method
Ui.clicked
Ui.clicked(id: UI_Name) -> bool
True on the frame a focused control with that id was activated (Enter, Space, or pad A). The event form is @On(UiClicked) handler … { if id == UI_Name { … } }; either can become another scene.
Example
# doc-check: skip — illustrative
handler Menu phase Update {
if Ui.clicked(id: UI_Play) { become Play }
}