Widescreen lobby art (#21521)

* wide_art

* state_swap

* centralised-tweaks

* better code

* sdmm2 moment

* Update code/game/turfs/simulated/walls_indestructible.dm

_maps/map_files/generic/centcomm.dmm

@@ -10,7 +10,7 @@
 /area/ninja/outpost)
 "ad" = (
 /obj/effect/landmark/newplayer_start,
-/turf/simulated/floor/plating,
+/turf/simulated/wall/indestructible/splashscreen,
 /area/start)
 "ae" = (
 /turf/simulated/wall/indestructible/fakeglass,
@@ -61,9 +61,6 @@
 	icon_state = "cult"
 	},
 /area/holodeck/source_theatre)
-"am" = (
-/turf/simulated/wall/indestructible/splashscreen,
-/area/start)
 "an" = (
 /obj/structure/window/reinforced{
 	dir = 4
@@ -4610,7 +4607,7 @@
 /area/centcom/specops)
 "qf" = (
 /turf/simulated/wall/r_wall,
-/area/space)
+/area/start)
 "qg" = (
 /obj/item/twohanded/required/kirbyplants,
 /obj/item/storage/secure/safe{
@@ -13998,7 +13995,7 @@ rE
 rE
 rE
 rE
-am
+rE
 aN
 aN
 aN

code/controllers/subsystem/non_firing/SStitlescreen.dm

@@ -32,3 +32,6 @@ SUBSYSTEM_DEF(title)
 
 		for(var/turf/simulated/wall/indestructible/splashscreen/splash in world)
 			splash.icon = icon
+			// Below operations are needed to centrally place the new splashscreen on the lobby area
+			splash.pixel_x = -((icon.Width() - world.icon_size) / 2)
+			splash.pixel_y = -((icon.Height() - world.icon_size) / 2)

code/game/turfs/simulated/walls_indestructible.dm

@@ -110,6 +110,9 @@
 	icon_state = ""
 	layer = FLY_LAYER
 	flags = NO_SCREENTIPS
+	// Pixel shifts below are needed to centrally position the black placeholder icon within the start area at compile-time. This is overridden when a "real" lobby art image is chosen by SStitlescreen
+	pixel_x = -288
+	pixel_y = -224
 
 /turf/simulated/wall/indestructible/uranium
 	icon = 'icons/turf/walls/uranium_wall.dmi'