From d30517d6f3442ecd61644780471029996624b0a1 Mon Sep 17 00:00:00 2001
From: Carsten Teibes <dev@f4ke.de>
Date: Sun, 22 Oct 2017 18:35:00 +0200
Subject: [PATCH] Do manual looping with Modplug This is not gapless, but still
 better than silence, when the Modplug library has not been patched.

Closes #32.
---
 src/io/sound.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/io/sound.cpp b/src/io/sound.cpp
index 00bacdab..8a58e5ab 100644
--- a/src/io/sound.cpp
+++ b/src/io/sound.cpp
@@ -114,7 +114,15 @@ void audioCallback (void * userdata, unsigned char * stream, int len) {
 		// Read the next portion of music into the audio stream
 #if defined(USE_MODPLUG)
 
-		if (musicFile) ModPlug_Read(musicFile, stream, len);
+		if (musicFile) {
+			int bytes_read = ModPlug_Read(musicFile, stream, len);
+
+			// poor mans loop (so modplug needs no patching)
+			if (bytes_read < len) {
+				ModPlug_Seek(musicFile, 0);
+				ModPlug_Read(musicFile, stream + bytes_read, len - bytes_read);
+			}
+		}
 
 #elif defined(USE_XMP)