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C语言实现简单贪吃蛇代码
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C语言实现简单贪吃蛇代码
初始化蛇（init_snake函数）

C语言实现简单贪吃蛇代码
移动蛇（move_snake函数）

C语言实现简单贪吃蛇代码
打印蛇（ print_snake函数）

利用for循环检测坐标对应的蛇的位置
C语言实现简单贪吃蛇代码
代码演示

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

//游戏窗口
#define FrameX 6   //游戏窗口左上角的X轴坐标
#define FrameY 6   //游戏窗口左上角的Y轴坐标
#define Frame_height  20 //游戏窗口的高度
#define Frame_width   20 //游戏窗口的宽度

//定义全局变量
int i, j, p, q, temp;
int a[2];     //用于记住蛇尾坐标，其中a[0]、a[1]分别表示横、竖坐标

//声明蛇的结构体
struct Snake
{
    int x[100];    //蛇的横坐标，其中x[0]表示蛇尾的横坐标，x[N-1]表示蛇头的横坐标
    int y[100];    //蛇的竖坐标，其中y[0]表示蛇尾的竖坐标，y[N-1]表示蛇头的竖坐标
    int count;    //蛇吃食物的个数
    int length;    //蛇的长度
    int speed;    //蛇的速度
};

//声明食物的结构体
struct Food
{
    int x;     //食物的横坐标
    int y;     //食物的竖坐标
};


/******光标移到指定位置**************************************************************/
void gotoxy(HANDLE hOut, int x, int y)
{
    COORD pos;
    pos.X = x;  //横坐标
    pos.Y = y;  //纵坐标
    SetConsoleCursorPosition(hOut, pos);
}

/******游戏开始菜单******************************************************************/
void menu()
{
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    void help();
    void about();
    void over_game();
    void start_game();
    int n;
    gotoxy(hOut, 35, 10);
    printf("开始游戏 [1]");
    gotoxy(hOut, 35, 13);
    printf("帮助 [2]");
    gotoxy(hOut, 35, 16);
    printf("关于 [3]");
    gotoxy(hOut, 35, 19);
    printf("退出游戏 [4]");
    gotoxy(hOut, 35, 22);
    printf("选择：");
    scanf_s("%d", &n);
    switch (n) {
    case 1:
        system("cls");
        start_game();
        over_game();
        break;
    case 2:
        system("cls");
        help();
        break;
    case 3:
        system("cls");
        about();
        break;
    case 4:
        system("cls");
        exit(0);
        break;

    default:
        printf("※※您的输入有误，请重新输入※※");
        system("pause >nul");
        over_game();
        menu();
        break;
    }
}
/******帮助菜单******************************************************************/
void help()
{
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    int m;
    gotoxy(hOut, 35, 10);
    printf("↑   up");
    gotoxy(hOut, 35, 13);
    printf("↓   down选择：");
    gotoxy(hOut, 35, 16);
    printf("←   left");
    gotoxy(hOut, 35, 19);
    printf("→   right");
    gotoxy(hOut, 35, 22);
    printf("空格 暂停");
    gotoxy(hOut, 35, 25);
    printf("return   [1]+enter");
    gotoxy(hOut, 35, 28);
    printf("选择：");
    scanf_s("%d", &m);
    switch (m)
    {
    case 1:
        system("cls");
        menu();
        break;
    }
}
/******关于******************************************************************/
void about()
{
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    int a;
    gotoxy(hOut, 35, 10);
    printf("Hello World");
    gotoxy(hOut, 35, 13);
    printf("This is a eating snake");
    gotoxy(hOut, 35, 16);
    printf("Notice:");
    gotoxy(hOut, 35, 19);
    printf("Designd by us");
    gotoxy(hOut, 35, 22);
    printf("Hello World");
    gotoxy(hOut, 35, 25);
    printf("return   [1]+enter");
    gotoxy(hOut, 35, 28);
    printf("选择：");
    scanf_s("%d", &a);
    switch (a)
    {
    case 1:
        system("cls");
        menu();
        break;
    }
}

