jpmschweitzerandClaude Opus 4.8
def70eaf37
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>
59 lines
2.6 KiB
TOML
59 lines
2.6 KiB
TOML
# Climate constants for district temperature derivation (T-1024, D-239 §2).
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#
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# Source-canonical — loaded by the Rust simulation at runtime.
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# These values mirror the tuned constants from tooling/planet-gen/planet_simulation.py.
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# Changing these constants does NOT require a DB migration (runtime file, not DB).
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# To tune: edit here, rerun the server, inspect Atlas temperature maps.
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#
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# Two tables are required:
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# [greenhouse_offset_c] — mean-annual base temperature offset by atmosphere class.
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# [diurnal_amplitude_c] — day/night swing AMPLITUDE by atmosphere class.
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#
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# Temperature derivation formula (D-239 §2):
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# T_base = T_stellar_equilibrium + greenhouse_offset_c[atmosphere]
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# T_mean = T_base + latitude_term + elevation_lapse_term
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# T_diurnal_amplitude = diurnal_amplitude_c[atmosphere]
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#
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# No atmosphere → temperature_c = None (airless body; D-227).
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[greenhouse_offset_c]
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# Greenhouse warming contribution per atmosphere class (°C above bare rock).
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# "none" is not present — airless bodies skip the climate branch entirely (D-227).
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# Values from planet_simulation.py STAR_LUMINOSITY + greenhouse table.
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thin = 8
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standard = 33
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toxic = 33 # treated as standard greenhouse for thermal purposes
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breathable = 33 # synonym for standard
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dense = 80
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[diurnal_amplitude_c]
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# Day/night swing amplitude (°C). The actual swing is ±amplitude around the
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# mean temperature; the morning minimum is T_mean - amplitude, noon maximum is
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# T_mean + amplitude. Thick/dense atmosphere = small swing (heat redistribution);
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# thin/no atmosphere = large swing.
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#
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# "none" is excluded — airless bodies have no climate temperature (D-227).
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# Values are plausible physics; tune without recompile by editing this file.
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thin = 50 # ~50°C day/night swing: large, like Mars
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standard = 15 # ~15°C: Earth-like moderate swing
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toxic = 20 # intermediate: thick but maybe less redistribution
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breathable = 15 # synonym for standard
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dense = 3 # ~3°C: Venus-like near-uniform temperature
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# ---------------------------------------------------------------------------
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# Stellar luminosity lookup (relative to Sol = 1.0).
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# Midpoint per spectral type, matching planet_simulation.py STAR_LUMINOSITY.
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# Used to derive distance_au at runtime from orbital_period_days via Kepler's 3rd law.
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#
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# These values are also used to compute T_stellar_equilibrium:
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# T_eq_K = 278.5 * (luminosity ^ 0.25) / sqrt(distance_au)
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# ---------------------------------------------------------------------------
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[star_luminosity]
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O = 100000.0
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B = 1000.0
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A = 10.0
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F = 2.5
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G = 1.0
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K = 0.4
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M = 0.04
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