Ok, I figured it out, and wheels are really simple, although tricky to draw.

You draw a circle (starting at 9:00 or 3:00 works best for me) and then when you come back to your starting point, draw a straight line inwards to the centre of the circle. Note: The wheel has to be a single stroke. Do not lift the stylus until you reach the centre of the circle. It's ok if you overshoot the centre a bit. Once you get there, lift the stylus.

EDIT: I found that drawing from the centre of the circle can be easier. Your wheel should look like a bit like a lower-case "e". Don't go too far, though, if your "spoke" sticks out of the circle, it will jam the wheel's rotation.

You add a strut (or "forks" if you were drawing a bike) by starting at the centre of the circle and drawing outwards.

I was able to draw a delightful little bike-thing by drawing two wheels and joining them with an upside-down U shape. The bike rolled down the ramp fairly well.

I still would love a record-and-replay function. I'll have to make a bike as a new level just to make it clear; it's very hard to just describe in words.

Next, someone has to make a working ferris-wheel or water-wheel contraption that spins when you drop stuff on it.

EDIT: I also really want a way to copy and drag objects around, at least in level-editing mode. That way, once I get a working wheel-object, I don't have to keep re-inventing it each time. I can just copy the working one and move the copy.

Man, is it HARD to draw stuff on my N800! The touchscreen has never seemed more inaccurate and the "clickety-click" of the tablet thinking I'm drawing 4 short lines instead of one long one has never been more annoying than when I'm trying to draw something like this.

Anyway, after almost an hour of draw-delete-draw-delete etc, Here's a pic of the bike rolling down a ramp:



EDIT: Oh man, I'm having tons of fun trying to get my bike to do tricks with ramps, etc. It is hilarious to see it flip over on a steep jump ramp and fall upside-down, wheels spinning slowly to a stop.

So... does it pwn Linerider yet?

I'd never heard of Linerider until you told me about it! There's another one that would be great adapted for the tablets. At the moment, it isn't great on the tablet, since it runs too slowly in Flash and we don't have Java for the mobile version.

But I would like to see some of the features of Linerider incorporated into Numpty... Zoom and drag especially.

I think it's much better than Line Rider, all we need is a video recording feature for it so people can post crazy videos on youtube....then maybe Numpty will get a Nintendo version as well!

Also, attached some new levels...same ones in there I posted before, but two new ones as well. One of the new levels has a very nicely working trampoline, if you get it right you can hit both stars in the level with one stroke.

From xterm, become root
"sudo gainroot"

navigate to the location of your files
"cd /[location of your files]"

copy your files
"cp [file's name] /[location of the numtyphysics]"

Restart if necessary.

Try this level.
It's possible (in theory) without pause mode.. but haven't succeeded myself yet. Hint: secure some elements before dropping anything.
http://80.223.220.69/~werre/pengu2.nph.gz

Ack... it really needs a shapes library, especially for circles and rectangles...

That's it! I was thinking we needed some simple tools that allow for drawing rectangles and circles (I too am lousy at drawing), but a library would work. The important thing would be to keep it simple...

Heck, 2 or 3 basic shapes, handles for rotation and expansion-- done.

We could call it the Qole Toolset.