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Author	SHA1	Message	Date
jing	111ade7d12	[lane A] The swept room + the acid sea, built — and it corrected me four times The shape read in LANE_A_NOTES was written from reading code, so I built it to find out if it was true. Flyable: web/dev/laneA_world.html?dbg=1&assets=1&lvl=swept Nothing here is imposed on anyone: every addition is additive and a level that opts out behaves exactly as today. C can bin the whole proposal and lose nothing. WHAT THE PROTOTYPE DISPROVED (my own cost estimates, all four): - "radial resolution must scale with radius" — wrong. 64 segments is a 0.05u circle error at r=70. The arena needs it because it fbm-displaces; the tube's wave is smooth in theta. No change made. - "cap geometry at the span ends" — a thinko. The canal is continuous; a room is a fat part of it. Only the fundus dome caps, and it stays an icosphere. - cost — cheaper than feared: 9 draws / 98k tris worst-frame for a radius-70 cathedral vs 8 / 74k for the L2 corridor. No leak over a full sweep. - "one schema flag" — held. `segments[].mode: "open"` is the entire ask. THE TWO REAL COSTS, NEITHER PREDICTED: 1. D's `tile[0]` is a COUNT, not a density — only a texel size if radius never changes. Measured 6.1:1 smear at r=70. The wall now derives the count from each ring's own arc length (aRadius attr + uThetaSpan); D's authored numbers keep their exact meaning at their reference radius, no re-authoring. That fix then laid a seam down the canal (a fractional count can't wrap) -> rounded to an integer, seam gone. Not a no-op on corridors: L2's hiatus takes 3 repeats where it took 4, which is the texel size correctly holding still as the pipe narrows. Eyeballed. 2. MY OWN PINCH GUARD WAS WRONG and would have blocked C. The fixture scored 1.30 and "failed" the >1.5 law; it was never bent. stats() divided the tightest turn ANYWHERE by the widest radius ANYWHERE — 996 units apart, a bend in the radius-13 pylorus against the radius of the sea. Locally its worst point is 6.4. pinchRatio is now min over s of turnRadius(s)/radius(s). Provably one-directional (global <= local by construction) so nothing that passed can fail; real levels GAINED headroom: L2 3.32->4.16, L3 1.91->6.99, L1 2.11->6.06. This mattered — the guard is what backs the round-1 promise that C never has to think about curvature. THE ACID SEA (world/acid.js, `level.acid {from,to,height,biome}`): Flat emissive #c8ff3a, level and NOT tube-following — that's the mechanic. The best find of the session: `height` is ONE NUMBER that tunes the level. Measured: -18 -> 0% of the sea floor is dry shallow, -55 -> 14%, -62 -> 48%. So C's "position IS the resource" falls out of the radius wobble they already author — the mucus shallows are just "where the wall rises above the waterline", nothing to place — and rising acid literally drowns them: free escalation, same scalar their event pump drives. Also disproved my own claim: the centreline stays level (+/-1u over 700u), so shallows come from radius wobble, NOT the canal's bends. C must author vertical bends deliberately if they want depth by anatomy. Stated plainly, not papered over: the waterline is prototype quality (the plane meets faceted rings and the shoreline steps). Acid does not drain the coat — depthAt(pos) is the hook and the cost is Lane B's call. Nothing drives height but DBG until C's events do. qa GREEN incl. the new provenance gate; spline selfcheck green; L2 corridor re-eyeballed for regression. Rulings requested from F in NOTES §-> Lane F. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-16 18:04:16 +10:00
jing	f0982e70c3	[lane A] Round 2 WIP (session cut off): crest-speed law, taper blending, schema-v2 wave, TBN walls Landed before the cut: crestSpeed(s) + CREST_FACTOR 1.6 (ruling #1) with selfcheck asserts; radius blend widened +/-12 -> +/-25 (C's #4 dependency) + no-cliff selfcheck; per-segment wave.amp override as per-vertex aWaveA (ruling #8); colorspace law in the wall shader (ruling #2); TBN normal maps + matcap + dual detail layers (D's perturb(), trap documented in-shader); sample(s, out) v1.2; slug map shrunk to the two real mismatches. Evidence: docs/shots/laneA/round2_L2_*.png. Cut off before: NOTES/progress, stomach-arena shape read for C (task #7). Committed by F to protect the shared tree; spline + qa selfchecks GREEN at commit time. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-16 16:26:01 +10:00
jing	689c478a7f	[lane A] Round 1: the canal v0 — spline, streaming tube, scanner wall, arenas Implements THE WORLD CONTRACT (TECH.md) in web/js/world/; drop-in for the stub. boot.js now runs this on C's L2_esophagus (3600u, hash cefc4f83), zero console errors. - spline.js: centreline + arclength LUTs + parallel-transport frames + radius law + peristalsis phase + project() + hash(). No three.js import, so qa can run its 14-assertion selfcheck headless. - curviness is solved from a curvature budget, not authored as an amplitude: the pinch guard caught the tube folding through itself on a wide+curvy join (turn radius 9.9 vs tube radius 17.2). C can no longer author a pinch. - peristalsis: global OMEGA, k(s) = OMEGA/flow(s), phase K(s) = integral k ds. A crest therefore travels at exactly the local flow speed, so "surf the crest" == "ride the current". Esophagus wave amp 0.9 -> 1.4 (measured): moves wallRho for Lane B. - tube.js: chunked streaming, seams aligned to biome joins, arenas own their s-span. - arena.js: displaced icosphere shells v0 (three's polyhedron detail is 20(detail+1)^2, not 204^detail — 720 tris was far too coarse); fog sized to the room, since biome fog tuned for 100u corridors renders C's 360u acid sea as a black rectangle. - index.js: prefers assets.texture() over get() (get returns raw JSON a shader can't eat), plus an explicit slug map — D's wall_smallint_a vs biome id small_intestine would miss silently forever under the assets-optional law. Measured (C's real L2 + D's real pack, 1920x1080, renderer.info): 8 draws worst frame (budget 150), 74k tris (500k), no geometry leak across a full sweep, <120ms load, pinch ratio 3.32. fps not claimed — the screenshot pane runs tabs hidden, pausing rAF. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>	2026-07-16 08:59:19 +10:00

