#include <plib/sg.h> // plib include
+#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/math/interpolater.hxx>
#include <simgear/math/point3d.hxx>
// Define a structure containing the global lighting parameters
-class FGLight : public FGSubsystem
+class FGLight : public SGSubsystem
{
private: