the mime's force wall is now destructible (#20399)

* the mime's forcefield is now destructable

* semi-invisible

* Update code/game/objects/effects/forcefields.dm

Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>

* this should be fine, if this breaks we'll know quickly

Co-authored-by: Farie82 <farie82@users.noreply.github.com>

---------

Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>
Co-authored-by: Farie82 <farie82@users.noreply.github.com>

code/datums/spells/mime.dm

@@ -3,7 +3,7 @@
 	desc = "The mime's performance transmutates into physical reality."
 	school = "mime"
 	panel = "Mime"
-	summon_type = list(/obj/effect/forcefield/mime)
+	summon_type = list(/obj/structure/forcefield/mime)
 	invocation_type = "emote"
 	invocation_emote_self = "<span class='notice'>You form a wall in front of yourself.</span>"
 	summon_lifespan = 20 SECONDS

code/game/objects/effects/forcefields.dm

@@ -29,12 +29,38 @@
 
 ///////////Mimewalls///////////
 
-/obj/effect/forcefield/mime
-	icon_state = "empty"
+/obj/structure/forcefield
+	name = "ain't supposed to see this"
+	desc = "file a github report if you do!"
+	icon = 'icons/effects/effects.dmi'
+	density = TRUE
+	anchored = TRUE
+	var/blocks_atmos = TRUE
+
+/obj/structure/forcefield/Initialize(mapload)
+	. = ..()
+	if(blocks_atmos)
+		air_update_turf(TRUE)
+
+/obj/structure/forcefield/Destroy()
+	if(blocks_atmos)
+		blocks_atmos = FALSE
+		air_update_turf(TRUE)
+	return ..()
+
+/obj/structure/forcefield/CanAtmosPass(turf/T)
+	return !blocks_atmos
+
+/obj/structure/forcefield/mime
+	icon = 'icons/effects/effects.dmi'
+	icon_state = "5"
 	name = "invisible wall"
+	alpha = 1
 	desc = "You have a bad feeling about this."
+	max_integrity = 80
 
 /obj/effect/forcefield/mime/advanced
+	icon_state = "empty"
 	name = "invisible blockade"
 	desc = "You might be here a while."
 	lifetime = 60 SECONDS