This is used to determine the bounding box for interaction in the client
(the ray that's cast from your camera interacts with it to determine the
highlighted block).
TODO: Make it work better with metadata.
This commit also fixes one of the issues with snow: ref #194
I'm splitting up core pieces of functionality into several smaller
modules. TrueCraftGame will be made smaller and smaller until it's just
a small wrapper around the modules doing all of the work. This should
allow for modders to easily add new modules or replace builtin modules,
and will make the codebase more maintainable in general.
