Struct WorldgenRandom 

pub(in worldgen::feature) struct WorldgenRandom {
    source: Xoroshiro,
    next_gaussian: Option<f64>,
}

Vanilla’s WorldgenRandom when constructed for biome decoration.

Feature decoration always constructs WorldgenRandom(new XoroshiroRandomSource(...)). Sampling then goes through BitRandomSource.next*, so it does not match raw XoroshiroRandomSource for nextInt, bounded ints, doubles, longs, or gaussians.

Fields

source: Xoroshiro

next_gaussian: Option<f64>

Implementations

impl WorldgenRandom

pub const fn from_seed(seed: u64) -> WorldgenRandom

Creates a new WorldgenRandom backed by vanilla’s XoroshiroRandomSource.

pub const fn set_seed(&mut self, seed: i64)

Re-seeds the backing XoroshiroRandomSource.

Vanilla WorldgenRandom inherits its gaussian cache from LegacyRandomSource, but overrides setSeed to only reseed the wrapped source. That means setDecorationSeed / setFeatureSeed intentionally preserve a pending gaussian value.

pub fn set_decoration_seed( &mut self, seed: i64, block_x: i32, block_z: i32, ) -> i64

Vanilla’s WorldgenRandom.setDecorationSeed.

pub const fn set_feature_seed( &mut self, decoration_seed: i64, feature_index: i32, step: i32, )

Vanilla’s WorldgenRandom.setFeatureSeed.

Trait Implementations

impl MarsagliaPolarGaussian for WorldgenRandom

fn stored_next_gaussian(&self) -> Option<f64>

Gets the stored next gaussian.

fn set_stored_next_gaussian(&mut self, value: Option<f64>)

Sets the stored next gaussian.

fn calculate_gaussian(&mut self) -> f64

Calculates the next gaussian.

impl Random for WorldgenRandom

fn fork(&mut self) -> WorldgenRandom

fn next_i32(&mut self) -> i32

fn next_i32_bounded(&mut self, bound: i32) -> i32

fn next_i64(&mut self) -> i64

fn next_f32(&mut self) -> f32

fn next_f64(&mut self) -> f64

fn next_bool(&mut self) -> bool

fn next_gaussian(&mut self) -> f64

fn next_positional(&mut self) -> RandomSplitter

fn next_i32_between(&mut self, min: i32, max: i32) -> i32

fn next_i32_between_exclusive(&mut self, min: i32, max: i32) -> i32

fn triangle(&mut self, min: f64, max: f64) -> f64

fn triangle_f32(&mut self, min: f32, max: f32) -> f32

fn consume_count(&mut self, count: i32)