/******制作游戏窗口******************************************************************/
void make_frame()
{
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);  //定义显示器句柄变量
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 13);  //打印选择菜单
    printf("Esc 退出游戏");
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 15);
    printf("长按方向键：加速");


    gotoxy(hOut, FrameX, FrameY);       //打印框角
    printf("╔");
    gotoxy(hOut, FrameX + 2 * Frame_width - 2, FrameY);
    printf("╗");
    gotoxy(hOut, FrameX, FrameY + Frame_height);
    printf("╚");
    gotoxy(hOut, FrameX + 2 * Frame_width - 2, FrameY + Frame_height);
    printf("╝");
    gotoxy(hOut, FrameX + 2 * Frame_width - 26, FrameY + Frame_height - 13);
    printf("□");
    gotoxy(hOut, FrameX + 2 * Frame_width - 18, FrameY + Frame_height - 3);
    printf("□");
    gotoxy(hOut, FrameX + 2 * Frame_width - 12, FrameY + Frame_height - 8);
    printf("□");
    for (i = 2; i < 2 * Frame_width - 2; i += 2)
    {
        gotoxy(hOut, FrameX + i, FrameY);
        printf("═");         //打印上横框
    }
    for (i = 2; i < 2 * Frame_width - 2; i += 2)
    {
        gotoxy(hOut, FrameX + i, FrameY + Frame_height);
        printf("═");         //打印下横框
    }
    for (i = 1; i < Frame_height; i++)
    {
        gotoxy(hOut, FrameX, FrameY + i);
        printf("║");         //打印左竖框
    }
    for (i = 1; i < Frame_height; i++)
    {
        gotoxy(hOut, FrameX + 2 * Frame_width - 2, FrameY + i);
        printf("║");         //打印右竖框
    }

    gotoxy(hOut, FrameX + Frame_width - 5, FrameY - 2);   //打印游戏名称 

    printf("贪吃蛇游戏");
}
/******菜单信息***************************************************************/
void print_information(HANDLE hOut, struct Snake* snake, struct Food* food)
{
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 1);
    printf("level : %d", snake->count / 5 + 1);    //打印游戏等级
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 3);
    printf("score : %d", 10 * snake->count);    //打印游戏得分
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 5);
    printf("eat food : %d", snake->count);    //打印产生食物个数 
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 7);
    printf("speed : %dms", snake->speed);    //打印游戏速度
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 9);
    printf("foodX : %d", food->x);      //打印食物的横坐标
    gotoxy(hOut, FrameX + 2 * Frame_width + 8, FrameY + 11);
    printf("foodY : %d", food->y);      //打印食物的竖坐标
    p = snake->count / 5 + 1;
    q = 10 * snake->count;
}

/******初始化蛇**********************************************************************/
void init_snake(struct Snake* snake)
{
    snake->x[0] = FrameX + 2;     //初始化蛇的横坐标
    snake->y[0] = FrameY + Frame_height / 2;  //初始化蛇的竖坐标
    snake->speed = 300;      //初始化蛇的速度为300ms
    snake->length = 3;      //初始化蛇的长度为3节
    snake->count = 0;       //初始化蛇吃的个数为0
    for (i = 1; i < snake->length; i++)
    {/* 依次得到蛇身、蛇头的坐标 */
        snake->x[i] = snake->x[i - 1] + 2;
        snake->y[i] = snake->y[i - 1];
    }
}

/******移动蛇*************************************************************************/
void move_snake(HANDLE hOut, struct Snake* snake)
{
    gotoxy(hOut, snake->x[0], snake->y[0]);
    printf("  ");       /* 清除蛇尾*/
    for (i = 1; i < snake->length; i++)
    {/* 后一节的坐标依次取代前一节的坐标 */
        snake->x[i - 1] = snake->x[i];
        snake->y[i - 1] = snake->y[i];
    }
}

