//called when a remote host requests an object be removed
public boolean remove(SynchronizeRemoveMessage srm, Object obj) {
PlayerSphere s = (PlayerSphere)obj;
System.out.println("Removing player " + s.getName());
return s.removeFromParent();
}
//generator function to create new PlayerSpheres for remote players
private PlayerSphere buildRemotePlayer() {
PlayerSphere s = new PlayerSphere("remoteSphere", ColorRGBA.green.clone());