1.1 --- a/src/app.h	Sat Jan 31 20:01:35 2015 +0200
     1.2 +++ b/src/app.h	Sun Feb 01 12:51:10 2015 +0200
     1.3 @@ -9,6 +9,9 @@
     1.4  void app_keyboard(int key, bool pressed, int x, int y);
     1.5  void app_mouse_button(int bn, bool pressed, int x, int y);
     1.6  void app_mouse_motion(int x, int y);
     1.7 +void app_sball_motion(float x, float y, float z);
     1.8 +void app_sball_rotate(float x, float y, float z);
     1.9 +void app_sball_button(int bn, bool pressed);
    1.10  
    1.11  /* provided by the frontend */
    1.12  enum {