Canvas.setpenopacity(.2)

particles = []
for (i = 0; i < 100; i++) {
    particles.push(
        {
            turtle: new Turtle(), 
            speed:Math.random() * 2 - 1, 
            angle:Math.random() * 2 - 1
        
        })
}

function walk(i) {
    mean = [0, 0]
    for (particle of particles) {
        turtle = particle.turtle

        lerpedPos = lerp2D(turtle.position(), mean, 0.2)
        turtle.goto(lerpedPos)

        turtle.forward(particle.speed)
        turtle.right(particle.angle)
        
        mean[0] = mean[0]+turtle.position()[0]
        mean[1] = mean[1]+turtle.position()[1]
    }
    mean[0] /= particles.length
    mean[1] /= particles.length

    return i < 2000
}

function lerp2D(a, b, amount) {
    newPos = []
    newPos[0] = a[0] * (1 - amount) + b[0] * amount
    newPos[1] = a[1] * (1 - amount) + b[1] * amount
    return newPos
}