source: src/main/java/agents/anac/y2015/agenth/AgentH.java

package agents.anac.y2015.agenth;

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.ActionWithBid;
import genius.core.actions.Offer;
import genius.core.parties.AbstractNegotiationParty;
import genius.core.parties.NegotiationInfo;
import genius.core.utility.AdditiveUtilitySpace;

/**
 * This is your negotiation party.
 */
public class AgentH extends AbstractNegotiationParty {

        /** 現在の bid */
        protected Bid mCurrentBid;
        /** 現在の bid での効用値 */
        protected double mCurrentUtility;
        /** estimatorMap */
        protected HashMap<Object, BidStrategy> mEstimatorMap;
        /** bid 履歴 */
        protected BidHistory mBidHistory;
        /** ヘルパー */
        protected BidHelper mBidHelper;

        /**
         * Please keep this constructor. This is called by genius.
         *
         * @param utilitySpace
         *            Your utility space.
         * @param deadlines
         *            The deadlines set for this negotiation.
         * @param timeline
         *            Value counting from 0 (start) to 1 (end).
         * @param randomSeed
         *            If you use any randomization, use this seed for it.
         * @throws Exception
         */
        @Override
        public void init(NegotiationInfo info) {
                // Make sure that this constructor calls it's parent.
                super.init(info);

                mEstimatorMap = new HashMap<Object, BidStrategy>();
                mBidHistory = new BidHistory((AdditiveUtilitySpace) getUtilitySpace());
                try {
                        mBidHelper = new BidHelper(this);
                } catch (Exception e) {
                        throw new RuntimeException("init failed:" + e, e);
                }
        }

        /**
         * 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
         *            Either a list containing both accept and offer or only offer.
         * @return The chosen action.
         */
        @Override
        public Action chooseAction(List<Class<? extends Action>> validActions) {
                // 経過時間 [0,1] を取得
                final double time = getTimeLine().getTime();

                // トップバッターなら適当に bid // FIXME
                if (!validActions.contains(Accept.class)) {
                        final Bid bid = generateRandomBid();
                        mBidHistory.offer(this, bid, getUtility(bid));
                        mCurrentBid = new Bid(bid);
                        return new Offer(getPartyId(), bid);
                }

                final double v = mCurrentUtility * time;
                // System.out.println("OreoreAgent#chooseAction(): v="+v);

                // 時間と共に
                if (v < 0.45) {
                        final Bid bid = generateNextBid(time);
                        mBidHistory.offer(this, bid, getUtility(bid));
                        mCurrentBid = new Bid(bid);
                        return new Offer(getPartyId(), bid);
                } else {
                        return new Accept(getPartyId(),
                                        ((ActionWithBid) getLastReceivedAction()).getBid());
                }
        }

        /**
         * All offers proposed 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 did the action.
         * @param action
         *            The action that party did.
         */
        @Override
        public void receiveMessage(AgentID sender, Action action) {
                super.receiveMessage(sender, action);
                // Here you can listen to other parties' messages

                // 現在の bid を更新
                if (action instanceof Offer) {
                        mCurrentBid = ((Offer) action).getBid();
                        mCurrentUtility = getUtility(mCurrentBid);

                        // 記録
                        mBidHistory.offer(sender, mCurrentBid, mCurrentUtility);
                } else if (action instanceof Accept) {
                        // 記録
                        mBidHistory.accept(sender, mCurrentBid);
                }
        }

        /**
         * 次に自分が出す bid を生成する
         * 
         * @return
         */
        protected Bid generateNextBid(double time) {
                Bid bid;

                bid = mBidHelper.generateFromRelativeUtilitySearch(1.0 * time);
                if (bid == null) {
                        bid = mBidHelper.generateFromHistory(1.0 * time);
                }
                if (bid == null) {
                        bid = generateRandomBid();
                }

                return bid;
        }

        @Override
        public String getDescription() {
                return "ANAC2015";
        }

}