source: src/main/java/agents/anac/y2010/AgentSmith/AgentSmith.java

package agents.anac.y2010.AgentSmith;

import genius.core.Agent;
import genius.core.Bid;
import genius.core.SupportedNegotiationSetting;
import genius.core.actions.Accept;
import genius.core.actions.Action;
import genius.core.actions.Offer;
import genius.core.utility.AdditiveUtilitySpace;

/**
 * ANAC2010 competitor Agent Smith.
 */
public class AgentSmith extends Agent {
        private PreferenceProfileManager fPreferenceProfile;
        private ABidStrategy fBidStrategy;
        private BidHistory fBidHistory;

        // Some possible requirements for the bayes agent

        // private ArrayList<Bid> ourPreviousBids;

        private boolean firstRound = true;
        private double sMargin = 0.9;

        /**
         * The version of this agent
         * 
         * @return
         */
        @Override
        public String getVersion() {
                return "3"; //
        }

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

        /**
         * The agent will be initialized here.
         */
        @Override
        public void init() {

                fBidHistory = new BidHistory();
                fPreferenceProfile = new PreferenceProfileManager(fBidHistory,
                                (AdditiveUtilitySpace) this.utilitySpace);
                fBidStrategy = new SmithBidStrategy(fBidHistory,
                                (AdditiveUtilitySpace) this.utilitySpace, fPreferenceProfile,
                                getAgentID());
        }

        /**
         * This is called when a action was done, by the other agent.
         */
        @Override
        public void ReceiveMessage(Action pAction) {
                /*
                 * Leaving it for now, to prevent it from breaking but it can be
                 * replaced with:
                 */

                if (pAction == null)
                        return;

                if (pAction instanceof Offer) {
                        Bid lBid = ((Offer) pAction).getBid();

                        fBidHistory.addOpponentBid(lBid);
                        fPreferenceProfile.addBid(lBid);
                }

        }

        /**
         * When we take turn, this function is invoked.
         */
        @Override
        public Action chooseAction() {
                Bid currentBid = null;
                Action currentAction = null;
                try {
                        if (fBidHistory.getOpponentLastBid() != null && utilitySpace
                                        .getUtility(fBidHistory.getOpponentLastBid()) > sMargin) {
                                // bid higher then margin
                                currentAction = new Accept(getAgentID(),
                                                fBidHistory.getOpponentLastBid());
                        } else {
                                // start with the highest bid
                                if (firstRound && (fBidHistory.getMyLastBid() == null)) {
                                        firstRound = !firstRound;
                                        currentBid = getInitialBid();
                                        currentAction = new Offer(getAgentID(), currentBid);
                                        Bid lBid = ((Offer) currentAction).getBid();
                                        fBidHistory.addMyBid(lBid);

                                } else {

                                        // the utility of the opponents' bid is higher then ours ->
                                        // accept!
                                        double utilOpponent = this.utilitySpace
                                                        .getUtility(fBidHistory.getOpponentLastBid());
                                        double utilOur = this.utilitySpace
                                                        .getUtility(fBidHistory.getMyLastBid());
                                        if (utilOpponent >= utilOur) {
                                                currentAction = new Accept(getAgentID(),
                                                                fBidHistory.getOpponentLastBid());
                                        } else {
                                                // should be rewritten into something else...
                                                currentAction = fBidStrategy
                                                                .getNextAction(timeline.getTime());
                                                if (currentAction instanceof Offer) {
                                                        Bid lBid = ((Offer) currentAction).getBid();
                                                        fBidHistory.addMyBid(lBid);
                                                }
                                        }
                                }
                        }
                } catch (Exception e) {
                        e.printStackTrace();
                }

                return currentAction;
        }

        /*
         * Get the initial bid, with the highest utility
         */
        private Bid getInitialBid() throws Exception {
                return this.utilitySpace.getMaxUtilityBid();
        }

        @Override
        public SupportedNegotiationSetting getSupportedNegotiationSetting() {
                return SupportedNegotiationSetting.getLinearUtilitySpaceInstance();
        }

        @Override
        public String getDescription() {
                return "ANAC2010";
        }

}