class BouncingCircle {
  float xPos;
  float yPos;
  float xSpeed;
  color fillColor;

  BouncingCircle(color tempColor, float tempXPos, float tempYPos, float tempXSpeed) {
    fillColor = tempColor;
    xPos = tempXPos;
    yPos = tempYPos;
    xSpeed = tempXSpeed;
  }

  void display() {
    stroke(0);
    fill(fillColor);
    ellipse(xPos, yPos, 80, 80);
  }

  void bounce() {
    xPos = xPos + xSpeed;

    if ((xPos > width) || (xPos < 0)) {
      xSpeed = xSpeed * -1;
    }
  }
}