[EXAMPLE] enemy automatic turning at edges

Had this idea at work, just mocked it up and it seems to work so far, I'm using containers for the two pieces and the enemy is just a platform movement and the solid ground is a tilemap:

Sorry, the gif is too wide to display properly: https://s28.postimg.org/vqpowx6ot/stev.gif

and: https://s27.postimg.org/fw3fosfv7/stevex.jpg

Detecting platform edges? Its far more elegant to place an collision object at the ends of a platform. Then you can run checks for multiple enemies using just those 2 objects instead of attaching 2 to each one.

Yeah, but this is quite cool if you don't want to do that for every edge, unless there's a big downside to using this method (other than two detectors per enemy)?

EDIT: I just make a container and they create properly for every instance on an enemy, so you just set your enemy and the game takes care of the rest. I don't understand why this wouldn't be the more elegant approach?