text: """
  MIT License
  
  Copyright (c) 2018 Claude SIMON (https://q37.info/s/rmnmqd49)
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
  """
  
  """
  
    This file comes from https://www.pygame.org.
  
    It needs PyGame to be installed, and was modified to be controlled
    by a web interface thanks to the Atlas toolkit (http://atlastk.org).
     
  """
  
  
  import random, math, pygame, os, sys
  from pygame.locals import *
  from threading import Thread
  import threading
  
  os.chdir(os.path.dirname(os.path.realpath(__file__)))
  sys.path.append("../../atlastk")
  
  import atlastk
  
  #constants
  WINSIZE = [640, 480]
  WINCENTER = [320, 240]
  NUMSTARS = 150
  STEP = 20
  
  def init_star():
    "creates new star values"
    dir = random.randrange(100000)
    velmult = random.random()*.6+.4
    vel = [math.sin(dir) * velmult, math.cos(dir) * velmult]
    return vel, WINCENTER[:]
  
  
  def initialize_stars():
    "creates a new starfield"
    stars = []
    for x in range(NUMSTARS):
      star = init_star()
      vel, pos = star
      steps = random.randint(0, WINCENTER[0])
      pos[0] = pos[0] + (vel[0] * steps)
      pos[1] = pos[1] + (vel[1] * steps)
      vel[0] = vel[0] * (steps * .09)
      vel[1] = vel[1] * (steps * .09)
      stars.append(star)
    move_stars(stars)
    return stars
    
  
  def draw_stars(surface, stars, color):
    "used to draw (and clear) the stars"
    for vel, pos in stars:
      pos = (int(pos[0]), int(pos[1]))
      surface.set_at(pos, color)
  
  
  def move_stars(stars):
    "animate the star values"
    for vel, pos in stars:
      pos[0] = pos[0] + vel[0]
      pos[1] = pos[1] + vel[1]
      if not 0 <= pos[0] <= WINSIZE[0] or not 0 <= pos[1] <= WINSIZE[1]:
        vel[:], pos[:] = init_star()
      else:
        vel[0] = vel[0] * 1.05
        vel[1] = vel[1] * 1.05
  
  def acConnect(dom):
    dom.inner("", open("Main.html").read())
  
  pos = WINCENTER
  
  def acCenter(dom):
    global pos;
    pos = [WINSIZE[0]/2, WINSIZE[1]/2]
  
  def acRight(dom):
    global pos;
    pos = [pos[0] + STEP, pos[1]]
  
  def acEnd(dom):
    global pos;
    pos = [WINSIZE[0], pos[1]]
  
  def acDown(dom):
    global pos;
    pos = [pos[0], pos[1] + STEP]
  
  def acBottom(dom):
    global pos;
    pos = [pos[0], WINSIZE[1]]
  
  def acLeft(dom):
    global pos;
    pos = [pos[0] - STEP, pos[1]]
  
  def acBegin(dom):
    global pos;
    pos = [0,pos[1]]
  
  def acUp(dom):
    global pos;
    pos = [pos[0], pos[1] - STEP]
  
  def acTop(dom):
    global pos;
    pos = [pos[0], 0]
  
  def acToggle(dom):
    dom.toggle_class("Simple", "hidden")
    dom.toggle_class("Expert", "hidden")
  
  callbacks = {
    "": acConnect,
    "Center": acCenter,
    "Right": acRight,
    "Down": acDown,
    "Left": acLeft,
    "Up": acUp,
    "End": acEnd,
    "Bottom": acBottom,
    "Begin": acBegin,
    "Top": acTop,
    "Toggle": acToggle,
  }
  
  def atlas():
    atlastk.launch(callbacks, None, open("Head.html").read())
  
  def main():
    global pos;
    thread = threading.Thread(target=atlas)
    thread.daemon = True
    thread.start()
  
    pygame.time.wait(2000);
  
    "This is the starfield code"
    #create our starfield
    random.seed()
    stars = initialize_stars()
    clock = pygame.time.Clock()
    #initialize and prepare screen
    pygame.init()
    screen = pygame.display.set_mode(WINSIZE)
    pygame.display.set_caption('pygame Stars Example')
    white = 255, 240, 200
    black = 20, 20, 40
    screen.fill(black)
  
    #main game loop
    done = 0
    while not done:
      draw_stars(screen, stars, black)
      move_stars(stars)
      draw_stars(screen, stars, white)
      pygame.display.update()
      for e in pygame.event.get():
        if e.type == QUIT or (e.type == KEYUP and e.key == K_ESCAPE):
          done = 1
          break
        elif e.type == MOUSEBUTTONDOWN and e.button == 1:
          pos = list(e.pos)
  
  
      WINCENTER[:] = pos
      clock.tick(50)
  
  main()
  