We are about to switch to a new forum software. Until then we have removed the registration on this forum.
So, I'm pretty new to processing and I'm trying to make a simple game. The program opens with the title and "Start", "Help", and "Exit" buttons. How do I clear the screen, change it's contents when I use the mouse to click on each button. I know the coordinates of each button and I tried using that, but I don't understand how to use mousePressed(), and mouseClicked(). I just need to know how to use those two functions, making up the other two screens is something I have figured out. It's only going to that screen that I'm having problems with.