Damage calculation for zero damage items

[jcrabbit]

How is damage determined for items with a base damage of zero? For example, the rope from the XPiratez mod? https://www.ufopaedia.org/index.php/Melee_Weapons_(Piratez)

From the searches I've found, it seems like the rope simply causes choke damage which can knock out units.

https://openxcom.org/forum/index.php/topic,6109.msg93488.html#msg93488
https://openxcom.org/forum/index.php/topic,5345.msg92866.html#msg92866
https://openxcom.org/forum/index.php/topic,7877.msg123317.html#msg123317

Setting aside TUs, given that rope is described as having zero damage, how does it actually affect units? It has a damage bonus of:

Damage+0.15*Strength+0.15*Bravery

Given a solder with 100 strength and 100 bravery, does that translate to 30 choking damage? Or does the 30 here become a multiplier, i.e., 0*1.30? A scaling multiplier doesn't seem to make sense here.

[Solarius Scorch]

It's not a multiplier, it's additive... The "+" is a clue

So yes, your calculation is correct, such a soldier would do 30 damage on average (assuming standard damage roll and no other complications, like armour value and resistances).

[jcrabbit]

Thanks Solarius!