Let's start adding the code to create the blocks.

  • Go to and drag out Rectangle. Drop it on the line right after the random number.
  • Make sure that there is a green block ···· to the left of your rectangle code.

This is how the program knows which lines of code are inside the interval event.

stage.set_background("city") sprite = codesters.Sprite("bike") sprite.set_size(0.5) sprite.go_to(-200, 0) stage.set_gravity(10) stage.disable_all_walls() def space_bar(): sprite.jump(5) # add other actions... stage.event_key("space", space_bar) def interval(): # add any other actions... top_height = random.randint(1,10) stage.event_interval(interval, 2)