Pyp5js Random Walke

random_walker.py

# Code by @Vamoss
# Run at Pyp5js editor
# https://abav.lugaralgum.com/pyp5js/pyodide/

positions = []
GRID_SIZE = 20

def setup():
    global positions
    size(500, 500)
    background("#1a0633")
    colors = []
    colors = [color("#1a0633"), color("#1a0633"), color("#581845"), color("#900C3F"), color("#C70039"), color("#FF5733"), color("#FFC30F"), color("#581845")]
    l = len(colors)
    for i in range(floor(l/2)):
        position = Position(round(width / 2 / GRID_SIZE) * GRID_SIZE, round(height / 2 / GRID_SIZE) * GRID_SIZE, colors[(i*2+0)%l], colors[(i*2+1)%l])
        positions.append(position)

def draw():
    global positions
    for position in positions:
        position.curX += round(random(-1, 1)) * GRID_SIZE
        position.curY += round(random(-1, 1)) * GRID_SIZE
        position.curX = constrain(position.curX, GRID_SIZE, round(width / GRID_SIZE) * GRID_SIZE - GRID_SIZE)
        position.curY = constrain(position.curY, GRID_SIZE, round(height / GRID_SIZE) * GRID_SIZE - GRID_SIZE)
        
        stroke(position.color1)
        strokeWeight(GRID_SIZE)
        line(position.curX, position.curY, position.prevX, position.prevY)
        
        stroke(position.color2)
        strokeWeight(2)
        line(position.curX, position.curY, position.prevX, position.prevY)
        
        position.prevX = position.curX
        position.prevY = position.curY

class Position:
    def __init__(self, x, y, color1, color2):
        self.curX = x
        self.curY = y
        self.prevX = x
        self.prevY = y
        self.color1 = color1
        self.color2 = color2