Frame-by-Frame Invocation

Every Widget object in Newcar has a setUpdate method. The function set by this method is called in each frame and is passed two parameters - the number of frames that have already passed and the object itself. This also reflects the advantages of chain syntax.

Usage:

widget.setUpdate((elapsed, widget) => {
  if (elapsed === 100) {
    widget.radius += 100;
  }
});

The above code will increase the radius of the circle by 100 at the 100th frame.