/******打印蛇*************************************************************************/
void print_snake(HANDLE hOut, struct Snake* snake)
{
    for (i = 0; i < snake->length; i++)
    {
        gotoxy(hOut, snake->x[i], snake->y[i]);
        if (i == 0)
        {
            printf("○");       //打印蛇尾
        }
        else if (i == snake->length - 1)
        {
            printf("¤");       //打印蛇头
        }
        else
        {
            printf("⊙");       //打印蛇身
        }
    }
}

/******产生食物*************************************************************************/
void get_food(HANDLE hOut, struct Snake* snake, struct Food* food)
{
    srand((unsigned)time(NULL));       //初始化随机数
    while (1)
    {/* 产生食物的条件：1.在游戏窗口内 2.不在蛇的身上 */
        food->x = rand() % (Frame_width - 1);
        food->y = rand() % Frame_height;
        if (food->x == 0 || food->y == 0)
        {
            continue;
        }
        food->x = 2 * food->x + FrameX;      //得到食物的横坐标
        food->y += FrameY;         //得到食物的竖坐标
        for (i = 0; i < snake->length; i++)
        {/* 判断食物是否在蛇的身上，如果在蛇身上，则重新产生；否则，打印蛇身 */
            if (food->x == snake->x[i] && food->y == snake->y[i])
            {
                break;
            }
        }
        if (i == snake->length)
        {
            gotoxy(hOut, food->x, food->y);
            if (temp % 2 == 0)
            {
                printf("●");
            }
            else
            {
                printf("☆");
            }
            temp++;
            break;
        }
    }
}

/******吃食物***************************************************************************/
void eat_food(HANDLE hOut, struct Snake* snake, struct Food* food)
{
    if (snake->x[snake->length - 1] == food->x && snake->y[snake->length - 1] == food->y)
    {/* 如果蛇头位置与食物位置相同，吃食物 */
        snake->length++;      //吃一个食物，蛇身增长一节
        for (i = snake->length - 1; i >= 1; i--)
        {/* 蛇后节坐标依次赋值给蛇前一节的坐标，依次得到蛇身及蛇头的坐标 */
            snake->x[i] = snake->x[i - 1];
            snake->y[i] = snake->y[i - 1];
        }
        snake->x[0] = a[0];      //得到蛇尾移动前的横坐标
        snake->y[0] = a[1];      //得到蛇尾移动前的竖坐标  
        get_food(hOut, snake, food);    //重新产生食物
        snake->count++;       //食物的个数增1
        if (snake->count % 5 == 0)
        {/* 当蛇吃Up_level个食物时，速度加快Up_speed毫秒并且升一级 */
            snake->speed -= 50;
        }
    }
}

/******穿墙**********************************************************************************/
void through_wall(HANDLE hOut, struct Snake* snake, char ch)
{
    if (ch == 72 && snake->y[snake->length - 1] == FrameY)
    {
        snake->y[snake->length - 1] = FrameY + Frame_height - 1; //如果蛇在上框且向上移动，穿墙
    }
    if (ch == 80 && snake->y[snake->length - 1] == FrameY + Frame_height)
    {
        snake->y[snake->length - 1] = FrameY + 1;    //如果蛇在下框且向下移动，穿墙
    }
    if (ch == 75 && snake->x[snake->length - 1] == FrameX)
    {
        snake->x[snake->length - 1] = FrameX + 2 * Frame_width - 4; //如果蛇在左框且向左移动，穿墙
    }
    if (ch == 77 && snake->x[snake->length - 1] == FrameX + 2 * Frame_width - 2)
    {
        snake->x[snake->length - 1] = FrameX + 2;    //如果蛇在右框且向右移动，穿墙
    }
}

/******判断蛇是否死**************************************************************************/
int if_die(struct Snake* snake)
{/* 当蛇头碰到自身时，蛇死 ，返回值为0 */
    for (i = 0; i < snake->length - 1; i++)
    {
        if (snake->x[snake->length - 1] == snake->x[i] && snake->y[snake->length - 1] == snake->y[i])
        {
            return 0;
        }
        if (snake->x[snake->length - 1] == FrameX + 2 * Frame_width - 26 && snake->y[snake->length - 1] == FrameY + Frame_height - 13)
        {
            return 0;
        }
        if (snake->x[snake->length - 1] == FrameX + 2 * Frame_width - 18 && snake->y[snake->length - 1] == FrameY + Frame_height - 3)
        {
            return 0;
        }
        if (snake->x[snake->length - 1] == FrameX + 2 * Frame_width - 12 && snake->y[snake->length - 1] == FrameY + Frame_height - 8)
        {
            return 0;
        }

