[MIRROR] Adds a new heavy weight space pirate variant: The space IRS! [MDB IGNORE] (#22365)

* Adds a new heavy weight space pirate variant: The space IRS!

* Fix merge conflicts, UpdatePaths

* Fixes some path changes

* Updates icon files, adds a new sprite for breacher slug box illustration

* Removes some skyrat edits and puts them in modular overrides instead

---------

Co-authored-by: Singul0 <127663818+Singul0@users.noreply.github.com>
Co-authored-by: Giz <vinylspiders@gmail.com>

code/game/objects/items/storage/boxes/security_boxes.dm

@@ -238,6 +238,16 @@
 	for(var/i in 1 to 6)
 		new /obj/item/ammo_casing/shotgun/beanbag(src)
 
+/obj/item/storage/box/breacherslug
+	name = "box of breaching shotgun shells"
+	desc = "A box full of breaching slugs, designed for rapid entry, not very effective against anything else."
+	icon_state = "breacher_box"
+	illustration = null
+
+/obj/item/storage/box/breacherslug/PopulateContents()
+	for(var/i in 1 to 7)
+		new /obj/item/ammo_casing/shotgun/breacher(src)
+
 /obj/item/storage/box/emptysandbags
 	name = "box of empty sandbags"
 	illustration = "sandbag"

code/game/objects/items/storage/toolbox.dm

@@ -225,10 +225,9 @@
 	new /obj/item/stack/pipe_cleaner_coil/white(src)
 	new /obj/item/stack/pipe_cleaner_coil/brown(src)
 
-/obj/item/storage/toolbox/a762
-	name = "7.62mm ammo box (Surplus?)"
-	desc = "It contains a few clips. Goddamn, this thing smells awful. \
-		Has this been sitting in a warehouse for the last several centuries?"
+/obj/item/storage/toolbox/ammobox
+	name = "ammo canister"
+	desc = "A metal canister designed to hold ammunition"
 	icon_state = "ammobox"
 	inhand_icon_state = "ammobox"
 	lefthand_file = 'icons/mob/inhands/equipment/toolbox_lefthand.dmi'
@@ -236,15 +235,30 @@
 	has_latches = FALSE
 	drop_sound = 'sound/items/handling/ammobox_drop.ogg'
 	pickup_sound = 'sound/items/handling/ammobox_pickup.ogg'
-	var/ammo_to_spawn = /obj/item/ammo_box/a762
+	var/ammo_to_spawn
 
-/obj/item/storage/toolbox/a762/PopulateContents()
-	for(var/i in 1 to 6)
-		new ammo_to_spawn(src)
+/obj/item/storage/toolbox/ammobox/PopulateContents()
+	if(!isnull(ammo_to_spawn))
+		for(var/i in 1 to 6)
+			new ammo_to_spawn(src)
 
-/obj/item/storage/toolbox/a762/surplus
+/obj/item/storage/toolbox/ammobox/a762
+	name = "7.62mm ammo box (Surplus?)"
+	desc = "It contains a few clips. Goddamn, this thing smells awful. \
+		Has this been sitting in a warehouse for the last several centuries?"
+	ammo_to_spawn = /obj/item/ammo_box/a762
+
+/obj/item/storage/toolbox/ammobox/a762/surplus
 	ammo_to_spawn = /obj/item/ammo_box/a762/surplus
 
+/obj/item/storage/toolbox/ammobox/wt550m9
+	name = "4.6x30mm ammo box"
+	ammo_to_spawn = /obj/item/ammo_box/magazine/wt550m9
+
+/obj/item/storage/toolbox/ammobox/wt550m9ap
+	name = "4.6x30mm AP ammo box"
+	ammo_to_spawn = /obj/item/ammo_box/magazine/wt550m9/wtap
+
 /obj/item/storage/toolbox/maint_kit
 	name = "gun maintenance kit"
 	desc = "It contains some gun maintenance supplies"

code/game/objects/obj_defense.dm

@@ -28,7 +28,7 @@
 	playsound(src, P.hitsound, 50, TRUE)
 	var/damage
 	if(!QDELETED(src)) //Bullet on_hit effect might have already destroyed this object
-		damage = take_damage(P.damage, P.damage_type, P.armor_flag, 0, turn(P.dir, 180), P.armour_penetration)
+		damage = take_damage(P.damage * P.demolition_mod, P.damage_type, P.armor_flag, 0, turn(P.dir, 180), P.armour_penetration)
 	if(P.suppressed != SUPPRESSED_VERY)
 		visible_message(span_danger("[src] is hit by \a [P][damage ? "" : ", without leaving a mark"]!"), null, null, COMBAT_MESSAGE_RANGE)
 

code/game/objects/structures/guncase.dm

@@ -133,3 +133,8 @@
 	icon_state = "ecase"
 	case_type = "egun"
 	gun_category = /obj/item/gun/energy/e_gun
+
+/obj/structure/guncase/wt550
+	name = "WT-550 gun locker"
+	desc = "A locker that holds WT-550 rifles."
+	case_type = "wt550"