Ball[] balls;

void setup() {
 
  size(600,600);
  smooth(); 
  noStroke();
  frameRate(12);
  
  balls = new Ball[1];
  for(int i=0;i<balls.length;i++) {
    balls[i] = new Ball( ); 
  }
}

void draw() {
  
   background(255);
  
   for (int i=0; i<balls.length; i++) {
     balls[i].update();
     balls[i].draw();
   }
   
}

class Ball {
  
  private float easing = 0.1;
  private float targetX, targetY;
  private int radius = 5;
  
  public float x, y;
  
  
  Ball() {
    x = random(width);
    y = random(height);
    targetX = random(width);
    targetY = random(height);
  }
 
  public void update() {
    ease();
  }
  
  private void ease() {    
    float dx,dy;
    float vx, vy;
    
    dx = targetX - x;
    dy = targetY - y;
    
    vx = dx*easing;
    vy = dy*easing;
    
    x += vx;
    y += vy;
    
    if ( (targetX - x < 0.1 ))  {
	targetX = random(width);
	println( "new target x: "+ targetX);
    }
    if (targetY - y < 0.1) {
	targetY = random(height);
	println("new target y:"+ targetY);
    }
  }
  

  public void draw() {
    fill(204, 102, 0);
    ellipse(x,y, radius, radius);
  } 
  
}