minor deathmatch fixes (#91192)

## About The Pull Request
split personality may not roll if the target is in a deathmatch area
bolt of possession deals 25 brain damage if the target is in a
deathmatch area (8 hits for brain death)
removed a camera from the meta brig map
Disciple of Pete has 9 tile range signalers instead (that nobody uses
anyway lmao because you cant use them for minibombs or the other
grenades)

## Why It's Good For The Game

fixes #91171
fixes #90912
fixes #89212

## Changelog
🆑
fix: removed a camera from the deathmatch meta brig map, disciple of
pete has low-range signalers, deathmatch bolt of possession deals brain
damage instead, split personality may not roll in deathmatch
/🆑

_maps/minigame/deathmatch/meta_brig.dmm

@@ -27,10 +27,6 @@
 /area/space)
 "ao" = (
 /obj/structure/rack,
-/obj/machinery/camera/motion{
-	c_tag = "Armory - Internal";
-	dir = 4
-	},
 /obj/effect/turf_decal/tile/blue,
 /obj/effect/turf_decal/tile/blue{
 	dir = 8

code/datums/brain_damage/split_personality.dm

@@ -16,7 +16,7 @@
 
 /datum/brain_trauma/severe/split_personality/on_gain()
 	var/mob/living/brain_owner = owner
-	if(brain_owner.stat == DEAD || !GET_CLIENT(brain_owner)) //No use assigning people to a corpse or braindead
+	if(brain_owner.stat == DEAD || !GET_CLIENT(brain_owner) || istype(get_area(brain_owner), /area/deathmatch)) //No use assigning people to a corpse or braindead
 		return FALSE
 	. = ..()
 	make_backseats()

code/modules/assembly/signaler.dm

@@ -26,6 +26,8 @@
 	var/hearing_range = 1
 	/// String containing the last piece of logging data relating to when this signaller has received a signal.
 	var/last_receive_signal_log
+	/// Signal range, see /datum/radio_frequency/proc/post_signal
+	var/range = 0 //Everywhere
 
 /obj/item/assembly/signaler/suicide_act(mob/living/carbon/user)
 	user.visible_message(span_suicide("[user] eats \the [src]! If it is signaled, [user.p_they()] will die!"))
@@ -153,7 +155,7 @@
 	add_to_signaler_investigate_log(logging_data)
 
 	var/datum/signal/signal = new(list("code" = code), logging_data = logging_data)
-	radio_connection.post_signal(src, signal)
+	radio_connection.post_signal(src, signal, range = range)
 
 /obj/item/assembly/signaler/receive_signal(datum/signal/signal)
 	. = FALSE
@@ -203,3 +205,8 @@
 	if(ispAI(user))
 		return TRUE
 	. = ..()
+
+/obj/item/assembly/signaler/low_range
+	name = "low-power remote signaling device"
+	desc = "Used to remotely activate devices, within a small range of 9 tiles. Allows for syncing when using a secure signaler on another."
+	range = 9

code/modules/deathmatch/deathmatch_loadouts.dm

@@ -645,7 +645,7 @@
 	r_pocket = /obj/item/grenade/syndieminibomb
 	implants = list(/obj/item/implant/explosive/macro)
 	backpack_contents = list(
-		/obj/item/assembly/signaler = 10,
+		/obj/item/assembly/signaler/low_range = 10,
 	)
 
 /datum/outfit/deathmatch_loadout/tider

code/modules/projectiles/projectile/magic.dm

@@ -353,6 +353,10 @@
 /obj/projectile/magic/wipe/on_hit(mob/living/carbon/target, blocked = 0, pierce_hit)
 	. = ..()
 	if(iscarbon(target))
+		if(istype(get_area(target), /area/deathmatch))
+			target.adjustOrganLoss(ORGAN_SLOT_BRAIN, 25) // Roughly 8 hits to kill
+			target.visible_message(span_warning("[target] grips their head in pain!"))
+			return BULLET_ACT_HIT
 		for(var/x in target.get_traumas())//checks to see if the victim is already going through possession
 			if(istype(x, /datum/brain_trauma/special/imaginary_friend/trapped_owner))
 				target.visible_message(span_warning("[src] vanishes on contact with [target]!"))