source: src/main/java/parties/simplemediator/FeedbackParty.java@ 127

package parties.simplemediator;

import java.util.List;

import genius.core.AgentID;
import genius.core.Bid;
import genius.core.Feedback;
import genius.core.Vote;
import genius.core.actions.Action;
import genius.core.actions.DefaultAction;
import genius.core.actions.GiveFeedback;
import genius.core.actions.InformVotingResult;
import genius.core.actions.OfferForFeedback;
import genius.core.actions.OfferForVoting;
import genius.core.actions.VoteForOfferAcceptance;
import genius.core.parties.AbstractNegotiationParty;
import genius.core.protocol.DefaultMultilateralProtocol;
import genius.core.protocol.SimpleMediatorBasedProtocol;
import genius.core.timeline.Timeline.Type;

public class FeedbackParty extends AbstractNegotiationParty {

        private double lastBidUtility;
        private double lastAcceptedUtility;
        private double currentBidUtility;
        private Feedback currentFeedback;
        private Vote currentVote;
        private boolean voteTime;

        public FeedbackParty() {
                super();
                lastBidUtility = 0.0;
                lastAcceptedUtility = 0.0;
                currentBidUtility = 0.0;
                currentFeedback = Feedback.SAME;
                voteTime = false;
        }

        @Override
        public void receiveMessage(AgentID sender, Action opponentAction) {

                if (opponentAction instanceof InformVotingResult) {

                        if (((InformVotingResult) opponentAction).getVotingResult() == Vote.ACCEPT) // update
                                                                                                                                                                                // the
                                                                                                                                                                                // utility
                                                                                                                                                                                // of
                                                                                                                                                                                // last
                                                                                                                                                                                // accepted
                                                                                                                                                                                // bid
                                                                                                                                                                                // by
                                                                                                                                                                                // all
                                lastAcceptedUtility = currentBidUtility;
                        return;
                }

                Bid receivedBid = DefaultAction.getBidFromAction(opponentAction);
                if (receivedBid == null)
                        return;

                if (getTimeLine().getType() == Type.Time)
                        currentBidUtility = getUtilityWithDiscount(receivedBid);
                else
                        currentBidUtility = getUtility(receivedBid);

                if (opponentAction instanceof OfferForFeedback) {
                        currentFeedback = Feedback.madeupFeedback(lastBidUtility, currentBidUtility);
                        voteTime = false;
                }
                if (opponentAction instanceof OfferForVoting) {
                        voteTime = true;
                        if (lastAcceptedUtility <= currentBidUtility)
                                currentVote = Vote.ACCEPT;
                        else
                                currentVote = Vote.REJECT;
                }

                lastBidUtility = currentBidUtility;

        }

        @Override
        public Action chooseAction(List<Class<? extends Action>> validActions) {

                if (voteTime)
                        return (new VoteForOfferAcceptance(getPartyId(), currentVote));
                else
                        return (new GiveFeedback(getPartyId(), currentFeedback));

        }

        @Override
        public Class<? extends DefaultMultilateralProtocol> getProtocol() {
                return SimpleMediatorBasedProtocol.class;
        }

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

}