9b7a8b3237
menu_focus.py's row centres are design-space rows from screenshot output; my probes fed it whole-display x11grab frames carrying Xenia's chrome and a surface scaled 1.060. Caught by ground truth, not by a control: the probe announced 'on EXTRAS', pressed A, and opened OPTIONS. Measured directly with ring_row.py: initial focus on a fresh boot is NEW GAME, 2/2 fresh boots, both the first menu entry. That agrees with boot_menu.sh's own line and menu-state-in-memory.md's four-downs, and withdraws this page's 'TUTORIAL 2/2' as the outlier. Persistence stands and is now geometry-free -- 384.0 vs 385.5, 1.5 px apart. An equality test is immune to a constant offset, which is why the conclusion survived a broken reader when the published item names did not. The control was structurally blind: 'two DOWNs move two items' tests relative motion, and a constant offset preserves it exactly. EXTRAS remains unmeasured; that run navigated to OPTIONS. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
61 lines
3.3 KiB
Plaintext
61 lines
3.3 KiB
Plaintext
# The focus reader was wrong on x11grab frames -- and what that changes.
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# MEASURED 2026-08-30.
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#
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# menu_focus.py's row centres YS = [166,241,315,390,465] are DESIGN-SPACE rows,
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# derived from `screenshot` captures. My probes feed it ffmpeg x11grab frames of
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# the whole X display, which include Xenia's title bar and menu bar and show the
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# game surface SCALED. Same numbers, different coordinate system.
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#
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# CAUGHT BY GROUND TRUTH, not by a control: the probe announced "on EXTRAS",
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# pressed A, and opened OPTIONS. I looked at the frame.
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#
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# THE OFFSET, measured directly rather than assumed -- brightest gutter cluster
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# (x 500:542), excluding the y<50 window-decoration band and the footer:
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#
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# reach/1-F1.png ring y = 225.5 (first menu entry of a fresh boot)
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# reach/2-F2.png ring y = 384.0 (after 2 delivery-confirmed DOWNs)
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# reach/4-F3.png ring y = 385.5 (after B -> title -> A -> menu)
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#
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# spacing = (384.0 - 225.5) / 2 = 79.25 px per item
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# design spacing is 74.75, so the surface is scaled by 1.060 -- UP, not down
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# capture_y = 49.5 + 1.060 * design_y (checks: 241->305 vs 304.75 seen,
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# 315->383.4 vs 384.0 seen)
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#
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# ⚠️ MY FIRST CORRECTION WAS ALSO WRONG. I assumed the 1280x675-inside-1280x720
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# note meant the surface was scaled DOWN by 0.9375. Applying that gave F2 =
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# OPTIONS, i.e. three rows below F1 where only two DOWNs were delivered -- the
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# arithmetic refused it. Measuring the spacing settled it in one step.
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#
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################################################################################
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# WHAT THIS CHANGES
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#
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# ✅ INITIAL FOCUS ON A FRESH BOOT IS **NEW GAME**, not TUTORIAL.
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# F1's ring at y=225.5 is design row 166 = item 0. Two fresh boots, both the
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# FIRST menu entry of the boot, both NEW GAME (this run, and the earlier run
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# whose old-reader value of LOAD GAME is the same frame misread).
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#
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# That AGREES with boot_menu.sh's own closing line and with
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# menu-state-in-memory.md's four-downs-to-EXTRAS, which only counts from NEW
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# GAME. menu-navigation-semantics.md's "TUTORIAL, 2/2" is the outlier.
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#
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# ✅ THE PERSISTENCE FINDING STANDS, and is now confirmed WITHOUT any geometry:
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# F2 ring y = 384.0, F3 = 385.5. 1.5 px apart. The cursor is where it was
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# left. An equality test is immune to a constant offset, which is exactly why
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# that conclusion survived a broken reader.
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#
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# 🔴 BUT THE ITEM NAMES I PUBLISHED FOR IT WERE WRONG.
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# Reported: F1 TUTORIAL -> F2 EXTRAS -> F3 EXTRAS.
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# Truth: F1 NEW GAME -> F2 TUTORIAL -> F3 TUTORIAL.
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# Two positions out. The conclusion does not change; the labels do.
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#
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# 🔴 AND MY CONTROL COULD NOT HAVE CAUGHT IT. "Two DOWNs must move the cursor
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# exactly two items" tests RELATIVE motion, and a constant offset preserves
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# relative motion exactly. A control that only checks differences is blind to
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# every error in the origin. It passed on a reader that was two items out.
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#
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# ❔ THE EXTRAS QUESTION IS STILL UNANSWERED. The probe navigated to OPTIONS
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# believing it was EXTRAS, so E1/E2/E3 are the OPTIONS screen and a different
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# screen respectively (E3 glyph 1776 is the title's plate band -- A on the
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# wrong screen went somewhere else entirely). Nothing about EXTRAS was
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# measured. sylpheed-port's `initial_focus: ptbtn11` label is still undecided.
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