Point cloud memory
Up to 200 000 points are kept in flat primitive arrays with a ring cursor, so a scanned room stays readable as a temporary map for about five minutes before fading out.
Fabric mod · Minecraft 26.2
The world goes black. The only thing left is what you scan: hold right mouse button and the scanner sprays raycasts into the dark, painting every surface it touches as a temporary point cloud that fades on its own.
Move your cursor inside to scan
A single item — lidar:lidar_scanner — added to the vanilla
Tools & Utilities creative tab. Equipping it is what plunges the world into darkness.
Up to 200 000 points are kept in flat primitive arrays with a ring cursor, so a scanned room stays readable as a temporary map for about five minutes before fading out.
110 raycasts a tick ride an expanding ring that restarts every 8 ticks — the red pulse you see and the rays that generate points share one clock, so they never drift apart.
Living entities are sampled from their own render model, part tree and pose included. A spider keeps its legs, a creeper its four feet — no texture is ever reproduced.
Distance drives hue across a 32-block gradient, red through violet, from a pre-built colour table. Close geometry reads warm, far geometry reads cold.
A compact top-left readout while the scanner is held: status, range, live point count and a memory bar showing how full the cloud is.
Everything is drawn on the client and nothing is persisted. The mod reads the world and writes points — it never modifies, moves or interacts with an entity.
mods/.lidar-scanner-1.0.0.jar in next to it.Running an older Minecraft? Check the version archive for a matching build.
lidar