Quake

This repo contains my attempt to modernise the Quake 1 source code.

If it's working (mileage varies) you can play it right now at quake.initialed85.cc; I'm running a few dedicated servers, but you can also run your own to play against others (standard old school Quake listen server style) right from your browser.

Goals

• Aim to keep the experience primarily vanilla with a few tasteful improvements
• Get the code building as a CMake project
• Use SDL2 as the system platform abstraction
• Provide build tooling for macOS, Linux and WASM (sorry about it Windows)
• Fix the NAT-related issues in the original UDP net code
• Implement WebSocket multiplayer for the WASM build (via a proxy / gateway server)

Tasks

• [DONE] Get the code building as a CMake project
  • [DONE] Get a skeleton CMake project working w/ sys_null.c etc
    • [DONE] Fix various variable name clashes etc when throwing everything into a single LibQuakeLib
      • [TODO] Confirm the single-library CMake organization is the right long-term structure
• [DONE] Use SDL2 as the system platform abstraction
  • [DONE] Work out idiomatic way to include SDL2
  • [DONE] Implement video w/ SDL2
  • [DONE] Implement keyboard w/ SDL2
  • [DONE] Implement mouse w/ SDL2
  • [DONE] Scale browser mouse input for display resolution and device pixel ratio
  • [DONE] Implement audio w/ SDL2
• [DONE] Provide build tooling for macOS, Linux and WASM (sorry about it Windows)
  • [DONE] Make Bash scripts for native (macOS / Linux) builds
  • [DONE] Make Bash scripts for WASM builds
    • [DONE] Various fixes to get WASM builds working
  • [DONE] Make Bash scripts for Docker (Linux) builds
• [DONE] Fix various bugs stumbled across
  • [DONE] Fix pointer math segfault loading maps in common.c::COM_FileBase
  • [DONE] Fix pointer math segfault loading maps in pr_exec.c::PR_ExecuteProgram::OP_EQ_S
  • [DONE] Fix null pointer caused (I think) by late init of SDL2 audio under WASM in snd_mix.c::Snd_WriteLinearBlastStereo16
  • [DONE] Fix null pointer to do with server setup in sv_main.c::SV_ModelIndex
  • [DONE] Fix pointer math segfault to do with warping and odd screen sizes caused by r_shared.h::MAXHEIGHT and r_shared.h::MAXWIDTH
  • [DONE] Fix whatever the pointer hell was going on with pr_strings
    • [DONE] Fix it without just spamming ED_NewString everywhere (causing leaks)
  • [DONE] Fix high-resolution software rendering and underwater warp pixelation
  • [DONE] Add optional lower internal render resolution with bilinear upscaling via -internalwidth / -internalheight
  • [DONE] Fix Wayland fullscreen cursor grabbing
  • [DONE] Avoid rebuilding the particle blend table on every screen flash
  • [DONE] Smooth WASM step-entity movement between WebSocket snapshots
• [DONE] Fix the NAT-related issues in the original UDP net code
  • You can control the port your client will use with the -port flag; e.g. if you wanted to run a server and 2 clients all on the same machine:
    • ./Quake -port 26000 +map start
    • ./Quake -port 26001 +connect 127.0.0.1:26000
    • ./Quake -port 26002 +connect 127.0.0.1:26000
• [DONE] Implement WebSocket multiplayer for the WASM build (via a proxy / gateway server)
  • [DONE] Fix browser LAN/server-discovery broadcasts being delivered to only one matching endpoint
  • [DONE] Add regression tests for WebSocket broadcast fan-out
• [DONE] Fix Linux Docker builds and package the runtime SDL2 dependency
• [DONE] Fix server search not finding all virtual-LAN servers across matching ports
• [DONE] Allow a server/browser entrypoint to provision an initial number of FrikBots via the botcount cvar (using the engine's maxclients capacity)
• [TODO] Fix FrikBot occasionally entering a state where it will not attack (possibly related to runaway-loop protection)
• [DONE] Add a safe range check for the custom botcount cvar; excessive bot counts are clamped to available slots
• [DONE] Make maxplayers 32 use the full supported scoreboard range
• [DONE] Keep long scoreboard names from overflowing the legacy text buffer
• [DONE] Fix botcount overriding manual bot impulses and guard botcount reconciliation against full servers
• [DONE] Fix bot slot collision handling, slot-zero handling, and occupancy-mask precedence
• [TODO] Fix crashes when too many players or bots try to connect / the QuakeC VM runs out of room

Usage

There are similar build scripts for 3 different build variants:

Native builds require a system SDL2 development package discoverable by CMake (for example, libsdl2-dev on Debian/Ubuntu or sdl2 on Arch).

• Native
  • Build for whatever your platform is (as long as it's macOS or Linux)
  • Build output is at WinQuake/build-native
• WASM
  • Build for running in a browser
  • Build output is at WinQuake/build-wasm
• Docker
  • Build for Linux, using Docker
  • Build output is at WinQuake/build-docker

NOTE: You'll need to place your demo / purchased Quake resources at WinQuake/id1 to be able to run Quake.

Native

# build once
./build-native.sh
# build any time code changes
./watch-build-native.sh
# run in a 1280x800 window
./run-native.sh

WASM

# build once
./build-wasm.sh
# build any time code changes
./watch-build-wasm.sh
# run at http://localhost:80 (play using a browser)
./run-wasm.sh

Browser mouse input is automatically adjusted using the current display resolution, device pixel ratio, and effective Quake render resolution.

Docker

# build once
./build-docker.sh
# build any time code changes
./watch-build-docker.sh
# run a dedicated Linux server in a Docker container
./run-docker.sh

Original documentation

See original README and original LICENCE

Dev scratch notes

# for deploying Docker-built Linux Quake server to Kubernetes
ARCH=amd64 ./build-docker.sh && PUSH=1 ./package-docker.sh
# for deploying the WASM Quake server and its browser gateway to Kubernetes
ARCH=amd64 ./build-wasm.sh && ARCH=amd64 PUSH=1 ./package-wasm.sh