e95ce49212
My sampling alternative is refuted cleanly: their captures report 150 frames spanning 1..149, indexed by guest VdSwap submissions, not wall-clock. The wall-clock revival I proposed does not survive. rotation_deg is confirmed from the running game. Their AABB check predicts, from the declared scale plus my exported angles, pteff03 400x1080 at +30 deg -> 1135.3 against 1134 observed (0.12%) and pteff03a 400x1440 at -45 deg -> 1301.1 against 1303 (0.15%). First time this session an export value of mine has been checked against the game rather than against the other decoder -- everything prior ran disc->exporter->export against disc->their-reader, which shares the source. The renderer self-check I started is abandoned. I predicted a changed band at x 949..1280 full height for leaf phase 0->30; measured 1177x70 at the top of the frame, max difference 5.29. The prediction is mine and wrong: the leaf pivot is [200,90], the source centre, but under 800% vertical scale the mapping from pos to drawn extent is not the centre-offset I assumed. My arithmetic, not a demonstrated renderer fault, and separating them costs more than the answer is worth. Stopping deliberately. They classified the leaf clock as undecodable with reach after four refuted models and noted the thread has cost both of us a lot for a quantity nothing ships on. Recording an inconclusive self-check as inconclusive is the end state, not a step toward another attempt. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF
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
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.