/**
* Price some goods according to the amount present in the settlement.
*
* @param type The type of goods for sale.
* @param amount The amount of goods for sale.
* @return A price for the goods.
*/
private int getNormalGoodsPriceToBuy(GoodsType type, int amount) {
final int tradeGoodsAdd = 20; // Fake additional trade goods present
final int capacity = getGoodsCapacity();
int current = getGoodsCount(type);
// Increase effective stock if its raw material is produced here.
GoodsType rawType = type.getInputType();
if (rawType != null) {
int rawProduction = getMaximumProduction(rawType);
int add =
(rawProduction < 5)
? 10 * rawProduction
: (rawProduction < 10)
? 5 * rawProduction + 25
: (rawProduction < 20) ? 2 * rawProduction + 55 : 100;
// Decrease bonus in proportion to current stock, up to capacity.
add = add * Math.max(0, capacity - current) / capacity;
current += add;
} else if (type.isTradeGoods()) {
// Small artificial increase of the trade goods stored.
current += tradeGoodsAdd;
}
// Only interested in the amount of goods that keeps the
// total under the threshold.
int retain = Math.min(getWantedGoodsAmount(type), capacity);
int valued = (retain <= current) ? 0 : Math.min(amount, retain - current);
// Unit price then is maximum price plus the bonus for the
// settlement type, reduced by the proportion of goods present.
int unitPrice =
(GOODS_BASE_PRICE + getType().getTradeBonus()) * Math.max(0, capacity - current) / capacity;
// But farmed goods are always less interesting.
// and small settlements are not interested in building.
if (type.isFarmed() || type.isRawBuildingMaterial()) unitPrice /= 2;
// Only pay for the portion that is valued.
return (unitPrice < 0) ? 0 : valued * unitPrice;
}
