private void UpdateEmitter(MassTestChamber master, int deltaTime)
        {
            int direction = master.SimulationInput.PollInteger(MassTestChamber.EmitterMotorKey);

            if (direction != 0)
            {
                EmitterCart.Drive(direction > 0, deltaTime);
            }
            bool emitting = master.SimulationInput.PollBoolean(MassTestChamber.EmitterKey);

            if (emitting)
            {
                bool field      = master.SimulationInput.PollBoolean(MassTestChamber.FieldGeneratorKey);
                bool focusOn    = master.SimulationInput.PollBoolean(MassTestChamber.FocusKey);
                bool focusValid = FocusCart.FrontPositionReached && focusOn;
                Emitter.ShowAsActiveWith(EmitterCart, field, focusValid);
            }
            else
            {
                Emitter.ShowAsOff(EmitterCart);
            }
            master.SimulationOutput.SetValue(MassTestChamber.EmitterFrontKey, EmitterCart.FrontPositionReached);
            master.SimulationOutput.SetValue(MassTestChamber.EmitterBackKey, EmitterCart.BackPositionReached);
        }