Author

SHA1

Message

Date

jing

111ade7d12

[lane A] The swept room + the acid sea, built — and it corrected me four times

The shape read in LANE_A_NOTES was written from reading code, so I built it to
find out if it was true. Flyable: web/dev/laneA_world.html?dbg=1&assets=1&lvl=swept
Nothing here is imposed on anyone: every addition is additive and a level that
opts out behaves exactly as today. C can bin the whole proposal and lose nothing.

WHAT THE PROTOTYPE DISPROVED (my own cost estimates, all four):
- "radial resolution must scale with radius" — wrong. 64 segments is a 0.05u
  circle error at r=70. The arena needs it because it fbm-displaces; the tube's
  wave is smooth in theta. No change made.
- "cap geometry at the span ends" — a thinko. The canal is continuous; a room is
  a fat part of it. Only the fundus dome caps, and it stays an icosphere.
- cost — cheaper than feared: 9 draws / 98k tris worst-frame for a radius-70
  cathedral vs 8 / 74k for the L2 corridor. No leak over a full sweep.
- "one schema flag" — held. `segments[].mode: "open"` is the entire ask.

THE TWO REAL COSTS, NEITHER PREDICTED:
1. D's `tile[0]` is a COUNT, not a density — only a texel size if radius never
   changes. Measured 6.1:1 smear at r=70. The wall now derives the count from
   each ring's own arc length (aRadius attr + uThetaSpan); D's authored numbers
   keep their exact meaning at their reference radius, no re-authoring. That fix
   then laid a seam down the canal (a fractional count can't wrap) -> rounded to
   an integer, seam gone. Not a no-op on corridors: L2's hiatus takes 3 repeats
   where it took 4, which is the texel size correctly holding still as the pipe
   narrows. Eyeballed.
2. MY OWN PINCH GUARD WAS WRONG and would have blocked C. The fixture scored
   1.30 and "failed" the >1.5 law; it was never bent. stats() divided the
   tightest turn ANYWHERE by the widest radius ANYWHERE — 996 units apart, a
   bend in the radius-13 pylorus against the radius of the sea. Locally its
   worst point is 6.4. pinchRatio is now min over s of turnRadius(s)/radius(s).
   Provably one-directional (global <= local by construction) so nothing that
   passed can fail; real levels GAINED headroom: L2 3.32->4.16, L3 1.91->6.99,
   L1 2.11->6.06. This mattered — the guard is what backs the round-1 promise
   that C never has to think about curvature.

