/**
* This method is called whenever two agents agree on an exchange. It can be called by the market
* or the agents themselves.
*
* @param buyer the buyer
* @param seller the seller
* @param good the good being exchanged
* @param price the price
*/
public PurchaseResult trade(
EconomicAgent buyer,
EconomicAgent seller,
Good good,
int price,
Quote buyerQuote,
Quote sellerQuote) {
Preconditions.checkArgument(buyer != seller, "buyer and seller are the same person!");
assert getBuyers().contains(buyer) : buyer.toString() + " ----- " + buyers;
assert getSellers().contains(seller);
double sellerCost =
good.getLastValidPrice(); // record the price of the good BEFORE it is traded, so we can
// learn its markup
PurchaseResult result = policy.trade(buyer, seller, good, price, buyerQuote, sellerQuote, this);
if (result == PurchaseResult.SUCCESS) {
// record
lastPrice = price;
lastMarkup = (price - sellerCost) / sellerCost;
todaySumOfClosingPrices += price;
lastFilledAsk = sellerQuote.getPriceQuoted();
lastFilledBid = buyerQuote.getPriceQuoted();
weeklyVolume++;
todayVolume++;
// tell the listeners!
for (TradeListener tl : tradeListeners)
tl.tradeEvent(buyer, seller, good, price, sellerQuote, buyerQuote);
// if there is GUI tell the records
if (MacroII.hasGUI()) {
// record it on the timeline
// todo logtodo
// register it on the network!
registerTradeOnNetwork(seller, buyer, good.getType(), 1);
}
}
return result;
}
/**
* Called by a buyer that wants to buy directly from this agent, not going through the market.
*
* @param buyerQuote the quote (including the offer price) of the buyer
* @param sellerQuote the quote (including the offer price) of the seller; I expect the buyer to
* have achieved this through asked for an offer function
* @return a purchaseResult including whether the trade was succesful and if so the final price
*/
@Override
public PurchaseResult shopHere(Quote buyerQuote, Quote sellerQuote) {
int finalPrice = market.price(sellerQuote.getPriceQuoted(), buyerQuote.getPriceQuoted());
assert sellerQuote.getGood() != null;
assert this.has(sellerQuote.getGood());
// exchange hostages
market.trade(
buyerQuote.getAgent(), this, sellerQuote.getGood(), finalPrice, buyerQuote, sellerQuote);
this.logEvent(
this,
MarketEvents.SOLD,
this.getModel().getCurrentSimulationTimeInMillis(),
"price: " + finalPrice + ", through buyFromHere()"); // sold a good
assert !this.has(sellerQuote.getGood());
PurchaseResult toReturn = PurchaseResult.SUCCESS;
toReturn.setPriceTrade(finalPrice);
return toReturn;
}
/**
* A buyer asks the sales department for the price they are willing to sell one of their good.
*
* @param buyer the economic agent that asks you that
* @return a price quoted or -1 if there are no quotes
*/
@Override
public Quote askedForASaleQuote(EconomicAgent buyer, GoodType type) {
Good good = peekGood(type);
if (good != null) return Quote.newSellerQuote(this, saleQuote, good);
else return Quote.emptySellQuote(null);
}