T-988 — BuildingExteriorTag {wall_material, roof_form, facade_rhythm,
setback_tier, color:HsvColor, street_surface}. New trait_exterior.rs:
3-step era-free derivation (visual_bundle filter -> zone-bias weighted
pick -> density->setback), color seed-sampled within the register band.
Resolved at GenerateSkeleton plan time (T-994 precedent), frozen on
BuildingPropertyTag; FillChunk only reads it. Four append-only
integer-discriminant enums (WallMaterial/RoofForm/FacadeRhythm/
StreetSurface), unknown token -> axis Generic + warn. trait_catalog_reader
now parses visual_bundle + the two new tables (OnceLock-cached).
New SeedDomain::TraitExterior (per-axis sub-chains — no cross-field
correlation).
T-959 — FillChunk reads the frozen exterior tag: wall_material/roof_form
onto Wall/Roof shell voxels (FilledChunk.surface_material). Additive,
ShellVoxel untouched, all shell tests pass. (Interstitial-fill-from-setback
split to T-1098 — needs a FillChunk block-metadata + geometry design pass;
nothing consumes FillChunk until Phase 5.)
T-1097 — BlockSkeleton.interstitial_character (OpenSpace|OperationsSurface),
D-233 bulk-driven: bulk-industry blocks' non-roofed remainder tags as built
economic infrastructure, not generic open space.
cargo check --all-targets clean; 1666 lib tests pass; no golden impact
(harnesses top out at CascadeLayer::RoadGraph, unreachable by Layer 4/5).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
T1: heritage corridor_pool excluded from the ordinary phase-1 lottery and
coverage repair (D-232 reserves the heritage sub-pool for the remoteness
dial); reachable via hero pin, necessity swerve, and the T-1003 heritage
pool only. 3 new tests.
T2+H4: coverage repair no longer grows trait_selection past K when all
slots are pinned (phase-2 necessity swerve serves the type instead);
runtime warn when authored pins exceed K; V-TT-05 importer guardrail
bounds pins per body at 5 (max ComplexityTier K). 2 new tests + 2 python
tests.
H1: body-level dispatch aggregation extracted to pure
aggregate_body_dispatch_inputs + tested directly (union mix, MAX
prosperity/K); threading test asserts identical vocabulary/pools across
co-body settlements with per-settlement swerve rates. 2 new tests.
H2: tooling/economy-db/test_traits.py — 14 stdlib unittest cases over
V-TT-03/04/05 failure branches, wired into make test-tooling.
H3: hard-gate JSON parsers now tracing::warn on malformed blobs (silent
gate-widening) matching the sibling map parsers.
H5: catalog read memoized (OnceLock) — SQL+parse once per server run,
bias stays per-body. 1 new test.
T3: TraitDistrict seed-domain doc aligned with the two-level derive chain.
T4: D-225 misattribution dropped from the reader module doc.
systems.db regenerated + stamped (traits.py is a stamped source).
Gates: full cargo test 1638 green (goldens intact), clippy -D warnings,
ruff, make test-tooling (now incl. the traits units).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
T-994 — three-phase draw replacing the flat splitmix64 flavor pick:
- Phase 1 body K-draw (trait_draw.rs): hard gates -> soft weights (two-part
geographic_sector join, PR #148) -> SeedChain::for_body-seeded weighted
draw of K (5/3/1/0 by ComplexityTier), pins count toward K, coverage-aware
over a new body-level district-type-mix aggregate threaded into
CityGenerationContext at L3->L4 dispatch.
- Phase 2 district-dominant pick keyed by the D-243 2048m District cell —
settlements sharing a cell independently derive the identical template.
Resolved at dispatch, never in FillChunk (T-987 stays pure).
- trait_catalog_reader.rs: systems.db reader for trait_templates +
atlas_body_trait_bias (D-225 resource pattern), registered in main.rs
with graceful degradation.
- BlockSkeleton carries district_type; assign_block_tags is a pure lookup.
T-1003 — deviation/swerve system (trait_swerve.rs):
- ArchitectureFlavorRef is now InVocabulary(u8) | Swerve(tag).
