engine: fix bsp21 loading

engine/modelloader.cpp

@@ -396,6 +396,8 @@ static worldbrushdata_t	*s_pMap = NULL;
 static int				s_nMapLoadRecursion = 0;
 static CUtlBuffer		s_MapBuffer;
 
+int s_MapVersion = 0;
+
 // Lump files are patches for a shipped map
 // List of lump files found when map was loaded. Each entry is the lump file index for that lump id.
 struct lumpfiles_t
@@ -469,6 +471,8 @@ void CMapLoadHelper::Init( model_t *pMapModel, const char *loadname )
 		return;
 	}
 
+	s_MapVersion = s_MapHeader.version;
+
 	V_strcpy_safe( s_szLoadName, loadname );
 
 	// Store map version, but only do it once so that the communication between the engine and Hammer isn't broken. The map version

engine/staticpropmgr.cpp

@@ -60,7 +60,7 @@ ConVar r_staticpropinfo( "r_staticpropinfo", "0" );
 ConVar  r_drawmodeldecals( "r_drawmodeldecals", "1" );
 extern ConVar mat_fullbright;
 static bool g_MakingDevShots = false;
-extern dheader_t s_MapHeader;
+extern int s_MapVersion;
 //-----------------------------------------------------------------------------
 // Index into the fade list
 //-----------------------------------------------------------------------------
@@ -1342,12 +1342,13 @@ void CStaticPropMgr::UnserializeModels( CUtlBuffer& buf )
 			case 9: UnserializeLump<StaticPropLumpV9_t>(&lump, buf); break;
 			case 10:
 			{
-				if( s_MapHeader.version == 21 )
+				if( s_MapVersion == 21 )
 					UnserializeLump<StaticPropLumpV10_21_t>(&lump, buf);
 				else
 					UnserializeLump<StaticPropLumpV10_t>(&lump, buf);
 				break;
 			}
+			case 11: UnserializeLump<StaticPropLumpV11_t>(&lump, buf);
 			default:
 				Assert("Unexpected version while deserializing lumps.");
 		}

public/gamebspfile.h

@@ -443,6 +443,12 @@ struct StaticPropLump_t
 		m_FlagsEx = _rhs.m_FlagsEx;
 		return *this;
 	}
+
+	inline StaticPropLump_t& operator=(const StaticPropLumpV11_t& _rhs)
+	{
+		(*this) = reinterpret_cast<const StaticPropLumpV10_21_t&>(_rhs);
+		return *this;
+	}
 };
 
 struct StaticPropLeafLump_t