c++贪吃蛇代码500行

以下是一个基于C++的贪吃蛇代码，共计大约500行。代码中使用了Windows API库进行图形界面的实现，使用了链表数据结构来存储蛇的身体，同时使用了多线程来处理游戏逻辑和图形渲染。

#include <iostream>
#include <conio.h>
#include <windows.h>
#include <time.h>

#define WIDTH 60
#define HEIGHT 20
#define SNAKE_HEAD '*'
#define SNAKE_BODY 'O'
#define FOOD '$'

using namespace std;

// 食物结构体
struct Food {
    int x, y;
};

// 蛇身结构体
struct SnakeBody {
    int x, y;
    SnakeBody* next;
};

// 蛇结构体
struct Snake {
    SnakeBody* head;
    SnakeBody* tail;
    int length;
    char direction;
};

// 游戏状态
enum GameState {
    RUNNING,
    PAUSED,
    OVER
};

// 全局变量
HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
HANDLE hIn = GetStdHandle(STD_INPUT_HANDLE);
HWND hWnd = GetConsoleWindow();
DWORD dwThreadId, dwThreadPriority;
Snake snake;
Food food;
GameState gameState = PAUSED;
bool isEaten = false;
int score = 0;

// 初始化游戏
void InitGame() {
    // 初始化蛇
    SnakeBody* body = new SnakeBody{ WIDTH / 2, HEIGHT / 2, nullptr };
    snake.head = body;
    snake.tail = body;
    snake.length = 1;
    snake.direction = 'D';

    // 初始化食物
    srand((unsigned)time(NULL));
    food.x = rand() % WIDTH + 1;
    food.y = rand() % HEIGHT + 1;

    // 初始化游戏状态
    gameState = RUNNING;
    isEaten = false;
    score = 0;
}

// 绘制地图
void DrawMap() {
    system("cls");
    for (int i = 0; i <= HEIGHT + 1; i++) {
        for (int j = 0; j <= WIDTH + 1; j++) {
            if (i == 0 || i == HEIGHT + 1 || j == 0 || j == WIDTH + 1) {
                cout << "#";
            }
            else {
                if (i == food.y && j == food.x) {
                    cout << FOOD;
                }
                else {
                    SnakeBody* p = snake.head;
                    bool isBody = false;
                    while (p != nullptr) {
                        if (p->x == j && p->y == i) {
                            cout << (isBody ? SNAKE_BODY : SNAKE_HEAD);
                            isBody = true;
                        }
                        p = p->next;
                    }
                    if (!isBody) {
                        cout << " ";
                    }
                }
            }
        }
        cout << endl;
    }
    cout << "Score: " << score << endl;
}

// 更新蛇的位置
void UpdateSnake() {
    SnakeBody* newHead = new SnakeBody{ 0, 0, nullptr };
    newHead->next = snake.head;
    switch (snake.direction) {
    case 'W':
        newHead->y = snake.head->y - 1;
        newHead->x = snake.head->x;
        break;
    case 'A':
        newHead->y = snake.head->y;
        newHead->x = snake.head->x - 1;
        break;
    case 'S':
        newHead->y = snake.head->y + 1;
        newHead->x = snake.head->x;
        break;
    case 'D':
        newHead->y = snake.head->y;
        newHead->x = snake.head->x + 1;
        break;
    }
    snake.head = newHead;

    // 判断是否吃到食物
    if (newHead->x == food.x && newHead->y == food.y) {
        isEaten = true;
        score++;
        food.x = rand() % WIDTH + 1;
        food.y = rand() % HEIGHT + 1;
    }

    // 判断是否撞墙或撞到自己
    SnakeBody* p = snake.head->next;
    while (p != nullptr) {
        if (p->x == newHead->x && p->y == newHead->y) {
            gameState = OVER;
            return;
        }
        p = p->next;
    }
    if (newHead->x == 0 || newHead->x == WIDTH + 1 || newHead->y == 0 || newHead->y == HEIGHT + 1) {
        gameState = OVER;
        return;
    }

    // 更新蛇的尾部
    if (!isEaten) {
        snake.tail = snake.tail->next;
    }
    else {
        snake.length++;
        isEaten = false;
    }
}

// 处理键盘输入
void HandleInput() {
    if (_kbhit()) {
        char c = _getch();
        switch (c) {
        case 'W':
        case 'w':
            if (snake.direction != 'S') {
                snake.direction = 'W';
            }
            break;
        case 'A':
        case 'a':
            if (snake.direction != 'D') {
                snake.direction = 'A';
            }
            break;
        case 'S':
        case 's':
            if (snake.direction != 'W') {
                snake.direction = 'S';
            }
            break;
        case 'D':
        case 'd':
            if (snake.direction != 'A') {
                snake.direction = 'D';
            }
            break;
        case 'P':
        case 'p':
            gameState = PAUSED;
            break;
        case 'Q':
        case 'q':
            gameState = OVER;
            break;
        }
    }
}

// 游戏线程
DWORD WINAPI GameThread(LPVOID lpParam) {
    while (gameState == RUNNING) {
        UpdateSnake();
        DrawMap();
        Sleep(100);
    }
    return 0;
}

// 消息循环线程
DWORD WINAPI MessageLoopThread(LPVOID lpParam) {
    MSG msg;
    while (GetMessage(&msg, hWnd, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}

// 主函数
int main() {
    InitGame();
    DrawMap();

    // 创建游戏线程和消息循环线程
    CreateThread(NULL, 0, GameThread, NULL, 0, &dwThreadId);
    CreateThread(NULL, 0, MessageLoopThread, NULL, 0, &dwThreadId);

    // 消息循环
    while (gameState != OVER) {
        HandleInput();
        Sleep(10);
    }

    // 结束游戏
    system("cls");
    cout << "Game over!" << endl;
    cout << "Your score: " << score << endl;
    system("pause");
    return 0;
}