Two Birth Island visuals were broken; both are now verified on screen.
1. The meteorite never reddened as the triangle puzzle progressed.
OwSprites.recolour_sprite called Image:newImageData, which LOVE 11 does
not have, so the pcall always failed and setObjectPalette silently
returned false for all ten steps. Keep the ImageData the sheet was
decoded from in load_one and clone() it before mapPixel (which mutates
in place); the override copy keeps its imageData in step too.
2. The shatter happened, but the shards were invisible. The flash was a
whole-screen Renderer.screenVeil painted after the composite, and the
shards only live ~8 frames, so they were drawn underneath it. pret
(field_effect.c:3946) blends PALETTES_BG only -- BlendPalettes plus
BeginNormalPaletteFade -- so the OBJ shards, which share the
meteorite's palette tag 4371, keep their colours against a white map.
Replace startWhiteFlash with startBgFlash, drawn by FieldView.draw
between the last map layer and the actors. Also match pret's shake
cadence (flip every second frame) and its `++tTimer > 120` test.
Adds tests/drivers/game3_deoxys_visual.lua, which walks all eleven puzzle
positions, shatters the rock, and counts shard-coloured pixels in the
saved frames: 492 px at the shatter frame, 192 px a few frames later
(0 before this fix).
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Shane McGovern