Fluid Tick Structure Processor

The mod adds a structure processor named fluid tick. The processor searches a structure for fluid blocks and schedules a fluid tick for each one, so fluids inside generated structures start moving right after generation instead of staying frozen in place. Once a fluid block is scheduled, the ordinary fluid update logic takes over and the result follows normal fluid behavior, which can change how the structure plays out. The processor is applied to a structure through a datapack, so a structure placed in the world can use it without any code.

Players join without it, since only the server has to run the mod. It targets 1.20.1, 1.21 and 1.21.1, with the latest file 0.1.0 for 1.21.1 published on 2025-10-21. The project is open source under the Apache License 2.0 and has public links to its source code and issue tracker. Required dependencies are Fabric Language Kotlin on Fabric and Kotlin for Forge on Forge and NeoForge.

Because the processor is data driven, it can sit alongside other structure and fluid mods that also use datapack processors. An example usage is included with the project to show how a structure is set up to use the processor.