8ebbfc70c1
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
79 lines
2.8 KiB
Python
Executable File
79 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Locate the menu focus ring by MEASUREMENT, in whatever frame you have.
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🔴 Why this exists. `menu_focus.py`'s row centres [166,241,315,390,465] are
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DESIGN-SPACE rows read off `screenshot` output. Feeding it an ffmpeg x11grab
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frame of the whole X display silently reads the wrong rows: the frame carries
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Xenia's title bar and menu bar, and the game surface is scaled. On 2026-08-30 a
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probe announced "on EXTRAS", pressed Ⓐ, and opened OPTIONS -- two items out.
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⚠️ AND THE CONTROL COULD NOT CATCH IT. "Two DOWNs must move the cursor two
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items" tests RELATIVE motion, which a constant offset preserves exactly. It
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passed on a reader that was two items wrong. So this returns the ring's measured
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ROW, and callers compare rows; naming an item needs a calibration, below.
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Measured on the x11grab frames of 2026-08-30:
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spacing 79.25 px per item (design spacing 74.75 -> surface scaled 1.060)
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capture_y = 49.5 + 1.060 * design_y
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Checks: design 241 -> 305 predicted vs 304.75 measured; 315 -> 383.4 vs 384.0.
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ring_row.py FRAME.png [FRAME.png ...]
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"""
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import sys
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import numpy as np
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from PIL import Image
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GUTTER = (500, 542)
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DECOR_ROWS = 50 # window title bar + menu bar live above this
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FOOTER_Y = 620 # the button-legend strip is bright in the gutter too
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NAMES = ["NEW GAME", "LOAD GAME", "TUTORIAL", "OPTIONS", "EXTRAS"]
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ROW0, SPACING = 225.5, 79.25 # measured, main menu, x11grab
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def ring_row(img):
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"""The ring's y centre in THIS frame's own pixels, or None."""
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g = np.asarray(img.convert("L"), dtype=float)
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col = g[:, GUTTER[0]:GUTTER[1]].max(axis=1)
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col[:DECOR_ROWS] = 0
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ys = np.nonzero(col > 150)[0]
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if len(ys) == 0:
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return None
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groups, cur = [], [int(ys[0])]
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for y in ys[1:]:
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if y - cur[-1] <= 4:
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cur.append(int(y))
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else:
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groups.append(cur)
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cur = [int(y)]
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groups.append(cur)
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groups = [g_ for g_ in groups if len(g_) >= 5 and g_[0] < FOOTER_Y]
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if not groups:
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return None
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b = max(groups, key=len)
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return (b[0] + b[-1]) / 2
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def main_menu_item(y):
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"""Item index on the MAIN MENU, from the measured calibration.
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Only valid for the five-item main menu in an x11grab frame. Returns None if
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the row is not within half a step of a row centre -- refusing is the point,
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since a wrong name is what this file exists to prevent.
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"""
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if y is None:
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return None
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i = round((y - ROW0) / SPACING)
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if not (0 <= i < len(NAMES)):
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return None
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if abs(y - (ROW0 + i * SPACING)) > SPACING * 0.4:
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return None
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return i
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if __name__ == "__main__":
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for p in sys.argv[1:]:
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y = ring_row(Image.open(p))
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i = main_menu_item(y)
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nm = NAMES[i] if i is not None else "<not a main-menu row>"
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print(f"{p.split('/')[-1]:22} ring y = {y} -> {nm}")
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