/*
Copyright 2006 by Sean Luke and George Mason University
Licensed under the Academic Free License version 3.0
See the file "LICENSE" for more information
*/
package sim.app.wcss.tutorial10;
import sim.engine.*;
import sim.util.*;
import sim.field.continuous.*;
import sim.field.network.*;
public class Students extends SimState
{
private static final long serialVersionUID = 1;
public Continuous2D yard = new Continuous2D(1.0,100,100);
public int numStudents = 50;
double forceToSchoolMultiplier = 0.01;
double randomMultiplier = 0.1;
public int getNumStudents() { return numStudents; }
public void setNumStudents(int val) { if (val > 0) numStudents = val; }
public double getForceToSchoolMultiplier() { return forceToSchoolMultiplier; }
public void setForceToSchoolMultiplier(double val) { if (forceToSchoolMultiplier >= 0.0) forceToSchoolMultiplier = val; }
public double getRandomMultiplier() { return randomMultiplier; }
public void setRandomMultiplier(double val) { if (randomMultiplier >= 0.0) randomMultiplier = val; }
public Object domRandomMultiplier() { return new sim.util.Interval(0.0, 100.0); }
public double[] getAgitationDistribution()
{
Bag students = buddies.getAllNodes();
double[] distro = new double[students.numObjs];
int len = students.size();
for(int i = 0; i < len; i++)
distro[i] = ((Student)(students.get(i))).getAgitation();
return distro;
}
public Network buddies = new Network(false);
public Students(long seed)
{
super(seed);
}
public void start()
{
super.start();
// clear the yard
yard.clear();
// clear the buddies
buddies.clear();
// add some students to the yard
for(int i = 0; i < numStudents; i++)
{
Student student = new Student();
yard.setObjectLocation(student,
new Double2D(yard.getWidth() * 0.5 + random.nextDouble() - 0.5,
yard.getHeight() * 0.5 + random.nextDouble() - 0.5));
buddies.addNode(student);
schedule.scheduleRepeating(student);
}
// define like/dislike relationships
Bag students = buddies.getAllNodes();
for(int i = 0; i < students.size(); i++)
{
Object student = students.get(i);
// who does he like?
Object studentB = null;
do
{
studentB = students.get(random.nextInt(students.numObjs));
} while (student == studentB);
double buddiness = random.nextDouble();
buddies.addEdge(student, studentB, new Double(buddiness));
// who does he dislike?
do
{
studentB = students.get(random.nextInt(students.numObjs));
} while (student == studentB);
buddiness = random.nextDouble();
buddies.addEdge(student, studentB, new Double( -buddiness));
}
}
public static void main(String[] args)
{
doLoop(Students.class, args);
System.exit(0);
}
}