package org.opentrafficsim.road.gtu.lane.tactical.lmrs;
   
   import org.djunits.value.vdouble.scalar.Acceleration;
   import org.djunits.value.vdouble.scalar.Length;
   import org.djunits.value.vdouble.scalar.Speed;
   import org.opentrafficsim.base.parameters.ParameterException;
   import org.opentrafficsim.base.parameters.Parameters;
   import org.opentrafficsim.core.gtu.GTUException;
   import org.opentrafficsim.core.gtu.perception.EgoPerception;
  import org.opentrafficsim.core.gtu.plan.operational.OperationalPlanException;
  import org.opentrafficsim.road.gtu.lane.LaneBasedGTU;
  import org.opentrafficsim.road.gtu.lane.perception.FilteredIterable;
  import org.opentrafficsim.road.gtu.lane.perception.LanePerception;
  import org.opentrafficsim.road.gtu.lane.perception.PerceptionCollectable;
  import org.opentrafficsim.road.gtu.lane.perception.RelativeLane;
  import org.opentrafficsim.road.gtu.lane.perception.categories.IntersectionPerception;
  import org.opentrafficsim.road.gtu.lane.perception.categories.neighbors.NeighborsPerception;
  import org.opentrafficsim.road.gtu.lane.perception.headway.HeadwayConflict;
  import org.opentrafficsim.road.gtu.lane.perception.headway.HeadwayGTU;
  import org.opentrafficsim.road.gtu.lane.plan.operational.SimpleOperationalPlan;
  import org.opentrafficsim.road.gtu.lane.tactical.Blockable;
  import org.opentrafficsim.road.gtu.lane.tactical.following.CarFollowingModel;
  import org.opentrafficsim.road.gtu.lane.tactical.util.ConflictUtil;
  import org.opentrafficsim.road.gtu.lane.tactical.util.ConflictUtil.ConflictPlans;
  import org.opentrafficsim.road.network.speed.SpeedLimitInfo;
  
  /**
   * <p>
   * Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/node/13">OpenTrafficSim License</a>.
   * <p>
   * @version $Revision$, $LastChangedDate$, by $Author$, initial version 27 jan. 2017 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
   * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
   */
  
  public class AccelerationConflicts implements AccelerationIncentive, Blockable
  {
  
      /** Set of yield plans at conflicts with priority. Remembering for static model. */
      private final ConflictPlans yieldPlans = new ConflictPlans();
  
      /** {@inheritDoc} */
      @Override
      public final void accelerate(final SimpleOperationalPlan simplePlan, final RelativeLane lane, final Length mergeDistance,
              final LaneBasedGTU gtu, final LanePerception perception, final CarFollowingModel carFollowingModel,
              final Speed speed, final Parameters params, final SpeedLimitInfo speedLimitInfo)
              throws OperationalPlanException, ParameterException, GTUException
      {
          EgoPerception<?, ?> ego = perception.getPerceptionCategory(EgoPerception.class);
          Acceleration acceleration = ego.getAcceleration();
          Length length = ego.getLength();
          Length width = ego.getWidth();
          Iterable<HeadwayConflict> conflicts = perception.getPerceptionCategory(IntersectionPerception.class).getConflicts(lane);
          PerceptionCollectable<HeadwayGTU, LaneBasedGTU> leaders =
                  perception.getPerceptionCategory(NeighborsPerception.class).getLeaders(lane);
          if (!lane.isCurrent())
          {
              conflicts = new FilteredIterable<>(conflicts, (conflict) ->
              {
                  return conflict.getDistance().gt(mergeDistance);
              });
          }
          conflicts = onRoute(conflicts, gtu);
          Acceleration a = ConflictUtil.approachConflicts(params, conflicts, leaders, carFollowingModel, length, width, speed,
                  acceleration, speedLimitInfo, this.yieldPlans, gtu, lane);
          simplePlan.minimizeAcceleration(a);
          if (this.yieldPlans.getIndicatorIntent().isLeft())
          {
              simplePlan.setIndicatorIntentLeft(this.yieldPlans.getIndicatorObjectDistance());
          }
          else if (this.yieldPlans.getIndicatorIntent().isRight())
          {
              simplePlan.setIndicatorIntentRight(this.yieldPlans.getIndicatorObjectDistance());
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean isBlocking()
      {
          return this.yieldPlans.isBlocking();
      }
  
      /** {@inheritDoc} */
      @Override
      public final String toString()
      {
          return "AccelerationConflicts";
      }
  
  }