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>
Flight (js/flight/): tube-mode controller in spline space (s,x,y) — flow-locked
forward motion, throttle as a spring-back lean, boost + i-frames, banking chase
cam on the parallel-transport frame, arcade wall response (shove + graze damage,
never a hard stop). Twin-stick input: WASD/left-stick moves the ship in the disc,
mouse/right-stick aims, Shift/Ctrl is throttle. Gamepad supported.
Combat (js/combat/): lysozyme cannon (pooled, instanced, heat-limited with
hysteresis lockout) + antacid torpedo emitting level:neutralize. Enemy framework
with floater/seeker/turret and turn-rate-limited homing darts, spawned from C's
level:event. Coat/hull model and the full bus surface E builds against.
Measured (deterministic stepper): flow-lock exact (3s at flow 14 -> s=44.0);
boost peak 30.8 u/s; heat 4s fire -> 2s lockout; wall slam 13.3 coat at 11.3 u/s
with forward speed untouched; 10 combat draws at 55 live enemies (budget <=80);
0.10 ms/frame CPU; 0 leaks over 20 create/dispose cycles. fps NOT claimed — rAF
does not run in the automated pane. Evidence: docs/shots/laneB/.
Three findings escalated in LANE_B_NOTES:
- qa.sh gate #1 is a no-op: node --check silently exits 0 on ESM, so the syntax
gate has never checked anything. I shipped a real SyntaxError past a GREEN qa.
Fix + verification handed to F.
- Surf is structurally broken: the peristalsis wave (13.64 u/s) is slower than
the player (19.6 u/s), so level 2's signature mechanic loses to mashing
throttle. Not tunable from this lane; escalated to A/F with options.
- Custom ShaderMaterials need #include <colorspace_fragment>, else ART_BIBLE's
hostile amber reaches the display as rgb(255,26,6). Fixed here; stub/walls
inherit it.
js/flight/dev.html is a dev harness (boot.js has no player wiring yet); it
retires once F pastes the snippet in LANE_B_NOTES.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
