Icon smoothing and icon update refactor (#17569)

* Atomization

* asdfsadf

* sdfas

---------

Co-authored-by: FluffyGhost <FluffyGhost>

code/game/objects/items/weapons/syndie.dm

@@ -13,9 +13,15 @@
 	desc = "A small wrapped package."
 	w_class = ITEMSIZE_NORMAL
 
-	var/power = 1  /*Size of the explosion.*/
+	///Size of the explosion
+	var/power = 1
+
+	///Used for the icon
 	var/size = "small"  /*Used for the icon, this one will make c-4small_0 for the off state.*/
 
+	///The detonator that makes this C4 charge explode
+	var/obj/item/syndie/c4detonator/detonator = null
+
 /obj/item/syndie/c4explosive/heavy
 	icon_state = "c-4large_0"
 	item_state = "c-4large"
@@ -23,15 +29,21 @@
 	power = 2
 	size = "large"
 
-/obj/item/syndie/c4explosive/New()
+/obj/item/syndie/c4explosive/Initialize()
+	. = ..()
+
 	var/K = rand(1,2000)
 	K = md5(num2text(K)+name)
 	K = copytext(K,1,7)
 	src.desc += "\n You see [K] engraved on \the [src]."
-	var/obj/item/syndie/c4detonator/detonator = new(src.loc)
+	detonator = new(src.loc)
 	detonator.desc += "\n You see [K] engraved on the lighter."
 	detonator.bomb = src
 
+/obj/item/syndie/c4explosive/Destroy()
+	. = ..()
+	QDEL_NULL(detonator)
+
 /obj/item/syndie/c4explosive/proc/detonate()
 	icon_state = "c-4[size]_1"
 	spawn(50)
@@ -60,6 +72,10 @@
 	var/obj/item/syndie/c4explosive/bomb
 	var/pr_open = 0  /*Is the "What do you want to do?" prompt open?*/
 
+/obj/item/syndie/c4detonator/Destroy()
+	bomb = null
+	. = ..()
+
 /obj/item/syndie/c4detonator/attack_self(mob/user as mob)
 	switch(src.icon_state)
 		if("c-4detonator_0")

code/game/objects/structures.dm

@@ -15,11 +15,27 @@
 
 	var/slowdown = 0 //amount that pulling mobs have their movement delayed by
 
+/obj/structure/Initialize(mapload)
+	. = ..()
+	if(!isnull(material) && !istype(material))
+		material = SSmaterials.get_material_by_name(material)
+	if (!mapload)
+		updateVisibility(src)	// No point checking this before visualnet initializes.
+	if(climbable)
+		verbs += /obj/structure/proc/climb_on
+	if (smoothing_flags)
+		SSicon_smooth.add_to_queue(src)
+		SSicon_smooth.add_to_queue_neighbors(src)
+
 /obj/structure/Destroy()
 	if(parts)
 		new parts(loc)
 	if (smoothing_flags)
+		SSicon_smooth.remove_from_queues(src)
 		SSicon_smooth.add_to_queue_neighbors(src)
+
+	climbers = null
+
 	return ..()
 
 /obj/structure/attack_hand(mob/user)
@@ -65,18 +81,6 @@
 	. = ..()
 	bullet_ping(P)
 
-/obj/structure/Initialize(mapload)
-	. = ..()
-	if(!isnull(material) && !istype(material))
-		material = SSmaterials.get_material_by_name(material)
-	if (!mapload)
-		updateVisibility(src)	// No point checking this before visualnet initializes.
-	if(climbable)
-		verbs += /obj/structure/proc/climb_on
-	if (smoothing_flags)
-		SSicon_smooth.add_to_queue(src)
-		SSicon_smooth.add_to_queue_neighbors(src)
-
 /obj/structure/proc/climb_on()
 
 	set name = "Climb structure"