There are a lot of very cool issues involved in RCJ. This is the official NJ/NY site:
http://rcj.sci.brooklyn.cuny.edu/By the way, there are a few postings about using NXTCam on Rescue Game. You may need to search on robocup or rcj to find them. You will find good discussions on programming color sensor + mindsensor Cam with RobotC....
I also wrote to the Technical Committee to request Robot-to-Robot communication on the soccer game in order to do ball negotiation as well. RobotC is pretty easy to use for these fun tasks.