THE ACID SEA (world/acid.js, `level.acid {from,to,height,biome}`):
Flat emissive #c8ff3a, level and NOT tube-following — that's the mechanic. The
best find of the session: `height` is ONE NUMBER that tunes the level. Measured:
-18 -> 0% of the sea floor is dry shallow, -55 -> 14%, -62 -> 48%. So C's "position
IS the resource" falls out of the radius wobble they already author — the mucus
shallows are just "where the wall rises above the waterline", nothing to place —
and rising acid literally drowns them: free escalation, same scalar their event
pump drives. Also disproved my own claim: the centreline stays level (+/-1u over
700u), so shallows come from radius wobble, NOT the canal's bends. C must author
vertical bends deliberately if they want depth by anatomy.

Stated plainly, not papered over: the waterline is prototype quality (the plane
meets faceted rings and the shoreline steps). Acid does not drain the coat —
depthAt(pos) is the hook and the cost is Lane B's call. Nothing drives height but
DBG until C's events do.

qa GREEN incl. the new provenance gate; spline selfcheck green; L2 corridor
re-eyeballed for regression. Rulings requested from F in NOTES §-> Lane F.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-16 18:04:16 +10:00

jing

f0982e70c3

[lane A] Round 2 WIP (session cut off): crest-speed law, taper blending, schema-v2 wave, TBN walls

Landed before the cut: crestSpeed(s) + CREST_FACTOR 1.6 (ruling #1) with selfcheck
asserts; radius blend widened +/-12 -> +/-25 (C's #4 dependency) + no-cliff selfcheck;
per-segment wave.amp override as per-vertex aWaveA (ruling #8); colorspace law in the
wall shader (ruling #2); TBN normal maps + matcap + dual detail layers (D's perturb(),
trap documented in-shader); sample(s, out) v1.2; slug map shrunk to the two real
mismatches. Evidence: docs/shots/laneA/round2_L2_*.png.

Cut off before: NOTES/progress, stomach-arena shape read for C (task #7).
Committed by F to protect the shared tree; spline + qa selfchecks GREEN at commit time.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-16 16:26:01 +10:00

jing

689c478a7f

[lane A] Round 1: the canal v0 — spline, streaming tube, scanner wall, arenas

Implements THE WORLD CONTRACT (TECH.md) in web/js/world/; drop-in for the stub.
boot.js now runs this on C's L2_esophagus (3600u, hash cefc4f83), zero console errors.

- spline.js: centreline + arclength LUTs + parallel-transport frames + radius law +
  peristalsis phase + project() + hash(). No three.js import, so qa can run its
  14-assertion selfcheck headless.
- curviness is solved from a curvature budget, not authored as an amplitude: the pinch
  guard caught the tube folding through itself on a wide+curvy join (turn radius 9.9 vs
  tube radius 17.2). C can no longer author a pinch.
- peristalsis: global OMEGA, k(s) = OMEGA/flow(s), phase K(s) = integral k ds. A crest
  therefore travels at exactly the local flow speed, so "surf the crest" == "ride the
  current". Esophagus wave amp 0.9 -> 1.4 (measured): moves wallRho for Lane B.
- tube.js: chunked streaming, seams aligned to biome joins, arenas own their s-span.
- arena.js: displaced icosphere shells v0 (three's polyhedron detail is 20*(detail+1)^2,
  not 20*4^detail — 720 tris was far too coarse); fog sized to the room, since biome fog
  tuned for 100u corridors renders C's 360u acid sea as a black rectangle.
- index.js: prefers assets.texture() over get() (get returns raw JSON a shader can't eat),
  plus an explicit slug map — D's wall_smallint_a vs biome id small_intestine would miss
  silently forever under the assets-optional law.

Measured (C's real L2 + D's real pack, 1920x1080, renderer.info): 8 draws worst frame
(budget 150), 74k tris (500k), no geometry leak across a full sweep, <120ms load,
pinch ratio 3.32. fps not claimed — the screenshot pane runs tabs hidden, pausing rAF.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-16 08:59:19 +10:00

3 Commits