func NewClock(universe *mud.Universe) *simple.PhysicalObject {
clock := simple.NewPhysicalObject(universe)
clock.SetTimeHandler(updateDescription)
clock.SetVisible(true)
clock.SetCarryable(false)
return clock
}
func NewBall(universe *mud.Universe, description string) *simple.PhysicalObject {
ball := simple.NewPhysicalObject(universe)
ball.SetDescription(fmt.Sprintf("A %s ball", description))
ball.SetVisible(true)
ball.SetCarryable(true)
ball.SetTextHandles("ball", "red ball")
return ball
}