FittestStrategyReportVariables.java

/*
 * JABM - Java Agent-Based Modeling Toolkit
 * Copyright (C) 2013 Steve Phelps
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 3 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 */
package net.sourceforge.jabm.report;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;

import net.sourceforge.jabm.agent.Agent;
import net.sourceforge.jabm.agent.AgentList;
import net.sourceforge.jabm.event.SimEvent;
import net.sourceforge.jabm.event.SimulationEvent;
import net.sourceforge.jabm.strategy.Strategy;
import net.sourceforge.jabm.util.MutableStringWrapper;

public class FittestStrategyReportVariables implements ReportVariables {

	protected MutableStringWrapper fileNamePrefix;
	
	protected String fileNameSuffix;
	
	protected ObjectOutputStream out;
	
	protected Agent fittestAgent;
	
	protected int fileCounter;
	
	public FittestStrategyReportVariables(MutableStringWrapper fileNamePrefix,
			String fileNameSuffix) {
		super();
		this.fileNamePrefix = fileNamePrefix;
		this.fileNameSuffix = fileNameSuffix;
	}

	@Override
	public void compute(SimEvent event) {
		if (event instanceof SimulationEvent) {
			AgentList agents =
				((SimulationEvent) event).getSimulation().getSimulationController().getPopulation().getAgentList();
			AgentList sortedAgents = new AgentList(agents.getAgents());
			sortedAgents.sortAgentsByFitness();
			this.fittestAgent = sortedAgents.get(sortedAgents.size() - 1);
			Strategy fittestStrategy = fittestAgent.getStrategy();
			try {
				out.writeObject(fittestStrategy);
			} catch (IOException e) {
				throw new RuntimeException(e);
			}
		}
	}

	@Override
	public Map<Object, Number> getVariableBindings() {
		HashMap<Object, Number> result = new HashMap<Object, Number>();
		result.put("fittestagent.fitness", this.fittestAgent.getPayoff());
		return result;
	}

	@Override
	public void initialise(SimEvent event) {
		fileCounter++;
		createOutputFile();
	}
	
	public void createOutputFile() {
		try {
			out = new ObjectOutputStream(new FileOutputStream(fileNamePrefix
					+ fileNameSuffix + "-" + fileCounter + ".bin"));
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
	}

	public MutableStringWrapper getFileNamePrefix() {
		return fileNamePrefix;
	}

	public void setFileNamePrefix(MutableStringWrapper fileNamePrefix) {
		this.fileNamePrefix = fileNamePrefix;
	}

	public String getFileNameSuffix() {
		return fileNameSuffix;
	}

	public void setFileNameSuffix(String fileNameSuffix) {
		this.fileNameSuffix = fileNameSuffix;
	}

	@Override
	public void eventOccurred(SimEvent event) {
	}

	@Override
	public void dispose(SimEvent event) {
	}
	
	public String getName() {
		return this.getClass().getName();
	}

}