/*
 * (c) 1999 The Brookings Institution All Rights Reserved
 *
 * Permission to use this software and its documentation for non-commercial
 * purposes and without fee is hereby granted, provided this copyright statement
 * is included. Please contact us for permission for redistribution and other uses.
 * 
 * BROOKINGS MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, 
 * OR NON-INFRINGEMENT. BROOKINGS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
 * LICENSEE AS A RESULT OF USING THIS SOFTWARE OR ITS DERIVATIVES.
 *
 * _Sugarscape_
 * See _Growing Artificial Societies: Social Science from the Ground Up_
 * Brookings Institution Press, The MIT Press
 * Joshua Epstein
 * jepstein@brook.edu
 * Robert Axtell
 * raxtell@brook.edu
 *
 * Miles Parker
 * mparker@brook.edu

 * http://www.brook.edu/es/dynamics/models/ascape
 * The Brookings Institution
 * Washington, D.C.
 * 
 * Alan Lockard
 * alockard@gmu.edu
 */

package edu.brook.sugarscape;

import java.lang.*;

import edu.brook.ascape.model.*;
import edu.brook.ascape.rule.*;
import edu.brook.ascape.util.*;


/**
 * This trade rule orders neighbors randomly, and trades once
 * with each of the neighbors. Methods for making
 * and accepting offers are attributes of the trading agents, themselves.
 *
 * @author Alan Lockard
 * @version 1.0
 */ 
public class TradeT2 extends TradeT {

    Exchange2 exchange;

    public void execute(Agent agent) {
        Cell[] neighbors = ((CellOccupant) agent).getNeighborsOnHost();
        //pick a random series from the set of series that match the number of neighbors
        //(Assumes von Neumann neighborhood, otherwise creates error)
        int[] series = Utility.uniqueSeries[neighbors.length][randomToLimit(Utility.uniqueSeries[neighbors.length].length)];
        for (int i = 0; i < series.length; i++) { 
	    exchange = new Exchange2(((SpiceAgent) agent), ((SpiceAgent) neighbors[i]));
	    if (((SpiceAgent) neighbors[i]).acceptOffer ((Exchange) exchange)) {
		executeTrade((Exchange) exchange);
            }
        }
    }
}