10f469cbed
Closes the gap the port named: it ran my proposal against captures 3/3 in favour, but tested ITS OWN settled pose rather than UiBuild::settle_time(). Geometry established first, because my first attempt got it wrong: a 1280x720 render meets a 1279x675 capture by CROP, not scale -- crop rows 0..675 gives RMSE 14.07 against 68.89 resized and 79.61 for the 45-row crop. The 45-row offset holds for a full display frame; these captures are already the game surface. Gamma fitted per pose so neither candidate can win on the fit: title settle g=0.84 RMSE 8.17 15.28 % >8 title rest g=1.04 RMSE 20.92 70.84 % >8 The two splashes DO NOT ADJUDICATE and are not counted: their gamma fit rails at the edge of the search range, still railing when widened to 0.30..3.00, so the photometric model is wrong for them -- and with gamma railed their margins collapse to 1.16x and 1.06x. title adjudicates at an interior gamma and does so decisively, 4.6x on differing area and 2.6x on RMSE. So the IMPLEMENTATION and not merely the direction is supported. Absolute agreement is poor -- the port's settled title row is 0.21 % where mine is 15.28 % -- so the ordering is what this table carries, not the values. The port's three-screen result remains the stronger evidence. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
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.