Another newbie question:
For a typical action game, you want the game event loop to run constantly, even if the user doesn't do anything that frame. But for a turn-based game (or a just a non-game app), you want the game event-loop to wait for input as long as there is nothing else to do, otherwise you needlessly consume the user's CPU (and battery for laptops and mobiles).
Is there a way to tell Godot that an app wants the main event loop to wait for an input event?