HI {NAME}
Tells the server the client is connecting and his name.
MV {UP|DOWN|LEFT|RIGHT}
Tells the server in which direction the client is moving.
HELLO {ID} {X} {Y}
Responds to HI by telling the player its Id and position.
NEW {ID} {X} {Y} {NAME}
Server tells other client that a player connected
QUIT {ID}
Player with ID quit
PPOS {ID} {X} {Y}
User {ID} has a new pos
NPC {ID} {X} {Y} {NAME}
Server tells clients there is a npc.
NPOS {ID} {X} {Y}
Server tells clients npc ID has moved