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MASON is a fast discrete-event multiagent simulation library core in Java, designed to be the foundation for large custom-purpose Java simulations, and also to provide more than enough functionality for many lightweight simulation needs. MASON contains both a model library and an optional suite of visualization tools in 2D and 3D.

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/*
  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.tutorial3;
import sim.engine.*;
import sim.field.grid.*;
import sim.util.*;


public class Tutorial3 extends SimState
    {
    private static final long serialVersionUID = 1;

    public DoubleGrid2D trails;
    public SparseGrid2D particles;
    
    public int gridWidth = 100;
    public int gridHeight = 100;
    public int numParticles = 500;
    
    public Tutorial3(long seed)
        {
        super(seed);
        }

    public void start()
        {
        super.start();
        trails = new DoubleGrid2D(gridWidth, gridHeight);
        particles = new SparseGrid2D(gridWidth, gridHeight);
        
        Particle p;
        
        for(int i=0 ; i