From 5162c0413c137fc56b94b82d884aba914291d36c Mon Sep 17 00:00:00 2001
From: S34N <12197162+S34NW@users.noreply.github.com>
Date: Thu, 11 Aug 2022 15:46:22 +0100
Subject: [PATCH] Fixes queued smoothing items not being removed on del
 (#18776)

* fixes queued smoothing items not being removed on del

* undupes the code

* why DID it do this?
---
 code/__DEFINES/icon_smoothing.dm | 2 ++
 code/game/objects/structures.dm  | 4 ++--
 code/game/turfs/turf.dm          | 1 +
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/code/__DEFINES/icon_smoothing.dm b/code/__DEFINES/icon_smoothing.dm
index 5602d51d1cb..88f81aa6e7b 100644
--- a/code/__DEFINES/icon_smoothing.dm
+++ b/code/__DEFINES/icon_smoothing.dm
@@ -27,6 +27,8 @@ DEFINE_BITFIELD(smoothing_flags, list(
 
 #define QUEUE_SMOOTH_NEIGHBORS(thing_to_queue) for(var/neighbor in orange(1, thing_to_queue)) {var/atom/atom_neighbor = neighbor; QUEUE_SMOOTH(atom_neighbor)}
 
+#define REMOVE_FROM_SMOOTH_QUEUE(thing_to_remove) if(thing_to_remove.smoothing_flags & SMOOTH_QUEUED) {SSicon_smooth.remove_from_queues(thing_to_remove)}
+
 /**SMOOTHING GROUPS
  * Groups of things to smooth with.
  * * Contained in the `list/smoothing_groups` variable.
diff --git a/code/game/objects/structures.dm b/code/game/objects/structures.dm
index d49803292a2..89148867d72 100644
--- a/code/game/objects/structures.dm
+++ b/code/game/objects/structures.dm
@@ -30,8 +30,8 @@
 		GLOB.cameranet.updateVisibility(src)
 	if(smoothing_flags & (SMOOTH_CORNERS|SMOOTH_BITMASK))
 		var/turf/T = get_turf(src)
-		spawn(0)
-			QUEUE_SMOOTH_NEIGHBORS(T)
+		QUEUE_SMOOTH_NEIGHBORS(T)
+	REMOVE_FROM_SMOOTH_QUEUE(src)
 	return ..()
 
 /obj/structure/proc/climb_on()
diff --git a/code/game/turfs/turf.dm b/code/game/turfs/turf.dm
index f5af9303822..7c0bba95084 100644
--- a/code/game/turfs/turf.dm
+++ b/code/game/turfs/turf.dm
@@ -88,6 +88,7 @@
 		for(var/A in B.contents)
 			qdel(A)
 		return
+	REMOVE_FROM_SMOOTH_QUEUE(src)
 	// Adds the adjacent turfs to the current atmos processing
 	for(var/turf/simulated/T in atmos_adjacent_turfs)
 		SSair.add_to_active(T)