#include <graphics.h>

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#include <dos.h>

#define NULL 0

#define len sizeof(struct liner)

struct liner {int x; int y; struct liner *next; };

int n; struct liner *creat(int m)

{ int i; struct liner *head,*p1,*p2;

n=0;

p1=(struct liner *)malloc(len);

p1->x=30;p1->y=20;

head=NULL;

p2=p1;

for(i=0;i<=m-1;i++)

{ n++;

　if (n==1) head=p1;

　else p2->next=p1;

　p2=p1; p1=(struct liner *)malloc(len);

　 p1->x=30;p1->y=20+2-i;

}

p2->next=head; return(head); }

struct liner *locate(struct liner *head) { return(head->next); }

void *picture(int a) { void *p; int size; if(a) {setfillstyle(1,4);

bar(0,0,10,10);

rectangle(1,1,9,9);

rectangle(4,4,6,6);}

size=imagesize(0,0,10,10);

p=malloc(size);

getimage(0,0,10,10,p);

cleardevice();

return(p); }

void draw(int x,int y,void *p)

{putimage(x*10,y*10,p,COPY_PUT);}

struct liner *insert(struct liner *head,int x,int y)

{ struct liner *p; p=(struct liner *)malloc(len);

p->x=x;p->y=y;

p->next=head->next;

head->next=p;

head=p;

n++;

return(head); }

int search(int x,int y,struct liner *head)

{ int k; struct liner *p; p=head;

for(k=0;k<=n-1;k++) {if ((p->x==x) && (p->y==y)) return(1);

else p=locate(p); } return(0); }

main()

{

int gm=2,gd=VGA;

int h; int time=300,mark=0;

int key,hi,lo;

void *p1,*p2; int i,j;

int x,y;

int flag=1,bl=0,musicflag=0;

struct liner *head,*p;

clrscr();

gotoxy(34,10); printf("JieLong");

gotoxy(27,11); printf("CopyRight 1995 by ljh");

gotoxy(29,17); printf("MUISC=ON|OFF[y/n]n");

gotoxy(46,17);

if(tolower(getchar())=='y') musicflag=1;

else musicflag=0;

initgraph(&gd,&gm,"c:\\tc"); p2=picture(0);

p1=picture(1); head=creat(3);

p=head; setfillstyle(1,1); bar(0,0,630,349);

rectangle(0,0,639,349);

for(i=0;i<=2;i++)

{ draw(p->x,p->y,p1); p=locate(p); } x=rand()%60+1; y=rand()%15+1; draw(x,y,p1);

lo=0; p=head; hi=72; h=72;

while(flag) { if(musicflag)

{ sound(400); delay(10); nosound(); }

if(kbhit()) {key=bioskey(0);

if(kbhit()) getch(); lo=key & 0x00ff;

if(lo==0) hi=(key & 0xff00)>>8; } i=p->x; j=p->y;

p=locate(p); draw(p->x,p->y,p2);

{switch(hi) { case 72:if(h!=80) {h=72;j--;}

else {hi=80;j++;} break; case 80:if(h!=72) {h=80;j++;}

else {hi=72;j--;} break; case 75:if(h!=77) {h=75;i--;}

else {hi=77;i++;} break; case 77:if(h!=75) {h=77;i++;}

else {hi=75;i--;} break; }

if((x==i)&&(y==j)) { if(musicflag) { sound(1000); delay(100); nosound(); }

p=insert(p,x,y);

x=((unsigned int)rand())%50+1;

y=((unsigned int)rand())%25+1;

draw(x,y,p1); gotoxy(40,25);

printf("%d",++mark*100); }

else {if ((i<1)||(i>63)||(j<1)||(j>34)||search(i,j,p))

{if(bl==0) flag=0;}

else { p->x=i;p->y=j; draw(i,j,p1);} }

delay(time--);

if (time<=40) time=100; bl=0; } }

if(musicflag) { sound(1000); delay(100); sound(700); delay(50); sound(1090); delay(100); nosound(); } closegraph(); gotoxy(30,10); printf("GAME OVER"); getch(); }