because there was a request in graphic request
download (comes as a test level and its folder)
UPDATE July 30th:
the platform speed was slow so I multiplied it by 1.5.
UPDATE August 1st:
the platform no longer moves while the player is powering down or powering up.
Pretty straightforward: place the platform and the hammer bro. You can also copypaste the setup from the test level so that, in-game, the hammer bro doesn't wander off the center of the platform by a few pixels.