public Action chooseAction() {
Action lAction = null;
ACTIONTYPE lActionType;
Bid lOppntBid = null;
lActionType = getActionType(messageOpponent);
switch (lActionType) {
case OFFER: // Offer received from opponent
lOppntBid = ((Offer) messageOpponent).getBid();
if (myLastAction == null)
// Other agent started, lets propose my initial bid.
lAction = proposeInitialBid();
else {
try {
if (utilitySpace.getUtility(lOppntBid)
>= (utilitySpace.getUtility(myLastBid)) - UTIlITYGAPSIZE)
// Opponent bids equally, or outbids my previous bid, so lets accept.
lAction = new Accept(getAgentID());
else
// Propose counteroffer. Get next bid.
try {
lAction = proposeNextBid(lOppntBid);
} catch (Exception e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case ACCEPT: // Presumably, opponent accepted last bid, but let's check...
case BREAKOFF:
// nothing left to do. Negotiation ended, which should be checked by
// Negotiator...
break;
default:
// I am starting, but not sure whether Negotiator checks this, so
// lets check also myLastAction...
if (myLastAction == null) lAction = proposeInitialBid();
else
// simply repeat last action
lAction = myLastAction;
break;
}
myLastAction = lAction;
return lAction;
}
private Action proposeInitialBid() {
Bid lBid = null;
// Return (one of the) possible bid(s) with maximal utility.
try {
lBid = utilitySpace.getMaxUtilityBid();
} catch (Exception e) {
e.printStackTrace();
}
myLastBid = lBid;
return new Offer(getAgentID(), lBid);
}