void GameStart(pSnake ps)
{//0.先设置窗口的大小 然后把光标隐藏system("mode con cols=100 lines=30");//30行 100列system("title 贪吃蛇");HANDLE houtput=GetStdHandle(STD_OUTPUT_HANDLE);//隐藏光标操作//定义一个光标信息的结构体CONSOLE_CURSOR_INFO cursor_info;//获取和houtput句柄相关的控制台上的光标信息 并存放在cursor_info中GetConsoleCursorInfo(houtput, &cursor_info);//获取控制台光标信息cursor_info.bVisible = false;//设置和houtput句柄相关的控制台上的光标信息SetConsoleCursorInfo(houtput, &cursor_info);//1.打印欢迎页面  //2.功能介绍WelcomeToGame();//3.绘制地图CreatMap();//4.创建蛇InitSnake(ps);//5.创建食物CreateFood(ps);
}

2.欢迎页面及功能介绍(WelcomeToGame）

打印欢迎页面

在我们使用光标位置 之前  我们封装一个函数SetPos  

void SetPos(short x, short y)//封装一个函数SetPos 光标位置
{HANDLE houtput = NULL;//获取标准输出的句柄(⽤来标识不同设备的数值)houtput = GetStdHandle(STD_OUTPUT_HANDLE);//定位光标位置COORD pos = { x, y };SetConsoleCursorPosition(houtput, pos);
}

void WelcomeToGame()
{SetPos(45, 14);wprintf(L"欢迎来到贪吃蛇小游戏\n");SetPos(46, 20);system("pause");system("cls");//清除控制台信息SetPos(30, 14);wprintf(L"用↑   ↓   ←   → 来控制蛇的移动 按F3加速 F4减速\n");SetPos(34, 15);wprintf(L"加速能够得到更高的分数");SetPos(46, 20);system("pause");system("cls");//紧接着下面应该是地图绘制
}

代码实现结果：

3.绘制地图（CreatMap）

绘制地图就是将墙体打印出来  因为这里是宽字符打印  所有打印使用wprintf函数  打印格式串前使用L   绘制地图的关键是算好光标的坐标  才能在想要的位置打印墙体

为墙体打印的宽字符写个宏：

#define WALL L'□'

这里的易错点也就是坐标的计算

代码如下：

void CreatMap()
{//27行 58列的棋盘//上int i = 0;for (i = 0; i < 29; i++){//□wprintf(L"%lc", WALL);}//下SetPos(0, 26);for (i = 0; i < 29; i++)wprintf(L"%lc", WALL);//左for (i = 1; i <= 25; i++){SetPos(0, i);wprintf(L"%lc", WALL);}//右for (i = 1; i <= 25; i++){SetPos(56, i);wprintf(L"%lc", WALL);}//getchar();
}

4.创建蛇（初始化蛇身）（InitSnake）

void InitSnake(pSnake ps)
{int i = 0;pSnakeNode cur = NULL;for (i = 0; i < 5; i++){cur = (pSnakeNode)malloc(sizeof(Snakenode));if (cur == NULL){perror("InitSnake()::malloc()");return;}cur->next = NULL;cur->x =POS_X +i*2;//显示 + 未使用的表达式结果cur->y = POS_Y;//头插法插入链表if (ps->_pSnake == NULL)//空链表  //蛇头{ps->_pSnake = cur;}else//非空{cur->next = ps->_pSnake;ps->_pSnake = cur;}}cur = ps->_pSnake;while (cur){SetPos(cur->x, cur->y);wprintf(L"%lc", BODY);cur = cur->next;}//设置贪吃蛇的属性ps->_dir = RIGHT;//默认向右ps->_score = 0;ps->_food_weight = 10;ps->_sleep_time = 200;//毫秒ps->_status = OK;/*getchar();*/为什么我的代码只打印一个●
}

#define BODY L'●'

#define FOOD L'★'

void CreateFood(pSnake ps)
{int x = 0;int y = 0;//x = rand()%53+2;//x:2~54---0~52 //还要保证x是偶数//y = rand()%25+1;//y:1~25---0~24
again:do{x = rand() % 53 + 2;//x:2~54---0~52 //还要保证x是偶数y = rand()%25+1;//y:1~25---0~24} while (x % 2 != 0);//x和y的坐标不能跟蛇的身体相冲突pSnakeNode cur = ps->_pSnake;while (cur){if (x == cur->x && y == cur->y){goto again;}cur = cur->next;}//创捷食物结点pSnakeNode pFood=(pSnakeNode)malloc(sizeof(Snakenode));if (pFood == NULL){perror("CreateFood()::malloc()");}pFood->x = x;pFood->y = y;pFood->next = NULL;SetPos(x, y);wprintf(L"%lc", FOOD);ps->_pFood = pFood;
}

void PrintHelpInfo()
{SetPos(64, 10);wprintf(L"%ls", L"不能穿墙，不能咬到自己");SetPos(64, 11);wprintf(L"%ls", L"用↑   ↓   ←   → 来控制蛇的移动 \n");SetPos(64, 12);wprintf(L"%ls", L"按F3加速 F4减速");SetPos(64, 13);wprintf(L"%ls", L"按ESC退出游戏  空格暂停游戏");SetPos(64, 14);wprintf(L"%ls", L"made in LiFeiFei");
}

void KillByWall(pSnake ps)
{if (ps->_pSnake->x == 0 || ps->_pSnake->x == 56 ||ps->_pSnake->y == 0 || ps->_pSnake->y == 26){ps->_status = KILL_BY_WALL;}
}void KillBySelf(pSnake ps)
{pSnakeNode cur = ps->_pSnake->next;//cur指向蛇身while (cur){if (cur->x == ps->_pSnake->x && cur->y == ps->_pSnake->y){ps->_status = KILL_BY_SELF;break;}cur = cur->next;}
}

