小游戏：贪吃蛇

功能描述：
1.蛇初始长度为5，随着吃食物变长，速度也变快
2.速度有上限，当速度达到上限，不再增速
3.可长按方向键加速
4.吃一个食物加一分

三个文件：Snake.h、Snake.c、test.c

Snake.h

#pragma once#include <stdio.h>#include <stdlib.h>#include <windows.h>#include <time.h>#define FOOD "口"    //墙和蛇身图案#define INIT_X 24   //蛇出发的起始横坐标#define INIT_Y 4    //蛇出发的起始纵坐标#define MIN_SPEED 500   //蛇最小（起始）速度#define MAX_SPEED 100   //蛇最大速度#define ADD_SPEED 50    //每次加速改变50//蛇的速度是靠Sleep函数实现的，Sleep函数控制在屏幕上打印蛇的时间间隔//当Sleep(int x)中的数值越小，打印时间间隔越短，速度就越快//蛇结点typedef struct node{    int x;  //蛇结点横坐标    int y;  //蛇结点纵坐标    struct node *next;  //蛇结点指针（指向下一结点）}SnakeNode, *pSnakeNode;//蛇本身typedef struct snake{    pSnakeNode _pSnake; //蛇头指针    pSnakeNode _pFood;  //食物    enum DIRECTION _Dir;    //行走方向    enum Status _Status;    //当前状态    int _SleepTime; //每走一步停留的时间    int _Mark;  //分数}Snake, *pSnake;//蛇的状态enum Status{    OK, //活着    KILL_BY_SELF,   //被自己咬死    KILL_BY_WALL    //撞墙死};//方向enum DIRECTION{    UP = 1,    DOWN,    LEFT,    RIGHT};void SetPos(int x, int y);//设置光标位置void DrawMap(void);//画背景void InitSnake(pSnake ps);//初始化void CreatFood(pSnake ps);//设置食物void SnakeMove(pSnake ps);//移动int NextIsFood(pSnake ps, pSnakeNode nNode);//判断当前位置是否是食物void EatFood(pSnake ps, pSnakeNode nNode);//有食物吃食物，增加结点void NoFood(pSnake ps, pSnakeNode nNode);//无食物不吃int SnakeRun(pSnake ps);//控制方向int KillBySelf(pSnake ps);//撞蛇身死亡int KillByWall(pSnake ps);//撞墙死亡

