Bouncing Ball #include<graphics.h> #include<conio.h> #include<alloc.h> #include<dos.h> #include<stdlib.h> void *ball; void image() { //ball setcolor(RED); setfillstyle(SOLID_FILL,RED); fillellipse(10,10,10,10); ball=malloc(imagesize(0,0,20,20)); getimage(0,0,20,20,ball); cleardevice(); } void main() { int gm,gd=DETECT; initgraph(&gd,&gm,""); int l=getmaxx()/2,r=0,t=0,b=0; int x=1,y=1; int s=0,key=0; int xstep=1,ystep=1; image(); setbkcolor(GREEN); while(key!=27) { while(!kbhit()){ putimage(l,t,ball,XOR_PUT); delay(5); putimage(l,t,ball,XOR_PUT); if(l>=getmaxx()||l<=0){x*=-1;sound(1000);s=0;xstep=x*(random(4)+1);ystep=y *(random(3)+1);if(l<=0)l=0;else l=getmaxx();} if(t>=getmaxy()||t<=0){y*=-1;sound(1000);s=0;ystep=y*(random(4)+1);xstep=x *(random(3)+1);if(t<=0)t=0;else t=getmaxy();} l+=x+xstep; t+=y+ystep; s++; if(s==5) {nosound();} } key=getch(); } closegraph(); }
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