Armor reimplementation & formula rework & penetration

[Lizurt]

Purpose

fixes #6288

Highlights

• Damage to a body part protected by multiple armor is now calculated using the formula: InitialDamage * armor1 * armor2 * ... * ArmorN = damageDealt instead of InitialDamage * (Armor1 + Armor2 + ... + armorN).
• WearableArmor now protects specific body parts with specific protection options. This makes it possible to make modular armor.
• WearableArmor's armor bit mask (enums) have been replaced with BodyPart's enum.
• The armor of the body parts now extends not only to the organs(for example, it is logical that the xenomorph's exoskeleton will be stronger than a pathetic human skin).
• Bullects can now penetrate armor

It was tested on headless server and seems to work fine.

Notes:

Changelog:

CL: Armor system was reworked

[corp-0]

WearableArmor's armor bit mask (enums) have been replaced with BodyPart's enum.

does this mean armor can only protect one body part at a time? The intention of the bitflags was recreating how they behave in byond where you actually use bitflags to determine what body parts a particular armor piece protects.

[corp-0]

Nevermind just read it is using a list now

[Lizurt]

Should I edit prefabs or assets here for armor penetration and armor or is it better to do it in a separate PR?

[corp-0]

Uhm, you can do it here but if you can bundle the prefab changes in a commit separated from code changes, I'd love you to all eternity.

[Lizurt]

It looks like that's all. The PR is ready for review

[PerfectTangent]

How is negative armor handled? Does it increase damage taken in the same manner that positive armor reduces it?

[Bod9001]

You mean negative armour, humm yeah multiplies it

[corp-0]

do we ever want to allow negative damage tho? I think healing should be done using its own interface rather than making negative damage.

[corp-0]

nevermind I just read Bod's answer.

[Bod9001]

dam it, forgot to check before merging xD, ClothingArmors isn't used anywhere

[Bod9001]

it's okay it's used I was just a dumb dumb