// You can find the Turtle API reference here: https://turtletoy.net/syntax
Canvas.setpenopacity(.2);

// Global code will be evaluated once.
const turtle = new Turtle();
turtle.penup();
turtle.goto(-0,-20);
turtle.pendown();

// The walk function will be called until it returns false.
function walk(i) {
    turtle.pendown();
    turtle.forward(i*0.005);
    turtle.circle(100);
    turtle.penup();
    turtle.forward(3);
    turtle.right(7);
    return i < 360*4;
}