Landmarks works (#19006)

Fixed some landmarks harddels.
Refactored various landmarks in their own subtype instead of using a
name-based switch system.

code/modules/maps/helper_landmarks.dm

@@ -7,16 +7,20 @@
 	name = "clear turf"
 	icon = 'icons/effects/landmarks.dmi'
 	icon_state = "clear"
-	delete_me = TRUE
 
 /obj/effect/landmark/clear/Initialize()
+	..()
+	return INITIALIZE_HINT_LATELOAD
+
+/obj/effect/landmark/clear/LateInitialize()
 	var/turf/simulated/wall/W = get_turf(src)
 	if(istype(W))
 		W.dismantle_wall(TRUE, TRUE)
 	var/turf/simulated/mineral/M = W
 	if(istype(M))
 		M.GetDrilled()
-	. = ..()
+
+	qdel(src) //Our job here is done
 
 //Applies fire act to the turf
 /obj/effect/landmark/scorcher
@@ -26,7 +30,12 @@
 	var/temp = T0C + 3000
 
 /obj/effect/landmark/scorcher/Initialize()
+	..()
+	return INITIALIZE_HINT_LATELOAD //This assures that everything under the marker has loaded before burning it
+
+/obj/effect/landmark/scorcher/LateInitialize()
 	var/turf/simulated/T = get_turf(src)
 	if(istype(T))
 		T.fire_act(temp)
-	. = ..()
+
+	qdel(src) //Our job here is done