/*
 * Simplest demo network simulation.  
 * class Sim.java R P Futrelle,
 * 7/18/2001 
 */

/**
 * Creates the initial objects and runs
 * the simulation loop.
 * Rather than doing this all in static functions,
 * a single instance of Sim is created and used.
 */

public class Sim {

    Link link;
    Node[] nodes;

    public static void main(String[] args){
    
	Sim sim = new Sim();
	sim.run();

    } // main()

    private Sim() {
	
	link = new Link();
	nodes = new Node[2];
	for(int i=0; i < 2; i++)
	    nodes[i] = new Node(i,link);

    }// Sim()

    /**
     * Loops by running nodes
     */
    private void run() {

	for(int j = 0; j < 5; j++) {
	    nodes[0].send();
	    nodes[1].send();
	    System.out.println("0 " +  nodes[0].receive());
	    System.out.println("1 " +  nodes[1].receive());
	    link.clear();
	}

    } // run()

}// class Sim