From 1f6d44b29ad71075bfc4b46d6f1a61a86777a5d4 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Sun, 20 Feb 2022 23:13:52 -0500
Subject: [PATCH] VGM export: fix song end effect hang

---
 src/engine/vgmOps.cpp | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/engine/vgmOps.cpp b/src/engine/vgmOps.cpp
index 84c673e57..aa9e22498 100644
--- a/src/engine/vgmOps.cpp
+++ b/src/engine/vgmOps.cpp
@@ -977,7 +977,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
         writeLoop=true;
       }
     }
-    if (nextTick()) {
+    if (nextTick() || !playing) {
       done=true;
       if (!loop) {
         for (int i=0; i<song.systemLen; i++) {
@@ -991,6 +991,11 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
         w->writeC(i);
         loopSample[i]=-1;
       }
+
+      if (!playing) {
+        writeLoop=false;
+        loopPos=-1;
+      }
     }
     // get register dumps
     for (int i=0; i<song.systemLen; i++) {
@@ -1126,8 +1131,13 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
   w->writeI(gd3Off-0x14);
   w->writeI(tickCount);
   if (loop) {
-    w->writeI(loopPos-0x1c);
-    w->writeI(tickCount-loopTick-1);
+    if (loopPos==-1) {
+      w->writeI(0);
+      w->writeI(0);
+    } else {
+      w->writeI(loopPos-0x1c);
+      w->writeI(tickCount-loopTick-1);
+    }
   } else {
     w->writeI(0);
     w->writeI(0);