Field of Vision component. (#12075)

* Hopeless WIP for vision cones.

* Core component and hooks done

* Removing clutter.

* linter bashing me for using statements as args.

* Ok.

* continue

* bring back the macro

* Configs and openspace filter.

* Chat plane, reset perspective signal, mechs/vehicles cases, machineries.

* view, viewers and spoopy ghosts.

* Renamed component, admin fun button and snowflakes robots.

* Whoopsie.

* Yikes

* test merge tweak.

* radial yaketi sax.

* Fixed tgui UIs, some messages not displayed to the target.

* Documentation and a little bugfix.

* Pulling QoL, seventh plane made in this PR.

* Fix.

* Tweaks and improvements.

* Update randomverbs.dm

code/game/objects/structures/crates_lockers/closets/cardboardbox.dm

@@ -24,6 +24,7 @@
 	move_delay = TRUE
 	var/oldloc = loc
 	step(src, direction)
+	user.setDir(direction)
 	if(oldloc != loc)
 		addtimer(CALLBACK(src, .proc/ResetMoveDelay), (use_mob_movespeed ? user.movement_delay() : CONFIG_GET(number/movedelay/walk_delay)) * move_speed_multiplier)
 	else
@@ -42,7 +43,7 @@
 			Snake = L
 			break
 		if(Snake)
-			alerted = viewers(7,src)
+			alerted = get_actual_viewers(world.view,src)
 	..()
 	if(LAZYLEN(alerted))
 		egged = world.time + SNAKE_SPAM_TICKS

code/game/objects/structures/extinguisher.dm

@@ -3,6 +3,7 @@
 	desc = "A small wall mounted cabinet designed to hold a fire extinguisher."
 	icon = 'icons/obj/wallmounts.dmi'
 	icon_state = "extinguisher_closed"
+	plane = ABOVE_WALL_PLANE
 	anchored = TRUE
 	density = FALSE
 	max_integrity = 200

code/game/objects/structures/false_walls.dm

@@ -7,6 +7,7 @@
 	anchored = TRUE
 	icon = 'icons/turf/walls/wall.dmi'
 	icon_state = "wall"
+	plane = WALL_PLANE
 	layer = LOW_OBJ_LAYER
 	density = TRUE
 	opacity = 1

code/game/objects/structures/fireaxe.dm

@@ -3,6 +3,7 @@
 	desc = "There is a small label that reads \"For Emergency use only\" along with details for safe use of the axe. As if."
 	icon = 'icons/obj/wallmounts.dmi'
 	icon_state = "fireaxe"
+	plane = ABOVE_WALL_PLANE
 	anchored = TRUE
 	density = FALSE
 	armor = list("melee" = 50, "bullet" = 20, "laser" = 0, "energy" = 100, "bomb" = 10, "bio" = 100, "rad" = 100, "fire" = 90, "acid" = 50)

code/game/objects/structures/guillotine.dm

@@ -130,7 +130,7 @@
 			// The crowd is pleased
 			// The delay is to making large crowds have a longer laster applause
 			var/delay_offset = 0
-			for(var/mob/M in viewers(src, 7))
+			for(var/mob/M in get_actual_viewers(world.view, src))
 				var/mob/living/carbon/human/C = M
 				if (ishuman(M))
 					addtimer(CALLBACK(C, /mob/.proc/emote, "clap"), delay_offset * 0.3)

code/game/objects/structures/mirror.dm

@@ -4,6 +4,7 @@
 	desc = "Mirror mirror on the wall, who's the most robust of them all?"
 	icon = 'icons/obj/watercloset.dmi'
 	icon_state = "mirror"
+	plane = ABOVE_WALL_PLANE
 	density = FALSE
 	anchored = TRUE
 	max_integrity = 200

code/game/objects/structures/noticeboard.dm

@@ -3,6 +3,7 @@
 	desc = "A board for pinning important notices upon."
 	icon = 'icons/obj/stationobjs.dmi'
 	icon_state = "nboard00"
+	plane = ABOVE_WALL_PLANE
 	density = FALSE
 	anchored = TRUE
 	max_integrity = 150

code/game/objects/structures/signs/_signs.dm

@@ -3,6 +3,7 @@
 	anchored = TRUE
 	opacity = 0
 	density = FALSE
+	plane = ABOVE_WALL_PLANE
 	layer = SIGN_LAYER
 	max_integrity = 100
 	armor = list("melee" = 50, "bullet" = 0, "laser" = 0, "energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 50, "acid" = 50)