531c2d0ca4
Issue #1's premise (the human's play-test: a held direction repeats) directly contradicted menu-navigation-semantics.md's 2026-08-30 "no auto-repeat" row. Read the instrument before trusting either: nav_repeat_and_b.py drove input through Canary's --hid=file driver, and that driver's GetKeystroke() is explicitly, deliberately built to deliver exactly one event per held press ("scripted input wants precisely one event per press, and repeat is what makes menu steps overshoot" -- file_input_driver.h's own comment). input-pad-read-path.md already established the game reads menu input via this same Keystroke API. A driver engineered to prevent repeat cannot be evidence the game lacks it -- the counter's control (a tap gives 1 spike) proved the counter works, not that the driver could show more than one. Not a clean reversal, and said so: the same driver's GetState() holds a button continuously with no edge suppression, and pad.py's own docstring -- written by an earlier session driving this exact tool -- warns that a longer dpad hold "auto-repeats and overshoots," describing an observed effect through this same driver. The two pieces of evidence disagree and this page does not resolve which wins. Also read from Canary's source: the SDL input driver (what a real controller goes through) auto-repeats keystrokes at 400 ms initial delay then 100 ms interval, guest time (HID_SDL_REPEAT_DELAY/RATE, upstream Xenia, not a project change) -- a concrete, testable prediction for what the real number could be if the menu treats repeat-flagged keystrokes as nav steps, matching the human's "medium pace" description. Not yet measured. Refutation attempt this iteration, recorded per adversarial duty: targeted the 2026-08-30 "no auto-repeat, ✅ measured" claim. Survives only partially -- demoted to unsettled, not flipped to a confident opposite. New REFUTED.md section (Menu navigation and input) and the row in menu-navigation-semantics.md both corrected in place, old text kept per convention. What would close it: trace C_PAD_RINGBUF's producer (keystroke ring vs polled state) statically, or add an opt-in repeat mode to the file driver and read cursor position off the draw log per frame. Neither run this iteration -- this is the static half, and reversing a standing claim is enough for one unit without stacking a build-and-boot run on top of it unverified.
Sylpheed
A clean-room reverse engineering and port project for Project Sylpheed: Arc of Deception (Xbox 360, 2007).
Three things live here, in one repository so that a change spanning them lands as one commit:
| The decoders | crates/sylpheed-formats — the disc's formats, read and verified disc-wide |
| The port | port/ — a Godot 4 project, plus crates/sylpheed-export which converts a disc into the open asset tree it reads |
| The corpus | docs/re/ — what has been reverse engineered, with its evidence, its retractions and its dead ends |
You need your own copy of the game. No game content is in this repository and none ever will be. The exporter reads the disc you supply.
The oracle is the real game
sylpheed-cliand the Explorer are tools for verifying our decoding. They are hypotheses under test and they have been wrong. When something must be checked against the truth, the truth is the game running in Xenia Canary, captured — not any renderer of ours.
This is stated first because getting it backwards is the most expensive mistake this project has made.
Layout
crates/
sylpheed-formats/ the decoders. Disc-wide verified; the corpus is its spec
sylpheed-cli/ headless tools -- render a screen, dump a table, probe audio
sylpheed-viewer/ the Explorer: a human's window onto the disc. STATIC data only
sylpheed-export/ disc -> the open, moddable asset tree
port/ the Godot 4 project. Reads open formats ONLY
authored/ decisions that are NOT on the disc, each with its reason
data/
base/ generated by the exporter. Gitignored, never hand-edited
mods/ drop-in overrides. Yours
docs/
re/ the corpus: findings, refutations, method traps
game/ how the game is navigated -- menus, modals, flight
port/ the port's mission, its handoff contract, modding rules
-- and RUNNING.md, which is how you actually start it
agents/ how the agent team works together
tools/ capture harnesses, probes, the share tool
exchange/ transient inter-agent files. NOT in git
docker/ the agent containers
Where to start
docs/re/INDEX.md— what is decodeddocs/re/REFUTED.md— what has been tested and dieddocs/re/METHOD.md— traps this project has already paid fordocs/game/navigation.md— how the game is navigateddocs/port/MODDING.md— why the asset tree looks the way it does
Xenia Canary is a separate repository: it is a fork tracking upstream, and it carries our instrumentation.
Conventions
Confidence is per claim, never per document: ✅ CONFIRMED · 🟡 PROBABLE ·
❔ HYPOTHESIS · ❌ REFUTED. A withdrawn result is kept with its reasoning
rather than deleted — that is why the numbers here can be trusted.