Audio: run-speed footfall silence is AUTHORED -- the interior fade curve (task #50)

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The 'footsteps disappear when running' report traced to the authored interior-
footfall volume chain: an AudioScalarScale on LocalVelocity with the INVERTED
curve aB=[0,20] -> cB=[1,0] (through a smoother) drives the FootFallInt source
volume -- full at standstill, fading with speed, ZERO at >=20 (run).  The
drop-gate evaluation (CalculateSourceVolumeScale -> ExecuteWatchers) pulls this
authored value and overrides the game-side mixer feed, so run-speed footfalls
are dropped BY DESIGN: at running speed the pod cockpit is engine roar; the
1995 sound design fades the interior footfall out.  Timeline evidence:
volset(1,1 from the mixer) -> matchfire Start -> volset(0 from the authored
chain during drop evaluation) -> DROP, exactly once per stride at speed >= 20.

No code change -- this commit records the finding.  User-verified state:
chirp gone, per-step static gone (velocity smoothing), footfalls audible at
walk, authentically absent at run.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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This commit is contained in:

arcattack

2026-07-16 09:12:56 -05:00

co-authored by Claude Opus 4.8

parent c68307ad53

commit 15d4278b6f

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