C语言链表实现贪吃蛇游戏

#include<stdio.h>#include<time.h>#include<windows.h>#include<stdlib.h>#define U 1#define D 2#define L 3 #define R 4    //蛇的状态，U：上 ；D：下；L:左 R：右typedef struct SNAKE //蛇身的一个节点{  int x;  int y;  struct SNAKE *next;}snake;//全局变量//int score = 0, add = 10;//总得分与每次吃食物得分。int status, sleeptime = 200;//每次运行的时间间隔snake *head, *food;//蛇头指针，食物指针snake *q;//遍历蛇的时候用到的指针int endGamestatus = 0; //游戏结束的情况，1：撞到墙；2：咬到自己；3：主动退出游戏。//声明全部函数//void Pos();void creatMap();void initSnake();int biteSelf();void createFood();void cantCrossWall();void snakeMove();void pause();void runGame();void initGame();void endGame();void gameStart();void Pos(int x, int y)//设置光标位置{  COORD pos;  HANDLE hOutput;  pos.X = x;  pos.Y = y;  hOutput = GetStdHandle(STD_OUTPUT_HANDLE);//返回标准的输入、输出或错误的设备的句柄，也就是获得输入、输出/错误的屏幕缓冲区的句柄  SetConsoleCursorPosition(hOutput, pos);}void creatMap()//创建地图{  int i;  for (i = 0; i<58; i += 2)//打印上下边框  {    Pos(i, 0);    printf("■");//一个方块占两个位置    Pos(i, 26);    printf("■");  }  for (i = 1; i<26; i++)//打印左右边框  {    Pos(0, i);    printf("■");    Pos(56, i);    printf("■");  }}void initSnake()//初始化蛇身{  snake *tail;  int i;  tail = (snake*)malloc(sizeof(snake));//从蛇尾开始，头插法，以x,y设定开始的位置//  tail->x = 24;  tail->y = 5;  tail->next = NULL;  for (i = 1; i <= 4; i++)//初始长度为4  {    head = (snake*)malloc(sizeof(snake));    head->next = tail;    head->x = 24 + 2 * i;    head->y = 5;    tail = head;  }  while (tail != NULL)//从头到为，输出蛇身  {    Pos(tail->x, tail->y);    printf("■");    tail = tail->next;  }}//??int biteSelf()//判断是否咬到了自己{  snake *self;  self = head->next;  while (self != NULL)  {    if (self->x == head->x && self->y == head->y)    {      return 1;    }     self = self->next;  }  return 0;}void createFood()//随机出现食物{  snake *food_1;  srand((unsigned)time(NULL));//为了防止每次产生的随机数相同，种子设置为time  food_1 = (snake*)malloc(sizeof(snake));  while ((food_1->x % 2) != 0)  //保证其为偶数，使得食物能与蛇头对其  {    food_1->x = rand() % 52 + 2;  }  food_1->y = rand() % 24 + 1;  q = head;  while (q->next == NULL)  {    if (q->x == food_1->x && q->y == food_1->y) //判断蛇身是否与食物重合    {      free(food_1);      createFood();    }    q = q->next;  }  Pos(food_1->x, food_1->y);  food = food_1;  printf("■");}void cantCrossWall()//不能穿墙{  if (head->x == 0 || head->x == 56 || head->y == 0 || head->y == 26)  {    endGamestatus = 1;    endGame();  }}void snakeMove()//蛇前进,上U,下D,左L,右R{  snake * nexthead;  cantCrossWall();  nexthead = (snake*)malloc(sizeof(snake));  if (status == U)  {    nexthead->x = head->x;    nexthead->y = head->y - 1;    if (nexthead->x == food->x && nexthead->y == food->y)//如果下一个有食物//    {      nexthead->next = head;      head = nexthead;      q = head;      while (q != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      score = score + add;      createFood();    }    else                        //如果没有食物//    {      nexthead->next = head;      head = nexthead;      q = head;      while (q->next->next != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      Pos(q->next->x, q->next->y);      printf(" ");      free(q->next);      q->next = NULL;    }  }  if (status == D)  {    nexthead->x = head->x;    nexthead->y = head->y + 1;    if (nexthead->x == food->x && nexthead->y == food->y) //有食物    {      nexthead->next = head;      head = nexthead;      q = head;      while (q != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      score = score + add;      createFood();    }    else                //没有食物    {      nexthead->next = head;      head = nexthead;      q = head;      while (q->next->next != