Another few random fixes

code/controllers/subsystem/explosion.dm

@@ -615,7 +615,7 @@ SUBSYSTEM_DEF(explosions)
 			var/throw_dir = L[2]
 			var/max_range = L[3]
 			for(var/atom/movable/A in T)
-				if(!A.anchored && A.move_resist != INFINITY)
+				if(!QDELETED(A) && !A.anchored && A.move_resist != INFINITY) //NSV13 - also check for QDELETED
 					var/atom_throw_range = rand(throw_range, max_range)
 					var/turf/throw_at = get_ranged_target_turf(A, throw_dir, atom_throw_range)
 					A.throw_at(throw_at, atom_throw_range, EXPLOSION_THROW_SPEED, quickstart = FALSE)

code/modules/mob/mob_helpers.dm

@@ -467,7 +467,7 @@
 
 ///Is the passed in mob an admin ghost
 /proc/IsAdminGhost(var/mob/user)
-	if(!user)		//Are they a mob? Auto interface updates call this with a null src
+	if(!user || !ismob(user))		//Are they a mob? Auto interface updates call this with a null src //NSV13 - you DO know sending the wrong type is NOT equal to null, RIGHT?
 		return
 	if(!user.client) // Do they have a client?
 		return

nsv13/code/game/machinery/computer/_ship.dm

@@ -86,10 +86,12 @@ GLOBAL_LIST_INIT(computer_beeps, list('nsv13/sound/effects/computer/beep.ogg','n
 	return ..()
 
 /obj/machinery/computer/ship/Destroy()
-	. = ..()
 	for(var/mob/living/M in ui_users)
 		ui_close(M)
 		linked?.stop_piloting(M)
+	linked = null
+	ui_users = null //drop list to the GC
+	return ..()
 
 //Viewscreens for regular crew to watch combat
 /obj/machinery/computer/ship/viewscreen

nsv13/code/game/machinery/computer/helm.dm

@@ -10,7 +10,8 @@
 	req_one_access = list(ACCESS_SYNDICATE)
 
 /obj/machinery/computer/ship/helm/Destroy()
-	linked?.helm = null
+	if(linked && linked.helm == src)
+		linked.helm = null
 	return ..()
 
 /obj/machinery/computer/ship/helm/set_position(obj/structure/overmap/OM)

nsv13/code/game/machinery/computer/tactical.dm

@@ -7,7 +7,8 @@
 	circuit = /obj/item/circuitboard/computer/ship/tactical_computer
 
 /obj/machinery/computer/ship/tactical/Destroy()
-	linked?.tactical = null
+	if(linked && linked.tactical == src)
+		linked.tactical = null
 	return ..()
 
 /obj/machinery/computer/ship/tactical/ui_interact(mob/user, datum/tgui/ui)

nsv13/code/modules/overmap/overmap.dm

@@ -93,7 +93,6 @@
 	var/backward_maxthrust = 3
 	var/side_maxthrust = 1
 	var/mass = MASS_SMALL //The "mass" variable will scale the movespeed according to how large the ship is.
-	var/landing_gear = FALSE //Allows you to move in atmos without scraping the hell outta your ship
 
 	var/bump_impulse = 0.6
 	var/bounce_factor = 0.7 // how much of our velocity to keep on collision
@@ -118,8 +117,18 @@
 	var/list/beacons_in_ship = list()
 
 	// Controlling equipment
-	var/obj/machinery/computer/ship/helm //Relay beeping noises when we act
-	var/obj/machinery/computer/ship/tactical
+
+	/*
+	These are probably more okay not being lists since only one person can control either of these two slots at a time.
+	*/
+	var/obj/machinery/computer/ship/helm/helm //Relay beeping noises when we act
+	var/obj/machinery/computer/ship/tactical/tactical
+
+	/*
+		|| THIS SHOULD BE A LIST, there could be a billion dradises that can keep fighting for which one is considered the ship dradis any time someone interacts with one!!!
+		|| When you change this, also change the reference cleaning on del for this var from being on the dradis to being on the ship listening for the console's QDEL signal.
+		\/ I'm not feeling like refactoring that right now though. Maybe in the future. -Delta
+	*/
 	var/obj/machinery/computer/ship/dradis/dradis //So that pilots can check the radar easily
 
 	// Ship weapons

nsv13/code/modules/overmap/physics.dm

@@ -624,6 +624,9 @@ This proc is to be used when someone gets stuck in an overmap ship, gauss, WHATE
 		if(isovermap(proj.homing_target))
 			var/obj/structure/overmap/overmap_target = proj.homing_target
 			overmap_target.on_missile_lock(src, proj)
+
+	LAZYINITLIST(proj.impacted) //The spawn call after this might be causing some issues so the list should exist before async actions.
+
 	spawn()
 		proj.preparePixelProjectileOvermap(target, src, null, round((rand() - 0.5) * proj.spread), lateral=lateral)
 		proj.fire()

nsv13/code/modules/overmap/radar.dm

@@ -105,6 +105,11 @@ Called by add_sensor_profile_penalty if remove_in is used.
 	if(beacon)
 		. += "<span class='sciradio'>It's currently linked to [beacon] in [get_area(beacon)]. You can use a multitool to switch whether it delivers here, or to your cargo bay.</span>"
 
+/obj/machinery/computer/ship/dradis/Destroy()
+	if(linked && linked.dradis == src)
+		linked.dradis = null //clean ref. Usually the ship would register this deleting and handle the del there instead, but overmap reference code is so decentralized I am not refactoring that right now.
+	return ..()
+
 /obj/machinery/computer/ship/dradis/attackby(obj/item/W, mob/living/user, params)
 	if(istype(W, /obj/item/supplypod_beacon))
 		var/obj/item/supplypod_beacon/sb = W