Struct CaveChunkGenerator 

pub struct CaveChunkGenerator<G> { /* private fields */ }

Wrap a Generator (typically roxlap_cavegen::BlueCaveGenerator or roxlap_cavegen::MagCaveGenerator) as a ChunkGenerator. Each (chx, chy) gets a chunk-derived seed; chz != 0 is implicit air.

The inner generator is consumed at construction; the wrapper owns it for the lifetime of the adapter. Generators are expected to be cheap to clone (the cavegen presets are unit structs, so this is free).

Implementations

impl<G> CaveChunkGenerator<G>

pub fn new(inner: G, base_params: CaveParams) -> Self

New adapter wrapping inner with base_params as the template for per-chunk parameter derivation.

The base_params.seed is XOR’d with the chunk index via FNV-1a to produce the per-chunk seed; other fields (seed_count, air_ratio, anisotropy, etc.) are passed through unchanged.

Trait Implementations

impl<G> ChunkGenerator for CaveChunkGenerator<G>

where G: Generator<Params = CaveParams> + Debug + Send + Sync + 'static,

fn generate(&self, chunk_idx: IVec3) -> Vxl

Produce the chunk at chunk_idx. Implementations should not allocate or touch any state outside their own configuration — running this from a background thread must be safe.

fn should_generate(&self, _chunk_idx: IVec3) -> bool

Per-chunk filter consulted by crate::Scene::pump_streaming (+ the synchronous crate::Grid::ensure_chunk_generated helper) before dispatching generate. Returning false skips the chunk entirely — it never enters the grid’s chunk map and origin_chunk_z (etc.) reflect only the indices the generator actually materialises.

impl<G> Debug for CaveChunkGenerator<G>

where G: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.