def activate(self, manager):
        grease.World.activate(self, manager)
        if self.is_multiplayer:
            self.running = False
Replicate dbs under the given root in an infinite loop.
dataset/ETHPy150Open caseman/grease/examples/blasteroids3.py/Game.activate--crossover with--dataset/ETHPy150Open openstack/swift/swift/common/db_replicator.py/Replicator.run_forever