class Walker {
    constructor(x = 0, y = 0) {
        this.t = createVector(0, 10000)
        this.pos = createVector(x, y)
    }

    step() {
        let dx = map(noise(this.t.x), 0, 1, -1, 1)
        let dy = map(noise(this.t.y), 0, 1, -1, 1)

        this.pos.add(createVector(dx, dy))
        this.t.add(createVector(0.01, 0.01))
    }

    draw() {
        stroke(0)
        point(this.pos)
    }
}

let walker

function setup() {
    createCanvas(640, 240)
    background(255)
    walker = new Walker(320, 120)
}

function draw() {
    walker.step();
    walker.draw();
}