Damage

Currently, damage and check are found in the hound's code. Needs to be
reconfigured for the hero's object, such that it can obtain the ID of
the enemy it collided with, and take damage based on it's touch damage
values.

Health appears to be working correctly, as does the life counter.

Also, hound now changes sprite image based on whether he's jumping or
not, just swap these placeholder image swaps out for whatever sprites
are being used in final version