Open Modular Lighting

Open Modular Lighting

Floodlights for Fabric on Minecraft 1.20.1 and 1.21.1. Open Modular Lighting is a port of the Forge 1.7.10 mod FloodLights by Keridos. It lights up large areas with invisible light blocks placed along a beam, so you can light a cave, a farm or a base without placing torches everywhere. It has more features than the old mod, such as energy sharing between adjacent lights (all except floodlights) and lightproof glass.

Status: beta. Expect bugs, and back up your worlds.

Features

Lights

Block	What it does	Power
Electric Floodlight	Casts a beam of light in the direction it faces. Three modes: straight (64 blocks), narrow cone (32 blocks) and wide cone (8 blocks).	Energy: 20 E/t straight, 40 E/t in the cone modes
Non-electric Floodlight	Like the electric floodlight, but burns furnace fuel instead. One coal lasts 300 s in straight mode and half as long in the cone modes.	Any furnace fuel (vanilla or modded)
UV Floodlight	Casts a short beam (8 blocks) of dim UV light that hurts living things standing in it, 4 damage per second.	Energy: 80 E/t
Grow Light	Lights the block below it and makes the crop two blocks below grow faster (about one growth step every 20 s). A black-light mode gives the growth without the light.	Energy: 40 E/t
Small / Square Fluorescent Light	Cheap little panels that light up the 5 blocks next to them. The small one can be turned by 90°, and a shapeless recipe converts between the two.	Energy: 2 E/t

All lights turn on with a redstone signal. The signal can be inverted, so that a light is on without redstone and turns off when powered. After a light turns off, it waits 2 seconds before it can turn on again, to prevent flickering.

Using the lights

Action	Effect
Right-click	Opens the GUI: energy and a battery slot, or the fuel slot and remaining burn time
Right-click with a stick or wrench	Cycles the mode (floodlights, grow light) or turns the small fluorescent light
Sneak + right-click with an empty hand	Inverts the redstone signal
Sneak + right-click with a wrench	Picks the light up
Right-click with dye	Tints the light in that colour; wool removes the tint

A light you break keeps its settings (mode, invert, colour, stored energy or burn time) on the item, and the tooltip shows "Configured". The beam follows changes in the world. It stops at solid blocks and shines through glass and plants. When you build into a beam or remove a block from it, the beam adjusts.

Power

• Electric lights use Team Reborn Energy (included in the mod), so cables and generators from Tech Reborn and other Fabric tech mods can power them. Fluorescent and grow lights only accept energy from the back.
• Grow Lights and flourescent lights next to each other share energy
• Batteries in the battery slot charge the light.
• Hoppers and pipes can insert fuel and batteries, but can't take anything out.

Crafting

Smelt Raw Filament (glowstone, redstone, gold) into Glowing Filament. Craft it into an Electric Incandescent Light Bulb, the part needed for every electric light. The non-electric floodlight needs a Non-electric Lantern, made from a Mantle, a Fuel Dissolver and flint and steel. All recipes are shown in the recipe book or in a recipe viewer.

The Lightblock Debug Tool shows the invisible light blocks while you hold it: yellow for normal light, magenta for UV light.

Optional: Jade

With Jade installed, looking at a light shows its mode and whether it is inverted. Jade is not required.

Requirements

• Minecraft 1.20.1 (Java 17) or 1.21.1 (Java 21)
• Fabric Loader and Fabric API