Module noise 

Noise generation utilities for world generation. Noise generation utilities matching vanilla Minecraft’s noise system.

This module provides the noise generation primitives used for world generation:

• ImprovedNoise - Base Perlin noise implementation
• PerlinNoise - Octave-based Perlin noise
• NormalNoise - Double Perlin noise (used for biome climate parameters)
• SimplexNoise - Simplex noise (used for End island generation)

Modules

aquifer 🔒

Noise-based aquifer system for underground fluid placement.

beardifier 🔒

Beardifier: terrain density modification around structure pieces.

blended_noise 🔒

Float-based blended terrain noise from vanilla 26.3.

corner_column_store 🔒

share boundary corner columns with neighboring chunks

end_islands 🔒

End islands terrain generation algorithm.

improved_noise 🔒

Improved Perlin noise implementation matching vanilla Minecraft’s ImprovedNoise.java

noise_chunk 🔒

NoiseChunk: cell-based terrain density evaluation with trilinear interpolation.

normal_noise 🔒

ore_veinifier 🔒

Ore vein generation during terrain fill.

perlin_noise 🔒

Octave-based Perlin noise implementation matching vanilla Minecraft’s PerlinNoise.java

perlin_simplex_noise 🔒

Multi-octave simplex noise matching vanilla’s PerlinSimplexNoise.

preliminary_surface_store 🔒

share preliminary surface levels across chunks

simplex_noise 🔒

Simplex noise implementation matching vanilla Minecraft’s SimplexNoise.java.

Structs

Aquifer

Noise-based aquifer for a single chunk.

Beardifier

Computes terrain density contributions from nearby structure pieces and junctions.

BlendedNoise

Runtime counterpart of vanilla’s 26.3 BlendedNoise sampler.

CornerColumnStore

Generator-wide store of boundary corner columns, keyed by cell column.

EndIslands

End islands density function.

ImprovedNoise

Improved Perlin noise generator.

LazyAquifer

Deferred Aquifer. Used by create_structures so chunks where no structure queries the aquifer skip its (expensive) max_preliminary_surface_level scan.

NoiseChunk

Stores density values at cell corners for a single chunk and provides trilinear interpolation between corners for block-level resolution.

NormalNoise

Vanilla’s 26.3 normal-noise sampler.

OreVeinifier

Ore vein generator. Holds cached block state IDs and the positional random splitter used for per-block randomness.

PerlinNoise

Octave-based Perlin noise generator.

PerlinSimplexNoise

Multi-octave simplex noise generator.

PreliminarySurfaceStore

shared surface levels, one atomic word per entry reads see a complete entry or miss; collisions just mean recomputing

SimplexNoise

Simplex noise generator matching vanilla’s SimplexNoise.java.

Enums

AquiferResult

Result of the aquifer substance check.

Functions

preliminary_surface_level

Evaluate preliminary surface level at quart-quantized coordinates.