Bouncing Ball Hits the Button

mySketch
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boolean buttonClicked = false;
int buttonX;
int buttonY = 225;
int buttonW = 100;
int buttonH = 20;
int bX , bY , bD , bRad;
int speedX , speedY;
​
​
void setup(){
  size (500 , 500);
  bX = width/2;
  bY = 0;
  bD = 20;
  bRad = bD/2;
  speedX = 4;
  speedY = 4;
}
​
void draw(){
  background (249 , 191 , 255);
  if (buttonClicked == true){
  background (255 , 250 , 160);
  } else {
    buttonClicked = false;
  }
  buttonX = mouseX - buttonW/2;
  fill (66 , 244 , 225);
  rect (buttonX , buttonY , buttonW , buttonH);
  
  fill (192 , 255 , 160);
  ellipse (bX , bY , bD , bD);
  bX = bX + speedX;
  bY = bY + speedY;
  
  if ((bX > width) || (bX < 0)) {
  speedX = speedX * -1;
  }
  if ((bY > height) || (bY < 0)){
  speedY = speedY * -1;
  }
  if ( (bY+bRad >= buttonY) && 
    (bX-bRad <= buttonX + buttonW) && 
    (bX+bRad >= buttonX) && 
    (bY-bRad <= buttonY+buttonH) ) {
  if (bX < buttonX) {        
      speedX = -4;
      bX = buttonX - bRad;
    } else if (bX > buttonX + buttonW) {
      speedX = 4;
      bX = buttonX + bRad;
    } else if (bY < buttonY) {
      speedY = -4;
      bY = buttonY - bRad;
    } else if (bY > buttonY + buttonH) {
      speedY = 4;
      bY = buttonY + buttonH + bRad;
    }
    buttonClicked = !buttonClicked;
  }
}