C++ item::getWeight方法代码示例

void inventory::addWeightAndCount(itemNode* node, const item& newItem) {
    if(newItem.getWeight() == node->getWeight()) {
        node->incrementCount();
        _weight += newItem.getWeight();
        _count++;
        newItem.printSuccess();
    }

    else {
        std::cout << "ERROR: tried to add a duplicate item "
                  << "with wrong weight!\n";
    }
    return;
}

void inventory::AddItem(const item& newItem) {
    // We start by checking the weight to see if it will overload us.
    // If so, we don't do anything and can immediately return.

    if(newItem.getWeight() + _weight > _maxWeight) {
        newItem.printFailure();
        return;
    }

    itemNode *newNode = new itemNode;
    
    if(newNode) {
        newNode->setItem(newItem);
        itemNode *currentNode = _head;
        itemNode *previousNode = NULL;

        // Go to the first node that is greater than newItem.
        // previousNode will either be NULL, (in which case it's
        // at the head of the list) equal to newItem,
        // (in which case it will be incremented)
        // or less than newItem (in which case newNode will be
        // put between previousNode and currentNode).

        while(currentNode && newItem >= currentNode->getItem()) {
            previousNode = currentNode;
            currentNode = currentNode->getNext();
        }

        if(previousNode == NULL) {
            newNode->setNext(_head);
            _head = newNode;
            addWeightAndCount(newNode, newItem);
        }

        else if(newItem == previousNode->getItem()) {
            addWeightAndCount(previousNode, newItem);
            delete newNode;
        }

        else {
            previousNode->setNext(newNode);
            newNode->setNext(currentNode);
            addWeightAndCount(newNode, newItem);
        }
    }

    return;
}

//Adds the weight of aItem to the inventory's total weight
//Returns whether or not it succeeded.
bool inventory::incWeight(const item& aItem)
{
    //If the new items weight added to the inventory total weight exceeds the
    //MAX_WEIGHT value, return a failure.
    double item_weight = aItem.getWeight();
    if((item_weight + weight) > MAX_WEIGHT)
    {
        cout << "You're not strong enough to pick up the " << aItem << " with everything else you're carrying." << endl;
        return false;
    }
    else
    {
        cout << "You picked up a " << aItem << "." << endl;
        weight+=item_weight;
        return true;
    }

}

void inventory::subtractWeightAndCount(const item& newItem) {
    _weight -= newItem.getWeight();
    _count--;
}