source: src/main/java/agents/TestingAgent.java@ 126

package agents;

import java.util.HashMap;
import java.util.List;
import java.util.Random;

import genius.core.Agent;
import genius.core.Bid;
import genius.core.Domain;
import genius.core.actions.Accept;
import genius.core.actions.Action;
import genius.core.actions.ActionWithBid;
import genius.core.actions.EndNegotiation;
import genius.core.actions.Offer;
import genius.core.issue.Issue;
import genius.core.issue.IssueDiscrete;
import genius.core.issue.IssueInteger;
import genius.core.issue.IssueReal;
import genius.core.issue.Value;
import genius.core.issue.ValueInteger;
import genius.core.issue.ValueReal;

/**
 * @author W.Pasman Some improvements over the standard SimpleAgent.
 */
public class TestingAgent extends Agent {
        private Action actionOfPartner = null;
        private static double MINIMUM_BID_UTILITY = 0;

        /**
         * init is called when a next session starts with the same opponent.
         */
        public void init() {
                Double reservationValue = utilitySpace.getReservationValue();
                System.out.println(getName());
                System.out.println();
                System.out.println("Discount: " + utilitySpace.getDiscountFactor());
                System.out.println("RV: " + reservationValue);
                Domain domain = utilitySpace.getDomain();
                System.out.println("NumberOfPossibleBids: "
                                + domain.getNumberOfPossibleBids());
                Bid randomBid = domain.getRandomBid(null);
                try {
                        System.out.println("Utitility of bid " + randomBid + " = "
                                        + utilitySpace.getUtility(randomBid));
                } catch (Exception e) {
                        e.printStackTrace();
                }
        }

        public static void main(String[] args) {
                double util = 0.24858884644383605;
                double time = 0.21064712109444447;
                double discount = 0.5;
                double discountedUtil = util * Math.pow(discount, time);
                System.out.println(discountedUtil);
        }

        @Override
        public String getName() {
                return "Testing Agent";
        }

        @Override
        public String getVersion() {
                return "1.3";
        }

        public void ReceiveMessage(Action opponentAction) {
                actionOfPartner = opponentAction;
        }

        public Action chooseAction() {
                Action action = null;
                try {
                        if (actionOfPartner == null)
                                action = chooseRandomBidAction();
                        if (actionOfPartner instanceof Offer) {
                                // get current time
                                double time = timeline.getTime();
                                System.out.println("t = " + Math.round(100 * time) / 100.0
                                                + ", discountedRV = "
                                                + utilitySpace.getReservationValueWithDiscount(time));

                                if (time > 0.1) {
                                        System.out.println("End, because t = " + time);
                                        action = new EndNegotiation(getAgentID());
                                } else
                                        action = chooseRandomBidAction();
                        }
                } catch (Exception e) {
                        System.out.println("Exception in ChooseAction:" + e.getMessage());
                        // best guess if things go wrong
                        action = new Accept(getAgentID(),
                                        ((ActionWithBid) actionOfPartner).getBid());
                }
                return action;
        }

        /**
         * Wrapper for getRandomBid, for convenience.
         * 
         * @return new Action(Bid(..)), with bid utility > MINIMUM_BID_UTIL. If a
         *         problem occurs, it returns an Accept() action.
         */
        private Action chooseRandomBidAction() {
                Bid nextBid = null;
                try {
                        nextBid = getRandomBid();
                } catch (Exception e) {
                        System.out.println("Problem with received bid:" + e.getMessage()
                                        + ". cancelling bidding");
                }
                if (nextBid == null)
                        return (new Accept(getAgentID(),
                                        ((ActionWithBid) actionOfPartner).getBid()));
                return (new Offer(getAgentID(), nextBid));
        }

        /**
         * @return a random bid with high enough utility value.
         * @throws Exception
         *             if we can't compute the utility (eg no evaluators have been
         *             set) or when other evaluators than a DiscreteEvaluator are
         *             present in the util space.
         */
        private Bid getRandomBid() throws Exception {
                HashMap<Integer, Value> values = new HashMap<Integer, Value>(); // pairs
                                                                                                                                                // <issuenumber,chosen
                                                                                                                                                // value
                                                                                                                                                // string>
                List<Issue> issues = utilitySpace.getDomain().getIssues();
                Random randomnr = new Random();

                // createFrom a random bid with utility>MINIMUM_BID_UTIL.
                // note that this may never succeed if you set MINIMUM too high!!!
                // in that case we will search for a bid till the time is up (2 minutes)
                // but this is just a simple agent.
                Bid bid = null;
                double utility;
                do {
                        for (Issue lIssue : issues) {
                                switch (lIssue.getType()) {
                                case DISCRETE:
                                        IssueDiscrete lIssueDiscrete = (IssueDiscrete) lIssue;
                                        int optionIndex = randomnr.nextInt(lIssueDiscrete
                                                        .getNumberOfValues());
                                        values.put(lIssue.getNumber(),
                                                        lIssueDiscrete.getValue(optionIndex));
                                        break;
                                case REAL:
                                        IssueReal lIssueReal = (IssueReal) lIssue;
                                        int optionInd = randomnr.nextInt(lIssueReal
                                                        .getNumberOfDiscretizationSteps() - 1);
                                        values.put(
                                                        lIssueReal.getNumber(),
                                                        new ValueReal(lIssueReal.getLowerBound()
                                                                        + (lIssueReal.getUpperBound() - lIssueReal
                                                                                        .getLowerBound())
                                                                        * (double) (optionInd)
                                                                        / (double) (lIssueReal
                                                                                        .getNumberOfDiscretizationSteps())));
                                        break;
                                case INTEGER:
                                        IssueInteger lIssueInteger = (IssueInteger) lIssue;
                                        int optionIndex2 = lIssueInteger.getLowerBound()
                                                        + randomnr.nextInt(lIssueInteger.getUpperBound()
                                                                        - lIssueInteger.getLowerBound());
                                        values.put(lIssueInteger.getNumber(), new ValueInteger(
                                                        optionIndex2));
                                        break;
                                default:
                                        throw new Exception("issue type " + lIssue.getType()
                                                        + " not supported by SimpleAgent2");
                                }
                        }
                        bid = new Bid(utilitySpace.getDomain(), values);
                        utility = getUtility(bid);
                } while (utility < MINIMUM_BID_UTILITY);

                // System.out.println(this.getName() + " sent " + bid);
                return bid;
        }
}