// You can find the Turtle API reference here: https://turtletoy.net/syntax
Canvas.setpenopacity(-0.05);

// Global code will be evaluated once.
const turtle = new Turtle();
turtle.pendown();

// The walk function will be called until it returns false.
function walk(i) {
    x=-100
    y=-100
    while(x<100){
        y=-100
        while(y<100){
            zx=x+(Math.random()*2-1)
            zy=y+(Math.random()*2-1)
            zx=zx/70
            zy=zy/70
            zx0=zx
            zy0=zy
            a=0
            c=0
            while(a<i+1){
                if((zx*zx)+(zy*zy)>4){break;}
                zxt=(zx*zx)-(zy*zy)+zx0
                zy=2*(zx*zy)+zy0
                zx=zxt
                a++
            }
            zx=zx*70
            zy=zy*70
            turtle.jump(zy,zx+20)
            turtle.circle(0.1)
            y++
        }
        x++
    }
    return i < 128;
}