How to implement a robot using legos?

The Botball Educational Robotics Program integrates science, technology, engineering, and math with robotics in order to keep students on the cutting edge of technology. Botball uses completely autonomous robots that rely on computer programming to start, stop, and maneuver on the game board. Each robot uses sensors to detect changes in light, sound, distance, and color. The robot’s actions are based on the feedback from the sensors combined with the computer programming written and implemented by the students in advance. The challenge which these robots are to complete changes yearly, however, some factors remain the same from year-to-year. These factors include the continued use of C as the programming language, Legos as the base for building, and GameBoys (or other such computers) as the "brain". The schedule of Botball also remains roughly the same each year being divided into three parts, the pre-conference season, the regional building and programming season and tournament, as well as the additional national building and programming season and tournament.