MyCircle c1;
float circleX = 250;
float circleY = 250;  // Position of circle
int circleSize = 50;   // Diameter of circle

void setup() {
  ellipseMode(CENTER);
  size(500, 500);
  fill(255,150);
  noStroke();
  c1 = new MyCircle(circleX, circleY, circleSize);
  smooth();
}

void draw() {
  fill(255,150);
  background(0);
  c1.display();
  c1.move(mouseX, mouseY, 40);

}


class MyCircle
{
  float xpos; // xposition
  float ypos ; // yposition
  int d;

  MyCircle(float ixp, float iyp, int id) {
    xpos = ixp;
    ypos = iyp;
    d = id;
  }

  void move (float posX, float posY, float damping) {
    float dif = ypos - posY;
    if (abs(dif) > 1) {
      ypos -= dif/damping;
    }
    dif = xpos - posX;
    if (abs(dif) > 1) {
      xpos -= dif/damping;
    }
  }

  void display() {
    ellipse(xpos, ypos, d, d);
  }
}