4d533185e7
F6 is a clock question, not an effect question: the human confirms the light animation itself looks like the game's and only starts earlier, and separately that the port may be running it faster (flagged by them as an impression). The port passed time_units straight to the leaf, which is an assumption -- offset 0, rate 1 -- that nobody measured and that the Decoder's capture contradicts: the game's leaf t=0 is its first drawn frame, 40 frames after the title's first element, at a rate measuring well below the title's. ScreenView.leaf_clock(screen_units) applies an origin and a rate; both default to -1.0 meaning unmeasured, in which case it is the identity and behaviour is unchanged. Fed from authored/rendering.json leaf_clock per screen, currently null with the provenance recorded. No placeholder values, per F1: an invented constant here is indistinguishable from a measured one later. Verified inert: title rendered at t=2/3/4 s, 0 differing pixels against captures taken before the change. Also corrected in the process: my earlier 'the sweep enters the viewport at t=61' used the UNROTATED sprite width. The leaf carries a 30 deg rest rotation, so its AABB is 886 px against a 399 px sprite -- matching the Decoder's measured ~890 to within 4 px. Port and game both put the quad on screen at leaf t~0, so the whole discrepancy is the leaf clock's origin and rate.
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.