Unstationary Scaffold
The Unstationary Scaffold is a set of items in BEE2.4. It was originally from Portal 1, and was ported to Portal 2 in BEE2.4. It is a platform which moves along a light rail. Unlike the Track Platform, it is able to turn and move away from walls. However, it is always facing upwards. There are three items which can be used to control the movement of Unstationary Scaffolds: the Piston Emitter, Wall Emitter, and Slot.
The three Unstationary Scaffold items can be placed in the chamber and connected using "Connect to...". Make sure to connect them in the order you want the platform to travel (currently, loops are not supported). The platform will then appear at the first item. Connecting other items to any of these will toggle the entire rail. The platform can be set to behave similar to Track Platforms (oscillating or not oscillating), or a conveyor-like continuous flow of platforms. There are three items that can be used to create a path for Unstationary Scaffolds.
A light rail emitter mounted on a piston. Move the starting height to the height you want the piston to be at. Moving the second height will not affect the item in any way. If one of these is located at the end of a rail, it will turn into an endcap.
A wall-mounted Unstationary Scaffold emitter. This can be positioned like a light strip. If connected with Piston Emitters, there will be a slight slope in the light rail.
This item is once again placed on the wall. However, it can only be placed at the start and end of a rail. Instead of platforms turning back around, they will move inside of the slot. At the same time, platforms will be dispensed from the slot at the beginning. This means that the platform will only ever move in one direction.
- Connect to... - Used to connect this item to another, through inputs and outputs. However, Unstationary Scaffold items use this for a second purpose, to create the path for the platform. Connection visibility controls how this connection appears (connections between platforms. are always invisible), and Remove connections will remove an existing connection.
- Start Enabled - Whether the platform should start active.
- Start Reversed - Whether the platform should oscillate. Has no effect when Slots are in use.
- (Slot only) Timer delay - A timer widget which allows choosing a value of 3-30 or infinite. Determines the amount of time between platforms being dispensed.
Unstationary Scaffold palette icons.