source: src/main/java/negotiator/parties/RandomFiftyFiftyNegotiationParty.java@ 52

package negotiator.parties;

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.actions.OfferForVoting;
import genius.core.actions.Reject;
import genius.core.parties.AbstractNegotiationParty;

/**
 * Basic voting implementation: this agent accepts and rejects offers with a 50%
 * chance.
 * <p/>
 * The class was created as part of a series of agents used to understand the
 * api better
 *
 * @author David Festen
 */
public class RandomFiftyFiftyNegotiationParty extends AbstractNegotiationParty {

        private Bid lastBid;

        /**
         * If placing offers: do random offer if voting: accept/reject with a 50%
         * chance on both
         *
         * @param possibleActions
         *            List of all actions possible.
         * @return The chosen action
         */
        @Override
        public Action chooseAction(List<Class<? extends Action>> possibleActions) {

                // if we are the first party, place offer.
                if (possibleActions.contains(OfferForVoting.class)) {
                        return new OfferForVoting(getPartyId(), generateRandomBid());
                }

                // else do 50/50 accept or reject
                return rand.nextBoolean() ? new Accept(getPartyId(), lastBid) : new Reject(getPartyId(), lastBid);
        }

        /**
         * Processes action messages received by a given sender.
         *
         * @param sender
         *            The initiator of the action
         * @param arguments
         *            The action performed
         */
        @Override
        public void receiveMessage(AgentID sender, Action action) {
                if (action instanceof Offer) {
                        lastBid = ((Offer) action).getBid();
                }
        }

        @Override
        public String getDescription() {
                return "Random Fifty-Fifty Party";
        }

}