A game should be able to steer a lane of a song, the filter of the
pads in a fight, the pan of a track when the player turns, and later
hand it back to the curve the composer drew. Set song lane holds a
lane of a track at a value, Release song lane glides it back.
- Set song lane takes playback, track ("Song / Track"), lane, value,
fade and quantize (Next bar by default). lane is volume, pan or a
parameter name, with or without "param:".
- From where the lane stands it goes over fade to value and stays.
The value is clamped to the lane's range. It replaces the lane and
is not mixed with it (decision 10).
- Release song lane glides over fade back to the curve, to where the
curve stands at the end of the fade. Then the lane follows the
curve again.
- The override sits in the Scheduler, where the lane marks are made.
Volume, pan and parameters go one way. The maths is pure functions
in the new module laneHolds.ts.
- Notes that start during a parameter hold get the held value. A
Switch song to the same song keeps the holds.
- The holds are a list per lane. The running one holds until the next
one lands. A key held down fires the node on every beat, and with a
single hold per lane the new call replaced the running one before it
landed, so the lane fell back to the curve. e2e 65 found this.
- A track without that lane and a baked song write a line to the log
(with a hint at "live tracks").
- The test harness knows the keys l and r.
Tests:
- Unit: 24 new (lane-holds 14, song-play 5, sound-library 2, node
catalog 3), affected groups 748/748.
- Counter-probes: 12 bends, all red.
- e2e 65 on atx: ALL PASSED, 76 checks. New 65k5: the hold landed on
the bar line, curve until 0.02 s before, -40 dB 0.14 s after, no
values between. It stood 1.8 s. The release began at -39.8 dB and
followed the curve again from 0.55 s on. With one hold per lane
65k5 is red.
- Gate on atx: CHECK EXIT 0, 335 files, 5176 tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5
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