Claude (auto-RE)
e3f3d55d29
Second screen, independent of the pause work: GP_TITLE.pak's ptbtn01..05.rat give X=542 for all five items and Y=162/242/322/402/482, an 80px pitch where the pause menu used 70. Measured against the main-menu screenshot the sprite tops sit at a constant +46px for all five, which is exactly the 45px of Xenia window chrome plus one — so the record's Y is the sprite's top edge in the guest framebuffer, to the pixel, on a screen the format was not derived from. GP_TITLE also splits by sub-screen the way the pause pak splits by context: ptbtn00 (PRESS A BUTTON), ptbtn01..05 (main menu), ptbtn11..13 (EXTRAS submenu), pgloading_* (loading screen). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
34 lines
3.3 KiB
Markdown
34 lines
3.3 KiB
Markdown
# RE knowledge index
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Confidence: ✅ `CONFIRMED` · 🟡 `PROBABLE` · ❔ `HYPOTHESIS`. See [README](README.md).
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Formats we've already reversed are, for now, **documented by their parser + disc round-trip
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tests** (the executable spec) rather than a prose file — the "Spec" column points there.
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Promote to a prose `structures/…md` file when a format needs behavioural notes beyond layout.
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## Data structures / formats
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| Format | Conf. | Spec (parser + tests) | Notes |
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|--------|-------|-----------------------|-------|
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| IPFB `.pak` archive | ✅ | `sylpheed-formats/src/pak.rs` + `tests/pak_idxd_disc.rs` | header + 12-byte TOC, Z1/zlib payloads |
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| name-hash (TOC keys) | ✅ | `sylpheed-formats/src/hash.rs` | Barrett-reduction hash; recovers original paths |
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| IDXD object/table | ✅ | `sylpheed-formats/src/idxd.rs` | self-describing; ship/weapon stats verified vs known values |
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| XPR2 texture + cubemap | 🟡 | `sylpheed-formats/src/texture.rs` | de-tile + A8R8G8B8; **colours unverified** (dynamic item) |
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| T8aD 2D texture | 🟡 | `sylpheed-formats/src/t8ad.rs` | ~85% decode; **colours ✅ CONFIRMED** ([k8888](structures/texture-color-k8888.md)); ~15% variants deferred |
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| RATC bundle | 🟡 | `sylpheed-formats/src/ratc.rs` | child listing confirmed; one level deep |
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| LSTA sprite list | 🟡 | `sylpheed-formats/src/lsta.rs` | inline T8aD frames |
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| IXUD subtitle | 🟡 | `sylpheed-formats/src/ixud.rs` | timed cues; **movie↔track link unknown** (dynamic item) |
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| Fonts (ttf/otf/ttc) | ✅ | `sylpheed-formats/src/font.rs` | standard OpenType, parsed via ttf-parser |
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| XBG7 mesh | 🟡/❔ | `sylpheed-formats/src/mesh.rs` + `tests/mesh_disc.rs` ([xbg7](structures/xbg7-mesh.md)) | weapons/props: declaration-driven variable stride (36 models), GPU-confirmed. **Stage containers: 5662 sub-models across 22 stages** via content-anchored grouped pools (`stage_models`). Quantized hero bodies (DeltaSaber `f004`) still declined |
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| Capital-ship part placement | 🟡 | `sylpheed-formats/src/ship.rs` (static) + [runtime capture](ship-placement-runtime-capture.md) | hull placement static-exact; external parts approximate statically. **Runtime capture** (Canary F10 → VS-constant WorldView) gives ground truth — validated on `e106` destroyer; not yet baked into the viewer |
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| Weapon fields defaulted on disc | ✅/🟡 | [runtime DATA SHEET](weapon-datasheet-runtime.md) | The Arsenal Gallery-Mode panel reads the live record: `Ammo Capacity` = `LoadingCount` ✅, `Max. Lock Ons` = `TriggerShotCount` ✅. Recovers `TriggerShotCount` for `wep_05`/`wep_60` (both **4**); brackets defaulted `Power`/`MaximumRange` via the letter classes. 9 of ~61 weapons reachable at 5 % save progress |
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| UI screen layout (`.rat`) | ✅/🟡 | [ui-rat-layout](structures/ui-rat-layout.md) | One pak per UI screen; each RATC = one (context × language) build; every `<name>.t32` sprite has a `<name>.rat` **layout record** (BE u32; 1280×720 design space; scale/tint/X/Y, keyframes for animated elements, `opt ` link to the focused state). **The tutorial PAUSE menu and the title main menu both rebuild pixel-accurately from the disc.** `loop1.rat` (screen-level draw order) not yet decoded |
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## Functions / code paths
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_None documented yet — populated during the dynamic-RE phase._
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| Function | Conf. | Reimpl. | Summary |
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|----------|-------|---------|---------|
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| — | — | — | — |
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