Meeting requirement of the mechanical pressure angle, the minimum base radius of a plate cam for oscillating follower is determined by the 0.618 optimization method.

Your Sensor Tower (placed on the ramp at the front of your base) makes all enemy units within its sweep radius appear as red blips on your minimap.

They found that most people stayed within an area with a six-mile (10 km) radius while a few did travel hundreds of miles from their home base.