random_walker.pyde

from walker import Walker
import sys

walker = Walker(250, 250)

def setup():
    print sys.version_info
    size(500, 500)
    background(255)

def draw():
    noStroke()
    fill(255, 5)
    rect(0, 0, width, height)
    walker.draw()

sketch.properties

mode.id=jycessing.mode.PythonMode
mode=Python

walker.py

from java.util import Random

class Walker(object):
    """hi """

    def __init__(self, x, y):
        self._last = PVector(x, y)
        self._pos = PVector(x, y)
        self.random_source = Random()

    def draw(self):
        stroke(0)
        self.x = self.x + self.rand()
        self.y = self.y + self.rand()
        line(self.x, self.y, self.last_x, self.last_y)

    @property
    def x(self):
        return self._pos.x

    @x.setter
    def x(self, value):
        self._last.x = self._pos.x
        self._pos.x = value

    @property
    def last_x(self):
        return self._last.x

    @property
    def y(self):
        return self._pos.y
    
    @y.setter
    def y(self, value):
        self._last.y = self._pos.y
        self._pos.y = value

    @property
    def last_y(self):
        return self._last.y

    def rand(self):
        return 3.0 * self.random_source.nextGaussian()