Fr0zkaandClaude Opus 5.5
5ea01988c4
Owner design: flat world-horizontal floor (0.50 m corner blend), 0.75 m solid shell written only where the host field is air (interiors union first and beat every shell), 5 m cubic mouth ramps. Removed route support restoration, deferred support, support columns, mouth-support restoration and their capsule checks (-5,129 / +1,641 lines). Near-ready @W12: FI 1.39 -> 0.86, TN 1.29 -> 0.90, VS 0.85 -> 0.74, SW 0.70 -> 0.76 s (more shell/skirt surface). All walk audits pass; Clang/GCC W1/W8/W12 deterministic; fast tier PASS; Linux UE builds; 6 UE arrival traces pass. OPEN ISSUE: open-air shell (e.g. passage 0-1, 1037-1489 m route span) shows a regular stepped banding pattern - not merged into assembler/world until fixed/approved. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
71 lines
6.8 KiB
Markdown
71 lines
6.8 KiB
Markdown
# Linux 109 — tunnel floor and shell
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Baseline: `assembler/world` HEAD `95cf8de10723f2dffe7b3dfc116ecf350c7114ae`. Candidate source stamp: `9457b9bed7d57a4a387828961f9dd53632ec602eb5ea8f247b087be6ca5cc312` (evaluator v217).
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## Shape
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The per-tile swept tube now uses a horizontal flat floor, a 0.50 m smooth floor-to-wall corner, and a 0.75 m shell. Body floor depth is fixed per passage at the minimum interior radius minus 0.23 m, capped at the local radius. Five-metre cubic blends ramp both mouths into their ground; the lower mouth follows the matching authored native-cave floor where one exists. The route centreline shifts through radius tapers to keep that floor walkable. A small wall relief remains for naturalness.
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The passage interiors are unioned first and always win over every passage shell, including at coiled crossings. The shell writes solid only where the host field is air; rock remains unchanged. There is no rock classification. Open-air shell and interior samples pass in the owner audit.
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## Removed and retained
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Removed route support restoration, deferred support after later bores, support columns, mouth-support restoration, and their floor-specific capsule checks and profiling records. Replaced the old open-air/column audit gates with the shell audit and removed the no-long-bridge and rock-column gates, which measured the deleted support mechanism. Walkability, capsule, headroom, grade, mouth, naturalness, and ripple gates remain. Floor-ripple probes fully masked by another passage's interior air are skipped only when the overlap is explicit; capsule walkability still has to pass.
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Kept the native Lattice field's explicitly authored below-floor substrate because its spine needs it for walkability; this is part of that native field, not route support restoration. The legacy landmark demo retains its compatibility floor-cap path, which is separate from the resolved route sweep. Native Caves and Lattice fast checks pass.
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## Performance
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Five interleaved L80 pairs per cell, after one warmup for each binary; seconds are median `LOD0–2 near-ready / whole-view-ready`. Baseline binary is from `assembler/world` HEAD. Tile counts matched within each cell.
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| Strate | W8 near | W8 whole | W12 near | W12 whole |
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|---|---:|---:|---:|---:|
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| SW | 0.680 → 0.737 (+8.3%) | 1.686 → 1.674 (−0.7%) | 0.700 → 0.761 (+8.8%) | 1.643 → 1.644 (+0.1%) |
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| FI | 1.455 → 0.911 (−37.4%) | 2.419 → 1.772 (−26.8%) | 1.394 → 0.863 (−38.0%) | 2.288 → 1.664 (−27.3%) |
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| TN | 1.423 → 0.956 (−32.8%) | 2.310 → 1.778 (−23.0%) | 1.294 → 0.895 (−30.9%) | 2.132 → 1.661 (−22.1%) |
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| VS | 1.008 → 0.789 (−21.8%) | 1.917 → 1.639 (−14.5%) | 0.854 → 0.738 (−13.5%) | 1.716 → 1.541 (−10.2%) |
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There is no broad regression. SW near-ready is about 0.06 s slower; its whole-view time is flat. **Measured:** SW LOD0–2 skirt triangles rise from 133,894 to 196,602, and summed skirt work rises from 455 to 743 ms at W8 and 650 to 1,044 ms at W12. **Inference:** the added open-air shell surface and skirts explain the small SW near-ready cost. FI, TN, and VS improve at both readiness marks.
