Yesterday it happened again, after a long pause: I got the Coding Fever.
The night before I dreamed of my Matura-Project, a simulation of a pendulum above 3 magnets (back then, written in Borland TurboPascal on MS-DOS). So somehow I thought that doing it again, but this time on a machine 20 times as fast, and in a language which makes it easier to develop (Perl), would be a good idea.
Result: I worked until 3 in the morning, but it was great fun.
Maybe I'll report some more (i.e. some details on the simulation, the code, some nice pics) in the coming days.