LeafRTP | Random Teleport

The rtp command moves a player to a random location that passes a safety check. The mod is built to find that spot in the lowest-cost way it can, selecting chunks instead of single blocks so that the checks do not scan adjacent blocks one by one, and the chosen spot stays clear of chunk boundaries. Server owners can configure the behavior, and the mod can be extended with swappable suppliers and consumers, so safety checks, biome checks and selection shapes can be replaced in code.

The author rewrote the mod in a later version after earlier random teleport plugins were blamed for lag on servers. Profiling was used to find the cost, and the author describes the work as cleaning up code structure and cache and data access patterns. A test bench plugin measured throughput at one random teleport call per game tick, 20 per second, and a pure reroll model was tested against the selection approach.

LeafRTP runs on Fabric and NeoForge, and is also available for the server platforms Paper, Spigot, Bukkit, Purpur, Folia and Velocity. Only the server needs it, so players join without installing anything. It supports game versions 1.20.1 – 26.2 across 22 release versions, and the mod is open source under the MIT License.