Claude 48832ccb13

language: pleasant asset syntax for palettes, CHR, bg, sfx, music ...

Adds six NES-friendly authoring shortcuts so programs don't have to
hand-pack hex bytes for every kind of art asset. Every new syntax is
strictly additive — existing examples keep their byte-identical ROMs
and goldens.

  * palette: ~50 named NES colours (`black`, `sky_blue`, `dk_red`, …)
    usable anywhere a colour byte is expected, plus a grouped-form
    `bg0..sp3` + `universal:` shape that auto-fills every sub-
    palette's first byte (fixing the `$3F10` mirror trap).
  * sprite: `pixels:` ASCII-art alternative to 16-byte CHR, supporting
    multi-tile sprites split in row-major reading order.
  * sfx: scalar `pitch:` matching the v1 driver's latch-once behaviour,
    plus `envelope:` as a friendlier alias for `volume:`.
  * music: `tempo:` default duration + note-name notes (`C4, Eb4,
    rest 10`) alongside the existing `pitch, duration` pair form.
  * background: `legend { '.': 0, '#': 1 }` + `map:` string rows,
    plus `palette_map:` grids that auto-pack the 64-byte attribute
    table from 16×15 sub-palette digits.

A new `examples/friendly_assets.ne` exercises every shortcut at once
with a matching pixel + audio golden; the other 22 golden tests still
match byte-for-byte.

https://claude.ai/code/session_01PzaSFj3VahDzxEYTKCESkz

2026-04-13 16:09:53 +00:00

38 KiB

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