帮我用c++实现一个面向对象的贪吃蛇游戏；输出的代码带换行的

好的，下面是代码，请参考：

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

const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
bool gameOver;
int tailX[100], tailY[100];
int nTail;

enum eDirection {STOP = 0, LEFT, RIGHT, UP, DOWN};
eDirection dir;

class SnakeGame {
    public:
        void Setup() {
            gameOver = false;
            dir = STOP;
            x = width / 2;
            y = height / 2;
            fruitX = rand() % width;
            fruitY = rand() % height;
            score = 0;
        }

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

            // 画上边框
            for (int i = 0; i < width + 2; i++) {
                cout << "#";
            }
            cout << endl;

            // 画中间部分
            for (int i = 0; i < height; i++) {
                for (int j = 0; j < width; j++) {
                    if (j == 0) {
                        cout << "#";
                    }

                    if (i == y && j == x) {
                        cout << "O"; // 小蛇头部
                    } else if (i == fruitY && j == fruitX) {
                        cout << "F"; // 水果
                    } else {
                        bool print = false;
                        for (int k = 0; k < nTail; k++) {
                            if (tailX[k] == j && tailY[k] == i) {
                                cout << "o"; // 小蛇身体
                                print = true;
                            }
                        }
                        if (!print) {
                            cout << " ";
                        }
                    }

                    if (j == width - 1) {
                        cout << "#";
                    }
                }
                cout << endl;
            }

            // 画下边框
            for (int i = 0; i < width + 2; i++) {
                cout << "#";
            }
            cout << endl;

            // 输出得分
            cout << "Score:" << score << endl;
        }

        void Input() {
            if (_kbhit()) { // 键盘输入
                switch (_getch()) {
                    case 'a':
                        dir = LEFT;
                        break;
                    case 'd':
                        dir = RIGHT;
                        break;
                    case 'w':
                        dir = UP;
                        break;
                    case 's':
                        dir = DOWN;
                        break;
                    case 'x':
                        gameOver = true;
                        break;
                }
            }
        }

        void Logic() {
            int prevX = tailX[0];
            int prevY = tailY[0];
            int prev2X, prev2Y;
            tailX[0] = x;
            tailY[0] = y;
            for (int i = 1; i < nTail; i++) {
                prev2X = tailX[i];
                prev2Y = tailY[i];
                tailX[i] = prevX;
                tailY[i] = prevY;
                prevX = prev2X;
                prevY = prev2Y;
            }

            switch (dir) {
                case LEFT:
                    x--;
                    break;
                case RIGHT:
                    x++;
                    break;
                case UP:
                    y--;
                    break;
                case DOWN:
                    y++;
                    break;
            }

            // 检测撞墙
            if (x > width || x < 0 || y > height || y < 0) {
                gameOver = true;
            }

            // 检测是否吃到水果
            if (x == fruitX && y == fruitY) {
                score += 10;
                fruitX = rand() % width;
                fruitY = rand() % height;
                nTail++;
            }

            // 检测是否碰到自己
            for (int i = 0; i < nTail; i++) {
                if (tailX[i] == x && tailY[i] == y) {
                    gameOver = true;
                }
            }
        }

        void Run() {
            while (!gameOver) {
                Draw();
                Input();
                Logic();
                Sleep(50); // 控制速度
            }
        }
};

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

这是一个简单的贪吃蛇游戏，使用了面向对象的编程思想。在 `SnakeGame` 类中，我们定义了 `Setup()` 初始化游戏状态，`Draw()` 绘制游戏界面，`Input()` 处理用户输入，`Logic()` 处理游戏逻辑，`Run()` 进行游戏循环。