from cs1lib import *

def polygon(x_list, y_list):
    draw_polygon( zip(x_list, y_list) )

def falling_star():
    i = 0
    while i < len(y):
        y[i] += vy
        i += 1

    set_clear_color(1, 1, 1)
    set_fill_color(1, 1, 0)

    clear()
    polygon(x, y)

x = [161, 119, 100, 81, 39, 70, 63, 100, 137, 130]
y = [86, 80, 43, 80, 86, 116, 158, 138, 158, 116]
vy = 1

start_graphics(star, 400)