Patterns could only be heard one at a time, in their own tab or from
a behavior. A song lays patterns and sounds out on tracks along one
time axis and plays them through the scheduler of #332, the third
piece of the music tools of #330.
- New asset type song under the heading Songs, with four empty tracks,
120 BPM in 4/4 and a grid of a bar. Tempo, meter and grid are rows
in the inspector. Tracks, items and the loop are the asset's data,
held to their rules on load and in every command.
- A track has a name, volume, pan, mute and solo. Each is heard on a
bus of its own, so a change reaches what is sounding at once.
- A pattern item repeats its pattern for as long as it is, with a
transpose and another instrument if wanted. A sound item plays its
sound as a clip at its own speed, round and round, through a sound
FX if wanted. Both have a volume on top of their track's.
- Cut back at the left end or split, an item starts as far into what
it plays as the cut is: ticks into a pattern, seconds into a sound.
- The tab shows the heads with M, S, volume and pan, the ruler of the
Pattern tab and the items, a pattern with its notes, a sound with
its waveform, a missing asset red. Patterns and sounds are dragged
in from the Assets panel. Body, right and left end move, lengthen
and cut back, Alt leaves the grid. Ctrl+C/V/D/A, Ctrl+E splits
where playing starts, Delete, arrows. A double-click opens a
pattern item in its tab.
- What is picked is a new selection of its own, so the inspector
shows the item or the track, with a button to delete it.
- The scheduler plans clips beside notes. Where the playhead starts
or jumps back inside a clip, it is taken up that far into its
sound. A clip fades out at the end of its item or of the loop.
- The editor plays one piece at a time: a pattern started stops the
song and the other way round.
- The rules are pure functions in core/music/song, editor/song/
songView and songEdit.
Findings:
- The suites of 4ea752f and 2a3b90b were red at e2e 54: the Pattern
pushed Struct below the fold of the + menu. The module now scrolls
to it, as e2e 47 does for Vector art. It also left the menu open,
which made e2e 55 fail behind it.
- The Assets panel only dragged assets a scene can place. Patterns
and sounds are dragged now as well, and a scene says why it does
not take one instead of calling every asset a scene.
Tests:
- song.test.ts (new, 14) and song-edit.test.ts (new, 9): model,
round trip, sequence of patterns and clips, mute and solo, cuts,
clips on the scheduler, moving, sizing, trimming, splitting,
duplicating, hits, head parts. sound-library.test.ts +5: clip
offset, end fade, pitched clip, track bus, peaks.
- e2e 65 (new) on melektaus-atx: ALL PASSED, 18 checks. e2e 54 and
55 with the fix: ALL PASSED, 33 checks. e2e 4 with 30 asset
types: ALL PASSED, 62 checks.
- Gate on melektaus-atx: CHECK EXIT 0, 250 test files, 3884 tests.
- Counter-checks: no taking up of a clip, no pattern offset, no clip
end each fail 3, 1 and 1 tests.
- Probe on stein2: the tab with four tracks, before and while
playing, looked at in two screenshots.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5
8f9c250eb6