source: src/main/java/parties/in4010/q12015/group17/Group17.java@ 127

package parties.in4010.q12015.group17;

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

import genius.core.AgentID;
import genius.core.Bid;
import genius.core.actions.Accept;
import genius.core.actions.Action;
import genius.core.actions.Offer;
import genius.core.bidding.BidDetails;
import genius.core.boaframework.NegotiationSession;
import genius.core.boaframework.SessionData;
import genius.core.boaframework.SortedOutcomeSpace;
import genius.core.parties.AbstractNegotiationParty;
import genius.core.parties.NegotiationInfo;

/**
 * Group 17's negotiation party. It is inspired by the BOA framework and has
 * split up its offer strategy, opponent modelling and accept strategy. These
 * classes are {@link OfferStrat}, {@link OpMod} and {@link AcceptStrategy}.
 * Essentially, the only function this class has is to correctly forward the
 * data and requests it receives to the former three classes and then return
 * their responses.
 */
public class Group17 extends AbstractNegotiationParty {
        private boolean initOM = true;
        private boolean initOS = true;
        private OpMod om;
        private NegotiationSession negotiationSession;
        private OfferStrat os;
        private AcceptStrategy acceptStrategy;
        private SortedOutcomeSpace sos;
        private boolean acceptOffer = false;
        private Bid lastOffer;

        @Override
        public void init(NegotiationInfo info) {
                super.init(info);
                sos = new SortedOutcomeSpace(utilitySpace);
                SessionData sessionData = new SessionData();
                acceptStrategy = new AcceptStrategy(utilitySpace, timeline);
                om = new OpMod();
                negotiationSession = new NegotiationSession(sessionData,
                                getUtilitySpace(), timeline, null, info.getUserModel());
                os = new OfferStrat();
        }

        /**
         * Each round this method gets called and ask you to accept or offer. The
         * first party in the first round is a bit different, it can only propose an
         * offer.
         *
         * @param validActions
         *            A list containing both {@link Accept} and {@link Offer} or
         *            only {@link Offer}
         * @return The chosen {@link Action}.
         */
        @Override
        public Action chooseAction(List<Class<? extends Action>> validActions) {
                if (initOS) { // Verify if the init function has run.
                        os.init(negotiationSession, sos, om);
                        initOS = false;
                }

                if (acceptOffer) {
                        return new Accept(getPartyId(), lastOffer);
                } else {
                        BidDetails bd = os.determineNextBid();
                        negotiationSession.getOwnBidHistory().add(bd);
                        return new Offer(getPartyId(), bd.getBid());
                }
        }

        /**
         * All {@link Action}s performed by the other parties will be received as a
         * message. You can use this information to your advantage, for example to
         * predict their utility.
         *
         * @param sender
         *            The party that performed the {@link Action}.
         * @param action
         *            The {@link Action} that the sending party performed.
         */
        @Override
        public void receiveMessage(AgentID sender, Action action) {
                super.receiveMessage(sender, action);
                if (initOM) { // Verify if the init function has run.
                        om.init(negotiationSession, new HashMap<String, Double>());
                        initOM = false;
                }

                if (action instanceof Offer) {
                        lastOffer = ((Offer) action).getBid();
                        try { // Update the model according to the offer presented to us.
                                om.updateModel(lastOffer, sender.toString());
                        } catch (Exception e) {
                                e.printStackTrace();
                        } // Determine if we want to accept this offer.
                        acceptOffer = acceptStrategy.determineAcceptability(lastOffer);
                }
        }

        @Override
        public String getDescription() {
                return "IN4010 Group 17's agent party";
        }
}