From 6d7ebb768679be3d0baad3d408b2c6394233cad7 Mon Sep 17 00:00:00 2001
From: Arisotura <thetotalworm@gmail.com>
Date: Sat, 25 Mar 2023 10:03:33 +0100
Subject: [PATCH] attempt at preventing desyncs, let's see

---
 src/frontend/qt_sdl/Netplay.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/frontend/qt_sdl/Netplay.cpp b/src/frontend/qt_sdl/Netplay.cpp
index 2aa524cf..7fd3b60c 100644
--- a/src/frontend/qt_sdl/Netplay.cpp
+++ b/src/frontend/qt_sdl/Netplay.cpp
@@ -677,8 +677,15 @@ void ProcessMirrorClient()
 {
     if (!MirrorHost) return;
 
+    bool block = false;
+    if (emuThread->emuIsRunning() && NDS::NumFrames > 4)
+    {
+        if (InputQueue.empty())
+            block = true;
+    }
+
     ENetEvent event;
-    while (enet_host_service(MirrorHost, &event, 0) > 0)
+    while (enet_host_service(MirrorHost, &event, block ? 5000 : 0) > 0)
     {
         switch (event.type)
         {
@@ -839,6 +846,7 @@ void ProcessInput()
 
     if (frame.FrameNum < NDS::NumFrames)
     {
+        // TODO: this situation is a desync
         printf("Netplay: BAD! LAGGING BEHIND\n");
         while (frame.FrameNum < NDS::NumFrames)
         {