var y = [];            // x positions

var speed = [];        // speeds

var chosenColor = [];  // colors

​

var possibleColors = ["gold", "purple", "red", "silver"];

​

​

function setup() {

  createCanvas(800, 800);

}

​

function draw() {

  //background(220);

  for (var i=0; i < x.length; i=i+1) {

    fill(chosenColor[i]);

    ellipse(x[i], y[i], 40, 40);

​

    var dx = mouseX-x[i];

    var dy = mouseY-y[i];

    var dist = abs(dx)+abs(dy);

    if (dist > 0) {

      dx = dx/dist * speed[i];

      dy = dy/dist * speed[i];

      x[i] = x[i] + dx;

      y[i] = y[i] + dy;

    }

  }

}

​

function mouseClicked() {

  // create a new ball by adding an

  // element to arrays

  x.push(mouseX);

  y.push(mouseY);

  speed.push(random(2, 10));

​

  var randomNumber = random(possibleColors.length);

  var randomIndex = floor(randomNumber);

  var randomColor = possibleColors[randomIndex];

  chosenColor.push(randomColor);

}