用c++写一个射击小游戏

好的，下面是一个简单的射击小游戏的代码示例：

#include <iostream>
#include <conio.h>
#include <Windows.h>
#include <vector>
#include <time.h>

using namespace std;

const int MapWidth = 20;
const int MapHeight = 20;

class Object {
protected:
    int x, y;
public:
    Object(int _x, int _y) :x(_x), y(_y) {}

    virtual void Draw(char map[MapHeight][MapWidth + 1]) const = 0;

    int GetX() const {
        return x;
    }

    int GetY() const {
        return y;
    }
};

class Player : public Object {
private:
    int direction; // 0:上，1:右，2:下，3:左
public:
    Player(int _x, int _y) :Object(_x, _y), direction(0) {}

    void Move() {
        switch (direction) {
        case 0: // 上
            if (y > 0) y--;
            break;
        case 1: // 右
            if (x < MapWidth - 1) x++;
            break;
        case 2: // 下
            if (y < MapHeight - 1) y++;
            break;
        case 3: // 左
            if (x > 0) x--;
            break;
        }
    }

    void SetDirection(int _direction) {
        direction = _direction;
    }

    virtual void Draw(char map[MapHeight][MapWidth + 1]) const {
        map[y][x] = '@';
    }
};

class Enemy : public Object {
public:
    Enemy(int _x, int _y) :Object(_x, _y) {}

    virtual void Draw(char map[MapHeight][MapWidth + 1]) const {
        map[y][x] = 'T';
    }
};

class Bullet : public Object {
private:
    int direction; // 0:上，1:右，2:下，3:左
public:
    Bullet(int _x, int _y, int _direction) :Object(_x, _y), direction(_direction) {}

    bool Move() {
        switch (direction) {
        case 0: // 上
            if (y > 0) {
                y--;
                return true;
            }
            break;
        case 1: // 右
            if (x < MapWidth - 1) {
                x++;
                return true;
            }
            break;
        case 2: // 下
            if (y < MapHeight - 1) {
                y++;
                return true;
            }
            break;
        case 3: // 左
            if (x > 0) {
                x--;
                return true;
            }
            break;
        }
        return false;
    }

    virtual void Draw(char map[MapHeight][MapWidth + 1]) const {
        map[y][x] = '*';
    }
};

class Game {
private:
    char map[MapHeight][MapWidth + 1];
    Player player;
    vector<Enemy> enemies;
    vector<Bullet> bullets;
public:
    Game() :player(1, 1) {
        // 初始化地图
        for (int i = 0; i < MapHeight; i++) {
            for (int j = 0; j < MapWidth; j++) {
                if (i == 0 || i == MapHeight - 1 || j == 0 || j == MapWidth - 1) {
                    map[i][j] = '#'; // 外围墙壁
                }
                else {
                    map[i][j] = ' ';
                }
            }
            map[i][MapWidth] = '\0';
        }

        // 初始化敌人
        srand((unsigned)time(NULL));
        for (int i = 0; i < 5; i++) {
            int x = rand() % (MapWidth - 2) + 1;
            int y = rand() % (MapHeight - 2) + 1;
            enemies.push_back(Enemy(x, y));
        }
    }

    void Draw() {
        system("cls"); // 清屏

        // 绘制地图
        for (int i = 0; i < MapHeight; i++) {
            cout << map[i] << endl;
        }
    }

    void Input() {
        if (_kbhit()) { // 判断是否有键盘输入
            switch (_getch()) {
            case 'w':
                player.SetDirection(0);
                break;
            case 'd':
                player.SetDirection(1);
                break;
            case 's':
                player.SetDirection(2);
                break;
            case 'a':
                player.SetDirection(3);
                break;
            case ' ':
                bullets.push_back(Bullet(player.GetX(), player.GetY(), player.GetDirection()));
                break;
            }
        }
    }

    void Logic() {
        // 移动玩家
        player.Move();

        // 移动敌人
        for (int i = 0; i < enemies.size(); i++) {
            int direction = rand() % 4;
            switch (direction) {
            case 0: // 上
                if (enemies[i].GetY() > 0) enemies[i] = Enemy(enemies[i].GetX(), enemies[i].GetY() - 1);
                break;
            case 1: // 右
                if (enemies[i].GetX() < MapWidth - 1) enemies[i] = Enemy(enemies[i].GetX() + 1, enemies[i].GetY());
                break;
            case 2: // 下
                if (enemies[i].GetY() < MapHeight - 1) enemies[i] = Enemy(enemies[i].GetX(), enemies[i].GetY() + 1);
                break;
            case 3: // 左
                if (enemies[i].GetX() > 0) enemies[i] = Enemy(enemies[i].GetX() - 1, enemies[i].GetY());
                break;
            }
        }

        // 移动子弹
        for (int i = 0; i < bullets.size(); i++) {
            if (!bullets[i].Move()) {
                bullets.erase(bullets.begin() + i);
                i--;
                continue;
            }
            // 检测子弹是否击中敌人
            for (int j = 0; j < enemies.size(); j++) {
                if (bullets[i].GetX() == enemies[j].GetX() && bullets[i].GetY() == enemies[j].GetY()) {
                    enemies.erase(enemies.begin() + j);
                    bullets.erase(bullets.begin() + i);
                    i--;
                    break;
                }
            }
        }

        // 更新地图
        for (int i = 0; i < MapHeight; i++) {
            for (int j = 0; j < MapWidth; j++) {
                map[i][j] = ' ';
            }
            map[i][MapWidth] = '\0';
        }
        player.Draw(map);
        for (int i = 0; i < enemies.size(); i++) {
            enemies[i].Draw(map);
        }
        for (int i = 0; i < bullets.size(); i++) {
            bullets[i].Draw(map);
        }
    }

    void Run() {
        while (true) {
            Draw();
            Input();
            Logic();
            Sleep(100); // 暂停一段时间，减缓游戏速度
        }
    }
};

int main() {
    Game game;
    game.Run();
    return 0;
}

这个小游戏比较简单，实现了玩家移动、射击、敌人移动和击中检测等功能。你可以根据自己的需要，添加更多的游戏元素和功能，比如加入更多的敌人、更多种类的子弹、更复杂的敌人移动方式和攻击方式等。