/**
* Calculates how much of the given goods type this settlement wants and should retain.
*
* @param type The <code>GoodsType</code>.
* @return The amount of goods wanted.
*/
protected int getWantedGoodsAmount(GoodsType type) {
if (getUnitCount() <= 0) return 0;
final Specification spec = getSpecification();
final UnitType unitType = getFirstUnit().getType();
final Role militaryRole =
Role.getAvailableRoles(getOwner(), unitType, spec.getMilitaryRoles()).get(0);
if (type.isMilitaryGoods()) {
// Retain enough goods to fully arm.
int need = 0;
for (Unit u : ownedUnits) {
if (u.getRole() == militaryRole) continue;
List<AbstractGoods> required = u.getGoodsDifference(militaryRole, 1);
need += AbstractGoods.getCount(type, required);
}
return need;
}
int consumption = getConsumptionOf(type);
if (type == spec.getPrimaryFoodType()) {
// Food is perishable, do not try to retain that much
return Math.max(40, consumption * 3);
}
if (type.isTradeGoods() || type.isNewWorldLuxuryType() || type.isRefined()) {
// Aim for 10 years supply, resupply is doubtful
return Math.max(80, consumption * 20);
}
// Just keep some around
return 2 * getUnitCount();
}
/**
* Gets the amount of gold this <code>IndianSettlment</code> is willing to pay for the given
* <code>Goods</code>.
*
* <p>It is only meaningful to call this method from the server, since the settlement's {@link
* GoodsContainer} is hidden from the clients. The AI uses it though so it stays here for now.
* Note that it takes no account of whether the native player actually has the gold.
*
* <p>FIXME: this is rancid with magic numbers.
*
* @param type The type of <code>Goods</code> to price.
* @param amount The amount of <code>Goods</code> to price.
* @return The price.
*/
public int getPriceToBuy(GoodsType type, int amount) {
if (amount > GoodsContainer.CARGO_SIZE) {
throw new IllegalArgumentException("Amount > " + GoodsContainer.CARGO_SIZE);
}
int price = 0;
if (type.isMilitaryGoods()) {
// Might return zero if a surplus is present
price = getMilitaryGoodsPriceToBuy(type, amount);
}
if (price == 0) {
price = getNormalGoodsPriceToBuy(type, amount);
}
// Apply wanted bonus
final int wantedBase = 100; // Granularity for wanted bonus
final int wantedBonus // Premium paid for wanted goods types
=
(type == wantedGoods[0])
? 150
: (type == wantedGoods[1]) ? 125 : (type == wantedGoods[2]) ? 110 : 100;
// Do not simplify with *=, we want the integer truncation.
price = wantedBonus * price / wantedBase;
logger.finest("Full price(" + amount + " " + type + ")" + " -> " + price);
return price;
}
/**
* Gets the amount of gold this <code>IndianSettlment</code> is willing to sell the given <code>
* Goods</code> for.
*
* <p>It is only meaningful to call this method from the server, since the settlement's {@link
* GoodsContainer} is hidden from the clients.
*
* @param type The type of <code>Goods</code> to price.
* @param amount The amount of <code>Goods</code> to price.
* @return The price.
*/
public int getPriceToSell(GoodsType type, int amount) {
if (amount > GoodsContainer.CARGO_SIZE) {
throw new IllegalArgumentException("Amount > " + GoodsContainer.CARGO_SIZE);
}
final int full = GOODS_BASE_PRICE + getType().getTradeBonus();
// Base price is purchase price plus delta.
// - military goods at double value
// - trade goods at +50%
int price = amount + Math.max(0, 11 * getPriceToBuy(type, amount) / 10);
if (type.isMilitaryGoods()) {
price = Math.max(price, amount * full * 2);
} else if (type.isTradeGoods()) {
price = Math.max(price, 150 * amount * full / 100);
}
return price;
}
/**
* Updates the goods wanted by this settlement.
*
* <p>It is only meaningful to call this method from the server, since the settlement's {@link
* GoodsContainer} is hidden from the clients.
*/
public void updateWantedGoods() {
final Specification spec = getSpecification();
final java.util.Map<GoodsType, Integer> prices = new HashMap<>();
for (GoodsType gt : spec.getGoodsTypeList()) {
// The natives do not trade military or non-storable goods.
if (gt.isMilitaryGoods() || !gt.isStorable()) continue;
prices.put(gt, getNormalGoodsPriceToBuy(gt, GoodsContainer.CARGO_SIZE));
}
int wantedIndex = 0;
for (Entry<GoodsType, Integer> e : mapEntriesByValue(prices, descendingIntegerComparator)) {
GoodsType goodsType = e.getKey();
if (e.getValue() <= GoodsContainer.CARGO_SIZE * TRADE_MINIMUM_PRICE
|| wantedIndex >= wantedGoods.length) break;
wantedGoods[wantedIndex] = goodsType;
wantedIndex++;
}
for (; wantedIndex < wantedGoods.length; wantedIndex++) {
wantedGoods[wantedIndex] = null;
}
}
