Algodoo

Some more logic gates in addition to the NOT-Gate I released.

How the NOT-Gate works now (there was a bug):
The number of laser hits is saved in the color of the rectangle. If there was only one laser hit between two white laser hits, the rectangle will become transparent, because there was no input, so VDD must be connected to the output. If there were two laser hits, it will become opaque, because there was an input, so no output must leave the gate.

The BUF-Gate (buffer; returns the input value) is opaque when there was only one laser hit and transparent when there were two.

CONTROLS:
Keys [1] and [2] to toggle the inputs.