- Treat k <= -1 as "other zone contains this rim" so a level-1 gate
tether at exactly the level-2 anchor's range no longer draws a spurious
full circle inside the union.
- Update doc comment to clarify external vs internal tangency cases.
- Add regression tests covering the d + rInner = rOuter boundary case.
- Add spacestation music and surface video assets.
- Reduce maxLevel from 12 to 3 in data/tether.json
- Remove the tether_l4 entry from exploration.json; tether_l3 now has empty unlocks
- Update research-builds and tether tests to reflect the shorter chain (3 layout rows, level checks for 1–3 only)
- Revise PROJECT_NOTES.md to describe the 3-level progression
- Change radiusGrowth from 1.25 to 2.0 so level N doubles the previous
level (L2 = 10240, L3 = 20480, L4 = 40960 px)
- Update all data descriptions, docs, and test defaults to match
- Add refreshHudTetherLevel() in SurfaceScene so the HUD line re-decodes
when a tether build completes while on-surface
- Rename rocky-planet-02 asset (typo fix), add 03-a/03-b variants,
point rocky frames at indices 6–8 in planets.json
- Add dev/tether-flow harness to exercise the full L2 build flow end-to-end
The player starts with a level-1 tether anchored on the home world:
a circular zone 5120 px from the planet's center. The ship may fly
anywhere in the UNION of its tethers' zones — where zones overlap there
is no line and no wall — and the union's boundary is a hard barrier,
rendered as a thick cyberpunk glitch dotted line (marching dashes,
additive glow + RGB fringe, ambient glitch bursts with dash flicker,
radial displacement and data drops, contact shudder + camera kick +
throttled console toast where the ship bumps it).
- data/tether.json: level radii (5120 x 1.25^lv), the starting tether,
barrier line/look, glitch and contact tuning (manifest-registered)
- js/tether/Tether.js: pure range math (union membership, clamp to the
nearest union boundary point + normal, visibleArcs = each tether's
share of the union boundary) — Node-tested
- js/tether/TetherField.js: scene-facing field — add/remove/setLevel
seam for future builds/upgrades, per-frame ship constraint, and the
barrier renderer (on-screen dot culling only)
- js/scenes/GameScene.js: home tether at the system origin, HUD
readout (level / range / anchor per tether), click-to-fly and
autopilot targets clamped to the union boundary, contact feedback,
destruction on shutdown
- dev/tether.test.mjs: 29 checks incl. the two-direction boundary
property (no line in overlaps, no gaps in the line) and a numeric
nearest-boundary cross-check (worst 0.79 px)
- dev/smoke-game.mjs: ?tethers / ?homeLevel / ?report dev hooks for
manual and headless verification
- README + PROJECT_NOTES: the system, its rules and its layering
Verified in headless Chromium: clean boot (menu + game), barrier
rendering (calm and glitch-burst frames), union boundary with two
tethers (arcs meet at the rim crossings, lens is line-free), ship
clamped exactly onto the rim from outside, contact toast fired.
Brian Fertig