How can I test with a function whether another function is being executed?

[GoToLoop]

Handle (and consume) mouse events in classes

To my surprise, Processing doesn’t directly call back input events such as mousePressed(), keyReleased(), etc. But only these 2 input events: mouseEvent() & keyEvent(). So we can only use those 2 for registerMethod() as input events: /** * RegisterMethod MouseEvent (v1.0) * GoToLoop (2020/Feb/10) * * https://Discourse.Processing.org/t/ * handle-and-consume-mouse-events-in-classes/17689/4 * * https://GitHub.com/processing/processing/wiki/ * Library-Basics#w…