libq2

A Go module (github.com/packetflinger/libq2) implementing the Quake II network protocol, on-disk file formats, and related utilities — a toolkit for building bots, demo tools, master servers, and server-query utilities for id Software's Quake II.

Packages

Package	Purpose
message	Core of the library — encodes/decodes Q2 network packets (SVC_/CLC_ messages, entity/player-state deltas, connectionless packets)
bot	Full UDP client/netchan implementation to connect a bot to a Q2 server (challenge/connect handshake, reliable ack, callbacks per message type)
client	Client-side math: view angles, movement, velocity
player	Userinfo string marshaling, death/obituary parsing
demo	Reads/writes .dm2 demos and MVD (multi-view/GTV) demos
bsp	Parses .bsp map files (entities, planes, textures, vertices, PVS/visibility)
pak	Reads/writes .pak and .pkz (zip) asset archives
master	A Quake II master server (heartbeat protocol) + JSON HTTP API (/GetServers, /HealthCheck, /ServerInfo)
state	Server/client state, e.g. Server.FetchInfo() to query a live server, UserCmd
flags	Deathmatch flags bitfield parsing
proto	Protobuf schemas/generated code (challenge, packet, pak, server messages, etc.) used internally for structured data
types, util	Shared helpers (vectors, misc utilities)
testdata	Sample .bsp/.pak/.dm2/.mvd2 fixtures for tests

Examples

The examples/ directory contains runnable programs showing usage:

• bots/simplebot.go — connects a bot to a server
• demos/decode, demos/mvd, demos/parsedemo — demo file tools
• master/master.go — run a master server
• pak/listpakfiles.go — list PAK archive contents
• serverinfo/info.go — query a server's info string

Usage

go get github.com/packetflinger/libq2

Then import the package(s) you need (e.g. pak, state, bot) in your Go code — the examples/ directory doubles as usage documentation, e.g.:

srv := state.Server{Address: "host", Port: 27910}
info, _ := srv.FetchInfo()

Run tests with:

go test ./...