用c语言写一个贪食蛇代码

以下是一个使用 C 语言编写的贪吃蛇游戏的基本框架，希望这可以帮助您：

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

// 常量定义
#define MAX_HEIGHT 20
#define MAX_WIDTH 40
#define MAX_LENGTH (MAX_HEIGHT * MAX_WIDTH)

// 方向定义
#define DIRECTION_UP 'w'
#define DIRECTION_DOWN 's'
#define DIRECTION_LEFT 'a'
#define DIRECTION_RIGHT 'd'

// 蛇身定义
typedef struct NODE
{
    int x;
    int y;
} Node;

// 蛇定义
typedef struct SNAKE
{
    int length;
    Node nodes[MAX_LENGTH];
} Snake;

// 食物定义
typedef struct FOOD
{
    int x;
    int y;
} Food;

int board[MAX_HEIGHT][MAX_WIDTH]; // 地图数组，0 表示空，1 表示蛇身，2 表示食物

// 初始化地图
void init_board()
{
    int i, j;
    for (i = 0; i < MAX_HEIGHT; ++i)
    {
        for (j = 0; j < MAX_WIDTH; ++j)
        {
            board[i][j] = 0;
        }
    }
}

// 画面输出
void draw_board()
{
    system("cls"); // 清屏
    int i, j;
    for (i = 0; i < MAX_HEIGHT; ++i)
    {
        for (j = 0; j < MAX_WIDTH; ++j)
        {
            if (board[i][j] == 0)
            {
                printf(" ");
            }
            else if (board[i][j] == 1)
            {
                printf("*");
            }
            else if (board[i][j] == 2)
            {
                printf("#");
            }
        }
        printf("\n");
    }
}

// 生成初始蛇身
void init_snake(Snake *snake)
{
    *(snake->nodes) = (Node){MAX_HEIGHT / 2, MAX_WIDTH / 2};
    snake->length = 1;
    board[snake->nodes[0].x][snake->nodes[0].y] = 1;
}

// 判断果实是否被吃掉
int detect_food(Snake *snake, Food *food)
{
    if (snake->nodes[0].x == food->x && snake->nodes[0].y == food->y)
    {
        return 1;
    }
    return 0;
}

// 生成新的果实
void generate_food(Food *food)
{
    food->x = rand() % MAX_HEIGHT;
    food->y = rand() % MAX_WIDTH;
    board[food->x][food->y] = 2;
}

// 更新蛇身位置
int update_snake(Snake *snake, char direction)
{
    // 计算新蛇头位置
    Node newhead = snake->nodes[0];
    switch (direction)
    {
    case DIRECTION_UP:
        newhead.x--;
        break;
    case DIRECTION_DOWN:
        newhead.x++;
        break;
    case DIRECTION_LEFT:
        newhead.y--;
        break;
    case DIRECTION_RIGHT:
        newhead.y++;
        break;
    }

    // 判断是否追尾
    int i;
    for (i = 1; i < snake->length; ++i)
    {
        if (newhead.x == snake->nodes[i].x && newhead.y == snake->nodes[i].y)
        {
            return 0; // 蛇头追尾，游戏结束
        }
    }

    // 判断是否吃到果实
    if (detect_food(snake, &((Food){newhead.x, newhead.y})))
    {
        board[snake->nodes[snake->length].x][snake->nodes[snake->length].y] = 1;
        snake->length++;
        generate_food(&((Food){newhead.x, newhead.y}));
    }

    // 蛇身移动
    for (i = snake->length - 1; i > 0; --i)
    {
        snake->nodes[i] = snake->nodes[i - 1];
    }
    snake->nodes[0] = newhead;
    board[newhead.x][newhead.y] = 1;

    return 1;
}

int main()
{
    srand(GetTickCount()); // 初始化随机数生成器
    init_board(); // 初始化地图
    Snake snake = {0}; // 新建蛇
    init_snake(&snake); // 初始化蛇身
    generate_food(&((Food){0, 0})); // 生成第一个果实
    char direction = DIRECTION_RIGHT;
    while (1)
    {
        draw_board(); // 刷新画面
        if (!_kbhit()) // 暂停一段时间
        {
            Sleep(100);
            continue;
        }
        char input = _getch(); // 读取输入
        if (input == DIRECTION_UP || input == DIRECTION_DOWN || input == DIRECTION_LEFT || input == DIRECTION_RIGHT)
        {
            direction = input;
        }
        else if (input == 'q') // 按下 q 键退出游戏
        {
            break;
        }
        int result = update_snake(&snake, direction); // 更新蛇身位置
        if (!result) // 判断游戏是否结束
        {
            printf("Game over!\n");
            break;
        }
    }
    return 0;
}