Requirements

sudo xbps-install -S mesa-devel libfreeglut-devel

Aseprite PPM exporter

# Start from root of the project.
mkdir -p ~/.config/aseprite/scripts
ln -s $PWD/extern/ppm.lua ~/.config/aseprite/scripts/

This script can be keybind in Aseprite.

Trenchbroom integration

# Start from root of the project.
ln -s $PWD/extern/trenchbroom/ ~/.TrenchBroom/games/pathfinder

• Check that path in GameEngineProfiles.cfg points to game executable.
• Open Trenchbroom and go to View>Preferences and check that Game Path points to project root.