SIDESTICK = False

def setup() :
    global is_taken
    size(512, 512)
    background(0)
    is_taken = [[False] * height for _ in range(width)]
    is_taken[width/2][height/2] = True


def draw() :
    x = floor(random(width))
    y = floor(random(height))
    if is_taken[x][y]:
        return
    while True:
        xp = x + floor(random(-1, 2))
        yp = y + floor(random(-1, 2))
        is_contained = 0 <= xp < width and 0 <= yp < height
        if is_contained and not is_taken[xp][yp]:
            x = xp
            y = yp
            continue
        else:
            if SIDESTICK or (is_contained and is_taken[xp][yp]):
                is_taken[x][y] = True
                set(x, y, color(255))
            break

    if frameCount > width * height:
        noLoop()