SceneObject.cpp

class SceneObject {
 public:
  virtual ~SceneObject() {}
  virtual void Update() {}
  virtual void LateUpdate() {}
  virtual void PhysicsUpdate() {}
  virtual void DrawImmediate() {}
};

struct SceneObject_VTable {
  void* dtor;
  UpdateFn* update;
  UpdateFn* late_update;
  UpdateFn* physics_update;
  UpdateFn* draw_immediate;
};

SceneObject_VTable* GetVtable(SceneObject* obj) {
  SceneObject_VTable** vtable_ptr = (SceneObject_VTable**)obj;
  return *vtable_ptr;
}