source: src/main/java/agents/ai2014/group1/Group1.java@ 61

package agents.ai2014.group1;

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

import agents.anac.y2010.Yushu.Utility;
import agents.anac.y2011.IAMhaggler2011.RandomBidCreator;
import agents.anac.y2012.MetaAgent.agents.MrFriendly.OpponentModel;
import genius.core.AgentID;
import genius.core.Bid;
import genius.core.DeadlineType;
import genius.core.actions.Accept;
import genius.core.actions.Action;
import genius.core.actions.Offer;
import genius.core.issue.Issue;
import genius.core.parties.AbstractNegotiationParty;
import genius.core.parties.NegotiationInfo;
import genius.core.utility.AdditiveUtilitySpace;

/**
 * This is your negotiation party.
 */
public class Group1 extends AbstractNegotiationParty {

        private Bid bid;
        private List<String> opponents = new ArrayList<String>();

        private int totalRounds = 0;
        private int currentRound = 0;

        private Bid myLastBid;

        private List<String> myOpponents = new ArrayList<String>();
        private HashMap<String, OpponentModel> opponentModels = new HashMap<String, OpponentModel>();
        private List<Issue> issueList = new ArrayList<Issue>();

        private RandomBidCreator rbc = new RandomBidCreator();

        @Override
        public void init(NegotiationInfo info) {
                super.init(info);

                // initialize issueList
                issueList = this.utilitySpace.getDomain().getIssues();
        }

        /**
         * 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) {
                totalRounds = getDeadlines().getType() == DeadlineType.ROUND ? getDeadlines().getValue() : 0;
                // System.out.println("totalRounds: " + totalRounds);
                currentRound++;
                // System.out.println("agentID: " + getPartyId().toString() +
                // "currentRound: " + currentRound);
                int roundsToGo = totalRounds - currentRound;
                double threshold = 1.0;
                Bid myBid;
                double currentUtility = getUtility(bid);

                // Depending on the deadline, adjust the threshold.
                if ((double) roundsToGo > 0.5 * totalRounds) {
                        threshold = 0.95;
                } else if ((double) roundsToGo > 0.3 * totalRounds) {
                        threshold = 0.9;
                } else if (roundsToGo > 3) {
                        threshold = 0.80;
                } else {
                        threshold = 0.6;
                }

                if (currentUtility > threshold) {
                        return new Accept(getPartyId(), bid);
                } else { // generate bid taking others'utilities into account
                                        // generate a bid with high utility for me if it's my first
                                        // bid
                                        // otherwise, take my last bid as base for my new bid
                        double newUtility = 0;
                        if (myLastBid != null) {
                                Bid tempBid;
                                boolean allOpponentsUtilHigh;
                                double oppThreshold = threshold - 0.2;
                                int counter = 0;
                                do {
                                        if (counter == 100) {
                                                oppThreshold -= 0.05;
                                                counter = 0;
                                        }
                                        tempBid = rbc.getBid(((AdditiveUtilitySpace) utilitySpace), threshold - 0.05, threshold + 0.05);
                                        newUtility = getUtility(tempBid);
                                        allOpponentsUtilHigh = checkUtils(oppThreshold, tempBid);
                                        counter++;
                                } while ((newUtility < threshold - 0.05 && !allOpponentsUtilHigh));
                                myBid = tempBid;
                                // System.out.println("Bid generated: " + myBid.toString() +
                                // " || utility : " + getUtility(myBid));
                        }
                        // first round
                        else {
                                try {
                                        myBid = Utility.getRandomBid(((AdditiveUtilitySpace) utilitySpace));
                                } catch (Exception e1) {
                                        do {
                                                myBid = generateRandomBid();
                                        } while ((newUtility < 0.9));
                                        e1.printStackTrace();
                                }
                                newUtility = getUtility(myBid);
                        }
                }
                myLastBid = myBid;
                return new Offer(getPartyId(), myBid);
        }

        /**
         * 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) {
                // First check if the opponent is new or not
                // If so, create a new opponent model for that opponent
                if (!myOpponents.contains(sender.toString())) {
                        myOpponents.add(sender.toString());
                        addOpponentModel(sender.toString());
                }

                // Check if the message received is a bid or an accept
                if (action.toString() == "(Accept)") {
                        // Do nothing.
                } else if (action instanceof Offer) {
                        // Get bid.
                        bid = ((Offer) action).getBid();

                        // if the corresponding opponentModel should exist and the current
                        // bid can be added
                        if (opponentModels.containsKey(sender)) {
                                opponentModels.get(sender).addOpponentBid(bid);
                        }
                }
        }

        private void addOpponentModel(String opponent) {
                if (issueList != null && !opponentModels.containsKey(opponent)) {
                        opponentModels.put(opponent, new OpponentModel(issueList, 1, timeline));
                }
        }

        private boolean checkUtils(double threshold, Bid bid) {
                for (String opponent : opponents) {
                        OpponentModel oppModel = opponentModels.get(opponent);
                        if (oppModel.getEstimatedUtility(bid) <= threshold) {
                                return false;
                        }
                }
                return true;
        }

        protected AgentID partyId = new AgentID("Group 1");

        @Override
        public String getDescription() {
                return "ai2014 group1";
        }

}