Claude (auto-RE)
2fa4c33d1a
Craft stats were the last parked Route-B target: the Hangar exposes only a weight class, and in menus the flight-model object is not instantiated at all. It is instantiated in-mission, so this reads it there. The definition class is discovered rather than assumed (unit_discover.py): scanning for pointers to the disc ID strings and tallying the word behind each pointer site picks out vtable 0x820af844 -- one object per unit ID, name-record pointer at +0x04, string at +0x10, exactly the Weapon shape. The neighbouring class 0x820af030 is the spawned entity, not the definition; the two are told apart by one-object-per-ID and by 14/14 objects being byte-identical across two snapshots 12 minutes and one firefight apart. 22 fields bind with zero contradictions on >=3 distinct values. Beyond that, the Maneuver sub-record turns out to be laid out in schema declaration order, 4 bytes per field, base 0x9c with a two-slot gap after AA_Roll_Min -- 29 independently solved anchors fit two exact bases with no conflicts. That rule pins five fields NO unit table ever values (PitchDragFactor, RollDragFactor, DragFactorThreshold, ArterBurner_Acc, DecPitchFactor); PitchDrag == RollDrag == the disc's YawDrag on 18/18 units corroborates the interpolation. Angles are float32 radians at runtime and degrees on disc. Coverage is 18 of 110 units: unlike weapons, unit definitions are instantiated per stage, so it grows by visiting missions. The AI-behaviour tail of Maneuver is explicitly NOT resolved and marked tentative in the CSV. Captured from Xenia Canary (BASIC CONTROLS tutorial + Stage 02 from save 01).
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5.1 KiB
RE knowledge index
Confidence: ✅ CONFIRMED · 🟡 PROBABLE · ❔ HYPOTHESIS. See README.
Formats we've already reversed are, for now, documented by their parser + disc round-trip
tests (the executable spec) rather than a prose file — the "Spec" column points there.
Promote to a prose structures/…md file when a format needs behavioural notes beyond layout.
Data structures / formats
| Format | Conf. | Spec (parser + tests) | Notes |
|---|---|---|---|
IPFB .pak archive |
✅ | sylpheed-formats/src/pak.rs + tests/pak_idxd_disc.rs |
header + 12-byte TOC, Z1/zlib payloads |
| name-hash (TOC keys) | ✅ | sylpheed-formats/src/hash.rs |
Barrett-reduction hash; recovers original paths |
| IDXD object/table | ✅ | sylpheed-formats/src/idxd.rs |
self-describing; ship/weapon stats verified vs known values |
| XPR2 texture + cubemap | 🟡 | sylpheed-formats/src/texture.rs |
de-tile + A8R8G8B8; colours unverified (dynamic item) |
| T8aD 2D texture | 🟡 | sylpheed-formats/src/t8ad.rs |
~85% decode; colours ✅ CONFIRMED (k8888); ~15% variants deferred |
| RATC bundle | 🟡 | sylpheed-formats/src/ratc.rs |
child listing confirmed; one level deep |
| LSTA sprite list | 🟡 | sylpheed-formats/src/lsta.rs |
inline T8aD frames |
| IXUD subtitle | 🟡 | sylpheed-formats/src/ixud.rs |
timed cues; movie↔track link unknown (dynamic item) |
| Fonts (ttf/otf/ttc) | ✅ | sylpheed-formats/src/font.rs |
standard OpenType, parsed via ttf-parser |
| XBG7 mesh | 🟡/❔ | sylpheed-formats/src/mesh.rs + tests/mesh_disc.rs (xbg7) |
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 |
| Capital-ship part placement | 🟡 | sylpheed-formats/src/ship.rs (static) + runtime capture |
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 |
| Weapon fields defaulted on disc | ✅ | runtime struct · DATA SHEET route | Solved. Canary maps guest RAM into /dev/shm, so the parsed Weapon/Shell objects are readable live; their layout is solved against disc ground truth (zero contradictions over 100+ records). All 126 weapons, exact numbers, no story progress needed — 4 393 values the disc does not carry. Supersedes the letter-bucket limit of the DATA SHEET route, which now serves as the independent cross-check |
| Unit (craft/vessel) fields defaulted on disc | ✅/🟡 | runtime struct | The parsed unit\UN_*.tbl definition object, vtable 0x820af844, ≥0x380 bytes, one per unit — discovered, not assumed (unit_discover.py), and distinguished from the spawned-entity class 0x820af030 by being one-per-ID and byte-constant across snapshots. 22 fields ✅; the Maneuver block is schema declaration order, 4 bytes/field, base 0x9c with a two-slot gap after AA_Roll_Min (29 anchors, 0 conflicts), which also pins 5 fields no disc record ever values. Angles are radians at runtime, degrees on disc. Unlike weapons, unit definitions are instantiated per stage, so coverage (18/110) grows by visiting missions — values |
UI screen layout (.rat) |
✅/🟡 | ui-rat-layout | 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 |
Runtime / dynamic-capture technique
| Technique | Conf. | Spec | Notes |
|---|---|---|---|
| Live guest-memory read | ✅ | tools/re-capture/gmem.py |
Canary backs the guest address space with /dev/shm/xenia_memory_*; guest VAs map in through Xenia's fixed table. Full-RAM search ~0.2 s (sparse, SEEK_DATA). No debugger, no emulator patch, game keeps running |
| IDXD object layout solver | ✅ | tools/re-capture/weapon_runtime.py |
Scan RAM for a class's vtable → enumerate its objects → brute-force (field, offset, encoding) against the disc records. Accepts a binding only on zero contradictions. Generalizes to any IDXD-backed definition |
Functions / code paths
None documented yet — populated during the dynamic-RE phase.
| Function | Conf. | Reimpl. | Summary |
|---|---|---|---|
| — | — | — | — |