(Matt Rocheleau for Boston.com

By Matt Rocheleau, Town Correspondent

All in one large room, all at once, children shot basketballs, rolled around on small bicycles and scooters, hula-hooped, and played other activities. A team of women roller-skated in circles; other groups lobbed tennis balls to one another or practiced martial arts drills.

There were soccer nets on either end of the arena. A dark-red, two-lane track lined with parents, local elected officials, area police officers and other bystanders surrounded the many on-goings on the central, light-navy blue court surface.

The multi-functional Melnea A. Cass Recreational Complex, which also features classrooms and an outdoor swimming pool, showcased its versatility Thursday when the 43-year-old Roxbury facility re-opened with a new look.