c++语言实现贪吃蛇

1.完美的贪吃蛇 #include<windows.h>#include<time.h>#include<stdlib.h>#include<conio.h>#define N 21#include<iostream>using namespace std; void gotoxy(int x,int y)//位置函数{COORD pos;pos.X=2*x;pos.Y=y;SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),pos);}void color(int a)//颜色函数{SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),a);}void init(int apple[2])//初始化函数（初始化围墙、显示信息、苹果）{int i,j;//初始化围墙int wall[N+2][N+2]={{0}};for(i=1;i<=N;i++){for(j=1;j<=N;j++)wall[i][j]=1;}color(11);for(i=0;i<N+2;i++){for(j=0;j<N+2;j++){if(wall[i][j])cout<<"■";else cout<<"□" ;}cout<<endl;}gotoxy(N+3,1);//显示信息color(20);cout<<"按 W S A D 移动方向"<<endl;gotoxy(N+3,2);color(20);cout<<"按任意键暂停"<<endl;gotoxy(N+3,3);color(20);cout<<"得分："<<endl;apple[0]=rand()%N+1;//苹果apple[1]=rand()%N+1;gotoxy(apple[0],apple[1]);color(12);cout<<"●"<<endl;}int main(){int i,j;int** snake=NULL;int apple[2];int score=0;int tail[2];int len=3;char ch='p';srand((unsigned)time(NULL));init(apple);snake=(int**)realloc(snake,sizeof(int*)*len);for(i=0;i<len;i++)snake[i]=(int*)malloc(sizeof(int)*2);for(i=0;i<len;i++){snake[i][0]=N/2;snake[i][1]=N/2+i;gotoxy(snake[i][0],snake[i][1]);color(14);cout<<"★"<<endl;}while(1)//进入消息循环{tail[0]=snake[len-1][0];tail[1]=snake[len-1][1];gotoxy(tail[0],tail[1]);color(11);cout<<"■"<<endl;for(i=len-1;i>0;i--){snake[i][0]=snake[i-1][0];snake[i][1]=snake[i-1][1];gotoxy(snake[i][0],snake[i][1]);color(14);cout<<"★"<<endl;}if(kbhit()){gotoxy(0,N+2);ch=getche();}switch(ch){case 'w':snake[0][1]--;break;case 's':snake[0][1]++;break;case 'a':snake[0][0]--;break;case 'd':snake[0][0]++;break;default: break;}gotoxy(snake[0][0],snake[0][1]);color(14);cout<<"★"<<endl;Sleep(abs(200-0.5*score));if(snake[0][0]==apple[0]&&snake[0][1]==apple[1])//吃掉苹果后蛇分数加1，蛇长加1{score++;len++;snake=(int**)realloc(snake,sizeof(int*)*len);snake[len-1]=(int*)malloc(sizeof(int)*2);apple[0]=rand()%N+1;apple[1]=rand()%N+1;gotoxy(apple[0],apple[1]);color(12);cout<<"●"<<endl;gotoxy(N+5,3);color(20);cout<<score<<endl;}if(snake[0][1]==0||snake[0][1]==N||snake[0][0]==0||snake[0][0]==N)//撞到围墙后失败{gotoxy(N/2,N/2);color(30);cout<<"失败！！！"<<endl;for(i=0;i<len;i++)free(snake[i]);Sleep(INFINITE);exit(0);}}return 0;}

2.有缺陷的贪吃蛇 #include <stdio.h>#include <windows.h>#include <conio.h>#include <time.h>//游戏窗口#define FrameX 4   //游戏窗口左上角的X轴坐标#define FrameY 4   //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;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);}/******设置文本为绿色*****************************************************************/void Set_TextColor_Green (void){  HANDLE Handle = GetStdHandle(STD_OUTPUT_HANDLE);  SetConsoleTextAttribute(Handle, FOREGROUND_INTENSITY | FOREGROUND_GREEN);}/******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+3,FrameY+13);  //打印选择菜单 printf("Esc 退出游戏"); gotoxy(hOut,FrameX+2*Frame_width+3,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("╝"); 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  Set_TextColor_Green ();        //设置蛇为绿色 printf("贪吃蛇游戏");}/******结束菜单*******************************************************************/void over_game(){ system("cls"); printf("\n\n\n\n\n\n\n\n\t\t\t\t游戏结束\n\n\n"); Sleep(2000); getch();}/******菜单信息***************************************************************/print_information(HANDLE hOut,struct Snake *snake,struct Food *food){ gotoxy(hOut,FrameX+2*Frame_width+3,FrameY+1); printf("level : %d",snake->count/5+1);    //打印游戏等级 gotoxy(hOut,FrameX+2*Frame_width+3,FrameY+3); printf("score : %d",10*snake->count);    //打印游戏得分 gotoxy(hOut,FrameX+2*Frame_width+3,FrameY+5); printf("eat food : %d",snake->count);    //打印产生食物个数  gotoxy(hOut,FrameX+2*Frame_width+3,FrameY+7); printf("speed : %dms",snake->speed);    //打印游戏速度 gotoxy(hOut,FrameX+2*Frame_width+3,FrameY+9); printf("foodX : %d",food->x);      //打印食物的横坐标 gotoxy(hOut,FrameX+2*Frame_width+3,FrameY+11); printf("foodY : %d",food->y);      //打印食物的竖坐标}/******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  } }}/******随机产生食物*******************************************************************/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);   printf("⊙");   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;  } } 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 || ch==27 || snake->speed==50 )  {/* 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(1000);  }  }}int main(){ system("color 0D");  //设置文本为粉红色 start_game();   //开始游戏 over_game();  return 0;  //结束游戏}

3.贪吃蛇的简单移动 #include <stdio.h>#include <conio.h>#include <windows.h>#define BEG_X2#define BEG_Y1#define WID20#define HEI20HANDLE hout;typedef enum {UP, DOWN, LEFT, RIGHT} DIR;typedef struct Snake_body{COORD pos;//蛇身的位置struct Snake_body *next;//下一个蛇身struct Snake_body *prev;//前一个蛇身}SNAKE, *PSNAKE;PSNAKE head = NULL;//蛇头PSNAKE tail = NULL;//蛇尾//画游戏边框的函数void DrawBorder(){int i, j;COORD pos = {BEG_X, BEG_Y};for(i = 0; i < HEI; ++i){SetConsoleCursorPosition(hout, pos);for(j = 0; j < WID; ++j){if(i == 0)//第一行{if(j == 0)printf("┏");else if(j == WID - 1)printf("┓");elseprintf("━");}else if(i == HEI - 1)//最后一行{if(j == 0)printf("┗");else if(j == WID - 1)printf("┛");elseprintf("━");}else if(j == 0 || j == WID - 1)//第一列或最后一列printf("┃");elseprintf("  ");}++pos.Y;}}//添加蛇身的函数void AddBody(COORD pos){PSNAKE pnew = (PSNAKE)calloc(1, sizeof(SNAKE));pnew->pos = pos;if(!head){head = tail = pnew;}else{pnew->next = head;//新创建蛇身的next指向原先的蛇头head->prev = pnew;//原先的蛇头的prev指向新创建的蛇身head = pnew;//把新创建的蛇身作为新的蛇头}SetConsoleCursorPosition(hout, head->pos);printf("◎");}//蛇身移动的函数void MoveBody(DIR dir){PSNAKE ptmp;COORD pos = head->pos;switch(dir){case UP:if(head->pos.Y > BEG_Y + 1)--pos.Y;elsereturn;break;case DOWN:if(head->pos.Y < BEG_Y + HEI - 2)++pos.Y;elsereturn;break;case LEFT:if(head->pos.X > BEG_X + 2)pos.X -= 2;elsereturn;break;case RIGHT:if(head->pos.X < BEG_X + (WID - 2) * 2)pos.X += 2;else return;break;}AddBody(pos);//添加了一个新的蛇头ptmp = tail;//保存当前的蛇尾tail = tail->prev;if(tail)tail->next = NULL;SetConsoleCursorPosition(hout, ptmp->pos);printf("  ");free(ptmp);}int main(){int ctrl;DIR dir = RIGHT;//初始蛇的方向是向右的COORD pos = {BEG_X + 2, BEG_Y + HEI / 2};system("color 0E");system("mode con cols=90 lines=30");hout = GetStdHandle(STD_OUTPUT_HANDLE);printf("    ------------贪吃蛇的移动------------");DrawBorder();//自定义几个蛇的身体AddBody(pos);pos.X += 2;AddBody(pos);pos.X += 2;AddBody(pos);pos.X += 2;AddBody(pos);pos.X += 2;AddBody(pos);pos.X += 2;AddBody(pos);pos.X += 2;AddBody(pos);//控制蛇的移动while(ctrl = getch()){switch(ctrl){case 'w':if(dir == DOWN)continue;dir = UP;break;case 's':if(dir == UP)continue;dir = DOWN;break;case 'a':if(dir == RIGHT)continue;dir = LEFT;break;case 'd':if(dir == LEFT)continue;dir = RIGHT;break;case 'q':return 0;}MoveBody(dir);}return 0;}

#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 gamecircle();  void welcometogame();  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);      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("■");          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++) {          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));      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 gamecircle() { //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 welcometogame() { //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);      exit(0);  }    void gamestart() { //游戏初始化      system("mode con cols=100 lines=30");      welcometogame();      creatMap();      initsnake();      createfood();  }    int main() {      gamestart();      gamecircle();      endgame();      return 0;  }