Moved things to Physics.h,  Working on walking

Still doesn't work, because terrain is using the old system of entitiy
model, so it doesn't work with the new ray intersection code. about to try
to fix that.
Basic working level exploration.

Added a PlayerEntity class as the first of the actual direct game element
classes. Code is still sketchy, but you can explore a level you edit in
the editor.
Physics improvements, still sketchy

I added some more featues to the physics, and started to have a look at
how the water would interface with the player. I'm not sure how well that
part of the code is designed, it might pay to have a look at re-doing that
better.
added swimming and player bounce on high falls
Networking still not quite working
adding files
files...
models
player.obj
added level
levels
fixed?
Networking not sending or receiving packets
added network loading screen
fixed networking?
fixed networking?
fixed networking?
fixes
server fixes
merged