- Rare per-building wildcard: foreign-import pool (other corridors +
cross_corridor) driven by Epicenter/Passage tier, mixed faction,
road-graph degree; heritage-callback pool (own-corridor heritage) driven
by isolation, remote tier, founding_age_years. Integer bps, base 100,
cap 300 per driver — placeholder constants pending calibration.
- Sparsity escape hatch = same mechanism, necessity-triggered at the
phase-2 pick (deterministic max-weight over the hard-gate-eligible pool).
- New SeedDomains: TraitVocabulary(13) / TraitDistrict(14) / TraitSwerve(15).
Governance: D-232 amended (district pinned to the D-243 2048m tier — the
D-222/D-243 redefinition was never captured; swerve driver mappings +
placeholder rates recorded), D-229 flavor_ref field updated to the enum
shape, D-235 amended (T-995 vocabulary ratification note; rides here due
to single-file entanglement).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Sub-chunk mosaic that modulates the D-228 axes into a spatially-coherent,
relief/moisture-conditioned mosaic of micro-habitats within a terrain class —
the fix for the aliveness probe's uniform "Wetland 100%".
- seed.rs: SeedDomain::VoxelMosaic = 12 (append-only; pinned-discriminant guard)
- voxel.rs: five new D-228 axis values (Vegetation::{Meadow,Deadfall,Lichen},
TerrainMaterial::{Hardpan,Scree}); the per-family-gated mosaic pass
- detail_scatter.rs: voxel_mosaic() selection field (~8-64 m band)
- atlas/mosaic.rs: surface-class palette + integer-basis-point weighted selection
with moisture-affinity conditioning; temperate/native baseline palettes
- data/mosaic_constants.toml: source-canonical palette mirror
- believability.rs: micro_habitat_distinct metric + D-245 intra-class criterion
v1 scope (D-246-faithful): modulates vegetation + water only, in the vegetated
classes (Wetland/Forest/Grassland), so the D-239 §8 lithology law is untouched;
water is gated on the T-1040 has_active_channel hydrology rule. Material variants
(hardpan/scree) and the extreme classes are a §8-aware follow-up; the biome-aware
palette variants (T-1085 vocab) extend the baseline before generation.
Goldens regenerated (believability + derivation). Full server suite green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
T-1081 review (Hoshe + Tyre): the seed_domain_discriminants_are_pinned test (the
D-224 guard that fails CI if a variant is renumbered — which would silently re-roll
every world's relief field) did not pin the new VoxelRelief = 11. Add the assertion.
Also fold Tyre's two Q-123 calibration notes into item 4: (i) sanity-check the
slope_q*3 + elev_q envelope on a synthetic high-slope body (both terms cap at 100);
(ii) the relief transect is a single diagonal slice (fine for isotropic fBm, revisit
if an anisotropic ridge field is added).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The voxel tier read flat (the D-245 "0–3 m, no hills to navigate by" bug):
family generators set elevation from elev_q at a compressed scale plus only ±4 m
micro-scatter, and detail-scatter's mid-scale relief (D-243 §2) only ever reached
the district tier (elev_q), never per-voxel elevation_m.
- detail_scatter.rs: extract the enveloped-fBm core; add `voxel_relief` at the
0.25–2 km octave band (vs the district 4–40 km band).
- voxel.rs: add the mid-scale relief post-dispatch in derive_voxel_column, body-global
SeedDomain::VoxelRelief seed (position-keyed), f64 truncated to integer metres (D-010).
Envelope = slope_q*3 + elev_q — the coarse heightmap gives slope_q ≈ 0 even on high
ground (Arbour max 13), so elevation must drive ruggedness. Flat families only
(Alluvial/Lava/BraidedDelta/Dune/Meander); the dramatic families already carry strong
internal relief and WaterBody stays at sea level.
- seed.rs: SeedDomain::VoxelRelief (D-224 domain separation).
- believability.rs: new `contrast.voxel_relief_m` metric — mean within-district elevation
range over a 2 km transect (a single 64 m sample chunk is narrower than the relief
band) + a "voxel relief" criterion.
Arbour @ yolo: voxel relief 5 m → 59 m, 6/8 → 7/8 criteria (remaining fail = the
Q-123 vegetation-denominator item). Edict 59 m. Golden regenerated; 1586 lib tests +
believability harness (determinism) pass; clippy -D warnings clean.
