Projectile foreign bodies

[sowelipililimute]

About the PR

• projectiles can now spawn foreign bodies stuck in someone

• atm this is limited to guns, which can get a bullet, incendiary bullet, or an uranium bullet someone stuck in someone

• embedded bullets take 5 minutes before they start doing effects

• BaseBullet embeds a 0.05/s poison at 50% base chance

• BaseBulletAP embeds the same as above but w/ 75% base chance

• BaseBulletPractice embeds at 0% base chance

• BaseBulletIncendiary embeds a 0.05/s burn at 50% base chance

• BaseBulletUranium embeds a 0.05/s radiation at 50% base chance

• the chance is modified by the Piercing of worn armour

Why / Balance

• it came to us in a dream
• surgeons could use more stuff to do after fighting happens
• make incendiary and uranium rounds even more evil

Technical details

• ProjectileForeignBodyComponent marks a projectile as spawning a foreign body on impact with the ProjectileForeignBodyAttemptEvent event
• ForeignBodyActivelyEmbeddedComponent keeps track of this foreign body being actively embedded in something and when it should start taking effects
• ForeignBodyEffectsComponent deals those effects
• two containers for foreign bodies: BodyForeignBodyContainerComponent/BodyPartForeignBodyContainerComponent that deal with foreign bodies in the context of a complex Body, whilst SimpleForeignBodyContainerComponent is for simple mobs
  • these respond to ProjectileForeignBodyAttemptEvent and spawn the embedded body in the appropriate place
• new surgery elements SurgeryRemoveForeignBodyStepComponent and SurgeryForeignBodyConditionComponent for removing foreign bodies surgically

Media

Requirements

• I have tested all added content and changes.
• I have added media to this PR or it does not require an ingame showcase.

Breaking changes

Changelog

🆑

• add: Bullets can now get stuck in you, and will start dealing trace amounts of damage after a few minutes. Surgical intervention is required to remove them.

[deltanedas]

woundmed 67.5% complete blocked by that

[Avalon-Proto]

I feel like AP rounds should have a lower chance to embed the less armored a person is. After all they are designed to punch through armor and keep going. But if it punches through a hardsuit first it should have higher embed chance

[sowelipililimute]

direction has no plans for the forseeable future to block delta-v content based on the development efforts of another codebase which we have historically had difficulties incorporating into ours in a beneficial manner. we will cross the woundmed bridge when we get to it.

[deltanedas]

it will be reverted or need great reworking to work with wounds instead of a bespoke system

[sowelipililimute]

it is not guaranteed that direction will give goobstation woundmed the greenlight

[ShepardToTheStars]

Would it make more sense to use a retractor or scalpel over a bonesaw? From all my experience with bullet wounds from popular media, typically you dont need to saw through bone to get a bullet out, just an incision (which had been done), something to hold it open, and forceps to grab the bullet.