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Audio: FOOTSTEPS WORK -- reconstruct the lost game-side step-intensity broadcast (task #50)

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The final link: the footstep source's volume + brightness mix from two
AudioControlMixer inputs (ctl 100 walk / 101 run) behind an entity-registered
AudioControlSplitter.  The object stream only ZERO-initializes those inputs
(AudioControlSend one-shot initializers; mixer ctor inits 0.0) -- the runtime
feed was BT game code (lost with the source), using the engine's game-facing
Entity::AudioSocketIterator broadcast (the only path to those anonymous
components; the splitter registers via entity->AddAudioComponent).

Reconstruction [T3]: on each foot plant (the SetBodyAnimation locomotion-clip
pulse), broadcast the step intensity (live ground speed on the authored
0..40 -> 0..1 velocity-curve family, floored at 0.35 to clear the 0.3
transient-drop gate) on the gait-appropriate input (run-family clips
0x0a..0x0f -> 101, walk family -> 100; the other input zeroed so gait
changes don't stack).  Patch-source components (VDATA 1001/1002/1005) are
skipped -- AudioSource::ReceiveControl Fail()s on input-range ids.

VERIFIED: FootFallInt01.wav (bank2 patch39) delivers + plays per stride;
mixer sums nonzero (vol=1 at run speed); 30s drive+fire regression clean --
weapon charge/fire/sustain cycles, ready dings, buttons, engine loops, state
audio (0 skips), gait advancing normally, no crashes, no stuck loops.

Also this session: [seqcfg] sequence config dump (decoded the authored event
streams: ctl 8=note/6=attack-vol/1=start/2=stop patterns), BT_AUDIO_NODROP
diagnostic (force low-volume transient delivery at a 0.7 floor).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
arcattack
2026-07-16 07:47:48 -05:00
co-authored by Claude Opus 4.8
parent f4b2a7f87f
commit 90f99fe4b5
3 changed files with 62 additions and 1 deletions
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engine/MUNGA/AUDREND.cpp
+12
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@@ -208,6 +208,18 @@ void
// Then return
//--------------------------------------------------------------------------
//
// DIAG (BT_AUDIO_NODROP): deliver low-volume transient starts anyway (at a
// floor volume) to isolate volume-feed problems from the rest of the chain.
if (getenv("BT_AUDIO_NODROP") &&
message->controlID == StartAudioControlID &&
audio_source->GetAudioRenderType() == TransientAudioRenderType &&
audio_source_volume_scale < LowAudioVolumeThreshold)
{
DEBUG_STREAM << "[spatial] NODROP forcing start src=" << (void*)audio_source
<< " vol=" << audio_source_volume_scale << "\n" << std::flush;
audio_source->ReceiveControl(VolumeAudioControlID, 0.7f);
audio_source_volume_scale = 0.7f;
}
if (
message->controlID == StartAudioControlID &&
audio_source->GetAudioRenderType() == TransientAudioRenderType &&