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/modules/power/singularity/narsie.dm

@@ -30,7 +30,7 @@
 	var/area/A = get_area(src)
 	if(A)
 		var/image/alert_overlay = image('icons/effects/effects.dmi', "ghostalertsie")
-		notify_ghosts("Nar-Sie has risen in \the [A.name]. Reach out to the Geometer to be given a new shell for your soul.", source = src, alert_overlay = alert_overlay, attack_not_jump = 1)
+		notify_ghosts("Nar-Sie has risen in \the [A.name]. Reach out to the Geometer to be given a new shell for your soul.", source = src, alert_overlay = alert_overlay, action=NOTIFY_ATTACK)
 
 	narsie_spawn_animation()
 

code/modules/power/singularity/singularity.dm

@@ -37,6 +37,7 @@
 	src.energy = starting_energy
 	..()
 	processing_objects.Add(src)
+	poi_list |= src
 	for(var/obj/machinery/power/singularity_beacon/singubeacon in world)
 		if(singubeacon.active)
 			target = singubeacon
@@ -45,6 +46,7 @@
 
 /obj/singularity/Destroy()
 	processing_objects.Remove(src)
+	poi_list.Remove(src)
 	singularities -= src
 	target = null
 	return ..()