贪吃蛇游戏代码

#include <iostream>
#include <vector>
#include <string>
#include <cstdlib>
#include <ctime>
#include <conio.h>
#include <windows.h>

using namespace std;

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

// 点类，用于表示位置
class Point {
public:
    int x, y;
    Point(int x = 0, int y = 0) : x(x), y(y) {}
    
    bool operator==(const Point& p) const {
        return x == p.x && y == p.y;
    }
};

// 蛇类
class Snake {
private:
    vector<Point> body;
    Direction direction;
    bool alive;

public:
    Snake(int x, int y) {
        body.push_back(Point(x, y));
        body.push_back(Point(x - 1, y));
        body.push_back(Point(x - 2, y));
        direction = RIGHT;
        alive = true;
    }

    void changeDirection(Direction newDirection) {
        // 防止180度转向
        if ((direction == UP && newDirection == DOWN) ||
            (direction == DOWN && newDirection == UP) ||
            (direction == LEFT && newDirection == RIGHT) ||
            (direction == RIGHT && newDirection == LEFT))
            return;
            
        direction = newDirection;
    }

    void move() {
        Point head = body[0];
        
        switch (direction) {
            case UP: head.y--; break;
            case DOWN: head.y++; break;
            case LEFT: head.x--; break;
            case RIGHT: head.x++; break;
        }
        
        // 检查是否撞墙或自噬
        if (head.x < 0 || head.x >= 80 || head.y < 0 || head.y >= 20) {
            alive = false;
            return;
        }
        
        for (size_t i = 0; i < body.size(); i++) {
            if (head == body[i]) {
                alive = false;
                return;
            }
        }
        
        // 移动蛇
        body.insert(body.begin(), head);
        body.pop_back();
    }

    bool isAlive() const {
        return alive;
    }

    vector<Point> getBody() const {
        return body;
    }

    Point getHead() const {
        return body[0];
    }

    void grow() {
        Point tail = body.back();
        body.push_back(tail);
    }

    bool checkCollision(Point p) const {
        for (size_t i = 0; i < body.size(); i++) {
            if (body[i] == p) return true;
        }
        return false;
    }
};

// 食物类
class Food {
private:
    Point position;
    int width, height;

public:
    Food(int w, int h) : width(w), height(h) {
        respawn();
    }

    void respawn() {
        position.x = rand() % (width - 2) + 1;
        position.y = rand() % (height - 2) + 1;
    }

    Point getPosition() const {
        return position;
    }
};

// 游戏类
class Game {
private:
    Snake snake;
    Food food;
    int score;
    bool gameOver;
    int width, height;

public:
    Game(int w = 80, int h = 20) : snake(w/2, h/2), food(w, h), score(0), gameOver(false), width(w), height(h) {
        srand(time(0));
    }

    void processInput() {
        if (_kbhit()) {
            char key = _getch();
            switch (key) {
                case 'w': snake.changeDirection(UP); break;
                case 's': snake.changeDirection(DOWN); break;
                case 'a': snake.changeDirection(LEFT); break;
                case 'd': snake.changeDirection(RIGHT); break;
                case 'q': gameOver = true; break;
            }
        }
    }

    void update() {
        snake.move();
        
        if (!snake.isAlive()) {
            gameOver = true;
            return;
        }
        
        if (snake.getHead() == food.getPosition()) {
            snake.grow();
            food.respawn();
            score += 10;
            
            // 确保食物不会出现在蛇身上
            while (snake.checkCollision(food.getPosition())) {
                food.respawn();
            }
        }
    }

    void render() {
        system("cls"); // 清屏
        
        // 绘制顶部边界
        for (int i = 0; i < width; i++)
            cout << "#";
        cout << endl;
        
        // 绘制游戏区域
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                bool isSnakePart = false;
                for (size_t i = 0; i < snake.getBody().size(); i++) {
                    if (snake.getBody()[i].x == x && snake.getBody()[i].y == y) {
                        cout << (i == 0 ? 'O' : 'o');
                        isSnakePart = true;
                        break;
                    }
                }
                
                if (!isSnakePart) {
                    if (food.getPosition().x == x && food.getPosition().y == y)
                        cout << 'X';
                    else if (x == 0 || x == width - 1)
                        cout << '#';
                    else
                        cout << ' ';
                }
            }
            cout << endl;
        }
        
        // 绘制底部边界
        for (int i = 0; i < width; i++)
            cout << "#";
        cout << endl;
        
        // 显示分数
        cout << "Score: " << score << endl;
        cout << "Use WASD to control, Q to quit" << endl;
    }

    bool isGameOver() const {
        return gameOver;
    }

    void run() {
        while (!gameOver) {
            processInput();
            update();
            render();
            Sleep(100); // 控制游戏速度
        }
        
        cout << "Game Over!" << endl;
        cout << "Final Score: " << score << endl;
    }
};

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