In netplay/:
crc.{c,h}             Generic CRC routines.
checkbuf.{c,h}        Buffer of checksums.
checksum.{c,h}        Routines for checksumming the game state.
netconnection.{c,h}   Definition of NetConnection, being the state of a
                      network connection, and operations on it.
nc_connect.ci         Part of netconnection.c that handles establishing
                      connections.
netinput.{c,h}        Definitions and operations for melee input commands
                      over a network connection.
netmelee.{c,h}        Keeps track of network connections used in the game,
                      with methods to control them all at once.
                      Functions that directly access the game data are kept
                      in the relevant files (melee.c, pickmele.c, battle.c).
netmisc.{c,h}         Miscelaneous functions that didn't fit in elsewhere.
netoptions.{c,h}      Description of a network connection to be established.
netplay.h             Some global netplay definitions.
netrcv.{c,h}          Processes incoming packets. Does know about the protocol
                      and will do consistency checking.
                      Does not directly manipulate the game state.
netsend.{c,h}         Enqueues all sorts of packets for sending.
                      Does not know about the protocol and hence will do
                      no checks for protocol sanity.
netstate.{c,h}        Definitions of the states of a network connection.
notify.{c,h}          Routines for notifying a remote side of local changes.
                      Knows about the protocal and has assert()s to
                      check for local consistency.
packet.{c,h}          Definition and creation of packets. Create functions
                      should only be called from netsend.c.
packethandlers.{c,h}  Routines for processing each type of incoming packet.
packetq.{c,h}         Manages the packet queue.
packetsenders.{c,h}   Creates and sends/queues packets.

In netplay/proto/:
npconfirm.{c,h}       Functions for handing the 'confirmation' protocol.
ready.{c,h}           Functions for handling the 'ready' protocol.
reset.{c,h}           Functions for handling the 'reset' protocol.





TODO:
Division:
- files that interface with sockets and knows nothing of the game
  (these are in libs/network)
- files that know of sockets and the game but don't directly interface
  with either
- files that interface with the game and know nothing of sockets