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c++ 实现狼人游戏

news 2026/6/2 19:21:35

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角色有：村民，狼人，预言家，女巫，猎人（Uninitialized只用于默认构造函数）
法官呼叫“狼人/预言家/女巫/猎人”，相应角色进行回答
法官呼叫“村民”，全体角色回答

Hints

objA.on(objB)表示将objB作为objA的监听者（事件订阅者）
知识点：

观察者模式
类与类的关系：关联
C++ enum
类静态变量
One more step

将构造函数和初始化操作（Player();和void init(std::string name, Role role);）分离出来有何优缺点？
judge.hpp中const Player*能改为const Player&吗？为什么？
enum类型Role定义在Player类的public部分有何好处？
Role为什么定义成enum类型？定义成string数组合适吗？
kMaxCountOfPlayers为什么要作为类静态变量？如果类静态变量为double类型，还能在类定义中初始化吗？

代码实现

//main.cpp

#include "judge.hpp" #include "player.hpp" #include <cassert> #include <iostream> #include <string> using std::cin; void RunAllTests() { Judge judge; Player players[Judge::kMaxCountOfPlayers]; std::string name; Player::Role role; for (int i = 0; i < Judge::kMaxCountOfPlayers; ++i) { switch (i) { case 0: case 1: case 2: { role = Player::Villager; break; } case 3: case 4: case 5: { role = Player::Werewolf; break; } case 6: { role = Player::Seer; break; } case 7: { role = Player::Witch; break; } case 8: { role = Player::Hunter; break; } default: assert(false); } cin >> name; players[i].init(name, role); judge.on(&players[i]); } int role_index; cin >> role_index; judge.call(static_cast<Player::Role>(role_index)); } int main() { RunAllTests(); return 0; } /* Two probable tests: input0: Kathy Julie Kenneth Albert William Jack Lisa Carol Harold 2 output0: Calling: Werewolf Albert: Shh... I am a Werewolf. William: Shh... I am a Werewolf. Jack: Shh... I am a Werewolf. ========================================= input1: Lisa Albert Julie Harold Jack Carol William Kenneth Kathy 1 output1: Calling: Villager Lisa: I am the villager!! Albert: I am the villager!! Julie: I am the villager!! Harold: I am the villager!! Jack: I am the villager!! Carol: I am the villager!! William: I am the villager!! Kenneth: I am the villager!! Kathy: I am the villager!! */

//judge.hpp

#ifndef JUDGE_HPP_ #define JUDGE_HPP_ #include "player.hpp" class Judge { public: static const int kMaxCountOfPlayers = 9; Judge(); ~Judge(); void on(const Player* player); void call(Player::Role role); private: const Player* m_players[kMaxCountOfPlayers]; int m_players_count; }; #endif

//judge.cpp

#include <iostream> #include <string> #include "judge.hpp" #include "player.hpp" using namespace std; Judge::Judge() { m_players_count=0; } Judge::~Judge() { } void Judge::on(const Player* player) { m_players[m_players_count]=player; m_players_count++; } void Judge::call(Player::Role role) { if(role==Player::Werewolf) { cout << "Calling: Werewolf"<< endl; } else if(role==Player::Villager) { cout << "Calling: Villager"<< endl; } else if(role==Player::Seer){ cout << "Calling: Seer"<< endl; } else if(role==Player::Witch) { cout << "Calling: Witch"<< endl; } else if(role==Player::Hunter) { cout << "Calling: Hunter"<< endl; } if(role==Player::Villager) { for(int i=0;i<m_players_count;i++) { m_players[i]->pretend(); } return; } for(int i=0;i<m_players_count;i++) { if(role==m_players[i]->role()) { m_players[i]->answer(); } } }

//play.hpp

#ifndef PLAYER_HPP_ #define PLAYER_HPP_ #include <string> class Player { public: enum Role { Uninitialized, Villager, Werewolf, Seer, Witch, Hunter }; Player(); void init(std::string name, Role role); ~Player(); Role role() const; void answer() const; void pretend() const; private: Role m_role; std::string m_name; }; #endif

//player.cpp

#include <iostream> #include <string> #include "player.hpp" using namespace std; Player::Player() { m_role=Uninitialized; m_name=""; } void Player::init(string name, Role role) { m_name=name; m_role=role; } Player::~Player() { ; } Player::Role Player::role() const { return m_role; } void Player::answer() const { if(m_role==Werewolf) { cout << m_name << ": Shh... I am a Werewolf." << endl; } else if(m_role==Villager) { cout << m_name << ": Shh... I am the villager!!" << endl; } else if(m_role==Seer){ cout << m_name << ": Shh... I am a Seer." << endl; } else if(m_role==Witch) { cout << m_name << ": Shh... I am a Witch." << endl; } else if(m_role==Hunter) { cout << m_name << ": Shh... I am a Hunter." << endl; } } void Player::pretend() const { cout << m_name << ": I am the villager!!" << endl; }

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