I'm working on a replacement script for various weapons that apply Fatigue damage the has proper dynamic damage affected by things like skill and the target's armor, but I'm having some issues.
Most importantly, I can't figure out how to find the target's Damage Threshold, only Armor Rating.
Secondly, I'm curious if this line method will work to avoid a large number of unnecessary references (it does allow the script to save):
Set FatigueDamage to ((Player.GetEquippedObject).GetDamage)*2

This is an OnHit script, and alternatively if I could just find some way to register the actual damage done by the attack and simply double that, this would be much simpler.

You're going to have to use an additional ref variable. I too try as hard as I can to keep variable count low and reuse them when possible, but the scripting just can't handle what you have there.

Personally, I declare temp variables in most of my scripts, like:

float fffint iiiref rrr

and just reuse fff, iii and rrr for any intermediates or values that I get every pass of the script, so for your above code, I'd do:

set rrr to Player.GetEquippedObjectif rrrset FatigueDamage to rrr.GetDamage * 2endif

and I'd most likely dump the FatigueDamage named variable and just use fff in place of it and any other one-use floats in the script. Notice I also added a safety to make sure rrr was valid.

As for your other questions, I don't recall off the top of my head. I'm sure there's a get DT function somewhere...

Queue

I can't find a function relating in any way to Damage Threshold anywhere, either as a base function or from FOSE.

GetArmorDT / GetArmorDamageThreshold

Not sure if you can check an NPC's DT directly though... hm...

Edit: NPC.GetAV DamageThreshold

Queue

Does the GECK not give error messages when a script fails to save? I could have sworn the Oblivion CS did, but maybe I'm mistaken.
I'm trying to save this script, but it's not working:

If I've made a mistake here, I assume it may be because I need a reference for GetContainer... I just have no idea how I can get either the weapon being used as a reference, or by extension the holder of said weapon.

You're passing functions a base object as a reference. GetEquipped returns the base object of the player's weapon.

Wait, so GetContainer would actually work fine here? How can I reference the exact weapon being used by the script?
The script is attached to the weapon directly, so could GetSelf work?

Thanks for all the help so far, it's not easy to get any help in the Fallout forums with so little activity here.