uTurnState)
             * {
             *      // get the uturn state
             *      uTurnState uts = (uTurnState)planningState;
             *
             *      // get the final lane we wish to be in
             *      ArbiterLane targetLane = uts.TargetLane;
             *
             *      // get operational state
             *      Type operationalBehaviorType = CoreCommon.Communications.GetCurrentOperationalBehavior();
             *
             *      // check if we have completed the uturn
             *      bool complete = operationalBehaviorType == typeof(StayInLaneBehavior);
             *
             *      // default next behavior
             *      Behavior nextBehavior = new StayInLaneBehavior(targetLane.LaneId, new ScalarSpeedCommand(CoreCommon.OperationalStopSpeed), new List<int>());
             *      nextBehavior.Decorators = TurnDecorators.NoDecorators;
             *
             *      // check if complete
             *      if (complete)
             *      {
             *              // stay in lane
             *              List<ArbiterLaneId> aprioriLanes = new List<ArbiterLaneId>();
             *              aprioriLanes.Add(targetLane.LaneId);
             *              return new Maneuver(nextBehavior, new StayInLaneState(targetLane), null, null, aprioriLanes, true);
             *      }
             *      // otherwise keep same
             *      else
             *      {
             *              // set abort behavior
             *              ((StayInLaneBehavior)nextBehavior).SpeedCommand = new ScalarSpeedCommand(0.0);
             *
             *              // maneuver
             *              return new Maneuver(uts.DefaultBehavior, uts, nextBehavior, new StayInLaneState(targetLane));
             *      }
             * }
             *
             #endregion*/

            #endregion

            #region Unknown

            // unknown state
            else
            {
                throw new Exception("Unknown Travel State type: planningState: " + planningState.ToString() + "\n with type: " + planningState.GetType().ToString());
            }

            #endregion
        }