public async Task NegotiatePrice(Equipment item)
{
int charm = Player.Attribute[Attributes.charm];
charm = Math.Min(charm, 80);
int maxAccept = (int)(item.Price(Data) * Math.Pow(charm, .7) / 11);
int offer = (int)((6 + Random.NextDouble()) * maxAccept / 14.0);
int choice = await MakeOffer(item, offer, false);
if (choice == 0)
{
await CompleteSale(item, offer);
return;
}
int ask = 0;
OfferWindow.SetOffer(offer, ask);
ask = await GetAskingPrice();
if (ask == 0)
{
await BuybackFormatter.SeeYouLater();
return;
}
if (ask < 1.5 * offer)
{
await CompleteSale(item, ask);
return;
}
int spread = maxAccept - offer;
if (ask > spread + maxAccept)
{
await ComeBackWhenSerious();
return;
}
spread = ask - offer;
double scale = maxAccept / (double)spread;
offer = (int)(offer + (1 + Random.NextDouble() * 5) * scale);
maxAccept = spread;
if (offer >= ask)
{
offer = ask - 1;
}
int lastAsk = ask;
do
{
bool finalOffer = false;
OfferWindow.RejectAskingPrice(ask, IsAskWayTooHigh(ask, offer, maxAccept));
choice = await MakeOffer(item, offer, finalOffer);
if (choice == 0)
{
await CompleteSale(item, offer);
return;
}
else if (finalOffer)
{
await MaybeDealLater();
return;
}
OfferWindow.SetOffer(offer, lastAsk);
ask = await GetAskingPrice();
if (ask == 0)
{
await MaybeDealLater();
return;
}
if (ask == lastAsk ||
(ask > lastAsk && Random.NextDouble() < 0.5))
{
await ComeBackWhenSerious();
return;
}
double diff = lastAsk - ask;
if (diff == 0)
{
diff = Random.NextDouble() * 3;
}
if (diff / maxAccept < 0.03)
{
diff /= 1.3;
}
lastAsk = ask;
spread = (int)(offer + diff / 1.2 + Random.NextDouble() * diff / 1.6);
if (spread > ask - 2 && Random.NextDouble() < .5)
{
await CompleteSale(item, ask);
return;
}
if (spread >= ask)
{
finalOffer = true;
}
else
{
offer = spread;
if (ask - offer < 3)
{
finalOffer = true;
}
if (offer <= 0)
{
await ComeBackWhenSerious();
return;
}
}
} while (true);
}
private void SetOfferText(TextWindow offerWind, int offer, int ask)
{
OfferWindow.SetOffer(offer, ask);
}