Armor Mechanics

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Armor

Armor is a feature of three creatures within Barotrauma: the Mudraptor, Endworm, and Moloch. In its simplest form, armor is a limb with large resistances to damage that sits on top of another limb, thus protecting it. The resistance values of each creature's armor are identical and shown in the table below.

Burn	Bleeding	Internal Damage
0.25x	0x	0.1x

Armor can be severed from a living creature to expose the vulnerable flesh beneath it. There are many factors that go into severing a limb, which are expanded upon below.

Limb Severance

Limb severance is the main mechanic used to counter armor. It allows certain damage quantities to remove a limb from a living creature, which can either break armor or disable an attack. There are two key factors that make up limb severance.

Minimum Severance Damage

Minimum severance damage is the minimum damage required in a single shot, after resistances have been factored in, to sever a limb. For example: an armor limb has a minimum severance damage of 15. It has an Internal Damage resistance of 0.1x, reducing all incoming sources of damage by 90%. If this limb takes 28 Gunshot Wound damage from a Revolver Round, it would calculate 28dmg x 0.1 = 2.8 total damage. Because 2.8 is lower than 15, there is no chance for the revolver round to sever this limb.

If the damage source is changed to a Railgun Shell for example, the damage calculation changes. A single railgun shell deals 250 Lacerations damage, making the new calculation 250dmg x 0.1 = 25 total damage. Because 25 is higher than 15, the limb moves on to the second factor that determines the chance of a limb being severed: Limb Severance Probability.

Tables of Severance Stats

Ammunition

Icon	Item	Damage			Limb Severance Probability (%)	Armor			Total Damage	Mudraptor Severance Chance(%)	Moloch Severance Chance(%)	Endworm Severance Chance (%)
		Burn	Bleeding	Gunshot Wound		Burn	Bleeding	Internal Damage
	SMG Magazine	0	12.5	12.5	10	0.25x	0x	0.1x	1.25	0	0	0

Human Resistances and Armor

Humans, like all Creatures, have resistances to damage as shown in the table below.

 

Limb	Bleeding	Lacerations	Blunt Force Trauma	Bite Wounds	Gunshot Wound	Note
Head	x 0.75	x 0.5	x 0.5	x 0.75	x 0.5	25% chance to gain 10 Concussion after receiving 5 Internal Damage, Blunt Force Trauma, Bite Wounds, Lacerations or Deep Tissue Injury from a single attack.
Torso	x 0.75	x 0.5	x 0.5	x 0.75	x 0.5
Arms & Legs	x 0.75	x 0.5	x 0.5	x 0.75	x 0.5

A Human can alter their resistances through different Gear which can be worn. Common examples of this include:

• Body Armor
• Diving Suit
• Security Officer's Uniform

All types of gear can be found on the master page.
Resistances are applied successively, so when shot with a Revolver using Depleted Fuel Revolver Rounds in the torso, a human wearing a diving suit and a gunner's uniform will receive ~9 Gunshot Wound:
35dmg - 50% - 35% - 20% = 9.1