Problem to solve

It would be convenient to propagate PointerHoverEvents to child Components, not just handle them from the base game.

Proposal

Make a HasCursorHandlerComponents mixin on FlameGame, could be very similar to HasKeyboardHandlerComponents. See example below:

mixin HasCursorHandlerComponents on FlameGame implements MouseMovementDetector {
  @override
  @mustCallSuper
  void onMouseMove(PointerHoverInfo info) {
    propagateToChildren<CursorHandler>(
      (CursorHandler child) => child.onMouseMove(info),
    );
  }
}

More information

Interested in a PR, basic implementation already tested.