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## L77 phase census
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Two samples per case. Entries are `share / estimated worker-s`; estimates use weighted L77 samples times `WorldAssemblerLODWorker` CPU, so they are not direct phase timers.
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| Case | Base passage | Base support | Candidate passage | Candidate support |
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|---|---:|---:|---:|---:|
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| FI near | 44.62% / 4.108 | 14.84% / 1.366 | 22.90% / 1.133 | 0% / 0 |
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| FI whole | 29.31% / 4.874 | 8.08% / 1.344 | 10.59% / 1.206 | 0% / 0 |
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| TN near | 38.57% / 3.318 | 14.74% / 1.267 | 19.43% / 1.019 | 0% / 0 |
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| TN whole | 24.48% / 3.824 | 7.59% / 1.186 | 9.25% / 1.074 | 0% / 0 |
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The sampled support share disappears. Baseline estimates were 1.19–1.37 worker-s across these cases, below the 1.6–1.9 s expectation.
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## Audits and determinism
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The full-view all-LOD audit passes: 21,425/21,425 canonical passage centreline samples are open. All three interfaces pass capsule and support checks with zero blocked or unsupported samples, zero grade failures, and both mouths bound (2/2). Capsule samples: 266,175 (0–1), 15,120 (1–2), 64,764 (2–3). The shell audit sampled 89,365 floor points, 8,423 wall points, and 10,527 interior points: zero floor, wall, or interior violations; 22,755 open-air shell samples. Naturalness, mouth profile, and ripple summaries pass 3/3, with negative controls detected. Derived floor grade peaks at 14.49°; fast native Caves headroom is 0.30 m and native Lattice headroom is 2.20 m.
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Fast tier: PASS, 259 PASS checks plus 5 diagnostics across 80 runs. The Clang/GCC hash matrix matches at W1/W8/W12 for the owner four-strata layout and both two-strata canonical recipes. The v217 canonical pins were written for Surface World style 1 and Floating Islands style 2.
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Because Core sources are Unreal-compiled, the Linux VFHostEditor build passed with `-NoUBA -MaxParallelActions=4` (27 actions, 67.4 s). Three FI and three SW `after` arrival traces also passed, each settling its full requested LOD0–2 set. Unreal processes had no `prlimit`.
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## Change metrics
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LOD0–2 camera mesh windows; “moved” means a shared global lattice crossing displaced by more than 0.01 cm. Coverage is the paired edge-classifier coverage.
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| Strate | Added | Removed | Moved | Coverage |
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| SW | 78,201 | 14,530 | 2,758 | 99.75% |
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| FI | 37,810 | 42,398 | 78,215 | 98.31% |
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| TN | 44,694 | 48,925 | 48,816 | 98.29% |
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| VS | 7,055 | 7,096 | 8,790 | 97.38% |
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## Captures
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84 PNGs: before and after, each with both mouths and 25/50/75% stations for all three passages. Each of the nine open-air sections has three views in each set. The [capture index](captures/INDEX.md) lists every image and flags every **OPEN AIR** view. All 84 source meshes and rendered views contain geometry; minimum visible triangles are 55,420 before and 55,484 after. Six before and seven after images met the pixel floor but were flagged low contrast for review.
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Open-air sections (route distance in metres): `0–1`: 7.226–10.217, 13.456–17.443, 23.174–24.918, 1036.913–1489.321; `1–2`: 101.820–104.499; `2–3`: 7.677–34.747, 368.909–376.660, 393.828–396.510, 444.932–447.654.
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## Failed runs
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Early fast runs found a 0.79 m lower-mouth mismatch at native Caves and loss of the native Lattice route substrate; the mouth now matches the authored cave edge floor, and the explicitly authored Lattice floor field is retained. A sentinel check also initially treated the “no native floor” value as support; this was fixed. The first Unreal build stopped before compilation because UnrealBuildTool could not rotate its log under read-only `~/.config`; redirecting `XDG_CONFIG_HOME` to `/tmp` fixed it. Final audits, timings, hash runs, crossings, captures, build, and six traces passed. No run exceeded 30 minutes.
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