//获取按键情况 如果按键最小位为1 说明已按过
#define KEY_PRESS(VK) ( (GetAsyncKeyState(VK) & 0x1) ? 1 : 0 )

void NoFood(pSnakeNode pn, pSnake ps)
{//头插法pn->next = ps->_pSnake;ps->_pSnake = pn;pSnakeNode cur = ps->_pSnake;while (cur->next->next != NULL){SetPos(cur->x, cur->y);wprintf(L"%lc", BODY);cur = cur->next;}//把最后一个结点打印成空格SetPos(cur->next->x, cur->next->y);printf("  ");//释放最后一个结点free(cur->next);//将倒数第二个结点的地址域置为NULLcur->next = NULL;
}int NextIsFood(pSnakeNode pn, pSnake ps)
{return (ps->_pFood->x == pn->x && ps->_pFood->y == pn->y);
}void EatFood(pSnakeNode pn, pSnake ps)
{//头插法ps->_pFood->next = ps->_pSnake;ps->_pSnake = ps->_pFood;//释放下一个位置的结点（我们设置了一个食物结点 和下一个结点 ）free(pn);pn = NULL;pSnakeNode cur = ps->_pSnake;//打印蛇while (cur){SetPos(cur->x, cur->y);wprintf(L"%lc", BODY);cur = cur->next;}ps->_score += ps->_food_weight;//重新创建食物CreateFood(ps);
}void pause()//暂停
{while (1){Sleep(200);if (KEY_PRESS(VK_SPACE)){break;}}
}

void SnakeMove(pSnake ps)
{//创建一个结点 表示蛇即将到的下一个结点pSnakeNode pNextNode=(pSnakeNode)malloc(sizeof(Snakenode));if (pNextNode == NULL){perror("SnakeMove()::malloc()");return;}switch (ps->_dir){case UP:pNextNode->x = ps->_pSnake->x;pNextNode->y = ps->_pSnake->y-1;break;case DOWN:pNextNode->x = ps->_pSnake->x;pNextNode->y = ps->_pSnake->y+1;break;case LEFT:pNextNode->x = ps->_pSnake->x-2;pNextNode->y = ps->_pSnake->y;break;case RIGHT:pNextNode->x = ps->_pSnake->x+2;pNextNode->y = ps->_pSnake->y;break;}//检测下一个坐标处是否是食物if (NextIsFood(pNextNode,ps)){EatFood(pNextNode, ps);}else{NoFood(pNextNode, ps);}//检测蛇是否撞墙KillByWall(ps);//检测蛇是否撞到自己KillBySelf(ps);
}

void GameRun(pSnake ps)
{//打印帮助信息PrintHelpInfo();do{//打印总分数 和食物的分值SetPos(64, 8);printf("总分数：%d\n", ps->_score);SetPos(64, 9);printf("当前食物的分值：%2d\n", ps->_food_weight);if (KEY_PRESS(VK_UP) && ps->_dir != DOWN){ps->_dir = UP;}else if (KEY_PRESS(VK_DOWN) && ps->_dir != UP){ps->_dir = DOWN;}else if (KEY_PRESS(VK_LEFT) && ps->_dir != RIGHT){ps->_dir = LEFT;}else if (KEY_PRESS(VK_RIGHT) && ps->_dir != LEFT){ps->_dir = RIGHT;}else if (KEY_PRESS(VK_SPACE))//空格{pause();}else if (KEY_PRESS(VK_ESCAPE))//ESC{//正常退出游戏ps->_status = END_NORMAL;//退出游戏break;}else if (KEY_PRESS(VK_F3))//F3加速---休眠时间减少{if (ps->_sleep_time >= 80)//初始休眠时间为200-80=120 减4次{//最小休眠时间为50ps->_sleep_time -= 30;ps->_food_weight += 2;//食物初始分值为10  ⼀个⻝物分数最⾼是20分}}else if (KEY_PRESS(VK_F4))//F4减速{if (ps->_sleep_time < 320)//200 230 260 290 320{						  //10   8   6   4   2ps->_sleep_time += 30;ps->_food_weight -= 2;//⼀个⻝物分数最低是2分}}SnakeMove(ps);//蛇走一步的过程Sleep(ps->_sleep_time);} while (ps->_status == OK);
}

void GameEnd(pSnake ps)
{SetPos(24, 12);switch (ps->_status){case END_NORMAL:printf("有事 不玩了\n");break;case KILL_BY_WALL:printf("撞个墙玩玩\n");break;case KILL_BY_SELF:printf("吃个自己吧\n");break;}//释放蛇身的链表pSnakeNode cur = ps->_pSnake;while (cur){pSnakeNode del = cur;cur = cur->next;free(del);}
}