Circle Bouncing Off Button

boolean bgisyellow = false;

int rX, rY, rW, rH;

int x, y, w, h;

​

int speed = 5;

​

void setup () {

  size(500, 500);

  fill(#FFA00F); //orange

  rX = width/4;

  rY = height/4;

  rW = 100;

  rH = 100;

  x = 25;

  y = 175;

  w = 50;

  h = 50;

}

​

void draw () {

  background(#03F6FC); //blue background

  if (bgisyellow == true) {

    background (#FCFC03);

  }

  fill(#E8A107);

  stroke(255);

  rect(rX, rY, rW, rH);

​

  fill(#5DE802); //green

  stroke(#E82507); //red

  ellipse(x, y, w, h);

  x = x + speed;

​

  if ((x > 95) || (x < 25) ) {

    speed = speed * -1;

  }

}

​

void mousePressed () {

  if ((mouseX < 225) && (mouseX > width/4)) {

    if ((mouseY < 225) && (mouseY > height/4))

      if (bgisyellow == true) {

        bgisyellow = false;

      } else {

      bgisyellow = true;

    }

  }

}