Spikes now follow the edge of the platform! Only works in the forward direction at the moment. Reverse direction comes next. Spikes will go through enemies, pickups, and the player (right now killing the player in the process - eventually only damaging the player). Oh, they also go through other spikes.
Reverse direction spikes now work properly!
Cleaned up some leftover test code.
merging spike update with health update (probably messed up the health part)