bool FruitBox::putFruit(Fruit *f) {

    if (this->nbFruit >= this->size)
        return false;

    if (this->list == NULL) {
        this->list = new FruitNode();
        this->list->fruit = f;
        this->list->next = NULL;
        this->nbFruit++;
        return true;
    }

    FruitNode* tmp = this->list;
    FruitNode* elem = new FruitNode();

    while (tmp->next != NULL) {
        if (tmp->fruit == f)
            return false;
        tmp = tmp->next;
    }

    elem->fruit = f;
    elem->next = NULL;
    tmp->next = elem;
    this->nbFruit++;
    return true;
}

Fruit *FruitBox::pickFruit() {
    Fruit *f;

    if (this->list) {
        f = this->list->fruit;
        this->list = this->list->next;
    } else f = 0;
    this->nbFruit--;
    return f;
}