As Above So Below - Stair Temperature Fix

Integrated into As Above, So Below II

This fix has now been officially integrated into the current version of As Above, So Below II. This mod is no longer required when using the latest version of As Above, So Below II. It remains available for archived or older mod versions and to avoid disrupting existing subscriptions and collections. Leaving it enabled is safe: the XML patch becomes a harmless no-op because the upstream definition now already uses the corrected Normal. Many thanks to astryl for reviewing and integrating the fix upstream.

As Above So Below - Stair Temperature Fix

A small XML fix for As above, So below II that prevents stair, ladder and elevator portal cells from retaining extreme temperatures indefinitely.

The problem

After a fire heats a stairwell, the portal cell can remain at the same dangerous temperature even after the surrounding rooms have cooled. Pawns crossing that cell may receive burns long after the original fire is gone. In the reproduced save, a basement stair cell remained at approximately 716 C for tens of thousands of ticks and burned multiple pawns passing through it.

Root cause

The shared link definition used by stairs, ladders and elevators inherits RimWorld's Building_Door. Vanilla doors tick normally and periodically run the game's own temperature equalization through the occupied cell. As above, So below II changes that shared definition from Normal ticking to Never. This also disables the inherited door temperature update. Heat can enter the portal cell during a fire, but the normal mechanism that lets it dissipate no longer runs.

What this patch changes

The patch restores the shared link definition to: Normal This allows RimWorld's existing Building_Door.Tick() and temperature equalization logic to operate normally again.

• No temperature clamps or invented safe values.
• No forced temperature transfer between levels.
• No Harmony dependency.
• No DLL or persistent save data.
• Safe to add to an existing save.

If a portal is already holding stale heat, it should begin returning toward the temperature of its surroundings after loading with the patch enabled.

Requirements and load order

• RimWorld 1.6
• As above, So below II
• Load after As above, So below II. RimWorld should arrange this automatically from the dependency metadata.

Credits

Fix identified, reproduced and tested by YVY with ChatGPT. All credit for the original multi-level system belongs to astryl, author of As above, So below II.