bool Game::removeMoney(Cylinder* cylinder, uint64_t money, uint32_t flags /*= 0*/)
{
	if (cylinder == nullptr) {
		return false;
	}

	if (money <= 0) {
		return true;
	}

	std::vector<Container*> containers;

	typedef std::multimap<uint64_t, Item*, std::less<uint64_t>> MoneyMap;
	typedef MoneyMap::value_type moneymap_pair;
	MoneyMap moneyMap;
	uint64_t moneyCount = 0;

	for (int32_t i = cylinder->getFirstIndex(), j = cylinder->getLastIndex(); i < j; ++i) {
		Thing* thing = cylinder->getThing(i);
		if (!thing) {
			continue;
		}

		Item* item = thing->getItem();
		if (!item) {
			continue;
		}

		Container* container = item->getContainer();
		if (container) {
			containers.push_back(container);
		} else if (item->getWorth() != 0) {
			moneyCount += item->getWorth();
			moneyMap.insert(moneymap_pair(item->getWorth(), item));
		}
	}

	size_t i = 0;
	while (i < containers.size()) {
		Container* container = containers[i++];
		for (Item* item : container->getItemList()) {
			Container* tmpContainer = item->getContainer();
			if (tmpContainer) {
				containers.push_back(tmpContainer);
			} else if (item->getWorth() != 0) {
				moneyCount += item->getWorth();
				moneyMap.insert(moneymap_pair(item->getWorth(), item));
			}
		}
	}

	/*not enough money*/
	if (moneyCount < money) {
		return false;
	}

	for (MoneyMap::const_iterator mit = moneyMap.begin(), mend = moneyMap.end(); mit != mend && money > 0; ++mit) {
		Item* item = mit->second;
		internalRemoveItem(item);

		if (mit->first > money) {
			/* Remove a monetary value from an item*/
			uint64_t remaind = item->getWorth() - money;
			addMoney(cylinder, remaind, flags);
			money = 0;
		} else {
			money -= mit->first;
		}
	}

	return money == 0;
}