float redrad;
int xr,xg,xb,xy,xbl;
int yr=height;
int yg=height/2;
int yb=height/3;
int yy=height/4;
int ybl=height/2;
int xrdir =  (int)(random(20)); 
int yrdir =  (int)(random(7)); 
int xgdir = 12;
int ygdir = 5;
int xbdir = 10;
int ybdir = 8;
int xydir = 2;
int yydir = 4;
int xbldir = 40;
int ybldir = 45;
float rpos;     
float speed;  
float bouncy,bouncb,bouncg ;
float rb;
float lin1,lin2;

void setup() {
  size(500,500);
  background(200,0,0);
  ellipseMode(CENTER_DIAMETER);

}

void loop() {
  background(156,156,156);
  stroke(0);
  lin1=mouseX;
  lin2=mouseY;
 line(0, lin1, 500, lin1); 
 line(lin2, 0, lin2, 500); 

blackBall();
}



void blackBall(){
    fill(255,0,0);
    ellipse(xbl,ybl,35,35);
  xbl= xbl+xbldir;
  ybl= ybl+ybldir;
  if(xbl>lin1) {
    xbldir = -12;
  }
   else if(xbl<lin1) xbldir = 12;
  if(ybl>lin2) ybldir = -10;
  else if(ybl<lin2) ybldir = 10;
}