#include <math.h>
#include <stdlib.h>
#include "SceneGraphRoot.h"
#include "Application.h"
#include "MainLoop.h"

class walk : public Application {

    MainLoopPtr init(Viewer *viewer, int screen_w, int screen_h);
    MainLoopPtr init_only_sg(SgChange *viewer, int screen_w, int screen_h);
};