Files

T

Database is more usable now.
All pages have been updated to use the database, and share an application configuration.
Page Stack has been removed, no more pages hanging around in memory. Replaced with a 'Router' which uses an Enum to determine which page should be displayed, destroys the old page and initializes the new page all in one go. No more push, pop, rollback, etc. No more holding instances of pages.
Logger has been updated with proper timestamps and sorting now works as expected."

2026-03-23 15:02:07 -05:00

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RhemaWave

A Go-based fullscreen SDL2/OpenGL application for Linux kiosk systems. Displays proclamations with audio playback and animated visual patterns.

Development

Development uses Nix for a reproducible build environment.

nix develop                                # enter dev shell
go build -o bin/rhemawave rhemawave.go     # build
./bin/rhemawave                            # run
./dev_scripts/reset.sh                     # reset database (if needed)

Prerequisites

Nix with flakes enabled
A display server (X11/Wayland) and audio device for running the application

Architecture

Page-based UI — SDL2/OpenGL 3.3 fullscreen rendering with a page stack for navigation
Proclamation player — scrolling text display with synchronized audio playback
Startup validation — WiFi, TOS acceptance, email, license key checks
Singleton managers — ShaderManager, FontManager, Logger (initialized once via sync.Once)

Key Directories

bin/                          # build output (gitignored)
share/rhemawave/              # assets (fonts, shaders, proclamations, TOS)
internal/                     # Go source packages
packaging/                    # deployment configs (kiosk, updater, polkit)
dev_scripts/                  # developer utilities

Runtime Data

Stored in ~/.local/share/rhemawave/:

data.db — SQLite database (config, proclamations, logs)
log.txt — application log
license_key — license key file

Development Rules

These rules must be followed during the development of RhemaWave to retain a maintainable application.

The Application package is soley responsible for managing the database handler, and the configuration cache. Internal packages may update the configuration within the database, and then signal the application to refresh the cache via a callback function refreshCache().

Deployment

Deployed to kiosk hardware via NixOS-Anywhere. See packaging/ for kiosk system configs.

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