It's not public because it forms the basis of a worksheet - however the completed source is included with the worksheet package as well. You can download it from http://www.greenfoot.org/greenroom/index.php/Target

I think I've found a bug as well - in the second level, climbing up the ladders to the top - when I reach the top of the ladder on the left, and hold down the up and right keys, I seem to vibrate along the base of the top level until I reach the other side...

Did you also put the ignite(true) and ignite(false) bits in the right places? It's not *just* putting the arrow keys in, I thought that'd be shortening it a bit too much. I've tried it quickly and it seems to work for me... I'll have a look at it in more detail and update the folder name a bit later.

I agree that the jumping could be slower, it's very frantic at the moment! At some point it'd be nice to see an animated pelican walking as well :) Nice start though!

That's an interesting point actually - for me it's around 1000x450 but, as they say, milage may vary. If you have a look on greenfoot discuss I've started a thread about what sizes fit what people... hopefully people will reply which may give you a better idea! Also, note the sizes I've used there are in pixels, not in 2 pixel blocks like you've used here (which will invariably make it twice as big!) - was there a reason behind using a cell size of two pixels? Usually when you want the smoothest movement, the 1 pixel size is best.

Hi, This was one of the first worksheets I wrote, and as you point out there is a lot to do in it - in the later ones you'll (hopefully) see I've tried to keep things a bit simpler. I haven't had a chance to write a simpler version of this one yet, but I will do at some point - just learning how to use the arrow keys seems like a good thing to focus on. It'll be on the greenroom when it's finished! Oh, and I had no idea it was called gravitron (with the r)... That'd be the second spelling mistake I've made in the name of a game so far (going along with dual / duel)!

You may want to consider making the world a bit smaller - it doesn't fit on my laptop's screen all at once, which does make running it / moving around more difficult!