Kneejerk: The Kneejerkening (#91342)

## About The Pull Request
OH BOY HERE I GO REDUCING MY GBP AGAIN
Adds a reflex hammer, used to test your kneejerk reflex. Makes it
printable from auto, med, and sci lathes, as with other basic medical
tools. It looks like this:

![reflexhammer](https://github.com/user-attachments/assets/5a965e17-9995-4092-ba29-a20e52880170)




(i stopped doing web edits are you happy)
## Why It's Good For The Game
This is a simple and useful way to measure brain health. Usually you'd
need either a rare toy, a null rod, or the one per map gavel. This makes
analog diagnosis easier and more fun!
## Changelog
🆑
add: Reflex Hammer, used to test your kneejerk reflex. Print one now,
from your local lathe!
/🆑

---------

Co-authored-by: ThrowawayUseless <notarealemail@emailservice.fake>

code/game/objects/items/reflex_hammer.dm

@@ -0,0 +1,21 @@
+/obj/item/reflexhammer
+	name = "reflex hammer"
+	desc = "A small plastic headed hammer, used to test for neurological damage."
+	icon = 'icons/obj/weapons/hammer.dmi'
+	icon_state = "reflex_hammer"
+	icon_angle = -135
+	force = 1
+	throwforce = 1
+	custom_materials = list(/datum/material/iron=SMALL_MATERIAL_AMOUNT*0.75, /datum/material/plastic=SMALL_MATERIAL_AMOUNT*0.5)
+	w_class = WEIGHT_CLASS_TINY
+	attack_verb_continuous = list("tests", "jerks", "bonks", "taps")
+	attack_verb_simple = list("test", "jerk", "bonk", "tap")
+
+/obj/item/reflexhammer/Initialize(mapload)
+	. = ..()
+	AddElement(/datum/element/kneejerk)
+
+/obj/item/reflexhammer/suicide_act(mob/living/user)
+	user.visible_message(span_suicide("[user] is beating [user.p_them()]self to death with [src]! Unfortunately, it's not a real hammer! It looks like [user.p_theyre()] trying to commit suicide!"))
+	playsound(loc, 'sound/items/gavel.ogg', 50, TRUE, -1)
+	return STAMINALOSS | SHAME

code/modules/research/designs/autolathe/medsci_designs.dm

@@ -11,6 +11,18 @@
 	)
 	departmental_flags = DEPARTMENT_BITFLAG_MEDICAL
 
+/datum/design/reflexhammer
+	name = "Reflex Hammer"
+	id = "reflex_hammer"
+	build_type = PROTOLATHE | AWAY_LATHE | AUTOLATHE
+	materials = list(/datum/material/iron=SMALL_MATERIAL_AMOUNT*0.75, /datum/material/plastic=SMALL_MATERIAL_AMOUNT*0.5)
+	build_path = /obj/item/reflexhammer
+	category = list(
+		RND_CATEGORY_INITIAL,
+		RND_CATEGORY_TOOLS + RND_SUBCATEGORY_TOOLS_MEDICAL
+	)
+	departmental_flags = DEPARTMENT_BITFLAG_MEDICAL | DEPARTMENT_BITFLAG_SCIENCE
+
 /datum/design/stethoscope
 	name = "Stethoscope"
 	id = "stethoscope"

code/modules/research/techweb/nodes/medbay_nodes.dm

@@ -30,6 +30,7 @@
 		"pillbottle",
 		"xlarge_beaker",
 		"jerrycan",
+		"reflex_hammer",
 	)
 	experiments_to_unlock = list(
 		/datum/experiment/autopsy/human,

tgstation.dme

@@ -2640,6 +2640,7 @@
 #include "code\game\objects\items\pneumaticCannon.dm"
 #include "code\game\objects\items\powerfist.dm"
 #include "code\game\objects\items\puzzle_pieces.dm"
+#include "code\game\objects\items\reflex_hammer.dm"
 #include "code\game\objects\items\religion.dm"
 #include "code\game\objects\items\rollertable_dock.dm"
 #include "code\game\objects\items\scrolls.dm"