Lay groundwork for megafauna, and add Ashdragon.

Includes a refactor for gun turrets (merged into portable turrets), hostile simple_animal behaviour, spells (sounds have been added) and poi_list items.

code/game/objects/effects/anomalies.dm

@@ -18,6 +18,11 @@
 
 	var/new_frequency = sanitize_frequency(rand(PUBLIC_LOW_FREQ, PUBLIC_HIGH_FREQ))
 	aSignal.set_frequency(new_frequency)
+	poi_list |= src
+	
+/obj/effect/anomaly/Destroy()
+	poi_list.Remove(src)
+	return ..()
 
 /obj/effect/anomaly/proc/anomalyEffect()
 	if(prob(50))

code/game/objects/effects/landmarks.dm

@@ -262,3 +262,17 @@
 	new /obj/item/clothing/mask/gas/sexymime(src.loc)
 	new /obj/item/clothing/under/sexymime(src.loc)
 	qdel(src)
+
+/obj/effect/landmark/ruin
+	var/datum/map_template/ruin/ruin_template
+
+/obj/effect/landmark/ruin/New(loc, my_ruin_template)
+	name = "ruin_[ruin_landmarks.len + 1]"
+	..(loc)
+	ruin_template = my_ruin_template
+	ruin_landmarks |= src
+
+/obj/effect/landmark/ruin/Destroy()
+	ruin_landmarks -= src
+	ruin_template = null
+	. = ..()

code/game/objects/effects/overlays.dm

@@ -1,4 +1,3 @@
-
 /obj/effect/overlay
 	name = "overlay"
 	unacidable = 1
@@ -17,8 +16,8 @@
 	var/tmp/atom/BeamSource
 	New()
 		..()
-		spawn(10) qdel(src)
-
+		spawn(10) 
+			qdel(src)
 
 /obj/effect/overlay/temp
 	anchored = 1
@@ -30,6 +29,9 @@
 /obj/effect/overlay/temp/New()
 	if(randomdir)
 		dir = pick(cardinal)
+		
+	flick("[icon_state]", src) //Because we might be pulling it from a pool, flick whatever icon it uses so it starts at the start of the icon's animation.
+
 	spawn(duration)
 		qdel(src)