Light Up (Fabric server-side)

Light Up places light sources automatically around players to brighten caves or surfaces, with per-tick pacing and undo support.

Features

• Server-side only (no client mod required)
• Command-driven lighting with range, min light, skylight toggle, and type (surface/cave/all)
• Per-player undo of the last lighting task
• Action-bar style progress (toggle/format configurable)
• JSON configuration with live reload
• Multi-version builds (1.19.x → 1.21.x)

Commands

• /lightup reload – reloads config/light-up.json
• /lightup cancel – cancels your active lighting task
• /lightup undo – undoes your last lighting task
• /lightup <block> <min_light_level 0–15> <range> <include_skylight true|false> <lightup_type surface|cave|all> – starts a new lighting task
• Alias: /lu

Configuration (JSON)

A JSON file is created on first run:

/config/light-up.json

Version support

• 1.19.x, 1.20.x, 1.21.x

Acknowledgements

Inspired by the Spigot/PaperMC plugin LightUp by @LOOHP. See LOOHP/LightUp on GitHub.