physics: fix and refactor unsticking #13

	name: CI

	on:
	# Run on pushes to tags, the "master" branch, and PR's
	push:
	branches:
	- master
	pull_request:

	jobs:
	build:

	runs-on: ubuntu-latest
	container:
	image: debian:latest
	steps:
	# Must install git before checking out the repo otherwise github doesn't fetch the .git directory.
	- name: Install dependencies
	run: \|
	apt update
	apt install --yes build-essential git libjpeg-dev libsdl2-dev libcurl4-openssl-dev libpng-dev libfreetype-dev libvorbis-dev

	- name: Fetch repository
	uses: actions/checkout@v4.1.1
	with:
	# make `git describe` show the correct commit hash
	fetch-depth: '0'

	- name: Compile DP
	run: \|
	# prevent git complaining about dubious ownership of the repo
	chown -R root:root .
	# fail if `git describe` doesn't work (required for the buildstring)
	git describe --always
	# fail if there's any warnings
	export CC="cc -Werror"
	make sdl-release

	- name: Upload Linux artifacts
	uses: actions/upload-artifact@v4
	with:
	name: Linux
	path: \|
	darkplaces-sdl

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