Is there a library which makes it possible to write LEGO Mindstorms programs for RCX 2.0 in Java or C++? With the LEGO software it takes so much time to write good programs.
I was looking into this just recently. There are libraries and also it seems there are other firmwares offering alternative operating systems you can embed on the Mindstorm.
For C++ you could try:
For java solutions might be: