Files
Syplheed-Reborn/tools/re-capture/README.md
Claude (auto-RE) 1ee2d5e406 re: widen unit coverage to all six tutorials, and prove the fields are run-invariant
Captures the five remaining tutorials (grab_tutorial.sh, one cold boot each)
and re-solves over seven snapshots from seven separate emulator runs. Coverage
18 -> 21 units, confirmed fields 22 -> 27 (Size_Y, MassScore, MinimumVelocity,
AV_PitchPlus_Min, AV_PitchMinus_Min join the zero-contradiction set).

The multi-run union exposed something the single-run check could not: the same
unit's object is NOT byte-identical between runs. unit_runtime.py --crosscheck
pins down why -- exactly 15 words differ, 13 of them holding guest heap
pointers, and none of them is a solved or interpolated field offset. So every
value reported is run-invariant, which is a stronger statement than the
within-run identity check that came before it.

The two non-pointer stragglers are a real caveat, now documented rather than
smoothed over: +0x2c8 reads 8000.0 for UN_f001_TCAF_DeltaSaber_T_Ttrl in two
tutorials and 10000.0 in a third, with a 0/1 flag at +0x2d0. A couple of words
in the object are set per stage, so it is mostly but not entirely the parsed
table. Unidentified, marked NEEDS-HUMAN.

Coverage honesty: all six tutorials together add only 3 units the missions do
not already have -- they reuse one training box, one drone and the player
craft. Further coverage needs story progress, not more tutorials.

Two navigation facts encoded in grab_tutorial.sh, both learned by breaking
them: the main menu is not input-ready for ~10 s after the title tap and early
d-pad presses are dropped (which sends the A to NEW GAME); and NEW GAME is not
a shortcut to Stage 01 -- it gates on DIFFICULTY then plays the prologue. A
NEW GAME excursion to the READY ROOM leaves game01/savedata byte-identical,
verified by diff against a backup.
2026-07-29 18:22:47 +00:00

2.9 KiB

Runtime-capture harness (sylph-re container)

Screenshot-driven scripts for reading the running retail game's menus under Xenia Canary + lavapipe, headless. They assume the container helpers screenshot, vgamepad, pad are on $PATH and HOME=/sylph-home/re.

Script What it does
skip_intro.sh Boot → main menu, unattended. Taps A only while the intro movie is actually playing (frame-to-frame RMSE), then once at the PRESS Ⓐ BUTTON title. Static logo screens are left alone, so a stray tap can never land on NEW GAME.
wait_title.sh Older variant: wait for the title (green Ⓐ glyph at px 625,618) and tap A. Superseded by skip_intro.sh.
step.sh One Arsenal navigation step (down/up/next/prev/none) + a compact capture: weapon list stacked over the DATA SHEET.
sweep.sh Walk a whole weapon-type list, capturing only rows that show a DATA SHEET — locked rows (a "Conditions to Develop" panel) are detected by the brightness of the Range Class label box and skipped.
type.sh Change weapon-type tab N times (RB) and report the header strip.
hp.sh / cyc.sh Hangar hard-point carousel: cyc.sh steps it (d-pad down, not left/right) and captures the Name + DATA SHEET.

Input timing under lavapipe: the game polls input at its own low frame rate, so a 60 ms d-pad tap is dropped roughly half the time. 200 ms is reliable; 300 ms starts to auto-repeat (two rows per press).

Findings produced with these: docs/re/weapon-datasheet-runtime.md.

Guest-memory tools (no screenshots)

Script What it does
gmem.py Read the live guest address space out of /dev/shm/xenia_memory_* (Xenia's backing file), addressed by guest VA. find / read / words.
weapon_runtime.py Solve the Weapon/Shell struct layouts against the disc records and read the fields the disc defaults.
unit_discover.py Find which runtime class carries a set of ID strings, assuming no vtable: tallies the word at pointer_site - k across distinct IDs.
unit_runtime.py Same solver for the unit\UN_*.tbl definition objects (vtable 0x820af844). Unions several snapshots — unit definitions are per-stage.
schema_order.py Merge a sub-record's field-declaration order across all tables (topological sort); the layout check that pins fields no table ever values.
order_check.py Test offset = base + 4*index for one table's sub-record against solver output.
grab_tutorial.sh Cold-boot Canary, walk to the Nth TUTORIAL entry, wait for the stage load, snapshot guest RAM. One emulator per capture — backing out of a loaded mission wedges it.

Snapshot first — cp --sparse=always /dev/shm/xenia_memory_* snap.bin (~2 s) — and point $GMEM_FILE at the copy; the running emulator pegs every core under lavapipe.