Prevent gap shroud from after defeat

Spawner.vcxproj

@@ -36,6 +36,7 @@
     <ClCompile Include="$(ThisDir)\src\Misc\Bugfixes.CommonCrashes.cpp" />
     <ClCompile Include="$(ThisDir)\src\Misc\Bugfixes.Desyncs.cpp" />
     <ClCompile Include="$(ThisDir)\src\Misc\Bugfixes.ExceptionCatch.cpp" />
+    <ClCompile Include="$(ThisDir)\src\Misc\Bugfixes.GapGenerator.cpp" />
     <ClCompile Include="$(ThisDir)\src\Misc\Bugfixes.IsoMapPack5Limit.cpp" />
     <ClCompile Include="$(ThisDir)\src\Misc\Bugfixes.LocalInterfaces.cpp" />
     <ClCompile Include="$(ThisDir)\src\Misc\CopyProtection.cpp" />

src/Misc/Bugfixes.GapGenerator.cpp

@@ -0,0 +1,34 @@
+/**
+*  yrpp-spawner
+*
+*  Copyright(C) 2026-present CnCNet
+*
+*  This program is free software: you can redistribute it and/or modify
+*  it under the terms of the GNU General Public License as published by
+*  the Free Software Foundation, either version 3 of the License, or
+*  (at your option) any later version.
+*
+*  This program is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License
+*  along with this program.If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <Utilities/Macro.h>
+#include <HouseClass.h>
+
+// Every 120 frames, the game hides cells marked with FlagToShroud.
+// Revealing the map on defeat leaves these marks intact, so skip their processing
+// for the defeated local player while retaining the visibility recalculation pass.
+DEFINE_HOOK(0x578148, MapClass_UpdateShroud_SkipDefeatedPlayer, 0x7)
+{
+	enum { SkipReshroud = 0x5781A9 };
+
+	if (HouseClass::CurrentPlayer->Defeated)
+		return SkipReshroud;
+
+	return 0;
+}