Rocket Knight Adventures Recomp v0.1.13

Rocket Knight Adventures Recomp v0.1.13

Windows x64 ZIP and Linux x86_64 AppImage. Bring your own Rocket Knight
Adventures (USA) ROM (CRC32 A6EFEC47); no ROM is included.

This pass fixes the last reported spot: the stage-3 lava fish boss. Its
backdrop no longer flashes in the widescreen margins, and the boss is no
longer mirrored into the left margin.

The lava room ripples its cave backdrop line by line (a heat shimmer). The
renderer took its camera from that rippling scroll, so on some frames the
room edge moved by a block and the left margin swapped between two
backgrounds. Widescreen now follows the game's own camera and carries the
shimmer into the margins with the original picture. The earlier lava-room
special cases are removed: the left margin no longer copies the native right
edge (which contained the fish once its platform broke), and the fish is
drawn once from its real artwork. The platform now ends at the room's real
edges. The machine room, whose room also starts half a block in, likewise
keeps all of its original pixels.

Recompiled coverage grew: 195 more routines that previously ran on the
interpreter fallback, validated against executed-instruction evidence from
the tester's saves, are now native code. Game behavior is unchanged: guest
RAM is byte-identical to v0.1.12 across all 54 areas and every supplied
save.

Extract the Windows ZIP and run RKARecomp.exe, or run the Linux AppImage in
a writable folder. Choose Mods > Widescreen > Adaptive (fit window) and
Expanded Spawn Range for 16:9 playtesting.

Known limitations: the castle-corridor fire emitter still wants a fresh-run
check. The machine-room margin repeats a few background details, a flying
boss can show a one-pixel propeller slice at the extreme edge, and the Earth
transition keeps its mirrored edge.