Finally, a Physics Engine

Finally, I added the so claimed Physics Engine.
It was quite challenging, I must say, but it was a great experience :)

I have also developed a new 'rendering' engine.
Now, instead of a single mask that shows the level behind the splashes, each object is a separate canvas (BitmapData) and all splashes are drawn, event those that are outside the drawing area. But now I need to figure out some way to rotate the splash around the cube....

For now, please stay with the preview (no 'restart' button, sorry):

http://animadock.quotaless.com/Darkness.html
(link updated)