D-239 amended (T-1081); Q-123 item 4 updated. Deferred to Q-123/follow-up: the
provisional span + threshold, and a per-body hypsometric absolute-elevation model.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Hoshe found a CRITICAL coherence defect (Tyre APPROVE):
- CRITICAL: cluster_scatter received the per-voxel sub_chunk_seed as its cluster
seed, so voxels in the same 6m cell got different scatter -> salt-and-pepper,
not the §3-mandated clustered patches. Re-key on (world, body, cluster-cell):
add SeedDomain::Cover=10 (pinned); cluster_scatter(world_seed, body_id, x, y)
derives for_body(world_seed,body_id).derive(Cover, cluster_pair_id). derive_cover
now takes (world_seed, body_id, ...). (Hoshe #1)
- The coherence test was tautological (constant seed bypassed the broken path).
Rewritten to the production derive_cover signature in a cold-lake scatter band;
it FAILED at 20% on the old code, passes 100% now. (Hoshe #2)
- Zigzag-encode cluster (cx,cy) before Cantor pairing (negatives were cast as u64
directly); fix the misleading 'no collision' comment. (Hoshe #3, Tyre)
- Sea-ice band was inverted (~85% ice at the -2 onset). Now monotonic: ice grows
~8% (onset) -> ~92% (cold edge); leads (open gaps) layered only in the cold half
via a 3x super-cell, passing the super-cell index directly. Dead depth==0 guard
removed. (Hoshe #4, Tyre #1/#3)
cargo test passes, clippy -D warnings clean, fmt clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Hoshe REQUEST_CHANGES + Tyre APPROVE:
- Cache key omitted world_seed → a cache reused across worlds could return
another seed's column. CacheKey is now (world_seed, body_id_hash, voxel_pos).
(Hoshe #1)
- Sub-chunk voxel seed reused SeedDomain::ChunkContext (tier-collision risk vs
the region meander seed). Add SeedDomain::Voxel = 9 (append-only, pin test
updated) and use it. (Hoshe #2, Tyre #1)
- get_or_derive forced callers to pre-compute body_id_hash while fnv1a_64 is
pub(crate). Drop the param; compute the hash internally. (Tyre #2)
- Fix two inaccurate comments (micro-relief range [-4,+3] not ±2; scatter mask
is 4-bit [0,15] not bits [4:6]). (Hoshe #3/#4)
- Strengthen the LRU eviction test: add a test-only contains_voxel() helper and
assert WHICH entry was evicted (refreshed pos survives, LRU pos evicted). (Hoshe #5)
- LRU O(capacity)-scan perf flagged on T-1031 (Tyre #3, deferred to the budget harness).
cargo test passes, clippy -D warnings clean, fmt clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
D-239 §1/§7/§10 — the lower derivation chain end-to-end with the AlluvialPlain
fallback only (specialized families are T-1029).
- chunk_context.rs: ChunkContext (64m) — basin_direction + meander phase/wavelength
+ active-channel params. NO per-tile flow_direction[64x64] (D8 ~152m coarser than
a chunk, D-239 §10); features >64m seed from Region-or-higher. SeedDomain::ChunkContext=8.
- voxel.rs: VoxelColumn (1m) composing the D-228 tile axes (TerrainMaterial /
FloorMaterial=None / Vegetation / Water / elevation_m). Derive-on-demand + VoxelCache
(LRU BTreeMap, never persisted per D-227). Domain warp (T-1026) wired through:
f64 warp -> as-i32 truncation to the voxel address; all material/morphology gates
integer (D-010 — the meander wavelength f64 is truncated before the Water decision).
- AlluvialPlain generator: Soil/Wetland terrain, climate vegetation, integer-meander
channel (Shallow/Deep) from ChunkContext. The other 7 families are dispatch stubs
(canonical terrain material, fall back to AlluvialPlain geometry) — no panic.
29 new tests incl end-to-end determinism (same seed/pos -> identical column),
cache hit/miss/eviction/re-derivation, warp-applied. cargo test 1563 pass,
clippy -D warnings clean, fmt clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
First foundation slice of the Atlas-to-tile derivation model (epic T-974),
building the carrier layer ahead of its T-1027+ consumers.
