用c语言写一个贪吃蛇游戏的代码

以下是一个基本的贪吃蛇游戏的 C 语言代码：

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

#define WIDTH 30            // 宽度
#define HEIGHT 20           // 高度
#define SPEED 100           // 速度（毫秒）
#define SNAKE_MAX_LENGTH 50 // 蛇的最大长度

// 定义蛇的结构体
struct Snake {
    int x[SNAKE_MAX_LENGTH];
    int y[SNAKE_MAX_LENGTH];
    int length;
};

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

// 定义游戏的状态
enum GameStatus {
    GAME_OVER,
    GAME_WIN,
    GAME_RUNNING
};

// 初始化游戏状态
enum GameStatus game_status = GAME_RUNNING;

// 初始化蛇和食物
struct Snake snake = {0};
struct Food food = {0};

// 初始化得分和最高得分
int score = 0;
int high_score = 0;

// 打印地图
void print_map() {
    system("cls"); // 清屏
    printf("SCORE: %d\tHIGH SCORE: %d\n", score, high_score);
    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) {
                printf("#");
            } else if (i == food.y && j == food.x && food.exist) {
                printf("O");
            } else {
                int flag = 0;
                for (int k = 0; k < snake.length; k++) {
                    if (i == snake.y[k] && j == snake.x[k]) {
                        printf("X");
                        flag = 1;
                        break;
                    }
                }
                if (!flag) {
                    printf(" ");
                }
            }
        }
        printf("\n");
    }
}

// 初始化蛇的位置
void init_snake() {
    snake.length = 3;
    snake.x[0] = WIDTH / 2;
    snake.y[0] = HEIGHT / 2;
    for (int i = 1; i < snake.length; i++) {
        snake.x[i] = snake.x[i-1] - 1;
        snake.y[i] = snake.y[i-1];
    }
}

// 初始化食物的位置
void init_food() {
    food.exist = 1;
    while (food.exist) {
        food.x = rand() % WIDTH + 1;
        food.y = rand() % HEIGHT + 1;
        food.exist = 0;
        for (int i = 0; i < snake.length; i++) {
            if (food.x == snake.x[i] && food.y == snake.y[i]) {
                food.exist = 1;
                break;
            }
        }
    }
}

void update_snake(int x, int y) {
    // 更新蛇的位置
    for (int i = snake.length - 1; i > 0; i--) {
        snake.x[i] = snake.x[i - 1];
        snake.y[i] = snake.y[i - 1];
    }
    snake.x[0] = x;
    snake.y[0] = y;

    // 判断是否吃到食物
    if (food.x == x && food.y == y) {
        food.exist = 0;
        snake.length++;
        score += 10;
        if (score > high_score) {
            high_score = score;
        }
    }

    // 判断是否撞墙或自撞
    if (x < 1 || x > WIDTH || y < 1 || y > HEIGHT) {
        game_status = GAME_OVER;
    }
    for (int i = 1; i < snake.length; i++) {
        if (snake.x[0] == snake.x[i] && snake.y[0] == snake.y[i]) {
            game_status = GAME_OVER;
            break;
        }
    }

    // 判断是否通关
    if (snake.length >= SNAKE_MAX_LENGTH) {
        game_status = GAME_WIN;
    }
}

// 处理键盘输入
void handle_input() {
    if (_kbhit()) {
        int key = _getch();
        switch (key) {
            case 'w':
            case 'W':
                update_snake(snake.x[0], snake.y[0] - 1);
                break;
            case 's':
            case 'S':
                update_snake(snake.x[0], snake.y[0] + 1);
                break;
            case 'a':
            case 'A':
                update_snake(snake.x[0] - 1, snake.y[0]);
                break;
            case 'd':
            case 'D':
                update_snake(snake.x[0] + 1, snake.y[0]);
                break;
            default:
                break;
        }
    }
}

int main() {
    init_snake();
    init_food();
    while (game_status == GAME_RUNNING) {
        print_map();
        handle_input();
        update_snake(snake.x[0], snake.y[0]);
        Sleep(SPEED);
    }
    if (game_status == GAME_OVER) {
        printf("GAME OVER!\n");
    } else if (game_status == GAME_WIN) {
        printf("YOU WIN!\n");
    }
    return 0;
}

这个代码使用了 Windows 系统的 `conio.h` 和 `windows.h` 库，所以需要在 Windows 环境下编译运行。如果在 Linux 环境下运行，需要修改相关库的引用，并可能需要修改一些 Windows 相关的 API 调用。