Airlock

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This section needs Description of procedural airlock structures.

Airlocks can be open or closed without exposing a starship to the vacuum of space.
Airlocks can be detected with the sign text [airlock].
Right clicking the sign toggles the airlock by converting the iron bars to portal blocks and vice versa.
Airlocks can only be traversed when they are activated.
Note: Airlocks can be used by starships when activated.

Airlock

Airlock
Deactivated Activated
Properties
Resource Requirements
Invicon Iron Bars.png: Inventory sprite for Iron Bars in Minecraft as shown in-game linking to Iron Bars with description: Iron Bars2 Iron Bars 2
Iron Block 1
Any Sign 1

The normal Airlock is a simple version of the Expandable Airlock.

Expandable Airlock

Expandable Airlock
Deactivated Activated
Properties
Resource Requirements
Invicon Iron Bars.png: Inventory sprite for Iron Bars in Minecraft as shown in-game linking to Iron Bars with description: Iron Bars Iron Bars 1-5625
4 Iron Block 4-5
Any Sign 1
Invicon Any slab.png: Inventory sprite for Any slab in Minecraft as shown in-game linking to Any slab with description: Any slab2 Any slab 2-300

The Expandable Airlock can be customized in height and width.
It has to consist of 4 Iron Block corners, with any Slabs connecting them.
The sign has to be placed on the left side of the frame and the slab the sign sits on needs to be replaced with an Iron Block.
Note: Despite the error message claiming the Slabs need to be double Slabs, it works perfectly fine with single Slabs.