# Coin pickup HUD and sound correlation — 2026-10-22

A muted 3,700-frame isolated castle replay on the current native build reached
the original stair ledge and collected two yellow coins through normal player
movement. At runtime frame 3253, coin UIDs 88 and 89 changed into the collected
state and the native audio trace recorded two starts for the coin pickup cue
(archive 3, effect 17). Both cues completed naturally at audio tick 2321, 31
audio ticks after starting at tick 2290. The run ended with zero mixer errors.
The output-device gate was muted and submitted zero nonzero samples; PCM capture
was generated, so this verifies cue triggering and finite completion, not
whether the sound is subjectively accurate when heard.

At runtime frame 3253 the HUD still showed 0 coins; at frame 3260 it showed 2.
Screenshots `coin-3250.bmp` and `coin-3260.bmp` show the before/after state.
The isolated slot save and its backup both retained SHA256
`7C81CE82DBCE712CCCA599357BF7838E5D261B7F54359BE40A1DB64D01902E60`.
The replay exited with code 0. Diagnostic log, CSV traces, PCM and screenshots
remain local in `work/native-coin-audio-hud-rtframe-20261022`.

This closes the actual coin-contact/HUD/sound-start-and-completion check. It
does not verify audible sound quality or other coin types, and it is not player
acceptance. Continue muted testing with isolated saves. The port remains
experimental and incomplete.
