// You can find the Turtle API reference here: https://turtletoy.net/syntax
Canvas.setpenopacity(1);

// Global code will be evaluated once.
const turtle = new Turtle();
turtle.penup();
turtle.goto(-5, -60);
turtle.pendown();

let f = 4
let r = 4

// The walk function will be called until it returns false.
function walk(i) {
    turtle.forward(f + i);
    turtle.right(r + i);
    return i < 200;
}