hudfx_lnx/README.md
2026-06-14 14:09:05 +03:00

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HudFX LNX

A transparent, always-on-top screen overlay for HudFX alerts on Linux. Displays your HudFX browser overlay URL on a chosen monitor without interfering with other windows or inputs. Optionally launches automatically with OBS.

Requirements

Python 3 and the following packages:

sudo apt install python3-pyqt5 python3-pyqt5.qtwebengine

Setup

1. Configure the overlay

Run the tray app:

python3 ~/.apps/HudFX_LNX/hudfx.py

A tray icon will appear. Right-click → Settings and enter:

  • Your HudFX overlay URL
  • Which monitor to display on (picked from a list of detected screens)

Settings are saved to ~/.config/hudfx-lnx/config.json.

2. Using the overlay

The overlay starts automatically when the tray app launches. Right-click the tray icon to:

  • Stop overlay / Start overlay — toggle it on or off
  • Settings — change URL or monitor
  • Quit — close everything

3. Auto-start with OBS (optional)

To have the overlay launch and close automatically with OBS:

  1. Open OBS → Tools → Scripts
  2. Click + and select ~/.apps/HudFX_LNX/obs_hudfx.py

The overlay will start when OBS finishes loading and stop when OBS exits. The tray icon still appears so you can toggle it off mid-session if needed.

The OBS script auto-detects whether OBS is installed as a Flatpak or natively and adjusts accordingly — no manual configuration needed.

Logging

When launched via OBS, the overlay logs to:

~/.apps/HudFX_LNX/hudfx.log

OBS script activity (start/stop events, errors) is visible in OBS under Tools → Scripts → Script Log.

To follow the overlay log in real time:

tail -f ~/.apps/HudFX_LNX/hudfx.log

hudfx.log is excluded from version control via .gitignore.

Files

File Purpose
hudfx.py Main tray app — run this directly for standalone use
obs_hudfx.py OBS script — add via OBS Tools → Scripts
overlay.py Standalone overlay (no tray UI, takes URL as argument)

Notes

  • The overlay is click-through — you can interact with everything underneath it normally
  • Audio and video autoplay are enabled — no interaction needed for alerts to play
  • No cookies or data are written to disk (off-the-record browser profile)
  • Tested on Linux Mint 21.3 (Virginia) with OBS 31.1.2 (Flatpak), 3-monitor setup (2560×1440 center + two 1080p)
  • Compatible with both native and Flatpak OBS installations