Thread: Damage formulas, hit calculation

Short story: we need server-side calculations of damage, hit detection.

Data we have:

- Used weapon, default damage output
- Position and angles of actors

We need:

- Formula / math to detect a hit (and corresponding body part)
- Formula to calculate damage, taking chances of critical hit / limb dismembering into account

Things to consider:

- Size of player (adult / child), size of creatures
- Individual weapon properties, individual creature properties
- Projectile properties (i.e. calculating the impact position of a Fat Man nuke)
- AOE damage
- and probably more

This is a difficult task.
You also have to take account of creature type and current animation, and so we need to reverse creature meshes and animations.

I'm no expert but for damage, you would have to use rays and categorize body model vertices.

About the Damage Calculation, I guess the game uses the same S.P.E.C.I.A.L Game rules as Fallout 2 before.
I found the formular for Fallout 2 here: https://falloutmods.wikia.com/wiki/Fa...e_calculations

I researched damage formula for bullet:

Code :

pure_dmg = ((skill + 100) / 2)*(base_dmg / 100)
damage = (pure_dmg - (pure_dmg * DamageResist / 100)) * scale
damage_inhead = damage * 2

Scale is size of attacker.
P.S. This works well for bullet (pistols, miniguns, SMG, etc) and NPC (I think that is true for creatures).

UPDATE. This true for all weapons except melee and explosive weapons(grenades, missle launchers, Fat Man, all who created explosion).

Code :

HP = (endurance * 20) + 90 + (level * 10)

Don't forget perks.

I think that we should to detect hit with the client, it will facilitate the work. I already have some information how to do it.

That would be nice. If we could detect hits/impacts and their locations in the client, we could pass that information to the server which could do damage calculation then.