c语言编程 碰撞的小球 小球碰撞游戏程序代码 求注释 越详细越好》》》

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#include "GRAPHICS.H"

#include "MATH.H"

#include "stdio.h"

#define LEFT 0x4b00

#define RIGHT 0x4d00

#define ESC 0x011b

int x,y,x1,y1,key,t1,t2,keyx,keylong,keymove,over=0,i,tt=0,fast;

int ballx[9]={53,183,263,120,86,390,40,350,600};

int bally[9]={158,139,160,113,30,213,120,263,281};

int ballz[9]={0};

float ls;

win()

{

float lx,ly,l1;

for(i=0;i<9;i++)

{

if(ballz[i]==1)

continue;

lx=(float)(ballx[i]-x);

ly=(float)(bally[i]-y);

l1=lx*lx+ly*ly;

ls=sqrt(l1);

if((int)ls<17)

{

tt++;

fast-=50;

if(i%2==0)

keymove+=5;

else

{

setcolor(0);

rectangle(keyx,460,key+keylong,470);

keylong-=10;

setcolor(YELLOW);

rectangle(keyx,460,keyx+keylong,470);

}

ballz[i]=1;

setcolor(0);

circle(ballx[i],bally[i],10);

if(y

if(x

{

t1=-1;

t2=-1;