A bunch of includes needed wherever you derive from CComponent.

#include "SageComponent.h"
#include "SageSound.h"
#include "SageController.h"
#include "SageTimer.h"
#include "SageRandom.h"
#include "SageKeyboard.h"
#include "SageMouse.h"

Include dependency graph for SageComponentIncludes.h:

This graph shows which files directly or indirectly include this file: