#include <windows.h> 
void gotoxy(int x,int y) 
{ 
 COORD pos; 
 pos.X = x - 1; 
 pos.Y = y - 1; 
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),pos); 
} 

/*******************http://blog.csdn.net/lcsy000**********************/ 
 
#include<iostream> 
#include"gotoxy.h" 
#include<windows.h> 
#include<conio.h> 
#include<time.h> 
using namespace std; 
char direction_a,direction_b;  //方向a、b,用于方向的限制 
int scores,num,fool_x,fool_y,speed=100; //得分、num用于蛇身起步、食物x坐標(biāo)、食物y坐標(biāo) 
bool end;    //結(jié)束標(biāo)記 
struct node    //蛇身結(jié)點(diǎn) 
{ 
 int x,y; 
 node *next; 
}*head=NULL,*p,*tail; 
 
void init();    //初始化開始界面 
void start();    //游戲開始入場 
void init_snake();   //初始化蛇身 
void delete_snake();   //刪除蛇身 
void control();    //方向控制 
void move();    //蛇身移動 
void limit();    //方向限制 
void panduan();    //配合limit限制方向 
void fool();    //食物的出現(xiàn)以及食物被吞 
void isEnd();    //結(jié)束判斷 
void zhuangwei();   //撞尾判斷 
void zhuangqiang();   //撞墻判斷 
 
int main () 
{ 
 srand((unsigned)time(NULL)); 
 init(); 
 cin>>direction_a; 
 if(direction_a!='y'&&direction_a!='Y') 
 return 0; 
 do 
 { 
 system("cls");   //清除屏幕 
 end=false; 
 start(); 
 delete_snake(); 
 init_snake(); 
 scores=0; 
 num=0; 
 fool_x=(rand() % (79-2+1))+ 2; 
 fool_y=(rand() % (22-2+1))+ 2; 
 gotoxy(fool_x,fool_y); 
 cout<<"0"; 
 direction_a=getch(); 
 while(direction_a!='d'&&direction_a!='s'&&direction_a!='w') direction_a=getch(); 
 while(true) 
 { 
  if(num&&direction_a!='d'&&direction_a!='s'&&direction_a!='w'&&direction_a!='a') 
  { 
  direction_a=direction_b; 
  } 
  control(); 
  fool(); 
  Sleep(speed); 
  if(kbhit())   //kbhit 非阻塞函數(shù) 
  { 
  direction_a=getch(); //使用 getch 函數(shù)獲取鍵盤輸入 
  limit(); 
  } 
  panduan(); 
  num=1; 
  zhuangqiang(); 
  zhuangwei(); 
  if(end) break; 
 } 
 }while(direction_a=='y'||direction_a=='Y'); 
 return 0; 
} 
void init()    
{ 
 gotoxy(35,8); 
 cout<<"★貪 吃 蛇★"; 
 gotoxy(36,10); 
 cout<<"開始請輸入y:"; 
} 
void start()    
{ 
 for(int i=0;i<=79;i++) 
 { 
  Sleep(10); 
  cout<<"*"; 
  gotoxy(i+1,24); 
  cout<<"*"; 
  gotoxy(i+2,1); 
 } 
 gotoxy(1,2); 
 for(int i=0;i<=21;i++) 
 { 
  Sleep(20); 
  cout<<"*"; 
  for(int j=0;j<=77;j++) cout<<" "; 
  cout<<"*"; 
 } 
} 
void init_snake()     
{ 
 int n=3; 
 head=new node; 
 tail=head; 
 head->x=40; 
 head->y=12; 
 while(n--) 
 { 
 p=new node; 
 tail->next=p; 
 p->x=tail->x-1; 
 p->y=tail->y; 
 tail=p; 
 } 
 tail->next=NULL; 
 node *q=head->next; 
 gotoxy(head->x,head->y); 
 cout<<'#'; 
 while(q!=NULL) 
 { 
 gotoxy(q->x,q->y); 
 cout<<'*'; 
 q=q->next; 
 } 
} 
void delete_snake()    
{ 
 while(head!=NULL) 
 { 
 node *q=head; 
 head=q->next; 
 delete q; 
 } 
} 
void move()    
{ 
 gotoxy(tail->x,tail->y); 
 cout<<" "; 
 gotoxy(head->next->x,head->next->y); 
 cout<<'*'; 
 gotoxy(head->x,head->y); 
 cout<<'#'; 
 node *q=tail; 
 tail=head; 
 while(tail->next!=q) 
 { 
 tail=tail->next; 
 } 
 tail->next=NULL; 
 delete q; 
} 
void control()   
{ 
 node *q=new node; 
 q->next=head; 
 q->x=head->x; 
 q->y=head->y; 
 head=q; 
 switch(direction_a) 
 { 
 case 'w': head->y--;break; 
 case 's': head->y++;break; 
 case 'a': head->x--;break; 
 case 'd': head->x++;break; 
 default : break; 
 } 
 move(); 
} 
void limit()    
{ 
 
 if(direction_b=='s'&&direction_a=='w') direction_a='s'; 
 if(direction_b=='w'&&direction_a=='s') direction_a='w'; 
 if(direction_b=='a'&&direction_a=='d') direction_a='a'; 
 if(direction_b=='d'&&direction_a=='a') direction_a='d'; 
} 
void panduan()    
{ 
 if(direction_a=='s') direction_b='s'; 
 if(direction_a=='w') direction_b='w'; 
 if(direction_a=='d') direction_b='d'; 
 if(direction_a=='a') direction_b='a'; 
} 
void fool()    
{ 
 node *q; 
 if(head->x==fool_x&&head->y==fool_y) 
 { 
 fool_x=(rand() % (79-2+1))+ 2; 
 fool_y=(rand() % (22-2+1))+ 2; 
 gotoxy(fool_x,fool_y); 
 cout<<"0"; 
 num=0; 
 scores++; 
 node *q=new node; 
 q->x=tail->x; 
 q->y=tail->y; 
 tail->next=q; 
 tail=q; 
 tail->next=NULL; 
 } 
 q=head; 
 while(q!=NULL) 
 { 
 if(q->x==fool_x&q->y==fool_y) 
 { 
  fool_x=(rand() % (79-2+1))+ 2; 
  fool_y=(rand() % (22-2+1))+ 2; 
  gotoxy(fool_x,fool_y); 
  cout<<"*"; 
  q=head; 
  continue; 
 } 
 q=q->next; 
 } 
} 
void isEnd()    
{ 
 end=true; 
 Sleep(600); 
 system("cls"); 
 gotoxy(35,8); 
 cout<<"您 輸 啦 ~"; 
 gotoxy(33,10); 
 cout<<"您的分?jǐn)?shù)為: "<<scores; 
 gotoxy(31,12); 
 cout<<"重新開始請輸入y:"; 
 cin>>direction_a; 
} 
void zhuangwei()   
{ 
 node *q=head->next; 
 while(q!=NULL) 
 { 
 if(head->x==q->x&&head->y==q->y) 
 { 
  isEnd(); 
  break; 
 } 
 q=q->next; 
 } 
} 
void zhuangqiang()   
{ 
 if(head->x==80||head->x==1||head->y==24||head->y==1) 
 isEnd(); 
}