The main engine is a variation of the one in the tutorials, but I added other features. You can fire a ball thing by clicking, and hitting shift releases a small ball that I tried to add minimaly physics to. Space is jump, and W, S, A, D are moving keys. You can jump onto those boxes, but it’s quite awkward. I’ll post the source, but it doesn’t have comments, just directions to certain functions.
Link’d: http://www.sheezyart.com/view/166881
The physics-type balls seem to get absorbed by the boxes, so when someone asks, I just say that the boxes are jelly…