T-1026 — Anti-squaring domain warp (D-239 §4): stateless pure
fn(seed,body_id,pos)->(f64,f64), ±8m, f64 to the final voxel then as-i32
truncation for IEEE-754 cross-target determinism. New domain_warp.rs,
SeedDomain::DomainWarp; golden-vector + cross-thread tests. Position math
only — D-010 integer discipline preserved downstream. Marked dead_code
until the T-1028 VoxelColumn pipeline consumes it.
T-1023 — RegionProfile carrier (D-239 §1,§10): new RegionProfile +
TectonicClass/GlaciationGrade/PrecipitationClass enums + BodyParams; derived
per-region river_threshold replacing the global 200 for tile consumers.
regions: BTreeMap on BodyWorldState, populated via the cascade's new
RegionProfile layer (runs when body_params is Some, else falls back to
Settlement). D-010 integer discipline, BTree ordering.
T-1024 — District climate primitives (D-239 §2): nullable temperature_c +
moisture on RegionProfile, mean-annual scalar (no clock dep; dynamic branch
deferred to Q-105). Hybrid inputs — new bodies.axial_tilt_deg column imported
from planet-gen body-defs (populate_axial_tilt_deg, 2611 bodies), luminosity
and orbital distance derived at runtime; greenhouse + diurnal-swing tables in
source-canonical climate_constants.toml. D-239 implementation note added.
cargo test: 1498 passed, 0 failed. clippy clean (pre-existing
large_enum_variant only). make check-systems-db: stamp fresh.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Addresses the Hoshe (QA) + Tyre (architecture) review of the SeedChain/cascade
work:
- Golden was pinning an empty river network (128x64 produced 0 river cells).
Bumped to 256x128, where GJ1c yields a real network (93 river cells, 19
mouths) — Layer 1's rivers are now actually guarded, not just attractors.
- SeedChain::for_body(world_seed, body_id) + fnv1a_64: the single canonical
body_id(String) -> u64 path (FNV-1a, the repo convention), so callers can't
derive divergent worlds from the same seed via different ad-hoc hashes. The
golden now uses it.
- Stability guards: seed_domain_discriminants_are_pinned test (CI fails if a
SeedDomain tag is renumbered); AttractorType gains #[repr(u8)] + explicit
discriminants (it's cast as a sort key in features.rs).
- Tests: SeedChain::root(0) non-degenerate; run_cascade error path (missing
file -> Err, not panic).
- Comments: clarified the id=0 derivations (sibling separation is caller-side
via the per-district/quarter chain; #957 threads the index), tightened the
all_district_types reachability comment (it pins the seed-0 sequence, not a
probabilistic claim), and noted the golden's WORLD_SEED is cosmetic at
Layers 0-1 + the x86_64 f32 capture caveat.
Deferred with reason: the run_cascade -> CascadeInputs struct refactor (Tyre)
is left for #954 — designing Layer-2's context shape now would be later-phase
detail, and there's a single caller to migrate then. EntityRng keeps its
domainless combine (migrating is stream-changing) — noted in D-224.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
New top-level seed module that owns every deterministic-RNG primitive:
- splitmix64 — the one canonical mixer (was duplicated as a private fn in
simulation/rng.rs; EntityRng now imports the shared one, no behavior change)
- AtlasRng — moved here from atlas/rng.rs (it is a generation-RNG primitive,
not atlas-specific); atlas now depends on seed, not the reverse
- SeedDomain — append-only domain tags (Body/Layer1Topography/Layer3Settlement/
Layer4Quarter/Block/Npc) for collision-proof per-domain seed separation
- SeedChain — root(world_seed) → derive(domain, id) → atlas_rng()/seed(), per
the D-224 formula splitmix64(self ^ splitmix64(domain)) ^ splitmix64(id)
Structural move only — SeedChain is not yet threaded through the cascade
callers (skeleton_gen still uses ad-hoc wrapping_add pre-mixing); that is the
next step. Unit tests cover the splitmix64 known-vector, avalanche,
determinism, domain/id separation, and chain composition.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5