用c++写面对对象思想贪吃蛇

好的，我可以帮你回答这个问题。下面是一个简单的面向对象思想的贪吃蛇游戏的C++实现：

#include <iostream>
#include <vector>
#include <conio.h>
#include <windows.h>
using namespace std;

const int width = 20;  // 地图宽度
const int height = 20;  // 地图高度
int score = 0;  // 得分

class Point {
private:
    int x;
    int y;
public:
    Point(int _x, int _y) :x(_x), y(_y) {}
    int getX() const { return x; }
    int getY() const { return y; }
    void setX(int _x) { x = _x; }
    void setY(int _y) { y = _y; }
};

class Snake {
private:
    vector<Point> body;  // 蛇身
    int direction;  // 移动方向
public:
    Snake(int x, int y) {
        body.push_back(Point(x, y));
        direction = 1;
    }
    void move() {
        Point head = getHead();
        switch (direction) {
        case 1:  // 上
            body.insert(body.begin(), Point(head.getX(), head.getY() - 1));
            break;
        case 2:  // 下
            body.insert(body.begin(), Point(head.getX(), head.getY() + 1));
            break;
        case 3:  // 左
            body.insert(body.begin(), Point(head.getX() - 1, head.getY()));
            break;
        case 4:  // 右
            body.insert(body.begin(), Point(head.getX() + 1, head.getY()));
            break;
        }
        body.pop_back();
    }
    void changeDirection(int d) {
        if (abs(direction - d) != 2) {
            direction = d;
        }
    }
    bool checkCollision() const {
        Point head = getHead();
        if (head.getX() < 0 || head.getX() >= width || head.getY() < 0 || head.getY() >= height) {
            return true;
        }
        for (int i = 1; i < body.size(); i++) {
            if (head.getX() == body[i].getX() && head.getY() == body[i].getY()) {
                return true;
            }
        }
        return false;
    }
    void eat() {
        Point head = getHead();
        body.insert(body.begin(), Point(head.getX(), head.getY()));
        score += 10;
    }
    Point getHead() const {
        return body.front();
    }
    vector<Point> getBody() const {
        return body;
    }
};

class Food {
private:
    Point position;  // 食物位置
public:
    Food() {
        srand((unsigned)time(NULL));
        int x = rand() % width;
        int y = rand() % height;
        position = Point(x, y);
    }
    Point getPosition() const {
        return position;
    }
    void regenerate() {
        srand((unsigned)time(NULL));
        int x = rand() % width;
        int y = rand() % height;
        position.setX(x);
        position.setY(y);
    }
};

class Game {
private:
    Snake snake;
    Food food;
public:
    Game(int x, int y) :snake(x, y) {}
    void run() {
        while (true) {
            system("cls");
            drawMap();
            drawSnake();
            drawFood();
            moveSnake();
            if (snake.checkCollision()) {
                gameOver();
                break;
            }
            if (eatFood()) {
                snake.eat();
                food.regenerate();
            }
            Sleep(150);
        }
    }
    void drawMap() const {
        for (int i = 0; i < width + 2; i++) {
            cout << "#";
        }
        cout << endl;
        for (int i = 0; i < height; i++) {
            cout << "#";
            for (int j = 0; j < width; j++) {
                cout << " ";
            }
            cout << "#" << endl;
        }
        for (int i = 0; i < width + 2; i++) {
            cout << "#";
        }
        cout << endl;
        cout << "score: " << score << endl;
    }
    void drawSnake() const {
        vector<Point> body = snake.getBody();
        for (int i = 0; i < body.size(); i++) {
            int x = body[i].getX();
            int y = body[i].getY();
            gotoxy(x + 1, y + 1);
            if (i == 0) {
                cout << "@";
            }
            else {
                cout << "*";
            }
        }
    }
    void drawFood() const {
        Point pos = food.getPosition();
        gotoxy(pos.getX() + 1, pos.getY() + 1);
        cout << "$";
    }
    void moveSnake() {
        if (_kbhit()) {
            int c = _getch();
            switch (c) {
            case 'w':
            case 'W':
                snake.changeDirection(1);
                break;
            case 's':
            case 'S':
                snake.changeDirection(2);
                break;
            case 'a':
            case 'A':
                snake.changeDirection(3);
                break;
            case 'd':
            case 'D':
                snake.changeDirection(4);
                break;
            }
        }
        snake.move();
    }
    bool eatFood() const {
        Point head = snake.getHead();
        Point foodPos = food.getPosition();
        if (head.getX() == foodPos.getX() && head.getY() == foodPos.getY()) {
            return true;
        }
        return false;
    }
    void gameOver() const {
        system("cls");
        cout << "Game Over!" << endl;
        cout << "Your Score: " << score << endl;
        system("pause");
    }
    void gotoxy(int x, int y) const {
        COORD pos = { x, y };
        HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);
        SetConsoleCursorPosition(console, pos);
    }
};

int main() {
    Game game(width / 2, height / 2);
    game.run();
    return 0;
}

这个程序使用了三个类：`Point`、`Snake`和`Food`。其中`Point`类表示地图上的一个点，包含`x`和`y`两个坐标；`Snake`类表示蛇，包含蛇身、移动方向等属性和移动、改变方向、检查碰撞等方法；`Food`类表示食物，包含食物的位置和重新生成食物的方法。`Game`类是游戏主类，包含游戏的主循环、绘制地图、绘制蛇、绘制食物、移动蛇、检测碰撞、吃食物、游戏结束等方法。

在`main`函数中创建`Game`对象并调用`run`方法即可启动游戏。这个程序使用了Windows API的一些函数来实现控制台的光标移动和清屏等操作。