Merge pull request #4134 from comma/gunlocker

Adds gun cabinets - special snowflake secure closets.

code/game/objects/structures/crates_lockers/closets/secure/guncabinet.dm

@@ -0,0 +1,53 @@
+/obj/structure/closet/secure_closet/guncabinet
+	name = "gun cabinet"
+	req_access = list(access_armory)
+	icon = 'icons/obj/guncabinet.dmi'
+	icon_state = "base"
+	icon_off ="base"
+	icon_broken ="base"
+	icon_locked ="base"
+	icon_closed ="base"
+	icon_opened = "base"
+
+/obj/structure/closet/secure_closet/guncabinet/New()
+	..()
+	update_icon()
+
+/obj/structure/closet/secure_closet/guncabinet/toggle()
+	..()
+	update_icon()
+
+/obj/structure/closet/secure_closet/guncabinet/update_icon()
+	overlays.Cut()
+	if(opened)
+		overlays += icon(icon,"door_open")
+	else
+		var/lazors = 0
+		var/shottas = 0
+		for (var/obj/item/weapon/gun/G in contents)
+			if (istype(G, /obj/item/weapon/gun/energy))
+				lazors++
+			if (istype(G, /obj/item/weapon/gun/projectile/))
+				shottas++
+		if (lazors || shottas)
+			for (var/i = 0 to 2)
+				var/image/gun = image(icon(src.icon))
+
+				if (lazors > 0 && (shottas <= 0 || prob(50)))
+					lazors--
+					gun.icon_state = "laser"
+				else if (shottas > 0)
+					shottas--
+					gun.icon_state = "projectile"
+
+				gun.pixel_x = i*4
+				overlays += gun
+
+		overlays += icon(src.icon,"door")
+
+		if(broken)
+			overlays += icon(src.icon,"broken")
+		else if (locked)
+			overlays += icon(src.icon,"locked")
+		else
+			overlays += icon(src.icon,"open")