ikbLib

The library adds three density functions of the noise type, built on a basic Voronoi noise function. It outputs the distance to the center of the current cell, the value of the cell, and the velocity of the neighboring cell. The basic function requires a scale parameter, while the others are optional and fall back to defaults when omitted. Voronoi diagrams of this kind are also called cellular noise, after their resemblance to a microscopic view of plant and animal cells.

Two technical functions are paired with the basic one. ikblibrary:cached voronoi and ikblibrary:pull cached voronoi produce the same outputs with optimized sampling of several values at a single point. Mod developers who write their own density functions can implement the SeededDensityFunction interface that ikbLib introduces, which hands them the world seed. Implementation details are described on the wiki and in the GitHub repository.

The library includes a simple data-driven system for fluids: when two fluids meet, the denser one flows under the lighter one. Stackable and molten tag groups let fluids be grouped for this behavior, and each fluid must be defined through NeoForge's fluid API to take full effect. The mod runs on client and server, and is open source under the MIT License, with its only file build for 1.21.1.