From 33b3cdb0f53ad1faafd2d3a0e6b4cb3d594e8cfb Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Sun, 10 May 2026 03:02:24 +0500
Subject: [PATCH] engine: client: soundlib: catch broken null.wav and replace
 it with silence

---
 engine/client/soundlib/snd_wav.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/engine/client/soundlib/snd_wav.c b/engine/client/soundlib/snd_wav.c
index 676a0d43..fc3f6d59 100644
--- a/engine/client/soundlib/snd_wav.c
+++ b/engine/client/soundlib/snd_wav.c
@@ -344,6 +344,18 @@ qboolean Sound_LoadWAV( const char *name, const byte *buffer, fs_offset_t filesi
 		}
 	}
 
+	// silence known-broken WAVs that contain stray non-zero samples masquerading as silence
+	if( Q_stristr( name, "null.wav" ))
+	{
+		uint32_t crc;
+		CRC32_Init( &crc );
+		CRC32_ProcessBuffer( &crc, buffer, filesize );
+		crc = CRC32_Final( crc );
+
+		if( crc == 0x14a36f29 ) // common/null.wav (Half-Life)
+			memset( sound.wav, 0, sound.size );
+	}
+
 	return true;
 }