shechichong.txt

一个经典的小程序 蛇吃虫 很有意思 C语言

#include<graphics.h>
#include<stdio.h>
#include<stdlib.h>
#include<dos.h>

#define N 200
#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);
void close(void);
void drawk(void);
void gameover(void);
void gameplay(void);
void prscore(void);

main()
{
init();
drawk();
gameplay();
close();
}

void init(void)
{
int gd=DETECT,gm;
initgraph(&gd,&gm,"c:\\tc");
cleardevice();
}

void drawk(void)
{
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(void)
{
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(void)
{
cleardevice();
prscore();
setcolor(RED);
settextstyle(0,0,4);
outtextxy(200,200,"GAME OVER!");
getch();
}

void prscore(void)
{
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(void)
{
getch();
closegraph();
}