NatureOfCode2/challenge-53.html at master · brlebtag/NatureOfCode2 · GitHub

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<html>
    <head>
        <title>Code Challenge # 53 - Random Walker + Vector + Levy Flight</title>
        <script src="https://cdn.jsdelivr.net/npm/p5@1.5.0/lib/p5.min.js"></script>
        <script>
            var pos;
            var prev;

            function setup() {
                createCanvas(800, 600);
                background(51);
                pos = createVector(width/2, height/2);
                prev = pos.copy();
            }

            function draw() {
                stroke(255);
                strokeWeight(3);
                // point(pos.x, pos.y);
                line(pos.x, pos.y, prev.x, prev.y);
                prev.set(pos);

                var r = floor(random(4));
                var step = p5.Vector.random2D();

                var r = random(100);

                if (r < 1) {
                    step.mult(25, 100);
                } else {
                    step.setMag(2);
                }


                pos.add(step);
            }
        </script>
    </head>
</html>