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re: ui layout generalizes — the title main menu rebuilds too

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Second screen, independent of the pause work: GP_TITLE.pak's ptbtn01..05.rat give
X=542 for all five items and Y=162/242/322/402/482, an 80px pitch where the pause
menu used 70. Measured against the main-menu screenshot the sprite tops sit at a
constant +46px for all five, which is exactly the 45px of Xenia window chrome plus
one — so the record's Y is the sprite's top edge in the guest framebuffer, to the
pixel, on a screen the format was not derived from.

GP_TITLE also splits by sub-screen the way the pause pak splits by context:
ptbtn00 (PRESS A BUTTON), ptbtn01..05 (main menu), ptbtn11..13 (EXTRAS submenu),
pgloading_* (loading screen).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Claude (auto-RE)
2026-07-28 19:44:29 +00:00
parent 9a86a09f8d
commit e3f3d55d29
3 changed files with 18 additions and 1 deletions
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docs/re/structures/ui-rat-layout.md
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@@ -136,6 +136,23 @@ game, twice, in that order — the records were never fitted to the picture.
> proves nothing. The in-mission coordinates remain **unverified**: confirming them needs a
> screenshot of a pause during an actual mission.
## It generalizes — the title screen
The same method run against `GP_TITLE.pak` reproduces the **main menu**, which is a
different screen with a different item count and a different pitch:
![main menu real vs rebuilt](captures/ui-layout/title-mainmenu-real-vs-rebuilt.png)
`ptbtn01..05.rat` give X = 542 for all five and Y = 162 / 242 / 322 / 402 / 482 — an
**80 px** pitch, where the pause menu used 70. Measured against the screenshot, the sprite
tops land at a constant **+46 px** for all five (one reads 45, a 1-px edge-detection
wobble), and 46 is exactly the 45 px of Xenia window chrome plus one. So the record's Y is
the sprite's top edge in the guest framebuffer, to the pixel, on a second screen.
`GP_TITLE.pak` also splits by sub-screen the way the pause pak splits by context:
`ptbtn00` alone (the `PRESS Ⓐ BUTTON` prompt), `ptbtn01..05` (main menu), `ptbtn11..13`
(the EXTRAS submenu), plus `pgloading_*` for the loading screen.
## Two traps this caught
Both were mistakes made during this analysis, caught by comparing against the real game —