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TripGenerator.java
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TripGenerator.java
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/*
* Copyright 2018 David Prentiss
*/
package sim.app.agentcity;
import sim.util.*;
import sim.util.distribution.*;
import sim.engine.*;
import ec.util.MersenneTwisterFast;
import java.util.Arrays;
/**
* Generates Person objects at an Intersection with a Poisson distribution.
*/
public class TripGenerator implements Steppable {
// MASON
private static final long serialVersionUID = 1;
Stoppable stopper;
long step;
MersenneTwisterFast rand;
// Properties
public final int idNum;
public final Intersection intersection;
public final Poisson distribution;
// Variables
private final double mean;
// Accessors
/*
@Override
public String toString() {
return new StringBuilder()
.append("DriverAgent: {")
.append("idNum: " + idNum)
.append(", ")
.append("desiredSpeed: " + desiredSpeed)
.append(", ")
//.append("destination: " + destination)
//.append(", ")
.append("hasReservation: " + hasReservation)
.append(", ")
.append("nextApproachLeg: " + nextApproachLeg)
.append(", ")
.append("nextTurnCell: " + nextTurnCell)
.append(", ")
.append("nextLeg: " + nextLeg)
.append(", ")
.append("nextDirection: " + nextDirection)
.append(", ")
//.append("nearIntersection: " + nearIntersection)
//.append(", ")
.append("nearApproachLeg: " + nearApproachLeg)
.append(", ")
.append("atApproachLeg: " + atApproachLeg)
.append(", ")
.append("nearIntersection: " + nearIntersection)
.append(", ")
.append("inIntersection: " + inIntersection)
.append(", ")
.append("stepsToWaypoint: " + stepsToWaypoint)
.append(", ")
.append("nearWaypoint: " + nearWaypoint)
.append(", ")
//.append("nearNextLeg: " + nearNextLeg)
//.append(", ")
.append("atNextLeg: " + atNextLeg)
.append("}\n")
.toString();
}
*/
/** Constructor
*
* @param id (required) int label for this class. Should be unique but
* uniqueness is not checked.
*/
public TripGenerator(int id, Intersection intersection, double mean,
MersenneTwisterFast rand) {
idNum = id;
this.intersection = intersection;
this.mean = mean;
this.rand = rand;
distribution = new Poisson(mean, rand);
}
public void step(final SimState state) {
AgentCity ac = (AgentCity)state;
step = ac.schedule.getSteps();
int numPersons = distribution.nextInt();
Person newPerson;
for (int i = numPersons; i > 0; i--) {
Intersection destination =
ac.intersections[rand.nextInt(ac.intersections.length - 1) + 1];
while (destination == intersection) {
destination =
ac.intersections[rand.nextInt(ac.intersections.length - 1) + 1];
}
int newId = (int)step * 10000 + 100 * intersection.idNum + destination.idNum;
newPerson = new Person(newId, intersection, destination);
ac.addTraveler(newPerson);
//System.out.println(ac.travelers.numObjs);
newPerson.stopper = ac.schedule.scheduleRepeating(newPerson, ac.TRIPGEN_SCHEDULE_NUM, 1);
}
}
}