Footsteps

I updated the enemy ai with hearing so that they detect the player if he is close enough, unless he is sneaking, and so I thought; Since the enemies are able to hear you, why shouldn't you be able to hear them?

The game is viewed from a top down perspective so I have to use both audio and visual effects to indicate that you are close to an enemy and from which direction the enemy's sounds are coming.
What I decided to do was to add a shoeprint effect whenever an enemy is close enough to be heard but isn't seen.

Peep diz!