帮我写一个c语言贪吃蛇的游戏

好的，下面是一个简单的C语言贪吃蛇游戏的代码，代码中使用了Windows API函数，需要在Windows环境下编译运行：

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
#include <conio.h>

#define WIDTH 50   // 地图宽度
#define HEIGHT 20  // 地图高度

// 定义方向
enum Direction {
    UP,
    DOWN,
    LEFT,
    RIGHT
};

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

// 定义蛇的结构体
struct Snake {
    int x, y;   // 蛇头坐标
    int length;   // 蛇的长度
    enum Direction direction;   // 蛇的移动方向
    COORD body[WIDTH*HEIGHT];   // 蛇的身体，最多有WIDTH*HEIGHT个节点
};

// 定义食物的结构体
struct Food {
    int x, y;   // 食物坐标
};

// 定义游戏对象
struct Game {
    struct Snake snake;   // 蛇
    struct Food food;   // 食物
    enum GameState state;   // 游戏状态
};

// 初始化蛇
void init_snake(struct Snake *snake)
{
    snake->x = WIDTH / 2;
    snake->y = HEIGHT / 2;
    snake->length = 3;
    snake->direction = LEFT;

    // 初始化蛇的身体
    for (int i = 0; i < snake->length; i++) {
        snake->body[i].X = snake->x + i;
        snake->body[i].Y = snake->y;
    }
}

// 初始化食物
void init_food(struct Food *food, struct Snake *snake)
{
    srand(time(NULL));
    do {
        food->x = rand() % WIDTH;
        food->y = rand() % HEIGHT;
    } while (food->x == snake->x && food->y == snake->y);   // 食物不能与蛇头重合
}

// 打印地图
void print_map(struct Game *game)
{
    // 清屏
    system("cls");

    // 打印地图
    for (int y = 0; y < HEIGHT; y++) {
        for (int x = 0; x < WIDTH; x++) {
            if (x == 0 || x == WIDTH - 1 || y == 0 || y == HEIGHT - 1) {
                printf("#");
            } else if (x == game->snake.x && y == game->snake.y) {
                printf("@");
            } else if (x == game->food.x && y == game->food.y) {
                printf("$");
            } else {
                int flag = 0;
                for (int i = 0; i < game->snake.length; i++) {
                    if (x == game->snake.body[i].X && y == game->snake.body[i].Y) {
                        printf("*");
                        flag = 1;
                        break;
                    }
                }
                if (!flag) {
                    printf(" ");
                }
            }
        }
        printf("\n");
    }

    // 打印得分
    printf("Score: %d\n", game->snake.length - 3);
}

// 移动蛇
void move_snake(struct Game *game)
{
    // 记录蛇尾的坐标
    COORD tail = game->snake.body[game->snake.length - 1];

    // 移动蛇身
    for (int i = game->snake.length - 1; i > 0; i--) {
        game->snake.body[i] = game->snake.body[i-1];
    }

    // 移动蛇头
    switch (game->snake.direction) {
        case UP:
            game->snake.y--;
            break;
        case DOWN:
            game->snake.y++;
            break;
        case LEFT:
            game->snake.x--;
            break;
        case RIGHT:
            game->snake.x++;
            break;
    }
    game->snake.body[0].X = game->snake.x;
    game->snake.body[0].Y = game->snake.y;

    // 判断是否吃到食物
    if (game->snake.x == game->food.x && game->snake.y == game->food.y) {
        // 增加蛇的长度
        game->snake.length++;
        game->snake.body[game->snake.length - 1] = tail;

        // 重新生成食物
        init_food(&game->food, &game->snake);
    }

    // 判断是否撞到墙或者蛇身
    if (game->snake.x == 0 || game->snake.x == WIDTH - 1
            || game->snake.y == 0 || game->snake.y == HEIGHT - 1) {
        game->state = OVER;
    }
    for (int i = 1; i < game->snake.length; i++) {
        if (game->snake.x == game->snake.body[i].X && game->snake.y == game->snake.body[i].Y) {
            game->state = OVER;
            break;
        }
    }
}

// 处理按键事件
void handle_input(struct Game *game)
{
    if (_kbhit()) {
        switch (_getch()) {
            case 'w':
            case 'W':
            case 72:
                if (game->snake.direction != DOWN)
                    game->snake.direction = UP;
                break;
            case 's':
            case 'S':
            case 80:
                if (game->snake.direction != UP)
                    game->snake.direction = DOWN;
                break;
            case 'a':
            case 'A':
            case 75:
                if (game->snake.direction != RIGHT)
                    game->snake.direction = LEFT;
                break;
            case 'd':
            case 'D':
            case 77:
                if (game->snake.direction != LEFT)
                    game->snake.direction = RIGHT;
                break;
            case 27:   // ESC键
                game->state = OVER;
                break;
        }
    }
}

int main()
{
    struct Game game;
    game.state = RUNNING;

    // 初始化蛇和食物
    init_snake(&game.snake);
    init_food(&game.food, &game.snake);

    while (game.state == RUNNING) {
        print_map(&game);
        handle_input(&game);
        move_snake(&game);
        Sleep(100);   // 延时100毫秒
    }

    printf("Game Over!\n");

    return 0;
}

这个游戏中，玩家需要控制蛇移动，吃到食物增加长度，撞到墙或者蛇身则游戏结束。玩家可以使用WASD或者方向键来控制蛇的移动方向，按ESC键可以退出游戏。

希望能对你有所帮助！