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#include <iostream>
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#include <string>
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using std::cout, std::string, std::endl;
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class Player
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{
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public: // 放了方便后续代码编写，暂时将基类数据设定为公有
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string name;
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int attack, defence, HP; // 进攻 防御 生命
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public:
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Player(string _name, int _attack, int _defence, int _HP)
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: name{_name}, attack{_attack}, defence{_defence}, HP{_HP}
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{
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}
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void pk(Player &p)
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{
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while (HP > 0)
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{
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hit(p);
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if (p.HP <= 0)
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{
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std::cout << p.name << "死亡！\n";
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return;
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}
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p.hit(*this);
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}
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std::cout << name << "死亡！\n";
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}
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virtual void hit(Player &p) // 设定虚函数的接口
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{
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}
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};
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class Demon : public Player
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{
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public:
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using Player::Player;
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void hit(Player &p)
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{
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p.HP -= attack - p.defence;
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HP += attack - p.defence;
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std::cout << name << "砍了" << p.name << "一刀，并吸了一口血\n";
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}
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};
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class Angel : public Player
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{
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public:
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using Player::Player;
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void hit(Player &p)
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{
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p.HP -= attack - p.defence;
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p.HP -= attack - p.defence;
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std::cout << name << "砍了" << p.name << "两刀\n";
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}
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};
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class Ghost : public Player
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{
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public:
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using Player::Player;
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virtual void hit(Player &p)
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{
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p.HP -= (attack - p.defence) * 1.5;
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HP += (attack - p.defence) * 0.5;
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std::cout << name << "砍了" << p.name << "一大刀，并吸了一小口血\n";
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}
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};
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int main()
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{
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Angel a{"孙悟空", 100, 20, 1000};
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Demon d{"牛魔王", 100, 20, 1000};
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Ghost g{"白骨精", 100, 20, 1000};
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a.pk(d);
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// 改成a.pk(g)试试不同？
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// 在本例当中，无论从Player派生出多少新的类，
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// 只要遵守虚函数的规定，在pk函数中都可以通过各自对象来调用各自的hit方法，
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// 充分体现了动态多态性的魅力
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} |
