Drop Tower Open Beta

--UPDATE 0.4
beta version

--UPDATE 0.3
beta version

This is a drop tower which you can often see at the amusement park.

Lifting Machine Control: 'Slider' for speed, 'upper button' for toggle up/down, and 'lower button' to grab/drop the car.

Status Display Description: 'left display' shows which direction that the machine is moving and 'right display' shows how the machine is handling the car.(G: Grab Mode, D: Drop Mode)