var vPosY = [] 

​

var deltaX; 

var deltaY; 

​

var fator = 20; 

​

var qtBolas = 10 

var diamentro = 25

​

function setup() {

  frameRate(8)

  createCanvas(400, 400);

  for ( i = 0; i < qtBolas; i++ )

  { 

    vPosX[i] = 200 

    vPosY[i] = 200

  }

  deltaX = 0

  deltaY = 0

}

​

function draw() {

  background(220);

  if ( mouseIsPressed ) {

    dX = (mouseX - vPosX[0])  

    dY = (mouseY - vPosY[0])

    modulo = Math.sqrt(dX**2 + dY**2)

    // vessor 

    deltaX = (dX/modulo)* diamentro

    deltaY = (dY/modulo)* diamentro

  }

  for ( i = qtBolas - 1; i >= 1; i--) {

    vPosX[i] = vPosX[i-1]

    vPosY[i] = vPosY[i-1] 

    fill(0)

    ellipse(vPosX[i], vPosY[i], diamentro, diamentro)

  }

  vPosX[0] = vPosX[0] + deltaX 

  vPosY[0] = vPosY[0] + deltaY 

  fill('red')

  ellipse(vPosX[0], vPosY[0], 30, 30)

}