source: src/test/java/multipartyexample/Groupn.java@ 127

package multipartyexample;

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.parties.AbstractNegotiationParty;
import genius.core.parties.NegotiationInfo;

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

        private Bid lastReceivedBid = null;

        @Override
        public void init(NegotiationInfo info) {

                super.init(info);

                System.out.println("Discount Factor is " + getUtilitySpace().getDiscountFactor());
                System.out.println("Reservation Value is " + getUtilitySpace().getReservationValueUndiscounted());

                // if you need to initialize some variables, please initialize them
                // below

        }

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

                // with 50% chance, counter offer
                // if we are the first party, also offer.
                if (lastReceivedBid == null || !validActions.contains(Accept.class) || Math.random() > 0.5) {
                        return new Offer(getPartyId(), generateRandomBid());
                } else {
                        return new Accept(getPartyId(), lastReceivedBid);
                }
        }

        @Override
        public void receiveMessage(AgentID sender, Action action) {
                super.receiveMessage(sender, action);
                if (action instanceof Offer) {
                        lastReceivedBid = ((Offer) action).getBid();
                }
        }

        @Override
        public String getDescription() {
                return "example party group N";
        }

}