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P4.4: selection highlight + score/moves HUD (sx, iOS sim)

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Tap a gem to select it: BoardView hit-tests the touch to a grid cell and
draws a bright rim + translucent fill over it; tapping the same cell clears
the selection, tapping another moves it, tapping off-board clears it.
Selection only — no swap (that's P5). The HUD renders the live score and
remaining moves (out of the move limit) in the Lato font on a translucent
card above the grid.

The touch→cell geometry is factored into a pure BoardLayout (no GL/stb
imports) that BoardView composes and P5 will reuse for swap endpoints.
tests/hit_test.sx locks point_to_cell as the exact inverse of cell_frame
(every cell center round-trips; off-board taps reject) — headless because
BoardLayout pulls no C imports. goldens/p4_hud.png captures the scene after
a real idb tap at (201,437)pt: the HUD plus a yellow selection rim on the
red gem at cell (col 4, row 3).
This commit is contained in:
swipelab
2026-06-05 00:00:48 +03:00
parent 3cd1ef1585
commit 9ed98c73d2
7 changed files with 237 additions and 25 deletions
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tests/expected/hit_test.exit Normal file
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grid origin (100,0) cell 75
ok: 64/64 cell centers round-trip
corner maps to (3,5)
ok: 0 off-board taps resolved to a cell
ok: hit-test mapping is the inverse of the layout