c++贪吃蛇

#include <iostream>
#include <vector>
#include <conio.h> // 用于_getch()
#include <windows.h> // 用于Sleep()
#include <cstdlib> // 用于rand()和srand()
#include <ctime> // 用于time()

// 游戏区域大小
const int WIDTH = 20;
const int HEIGHT = 20;

// 方向枚举
enum Direction { STOP = 0, LEFT, RIGHT, UP, DOWN };

// 蛇的节点结构
struct Point {
    int x, y;
    Point(int _x = 0, int _y = 0) : x(_x), y(_y) {}
};

// 游戏类
class SnakeGame {
private:
    bool gameOver;
    Point food;
    std::vector<Point> snake;
    Direction dir;
    int score;
    
    // 生成随机食物位置
    void generateFood() {
        food.x = rand() % WIDTH;
        food.y = rand() % HEIGHT;
        
        // 确保食物不会生成在蛇身上
        for (size_t i = 0; i < snake.size(); ++i) {
            if (food.x == snake[i].x && food.y == snake[i].y) {
                generateFood();
                return;
            }
        }
    }
    
public:
    SnakeGame() : gameOver(false), dir(STOP), score(0) {
        // 初始化蛇身，长度为3
        snake.push_back(Point(WIDTH/2, HEIGHT/2));
        snake.push_back(Point(WIDTH/2+1, HEIGHT/2));
        snake.push_back(Point(WIDTH/2+2, HEIGHT/2));
        
        generateFood();
    }
    
    // 绘制游戏界面
    void draw() {
        system("cls"); // 清屏
        
        // 绘制上边界
        for (int i = 0; i < WIDTH+2; ++i)
            std::cout << "#";
        std::cout << std::endl;
        
        for (int y = 0; y < HEIGHT; ++y) {
            for (int x = 0; x < WIDTH; ++x) {
                // 绘制左边界
                if (x == 0) std::cout << "#";
                
                // 绘制蛇头
                if (x == snake[0].x && y == snake[0].y)
                    std::cout << "O";
                // 绘制蛇身
                else {
                    bool isBody = false;
                    for (size_t i = 1; i < snake.size(); ++i) {
                        if (x == snake[i].x && y == snake[i].y) {
                            std::cout << "o";
                            isBody = true;
                            break;
                        }
                    }
                    
                    // 绘制食物
                    if (!isBody) {
                        if (x == food.x && y == food.y)
                            std::cout << "F";
                        else
                            std::cout << " ";
                    }
                }
                
                // 绘制右边界
                if (x == WIDTH-1) std::cout << "#";
            }
            std::cout << std::endl;
        }
        
        // 绘制下边界
        for (int i = 0; i < WIDTH+2; ++i)
            std::cout << "#";
        std::cout << std::endl;
        
        std::cout << "Score: " << score << std::endl;
    }
    
    // 处理输入
    void input() {
        if (_kbhit()) {
            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;
            }
        }
    }
    
    // 更新游戏逻辑
    void logic() {
        // 保存蛇尾位置
        Point prev = snake.back();
        Point prev2;
        
        // 移动蛇身
        for (size_t i = snake.size()-1; i > 0; --i) {
            snake[i] = snake[i-1];
        }
        
        // 移动蛇头
        switch (dir) {
            case LEFT:  snake[0].x--; break;
            case RIGHT: snake[0].x++; break;
            case UP:    snake[0].y--; break;
            case DOWN:  snake[0].y++; break;
            default: break;
        }
        
        // 检查是否吃到食物
        if (snake[0].x == food.x && snake[0].y == food.y) {
            score += 10;
            // 蛇身增长
            snake.push_back(prev);
            generateFood();
        }
        
        // 检查撞墙
        if (snake[0].x >= WIDTH || snake[0].x < 0 || snake[0].y >= HEIGHT || snake[0].y < 0)
            gameOver = true;
        
        // 检查撞到自己
        for (size_t i = 1; i < snake.size(); ++i) {
            if (snake[0].x == snake[i].x && snake[0].y == snake[i].y)
                gameOver = true;
        }
    }
    
    bool isGameOver() const { return gameOver; }
};

int main() {
    // 设置随机种子
    srand(static_cast<unsigned>(time(0)));
    
    SnakeGame game;
    
    while (!game.isGameOver()) {
        game.draw();
        game.input();
        game.logic();
        Sleep(100); // 控制游戏速度
    }
    
    std::cout << "Game Over! Final Score: " << std::endl;
    system("pause");
    return 0;
}