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[Outdated] Checkpoint Doors

While you can still use this version of the mod, I've uploaded a redesign of the assembly to make use of the Circuit Box object.

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A door assembly (ideal for an airlock) with wiring that prevents both doors from being open simultaneously while still allowing both to be closed simultaneously. Both doors open and close as expected until one door is open and then you attempt to open the other door.

For example, If the left door is open, pressing the button for the right door will simultaneously close the left door and open the right door (or vice versa).

I've used relays to make changing the door type easier. You only need to wire the TOGGLE_STATE and STATE_OUT to the necessary relays once for each door. This means you could use non-windowed doors or hatches, or any other combination of door types if you so desire.