Function Node._unhandledKeyInput

Called when an InputEventKey hasn't been consumed by input or any GUI. The input event propagates up through the node tree until a node consumes it. It is only called if unhandled key input processing is enabled, which is done automatically if this method is overridden, and can be toggled with setProcessUnhandledKeyInput. To consume the input event and stop it propagating further to other nodes, SceneTree.setInputAsHandled can be called. For gameplay input, this and unhandledInput are usually a better fit than input as they allow the GUI to intercept the events first.

void _unhandledKeyInput (
  InputEventKey event
) nothrow @nogc;