As we all know, using certain CC arches and stairs in apartments can cause them to break, as the game doesn't recognize anything connected to the apartment beyond that point as a valid part of the apartment, so the apartment is seen as being unfinished/unenclosed. However, I'm pretty sure there are custom arches and stairs that are okay to use in apartments.

So does anyone know what it is about these "improperly-made" custom items that makes them incompatible with apartments? I'm wondering if there's some flag or value or in the package file that could be copied over from compatible objects to incompatible objects in order to fix them.

@Acrylonitrile, itsdiamondeyesuniverse did some sleuthing and it's fixable. Their read-me from here says the following:


It seems that arches (and other things like doors) that don't work with apartments lack certain "Object Function" BHAVs:

0x204b "Function - Load"
0x201b "Function - Room Changed - SG"

41A7 - seems to be empty
41A8 - Needs "Load"
41A9 - Needs "Load" and "Room Changed"
41AA - Needs "Load" and "Room Changed"
41AB - Needs "Load"

So replacing "Object Functions" with working ones (having those BHAVs) with corresponding "Instance" values seems to make arches work in apartments.

Ooh, good to know!