School_OOP/Belt.cpp at master · DavidNovak1521/School_OOP · GitHub

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#include "Belt.hpp"

Belt::Belt() : potions(nullptr) {}

Belt::~Belt() { clear(); }

int Belt::count() const
{
    int count = 0;
    for (BeltItem *tmp = potions; tmp != nullptr; tmp = tmp->next)
        count++;
    return count;
}

void Belt::put(const HealthPotion &potion)
{
    potions = new BeltItem{potion, potions};
}

const HealthPotion &Belt::watch(int index) const
{
    checkIndex(index);
    BeltItem *tmp;
    for (tmp = potions; index > 0; --index)
        tmp = tmp->next;
    return tmp->potion;
}

HealthPotion Belt::get(int index)
{
    checkIndex(index);
    BeltItem **tmp;
    for (tmp = &potions; index > 0; --index)
        tmp = &((*tmp)->next);
    HealthPotion toReturn = (*tmp)->potion;
    BeltItem *toDelete = (*tmp);
    (*tmp) = (*tmp)->next;
    delete toDelete;
    return toReturn;
}

void Belt::clear()
{
    while (count() > 0)
        get(0);
}

void Belt::checkIndex(int index) const
{
    if (index < 0 || index >= count())
        throw WrongIndexException();
}