Trimming the stage alone does nothing, and that is worth writing down: the
scale is snapped, so at 3x the game is 1512 device pixels wide whether the
stage is 560 or 512. Shrinking the surround only pays when it crosses a step.
So both halves land together.
── the stage ──
560x400 down to 512x352, which is expert (504x342, measured) plus four pixels
a side. There is nothing left to give — intermediate is 342 tall too, so
anything shorter clips a board people actually play.
── half steps from 2x ──
Not a retreat from whole-number scaling. The unit that has to stay regular is
the CELL, not the pixel: this is a 16px grid, so at 3.5x a cell is exactly 56
screen pixels — as even as 3x or 4x — and only sub-cell pixels alternate
between three and four. Below 2x that alternation is a third of a pixel rather
than a seventh, so whole numbers still apply there. The case that started all
this, a fractional devicePixelRatio at nominal 1:1, put the CELL boundaries at
26.4px, which is a different thing entirely.
Together, on a 1800x1400 device-pixel panel: 3.0x becomes 3.5x, and the game
goes from 1512 to 1764 device pixels wide.
Known cost, and it is in the README: the Extras > Auto Options dialog is 328
wide and opens 25px right of the game, so it needs a 554-wide stage to fit
whole from beginner. It cannot be closed from the panel anyway — no window
manager, no title bar, no OK button — so that is the thing to fix before this
number is revisited.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Officer-Session: de3ed4e6-f88a-429c-94e6-a760336ba83b
pastilhasandClaude Opus 5
e4247cd760