Commit Graph
4 Commits
Author SHA1 Message Date
andy c36572f8dc Extract the track thumbnails and the ball sprite bank
- Track files: decode the selector thumbnails (a 640x64 16-colour
  picture, four sequential bitplanes, six 123x32 tiles in a 3x2 grid) into
  tracks/<name>/thumb.png, and show them in the menu at double height
  (they are Amiga hi-res)
- gfx/ball.spr: decode the 64-frame attached-sprite bank (spinning ball
  with the Acid logo) into gfx/ball.png; its colours are not in the file
- Command-line output no longer panics when piped into e.g. head
2026-10-19 20:43:34 +00:00
andy 9d82d99c15 Add the contents of disk 1
- LHA -lh5/-lh6/-lh7 decoding with CRC checks (disk 1 is mostly lh5)
- Real track palettes and set names, read from each track file's header
- Camaro, plus the caravan as a towable trailer (Caravans option)
- Drivers' names, menu pictures and the original .set values per car
- Original sound effects (IFF 8SVX) through a new sample mixer: engine
  pitched with revs, tyre screech, crashes, backfire, horn, start beeps
- The original tune (OctaMED MMD1) through a new player; loudness tracks
  OpenMPT's render through the whole song. Music option in the menu
- Title picture (IFF ILBM) at the top of the menu
- skids unpack and skids music commands
- Gate crossings now judged on each car's whole movement per frame,
  including collision knocks; stalled computer cars are put back on the
  line after 8 seconds

The executable's game logic (handling, AI) is still not decoded.
2026-10-19 20:24:33 +00:00
andy 15ba71587c Convert the game data into editable assets
assets/ now holds every track as a 16-colour indexed PNG (its palette is
the track palette) plus a text file of lap gates and height map, and
every vehicle as a PNG sprite sheet plus a text file with its name and
handling (moved out of the code). The build embeds assets/ instead of
unpacking the ADFs, so the disks are no longer needed to build either.

skids extract converts original disks to assets and checks each file
reads back identically; benchmark results from the assets match the
disks exactly. Assets win over disk data with the same name, and
--data assets picks up edits without a rebuild. assets/README.md
describes how to edit everything.
2026-10-19 19:38:08 +00:00
andy f88ba23282 Add Rust revival engine for Super Skidmarks
Cross-platform (Windows/macOS/Linux) engine that plays the original
Amiga data straight from the ADF images:

- ADF (OFS/FFS), LHA and CrunchMania (CrM!/CrM2) readers
- Track decoding: 24 tracks of 1024x512 16-colour planar art, height
  maps and lap gates on an isometric ground plane
- Vehicle decoding: 8 cars, 32 headings x 25 tilt frames of 64x32
  AGA sprites
- Reconstructed handling, AI, race rules, menus and synthesised sound
  (disk 1 with the executable, palettes and audio is not in the set)
- info/extract/bench/trace/render tools, format notes, CI builds
2026-10-19 18:31:17 +00:00