64-bit support for CSGO on Linux and macOS (#705)

core/HalfLife2.cpp

@@ -245,7 +245,12 @@ void CHalfLife2::InitLogicalEntData()
 				return;
 			}
 
+#ifdef PLATFORM_X86
 			g_EntList = *reinterpret_cast<void **>(addr + offset);
+#elif defined PLATFORM_X64
+			int32_t varOffset = *reinterpret_cast<int32_t *>(addr + offset);
+			g_EntList = reinterpret_cast<void *>(addr + offset + sizeof(int32_t) + varOffset);
+#endif
 
 		}
 	}
@@ -1357,7 +1362,7 @@ string_t CHalfLife2::AllocPooledString(const char *pszValue)
 
 bool CHalfLife2::GetServerSteam3Id(char *pszOut, size_t len) const
 {
-	CSteamID sid(GetServerSteamId64());
+	CSteamID sid((uint64)GetServerSteamId64());
 
 	switch (sid.GetEAccountType())
 	{