Cannon Fire

Test out your aim by trying to shoot the floating balls right out of the air. Go ahead and fire the cannon.
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  # This game is from the official documentation of freegames
  # https://pypi.org/project/freegames/

  # pip install freegames

  # Tap on Screen to Fire

  # import modules  
  from random import randrange
  import turtle as t
  from freegames import vector

  # Set window title, color and icon
  t.title("Canon Fire")
  root = t.Screen()._root
  root.iconbitmap("logo-ico.ico")
  t.bgcolor('#99ffbb')

  ball = vector(-200, -200)
  speed = vector(0, 0)
  targets = []

      
      # Functions
      # Respond to screen tap
      
  def tap(x, y):
      if not inside(ball):
          ball.x = -199
          ball.y = -199
          speed.x = (x + 200) / 25
          speed.y = (y + 200) / 25

  # Return True if xy within screen
  def inside(xy):
      return -200 < xy.x < 200 and -200 < xy.y < 200

  # Draw ball and targets
  def draw():
      t.clear()

      for target in targets:
          t.goto(target.x, target.y)
          t.dot(20, '#8000ff')

      if inside(ball):
          t.goto(ball.x, ball.y)
          t.dot(6, '#cc0000')

      t.update()

  #  Move ball and targets
  def Screen():
      if randrange(40) == 0:
          y = randrange(-150, 150)
          target = vector(200, y)
          targets.append(target)

      for target in targets:
          target.x -= 0.5

      if inside(ball):
          speed.y -= 0.35
          ball.Screen(speed)

      dupe = targets.copy()
      targets.clear()

      for target in dupe:
          if abs(target - ball) > 13:
              targets.append(target)

      draw()

      for target in targets:
          if not inside(target):
              return

      t.ontimer(Screen, 50)

  t.setup(420, 420, 370, 0)
  t.hideturtle()
  t.up()
  t.tracer(False)
  t.onscreenclick(tap)
  Screen()
  t.done()
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