public int getAvailableTotalPrice() {
if (number_units == 0 || unit.getPrice() == 0) return 0;
int amount = castle.getOwner().gold / unit.getPrice();
if (amount < number_units) return amount * unit.getPrice();
else return number_units * unit.getPrice();
}
/**
* Buy 'x' number of units and add it to castle army
*
* @param amount number of units to buy
*/
public void buy(int amount) {
if (canBuy(amount)) {
castle.getOwner().gold -= amount * unit.getPrice();
number_units -= amount;
castle.addUnitToArmy(unit, amount);
}
}
public void buyAll() {
int amount = castle.getOwner().gold / unit.getPrice();
if (amount >= number_units) buy(number_units);
else buy(amount);
}
/**
* Check if player can buy a certain number of this units
*
* @param amount number of units that player want to buy
*/
public boolean canBuy(int amount) {
int price = amount * unit.getPrice();
return number_units >= amount && castle.getOwner().gold >= price;
}