    }
    return 1;
}

/******开始游戏*******************************************************************************/
void start_game()
{
    unsigned char ch = 77;        //定义用于接收键盘输入的字符变量
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE); //定义显示器句柄变量
    struct Snake s, * snake = &s;      //定义蛇的结构体指针并指向蛇的结构体
    struct Food f, * food = &f;       //定义食物的结构体指针并指向食物的结构体

    make_frame();         //制作游戏窗口 
    init_snake(snake);        //初始化蛇
    get_food(hOut, snake, food);      //随机产生食物
    while (1)
    {
        print_information(hOut, snake, food);   //打印菜单信息
        a[0] = snake->x[0];       //记住蛇尾的横坐标
        a[1] = snake->y[0];       //记住蛇尾的竖坐标
        j = 0;
        if (_kbhit())
        {/* 判断是否按下键盘，如果按下，ch接收键盘输入 */
            ch = _getch();
            if (_kbhit())
            {/* 如果长按键盘，则加速 */
                Sleep(20);
                j = 1;
            }
        }
        switch (ch)
        {
        case 72:
        {/* 向上移动 */
            move_snake(hOut, snake);   //移动蛇
            snake->y[snake->length - 1] -= 1; //蛇头的竖坐标向上移，即减1
            break;
        }
        case 80:
        {/* 向下移动 */
            move_snake(hOut, snake);   //移动蛇
            snake->y[snake->length - 1] += 1; //蛇头的竖坐标向下移，即加1
            break;
        }
        case 75:
        {/* 向左移动 */
            move_snake(hOut, snake);   //移动蛇
            snake->x[snake->length - 1] -= 2; //蛇头的横坐标向左移，即减2
            break;
        }
        case 77:
        {/* 向右移动 */
            move_snake(hOut, snake);   //移动蛇
            snake->x[snake->length - 1] += 2; //蛇头的横坐标向右移，即加2
            break;
        }
        }
        through_wall(hOut, snake, ch);    //穿墙   
        eat_food(hOut, snake, food);     //吃食物
        print_snake(hOut, snake);     //打印蛇
        if (if_die(snake) == 0)
        {/* 游戏结束条件：1.蛇碰到自身 2.按Esc键 3.速度为50ms */
            gotoxy(hOut, FrameX + Frame_width - 2, FrameY + Frame_height / 2 - 1);
            printf("Game Over");
            Sleep(2000);
            break;
        }
        if (j == 0)
        {
            Sleep(snake->speed);      //延迟时间
        }
        else
        {
            Sleep(10);
        }
    }
}

void choose()
{
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    void over_game();
    void start_game();
    int n;
    gotoxy(hOut, 10, 20);
    printf("Continue [1]");
    gotoxy(hOut, 30, 20);
    printf("Exit [2]");
    gotoxy(hOut, 55, 20);
    printf("选择：");
    scanf_s("%d", &n);
    switch (n) {
    case 1:
        system("cls");
        start_game();
        over_game();
        break;
    case 2:
        exit(0);
        break;

    default:
        printf("※※您的输入有误，请重新输入※※");
        system("pause >nul");
        over_game();
        choose();
        break;
    }
}
/******结束菜单*******************************************************************/
void over_game() {
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    system("cls");
    printf("\n\n\n\n\n\n\n\n\t\t\t\t游戏结束\n\n\n");
    gotoxy(hOut, 15, 15);
    printf("level : %d", p);
    gotoxy(hOut, 35, 15);
    printf("score : %d", q);
    choose();
    system("pause");
}
void main()
{
    menu();

    start_game();   //开始游戏

    over_game();   //结束游戏
}
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