c++ - 具有继承类和函数的抽象类写入单独的 vector c++

Question

纸牌游戏；我正在为持有卡片的“手”使用抽象类。 “手”需要略有不同，但它们共享大部分功能。所以有一个 Hand 和一个 MasterHand，它将继承 Hand 并具有附加功能。一切都通过发牌的牌组进行。我的目标是以一种允许写入被调用的抽象类实例的 handV 的方式在 Hand 类中制定函数 - 无论它是 MasterHand 的 Hand ..我尝试了不同的方法但无法制作他们中的任何一个都有效。

class AbstractClass
{
    virtual ~AbstractClass(){}        
    virtual void getCard(Card::card)=0 ;

};

class Hand:public AbstractClass
 {
 public: 
    vector<Card::card> handV;
    virtual void getCard(Card::card k) override
    {
        writeIntoVector(k);
    }
    void writeIntoArray(Card::card g)
    {
        handV.push_back(g);
    }
};
class HandMaster:public Hand
{
    public: 
    vector<Card::card> handV;
// now here I would like to use the functions from Hand, but make them write into HandMaster.handV rather than Hand.handV
};

class Deck
{
    void passCard(AbstractBase &x)
    {
        x.getCard(deck.back());
    }
};

int main
{
    AbstractBase* k=&h;
    Hand* p = static_cast<Hand*>(k);  // so I was trying to do it via casting in different convoluted ways but failed
    MasterHand h2;
    AbstractBase* m=&h2;
    d.passCard(*k); // here I'd like the card to be passed to Hand.handV
    d.passCard(*m); // here I'd like the card to be passed to MasterHand.handV
}

Answer 1

我添加并简化了一些代码。但我会向您指出一些关于多态性的资源，以帮助您入门。我还完全删除了 AbstractClass，因为从 OOP 的角度来看，您有 Hands 对象和另一个 Master hand 对象。

https://www.tutorialspoint.com/cplusplus/cpp_polymorphism.htm

#include <vector>
#include <iostream>
//dummy class
struct Card{
    int x; 
};

class Hand{
 public: 
    Hand(){}
    std::vector<Card> handV;
    virtual ~Hand(){}        
    virtual void getCard(Card k) 
    {
        handV.push_back(k);
    }
    virtual void showHand() 
    {
        for(std::vector<Card>::const_iterator it = handV.begin(); 
            it != handV.end(); 
            it++) 
        std::cout << it->x << " ";
    }
};
class HandMaster: public Hand
{
    public:
    HandMaster(){} 
    //add additional methods
};

class HandOther: public Hand
{
    public:
    HandOther(){} 
    //add additional methods
};

class Deck
{
public:
    std::vector<Card> deck;
    Deck(){
        Card c;
        for(int i = 1; i <= 52; ++i){
            c.x = i; 
            deck.push_back(c);
        }
    }
    void passCard(Hand *x)
    {
        x->getCard(deck.back());
        deck.pop_back();
    }
};

int main()
{
    Deck d;
    Hand* p = new Hand();
    HandMaster *m = new HandMaster();
    HandOther * o = new HandOther();
    for(int i =0; i < 5; ++i){
        d.passCard(p); 
        d.passCard(m); 
        d.passCard(o); 
    }
    std::cout << "\nHand:";
    p->showHand();
    std::cout << "\nHandMaster:";
    m->showHand();
    std::cout << "\nHandOther:";
    o->showHand();

    std::cout << "\n";
    delete o;
    delete p;
    delete m;
}