[MIRROR] Splits projectiles into different files for readability (#5800)

* Splits projectiles into different files for readability

* Update tgstation.dme

* I love how the dme cleans itself up

code/modules/projectiles/projectile/reusable/_reusable.dm

@@ -0,0 +1,20 @@
+/obj/item/projectile/bullet/reusable
+	name = "reusable bullet"
+	desc = "How do you even reuse a bullet?"
+	var/ammo_type = /obj/item/ammo_casing/caseless
+	var/dropped = FALSE
+	impact_effect_type = null
+
+/obj/item/projectile/bullet/reusable/on_hit(atom/target, blocked = FALSE)
+	. = ..()
+	handle_drop()
+
+/obj/item/projectile/bullet/reusable/on_range()
+	handle_drop()
+	..()
+
+/obj/item/projectile/bullet/reusable/proc/handle_drop()
+	if(!dropped)
+		var/turf/T = get_turf(src)
+		new ammo_type(T)
+		dropped = TRUE

code/modules/projectiles/projectile/reusable/foam_dart.dm

@@ -0,0 +1,41 @@
+/obj/item/projectile/bullet/reusable/foam_dart
+	name = "foam dart"
+	desc = "I hope you're wearing eye protection."
+	damage = 0 // It's a damn toy.
+	damage_type = OXY
+	nodamage = 1
+	icon = 'icons/obj/guns/toy.dmi'
+	icon_state = "foamdart_proj"
+	ammo_type = /obj/item/ammo_casing/caseless/foam_dart
+	range = 10
+	var/modified = 0
+	var/obj/item/pen/pen = null
+
+/obj/item/projectile/bullet/reusable/foam_dart/handle_drop()
+	if(dropped)
+		return
+	var/turf/T = get_turf(src)
+	dropped = 1
+	var/obj/item/ammo_casing/caseless/foam_dart/newcasing = new ammo_type(T)
+	newcasing.modified = modified
+	var/obj/item/projectile/bullet/reusable/foam_dart/newdart = newcasing.BB
+	newdart.modified = modified
+	newdart.damage = damage
+	newdart.nodamage = nodamage
+	newdart.damage_type = damage_type
+	if(pen)
+		newdart.pen = pen
+		pen.forceMove(newdart)
+		pen = null
+	newdart.update_icon()
+
+
+/obj/item/projectile/bullet/reusable/foam_dart/Destroy()
+	pen = null
+	return ..()
+
+/obj/item/projectile/bullet/reusable/foam_dart/riot
+	name = "riot foam dart"
+	icon_state = "foamdart_riot_proj"
+	ammo_type = /obj/item/ammo_casing/caseless/foam_dart/riot
+	stamina = 25

code/modules/projectiles/projectile/reusable/magspear.dm

@@ -0,0 +1,6 @@
+/obj/item/projectile/bullet/reusable/magspear
+	name = "magnetic spear"
+	desc = "WHITE WHALE, HOLY GRAIL"
+	damage = 30 //takes 3 spears to kill a mega carp, one to kill a normal carp
+	icon_state = "magspear"
+	ammo_type = /obj/item/ammo_casing/caseless/magspear