Properly and efficiently use split utility headers

src/serverobject.cpp

@@ -20,6 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "serverobject.h"
 #include <fstream>
 #include "inventory.h"
+#include "constants.h" // BS
 
 ServerActiveObject::ServerActiveObject(ServerEnvironment *env, v3f pos):
 	ActiveObject(0),
@@ -66,6 +67,11 @@ void ServerActiveObject::registerType(u16 type, Factory f)
 	m_types.insert(type, f);
 }
 
+float ServerActiveObject::getMinimumSavedMovement()
+{
+	return 2.0*BS;
+}
+
 ItemStack ServerActiveObject::getWieldedItem() const
 {
 	const Inventory *inv = getInventory();