Port Eris and Bay walls as optional mapping walls

code/game/turfs/simulated/wall_icon.dm

@@ -51,30 +51,30 @@
 	var/image/I
 
 	if(!density)
-		I = image('icons/turf/wall_masks.dmi', "[material.icon_base]fwall_open")
+		I = image(wall_masks, "[material.icon_base]fwall_open")
 		I.color = material.icon_colour
 		add_overlay(I)
 		return
 
 	for(var/i = 1 to 4)
-		I = image('icons/turf/wall_masks.dmi', "[material.icon_base][wall_connections[i]]", dir = 1<<(i-1))
+		I = image(wall_masks, "[material.icon_base][wall_connections[i]]", dir = 1<<(i-1))
 		I.color = material.icon_colour
 		add_overlay(I)
 
 	if(reinf_material)
 		if(construction_stage != null && construction_stage < 6)
-			I = image('icons/turf/wall_masks.dmi', "reinf_construct-[construction_stage]")
+			I = image(wall_masks, "reinf_construct-[construction_stage]")
 			I.color = reinf_material.icon_colour
 			add_overlay(I)
 		else
-			if("[reinf_material.icon_reinf]0" in cached_icon_states('icons/turf/wall_masks.dmi'))
+			if("[reinf_material.icon_reinf]0" in cached_icon_states(wall_masks))
 				// Directional icon
 				for(var/i = 1 to 4)
-					I = image('icons/turf/wall_masks.dmi', "[reinf_material.icon_reinf][wall_connections[i]]", dir = 1<<(i-1))
+					I = image(wall_masks, "[reinf_material.icon_reinf][wall_connections[i]]", dir = 1<<(i-1))
 					I.color = reinf_material.icon_colour
 					add_overlay(I)
-			else
-				I = image('icons/turf/wall_masks.dmi', reinf_material.icon_reinf)
+			else if("[reinf_material.icon_reinf]" in cached_icon_states(wall_masks))
+				I = image(wall_masks, reinf_material.icon_reinf)
 				I.color = reinf_material.icon_colour
 				add_overlay(I)
 

code/game/turfs/simulated/wall_types.dm

@@ -329,3 +329,38 @@
 
 /obj/structure/hull_corner/long_horiz/get_dirs_to_test()
 	return list(dir, turn(dir,90), turn(dir,-90))
+
+
+
+// Eris walls
+/turf/simulated/wall/eris
+	icon = 'icons/turf/wall_masks_eris.dmi'
+	icon_state = "generic"
+	wall_masks = 'icons/turf/wall_masks_eris.dmi'
+
+/turf/simulated/wall/eris/r_wall
+	icon_state = "rgeneric"
+/turf/simulated/wall/eris/r_wall/Initialize(mapload)
+	. = ..(mapload, "plasteel","plasteel")
+
+// Bay walls
+/turf/simulated/wall/bay
+	icon = 'icons/turf/wall_masks_bay.dmi'
+	icon_state = "generic"
+	wall_masks = 'icons/turf/wall_masks_bay.dmi'
+
+	var/stripe_color // Adds a colored stripe to the walls
+
+/turf/simulated/wall/bay/update_icon()
+	. = ..()
+	if(stripe_color)
+		var/image/I
+		for(var/i = 1 to 4)
+			I = image(wall_masks, "stripe[wall_connections[i]]", dir = 1<<(i-1))
+			I.color = stripe_color
+			add_overlay(I)
+
+/turf/simulated/wall/bay/r_wall
+	icon_state = "rgeneric"
+/turf/simulated/wall/bay/r_wall/Initialize(mapload)
+	. = ..(mapload, "plasteel","plasteel")

code/game/turfs/simulated/walls.dm

@@ -9,6 +9,7 @@
 	thermal_conductivity = WALL_HEAT_TRANSFER_COEFFICIENT
 	heat_capacity = 312500 //a little over 5 cm thick , 312500 for 1 m by 2.5 m by 0.25 m plasteel wall
 
+	var/icon/wall_masks = 'icons/turf/wall_masks.dmi'
 	var/damage = 0
 	var/damage_overlay = 0
 	var/global/damage_overlays[16]
@@ -20,6 +21,7 @@
 	var/last_state
 	var/construction_stage
 
+	// There's basically always going to be wall connections, making this lazy doesn't seem like it'd help much unless you wanted to make it bitflags instead.
 	var/list/wall_connections = list("0", "0", "0", "0")
 
 // Walls always hide the stuff below them.