various map related features (#18510)

* various map related features

* add icons

* tick da file

* adds no docking codes var

* cetus plaques

* switch to weakref

* annihilate single letter refs and such

* fixes after testing

* reverse an oopsy

---------

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/game/objects/structures/dummystairs.dm

@@ -0,0 +1,17 @@
+/obj/structure/dummystairs
+	name = "stairs"
+	desc = "A short set of stairs"
+	icon = 'icons/obj/dummystairs.dmi'
+	icon_state = "stair"
+	anchored = TRUE
+	density = FALSE
+	layer = 2.5
+
+/obj/structure/dummystairs/bronzeledge
+	icon_state = "stair_bronze"
+
+/obj/structure/dummystairs/greyledge
+	icon_state = "stair_grey"
+
+/obj/structure/dummystairs/hazardledge
+	icon_state = "stair_hazard"

code/game/objects/structures/railing.dm

@@ -243,3 +243,14 @@
 			qdel(src)
 			return
 	return
+
+/obj/structure/railing/overhang/hazard
+	name = "hazardous ledge"
+	desc = "An overhang made of a steel. It's painted with vibrant hazard markings."
+	icon = 'icons/obj/railing.dmi'
+	icon_modifier = "hazard_"
+	icon_state = "hazard_railing0"
+
+/obj/structure/railing/overhang/hazard/nanite
+	icon_modifier = "inactive_"
+	icon_state = "inactive_railing0"