Algodoo

That's some amazing coding you did, Mr. Noonan! It took me a while to figure out how you controlled the image, and now I think I understand it (well, maybe a little bit). As usual, the scene overall was very nicely done.

The only minor criticism I have (which you probably already know about) is that the buttons on the GUI control panel are a bit sluggish. Mouse clicks must be done slowly in order for them to work. But maybe that's just my 10 year old computer showing its age.

Q: The buttons on the GUI control panel are a bit sluggish.
A: Yes, that's because Algodoo is detecting button clicks not the OS. If the scene is running at 100% simulation time, then the mouse is checked 5 times a second. Since a button click requires a nousedown and mouseup event, the click has to be longer than 0.4 seconds. The mouse check rate can be increased by changing "_c > 11 ? {" to a lower value in the update event for each button. "_c > 11 ? {" was chosen as a compromise between button responsiveness and scene lag.