Snake.c

#define _CRT_SECURE_NO_WARNINGS -1#include "snake.h"void SetPos(int x,int y)//设置光标位置{    //获取标准输出的句柄    HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);    COORD pos = { 0 };    pos.X = x;    pos.Y = y;    //设置当前坐标为标准输出的句柄    SetConsoleCursorPosition(handle, pos);}void DrawMap(void)//画背景{    //画游戏背景    int i;    for (i = 0; i < 58;i += 2)    {        SetPos(i,0);        printf(FOOD);    }    for (i = 0; i < 58; i += 2)    {        SetPos(i, 26);        printf(FOOD);    }    for (i = 0; i < 26; i ++)    {        SetPos(0, i);        printf(FOOD);    }    for (i = 0; i <= 26; i++)    {        SetPos(58, i);        printf(FOOD);    }    //画分数背景    for (i = 58; i < 84; i += 2)    {        SetPos(i, 0);        printf(FOOD);    }    for (i = 58; i < 84; i += 2)    {        SetPos(i, 26);        printf(FOOD);    }    for (i = 0; i <= 26; i++)    {        SetPos(84, i);        printf(FOOD);    }    SetPos(64,10);    printf("空格：暂停/继续\n");    SetPos(64,11);    printf("Esc   ：退出\n");    SetPos(64, 13);    printf("↑↓←→控制方向");     SetPos(64, 14);    printf("长按方向键加速");}void InitSnake(pSnake ps)//初始化{    pSnakeNode cur = NULL;    int i = 0;    cur = (SnakeNode* )malloc(sizeof(SnakeNode));    memset(cur, 0, sizeof(SnakeNode));    cur->x = INIT_X;    cur->y = INIT_Y;    cur->next = NULL;    for (i = 1; i < 5;i++)    {        ps->_pSnake = (SnakeNode*)malloc(sizeof(SnakeNode));        ps->_pSnake->next = cur;        ps->_pSnake->x = INIT_X + i * 2;        ps->_pSnake->y = INIT_Y;        cur=ps->_pSnake;    }    while (cur->next!=NULL)    {        SetPos(cur->x,cur->y);        printf(FOOD);        cur = cur->next;    }    ps->_SleepTime = MIN_SPEED;    ps->_Status = OK;    ps->_Dir = RIGHT;    ps->_Mark = 0;}void CreatFood(pSnake ps)//设置食物{    pSnakeNode cur = NULL;    pSnakeNode food = NULL;    food = (SnakeNode*)malloc(sizeof(SnakeNode));flag:    memset(food, 0, sizeof(SnakeNode));    //随机产生食物出现的位置    do    {        food->x = rand() % 56 + 2;    }while (food->x % 2 != 0);    food->y = rand() % 25 + 1;    cur = ps->_pSnake;    while (cur!=NULL)    {        if (cur->x == food->x&&cur->y == food->y)        {            goto flag;        }        cur = cur->next;    }    ps->_pFood = food;    SetPos(food->x,food->y);    printf(FOOD);}int NextIsFood(pSnake ps, pSnakeNode nNode)//判断当前位置是否是食物{    return ps->_pFood->x == nNode->x &&\        ps->_pFood->y == nNode->y;}void EatFood(pSnake ps, pSnakeNode nNode)//有食物吃食物，增加结点{    pSnakeNode cur = ps->_pSnake;    nNode->next = cur;    ps->_pSnake= nNode;    cur = ps->_pSnake;    while (cur!=NULL)    {        SetPos(cur->x,cur->y);        printf(FOOD);        cur = cur->next;    }    CreatFood(ps);}void NoFood(pSnake ps, pSnakeNode nNode)//无食物不吃{    pSnakeNode cur = ps->_pSnake;    nNode->next = cur;    ps->_pSnake = nNode;    cur = ps->_pSnake;    while (cur->next->next!=NULL)    {        SetPos(cur->x, cur->y);        printf(FOOD);        cur = cur->next;    }    //倒数第二个蛇身结点可绘制可不绘制，它并未改变    //SetPos(cur->x, cur->y);    //printf("口");    SetPos(cur->next->x,cur->next->y);    printf("  ");    free(cur->next);    cur->next = NULL;}int KillBySelf(pSnake ps)//撞蛇身死亡{    pSnakeNode cur = ps->_pSnake->next;    while (cur !=NULL)    {        if (ps->_pSnake->x == cur->x && ps->_pSnake->y == cur->y)        {            return 1;        }        cur = cur->next;    }    return 0;}int KillByWall(pSnake ps)//撞墙死亡{    if (ps->_pSnake->x == 0 || ps->_pSnake->x == 58||\        ps->_pSnake->y == 0 || ps->_pSnake->y == 26)    {        return 1;    }    return 0;}void SnakeMove(pSnake ps)//移动{    pSnakeNode nNode = NULL;    nNode = (SnakeNode*)malloc(sizeof(SnakeNode));    memset(nNode, 0, sizeof(SnakeNode));    nNode->x = ps->_pSnake->x;    nNode->y = ps->_pSnake->y;    //判断方向    switch (ps->_Dir)    {    case UP:        nNode->y--;        break;    case DOWN:        nNode->y++;        break;    case LEFT:        nNode->x -= 2;        break;    case RIGHT:        nNode->x += 2;        break;    default:        break;    }    //如果下个位置有食物    if (NextIsFood(ps,nNode))    {        EatFood(ps, nNode);        if (ps->_SleepTime > MAX_SPEED)        {            ps->_SleepTime -= ADD_SPEED;    //吃食物加速度        }        //打印分数        ps->_Mark++;    }    else    {        NoFood(ps, nNode);    }}int SnakeRun(pSnake ps)//控制方向{    short x = 0;    do    {        SetPos(66, 7);        printf("分数：%d", ps->_Mark);        if (0!=(x = GetAsyncKeyState(VK_DOWN))&&ps->_Dir!=UP)        {            ps->_Dir = DOWN;        }        else if (0 != (x = GetAsyncKeyState(VK_UP)) && ps->_Dir != DOWN)        {            ps->_Dir = UP;        }        else if (0 != (x = GetAsyncKeyState(VK_LEFT)) && ps->_Dir != RIGHT)        {            ps->_Dir = LEFT;        }        else if (0 != (x = GetAsyncKeyState(VK_RIGHT)) && ps->_Dir != LEFT)        {            ps->_Dir = RIGHT;        }        else if (GetAsyncKeyState(VK_ESCAPE))        {            SetPos(64, 20);            printf("游戏结束");            SetPos(64, 21);            printf("谢谢使用");            return 0;        }        else if (GetAsyncKeyState(VK_SPACE))        {            SetPos(64, 16);            printf("游戏暂停");            while (!GetAsyncKeyState(VK_SPACE))            {                if (GetAsyncKeyState(VK_ESCAPE))                {                    SetPos(64, 20);                    printf("游戏结束");                    SetPos(64, 21);                    printf("谢谢使用");                    return 0;                }            }            SetPos(64, 16);            printf("       ");        }        SnakeMove(ps);        //判断死否死亡        if(KillBySelf(ps))//撞蛇身        {            ps->_Status = KILL_BY_SELF;        }        if (KillByWall(ps))//撞墙        {            ps->_Status = KILL_BY_WALL;        }        if (-32767 == x)//加速        {            Sleep(MAX_SPEED);//打印蛇        }        else//恢复当前速        {            Sleep(ps->_SleepTime);//打印蛇        }    } while (ps->_Status == OK);//当蛇活着，循环    //跳出循环，说明蛇以及死了    //判断死亡方式    if (ps->_Status == KILL_BY_WALL)    {        SetPos(24,12);        printf("你被撞死了！");        return 1;    }    else if (ps->_Status == KILL_BY_SELF)    {        SetPos(24,12);        printf("你被自己咬死了！");        return 1;    }    return 0;}

test.c

#define _CRT_SECURE_NO_WARNINGS -1#include "snake.h"//进入游戏界面void menu(){    system("mode con cols=100 lines=30");//设置控制台窗口的大小    SetPos(40, 15);    printf("欢迎使用贪吃蛇");    SetPos(40, 17);    printf("按任意键开始");    getchar();    system("cls");}void SnakeStart(pSnake s)//贪吃蛇开始准备阶段{    srand((unsigned int)time(NULL));    system("mode con cols=100 lines=30");//设置控制台窗口的大小    DrawMap();    InitSnake(s);    CreatFood(s);}int main(){    menu();    Snake s;    memset(&s, 0, sizeof(Snake));    SnakeStart(&s);    SnakeRun(&s);    getchar();    //system("pause");    return 0;}

运行结果：
1.游戏开始界面

2.游戏界面

3.暂停界面

4.死亡界面


5.正常退出界面