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      Pos(q->next->x, q->next->y);      printf(" ");      free(q->next);      q->next = NULL;    }  }  if (status == L)  {    nexthead->x = head->x - 2;    nexthead->y = head->y;    if (nexthead->x == food->x && nexthead->y == food->y)//有食物    {      nexthead->next = head;      head = nexthead;      q = head;      while (q != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      score = score + add;      createFood();    }    else                //没有食物    {      nexthead->next = head;      head = nexthead;      q = head;      while (q->next->next != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      Pos(q->next->x, q->next->y);      printf(" ");      free(q->next);      q->next = NULL;    }  }  if (status == R)  {    nexthead->x = head->x + 2;    nexthead->y = head->y;    if (nexthead->x == food->x && nexthead->y == food->y)//有食物    {      nexthead->next = head;      head = nexthead;      q = head;      while (q != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      score = score + add;      createFood();    }    else                     //没有食物    {      nexthead->next = head;      head = nexthead;      q = head;      while (q->next->next != NULL)      {        Pos(q->x, q->y);        printf("■");        q = q->next;      }      Pos(q->next->x, q->next->y);      printf(" ");      free(q->next);      q->next = NULL;    }  }  if (biteSelf() == 1)    //判断是否会咬到自己  {    endGamestatus = 2;    endGame();  }}void pause()//暂停{  while (1)  {    Sleep(300);    if (GetAsyncKeyState(VK_SPACE))    {      break;    }  }}void runGame()//控制游戏    {  Pos(64, 15);  printf("不能穿墙，不能咬到自己/n");  Pos(64, 16);  printf("用↑.↓.←.→分别控制蛇的移动.");  Pos(64, 17);  printf("F1 为加速，F2 为减速/n");  Pos(64, 18);  printf("ESC ：退出游戏.space：暂停游戏.");  Pos(64, 20);  printf("C语言研究中心 www.clang.cc");  status = R;  while (1)  {    Pos(64, 10);    printf("得分：%d ", score);    Pos(64, 11);    printf("每个食物得分：%d分", add);    if (GetAsyncKeyState(VK_UP) && status != D)    {      status = U;    }    else if (GetAsyncKeyState(VK_DOWN) && status != U)    {      status = D;    }    else if (GetAsyncKeyState(VK_LEFT) && status != R)    {      status = L;    }    else if (GetAsyncKeyState(VK_RIGHT) && status != L)    {      status = R;    }    else if (GetAsyncKeyState(VK_SPACE))    {      pause();    }    else if (GetAsyncKeyState(VK_ESCAPE))    {      endGamestatus = 3;      break;    }    else if (GetAsyncKeyState(VK_F1))    {      if (sleeptime >= 50)      {        sleeptime = sleeptime - 30;        add = add + 2;        if (sleeptime == 320)        {          add = 2;//防止减到1之后再加回来有错        }      }    }    else if (GetAsyncKeyState(VK_F2))    {      if (sleeptime<350)      {        sleeptime = sleeptime + 30;        add = add - 2;        if (sleeptime == 350)        {          add = 1; //保证最低分为1        }      }    }    Sleep(sleeptime);    snakeMove();  }}void initGame()//开始界面{  Pos(40, 12);  system("title C语言研究中心  www.clang.cc");  printf("欢迎来到贪食蛇游戏！");  Pos(40, 25);  printf("       C语言研究中心 www.clang.cc./n");  system("pause");  system("cls");  Pos(25, 12);  printf("用↑.↓.←.→分别控制蛇的移动， F1 为加速，2 为减速/n");  Pos(25, 13);  printf("加速将能得到更高的分数。/n");  system("pause");  system("cls");}void endGame()//结束游戏{  system("cls");  Pos(24, 12);  if (endGamestatus == 1)  {    printf("对不起，您撞到墙了。游戏结束.");  }  else if (endGamestatus == 2)  {    printf("对不起，您咬到自己了。游戏结束.");  }  else if (endGamestatus == 3)  {    printf("您的已经结束了游戏。");  }  Pos(24, 13);  printf("您的得分是%d/n", score);  while (getchar() != 'y')  {      printf("close?[y]");  }  exit(0);}void gameStart()//游戏初始化{  system("mode con cols=100 lines=30");  initGame();  creatMap();  initSnake();  createFood();}int main(){  gameStart();  runGame();  endGame();  return 0;}