#define N 200
#include<graphics.h>
#include<stdlib.h>
#include<dos.h>
#define LEFT 0x4b00
#define RIGHT 0x4d00
#define DOWN 0x5000
#define UP 0x4800
#define Esc 0x011b
int i,key;
int score=0;
int gamespeed=50000;
struct Food
{int x;
int y;
int yes;
}food;
struct Snake
{int x[N];
int y[N];
int node;
int direction;
int life;
}snake;
void Init();
void Close();
void DrawK();
void GamePlay();
void GameOver();
void PrScore();
void main()
{ Init();
  DrawK();
  GamePlay();
  Close();

}
void Init()
{int gd=DETECT,gm;
initgraph(&gd,&gm,"F:\\tuoboc2");/*此处为turboc的路径，读者可以根据自己的电脑而改*/
cleardevice();
}
void DrawK()
{setbkcolor(LIGHTGREEN);
setcolor(11);
setlinestyle(SOLID_LINE,0,THICK_WIDTH);
for(i=50;i<=600;i+=10)
{rectangle(i,40,i+10,49);
  rectangle(i,451,i+10,460);
}
for(i=40;i<=450;i+=10)
{rectangle(50,i,59,i+10);
  rectangle(601,i,610,i+10);
}
}
void GamePlay()
{randomize();
food.yes=1;
snake.life=0;
snake.direction=1;
snake.x[0]=100;snake.y[0]=100;
snake.x[1]=110;snake.y[1]=100 ;
snake.node=2;
PrScore();
while(1)
{while(!kbhit())
  { if(food.yes==1)
    {food.x=rand()%400+60;
     food.y=rand()%350+60;
     while(food.x%10!=0)
    food.x++;
     while(food.y%10!=0)
    food.y++;
     food.yes=0;
    }
    if(food.yes==0)
    {setcolor(GREEN);
     rectangle(food.x,food.y,food.x+10,food.y-10);
    }
    for(i=snake.node-1;i>0;i--)
    {snake.x[i]=snake.x[i-1];
     snake.y[i]=snake.y[i-1];
    }
    switch(snake.direction)
    {case 1:
     snake.x[0]+=10;break;
     case 2:
     snake.x[0]-=10;break;
     case 3:
     snake.y[0]-=10;break;
     case 4:
     snake.y[0]+=10;break;
    }
    for(i=3;i<snake.node;i++)
    {
     if(snake.x[i]==snake.x[0]&&snake.y[i]==snake.y[0])
      { GameOver();
    snake.life=1;
    break;
      }
    }
    if(snake.x[0]<55||snake.x[0]>595||snake.y[0]<55||snake.y[0]>455)
    {GameOver();
     snake.life=1;
    }
    if(snake.life==1)
    break;
    if(snake.x[0]==food.x&&snake.y[0]==food.y)
    {setcolor(0);
     rectangle(food.x,food.y,food.x+10,food.y-10);
     snake.x[snake.node]=-20;
     snake.y[snake.node]=-20;
     snake.node++;
     food.yes=1;
     score+=10;
     PrScore();
    }
   setcolor(4);
    for(i=0;i<snake.node;i++)
     rectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10);
    delay(gamespeed);
    setcolor(0);
    rectangle(snake.x[snake.node-1],snake.y[snake.node-1],snake.x[snake.node-1]+10,snake.y[snake.node-1]-10);
  }
  if(snake.life==1)
    break;
  key=bioskey(0);
  if(key==Esc)
    break;
  else if(key==UP&&snake.direction!=4)
     snake.direction=3;
  else if(key==RIGHT&&snake.direction!=2)
     snake.direction=1;
  else if(key==LEFT&&snake.direction!=1)
     snake.direction=2;
  else if(key==DOWN&&snake.direction!=3)
     snake.direction=4;
}
}
void GameOver()
{
cleardevice();
PrScore();
setcolor(RED);
settextstyle(3,0,4);
outtextxy(100,100,"Mengmeng,i love you!");
getch();
}
void PrScore()
{char str[10];
setfillstyle(SOLID_FILL,YELLOW);
bar(50,15,220,35);
setcolor(6);
settextstyle(0,0,2);
sprintf(str,"score:%d",score);
outtextxy(55,20,str);
}
void Close()
{ getch();
  closegraph();
}

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