Question

I’m wondering how to println a sentence ONCE in Processing. when I type println("Hello World!"); it just shows lots of Hello World! sentences. I know how to fix it with keyPressed (when the key is pressed, type this, and stuff) but I don’t know how to do it in a simple way…

Answer 1

Set a flag so that it only gets printed once. For example, at global scope you should have:

 bool did_print = false;

And where you do the println:

 if(!did_print)  {
      println("Hello World!");
      did_print = true;
 }