Player can now "phase" by pressing shift. This is a test of the strategy
system- phasing makes the player move slower, but they can freely move
through walls. This will be phased out (HA!) and expanded to make sure
the strategies can affect the player's vital stats, to allow for burning
or supercharged states. I may have to put together the player as a
multistate machine or something similar- weapons are gonna be generated
as strategies, anyway.