1 files changed, 3 insertions, 2 deletions
diff --git a/include/base.h b/include/base.h
index 25e914b..592d8d9 100644
--- a/include/base.h
+++ b/include/base.h
@@ -13,8 +13,9 @@ namespace mogltk {
         int GetHeight(void);
 	virtual void Flip(void);
 	SDL_Surface * getsurface();
-	void Enter2DMode();
-	void Leave2DMode();
+	virtual void Enter2DMode();
+	virtual void Leave2DMode();
+	virtual bool is2D();
       protected:
           base(int, int, int, int);
 	void setsurface(SDL_Surface *) throw (GeneralException);