9ecef5208e
What I wanted from it: `ui_layout::rest()`. At 8b6dbcf a trailing run of identical keyframes was always treated as the exit, so an element with no exit animation rested at its invisible pre-roll -- `ptframe1`/`ptframe2`, the main menu's circuit bracket, which a capture of the running game plainly shows. Pinned at 5414db3 rather than 4bc9706 where the fix was written, because 5414db3 is where it carries its disc-wide check: 30 of 13 991 elements move, 4 become visible, 0 become invisible. The rule shipped is the RE agent's, not the condition this port proposed -- mine was too loose and would have erased the word PAUSE on `pgptitle.rat`, whose trailing run is two identical TRANSPARENT frames. A trailing run is the hold exactly when it is VISIBLE. The re-export shows the change was contained: two files differ, and within them exactly four `rest` blocks -- ptframe1/ptframe2 on both main menus, t=16 alpha 0x00 at the pre-roll position becoming t=62 alpha 0xff at the arrived one. Every diff line pairs. The other ten screens are byte-identical, no sprite changed, and `pteff02` correctly did not move.
Sylpheed Godot
A clean-room Godot 4 port of Project Sylpheed: Arc of Deception, starting with the menu shell: developer splash → intro video → title → main menu → submenus.
You need your own copy of the game. Nothing in this repository is game content. An offline exporter reads the disc you supply and writes an open, moddable asset tree; the Godot project reads only that tree and never touches a disc format.
your disc ──▶ crates/sylpheed-export ──▶ export/ ──▶ port/ (Godot 4)
(Rust; decoders come from JSON + PNG reads ONLY
sylpheed-formats) + OGG + OGV open formats
Why the wall
Two reasons, and the second is the interesting one:
- Godot cannot read IPFB archives, RATC bundles, T8aD textures, XMA banks or WMV video, and it should not learn to.
- Modding is a goal of this port. If the runtime reads the original formats, modding means reverse engineering. If it reads JSON and PNG, modding means opening a file.
Where the knowledge comes from
The decoders live in sylpheed-formats, pinned by revision — a
separate project, where the reverse engineering happens. Its
docs/port/HANDOFF.md is the contract: what has been decoded, what was measured
off the running game, and what is known to be undecodable. Read it before
assuming a value is on the disc.
Layout
crates/sylpheed-export/ |
disc → open formats. Regenerates export/ wholesale |
port/ |
the Godot 4 project |
authored/ |
decisions that are not on the disc, each with its reason |
export/ |
generated, gitignored, never hand-edited |
tools/ |
verification harnesses that hold the port to the reference renderer |
docs/ |
the mission, the format spec, the agent's loop prompt |
Verifying
sylpheed-cli screen render -- built from the same sylpheed-formats revision
the exporter is pinned to -- is the reference renderer. tools/verify-screen
draws every exported screen both ways and reports the largest per-channel
difference in the frame:
tools/verify-screen # every screen in the manifest
tools/verify-screen main_menu # one of them
Where the two disagree, one of them is wrong; docs/DECISIONS.md says which and
why, rather than tuning the port until the number goes down.
Status
P1. The exporter writes GP_TITLE's twelve screen builds and their sprites,
and the Godot project draws any of them statically at 1280x720 from that tree
alone. main_menu matches the reference renderer to within 3/255 on every
channel of every pixel. Next: P2, keyframe animation.