From b7757a554847fcb37d84084d975ad645e7a41458 Mon Sep 17 00:00:00 2001
From: Steven Wroblewski <sw@steven-wroblewski.de>
Date: Sun, 10 May 2026 21:53:51 +0200
Subject: [PATCH] fix(sfx): duplicate OGG stream before setting loop to avoid
 shared resource mutation

---
 scripts/objects/ultrasound_machine.gd | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/scripts/objects/ultrasound_machine.gd b/scripts/objects/ultrasound_machine.gd
index 8ab9a0c..177fd35 100644
--- a/scripts/objects/ultrasound_machine.gd
+++ b/scripts/objects/ultrasound_machine.gd
@@ -33,11 +33,15 @@ func _setup_audio() -> void:
 		return
 	if not ResourceLoader.exists(_HEARTBEAT_PATH):
 		return
-	var stream: AudioStreamOggVorbis = load(_HEARTBEAT_PATH) as AudioStreamOggVorbis
-	if stream == null:
+	var base: AudioStream = load(_HEARTBEAT_PATH) as AudioStream
+	if base == null:
 		return
-	stream.loop = true
-	_audio.stream = stream
+	var ogg: AudioStreamOggVorbis = base as AudioStreamOggVorbis
+	if ogg == null:
+		return
+	ogg = ogg.duplicate() as AudioStreamOggVorbis
+	ogg.loop = true
+	_audio.stream = ogg
 
 
 func _on_room_changed(floor_index: int, room_index: int) -> void: