It works!

Everything works now.

code/game/objects/items/stacks/sheets/sheet_types.dm

@@ -33,6 +33,12 @@ GLOBAL_LIST_INIT(metal_recipes, list ( \
 		new /datum/stack_recipe("sofa (corner)", /obj/structure/chair/sofa/corner, one_per_turf = TRUE, on_floor = TRUE), \
 		)), \
 	//END OF CIT CHANGES
+	new/datum/stack_recipe_list("fancy sofas", list( \
+		new /datum/stack_recipe("sofa (middle)", /obj/structure/chair/corp_sofa, one_per_turf = TRUE, on_floor = TRUE), \
+		new /datum/stack_recipe("sofa (left)", /obj/structure/chair/corp_sofa/left, one_per_turf = TRUE, on_floor = TRUE), \
+		new /datum/stack_recipe("sofa (right)", /obj/structure/chair/corp_sofa/right, one_per_turf = TRUE, on_floor = TRUE), \
+		new /datum/stack_recipe("sofa (corner)", /obj/structure/chair/corp_sofa/corner, one_per_turf = TRUE, on_floor = TRUE), \
+		)), \
 	null, \
 	new/datum/stack_recipe_list("office chairs", list( \
 		new/datum/stack_recipe("dark office chair", /obj/structure/chair/office/dark, 5, one_per_turf = TRUE, on_floor = TRUE), \
@@ -98,6 +104,21 @@ GLOBAL_LIST_INIT(metal_recipes, list ( \
 	new/datum/stack_recipe("extinguisher cabinet frame", /obj/item/wallframe/extinguisher_cabinet, 2), \
 	new/datum/stack_recipe("button frame", /obj/item/wallframe/button, 1), \
 	null, \
+	new /datum/stack_recipe_list("chess pieces", list( \
+		new /datum/stack_recipe("White Pawn", /obj/structure/chess/WhitePawn, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("White Rook", /obj/structure/chess/WhiteRook, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("White Knight", /obj/structure/chess/WhiteKnight, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("White Bishop", /obj/structure/chess/WhiteBishop, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("White Queen", /obj/structure/chess/WhiteQueen, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("White King", /obj/structure/chess/WhiteKing, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("Black Pawn", /obj/structure/chess/BlackPawn, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("Black Rook", /obj/structure/chess/BlackRook, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("Black Knight", /obj/structure/chess/BlackKnight, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("Black Bishop", /obj/structure/chess/BlackBishop, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("Black Queen", /obj/structure/chess/BlackQueen, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+		new /datum/stack_recipe("Black King", /obj/structure/chess/BlackKing, 2, time = 10, one_per_turf = 1, on_floor = 1), \
+	)), \
+	null, \
 	new/datum/stack_recipe("iron door", /obj/structure/mineral_door/iron, 20, one_per_turf = TRUE, on_floor = TRUE), \
 	new/datum/stack_recipe("floodlight frame", /obj/structure/floodlight_frame, 5, one_per_turf = TRUE, on_floor = TRUE), \
 ))
@@ -349,6 +370,8 @@ GLOBAL_LIST_INIT(cloth_recipes, list ( \
 	new/datum/stack_recipe("black gloves", /obj/item/clothing/gloves/color/black, 3), \
 	null, \
 	new/datum/stack_recipe("blindfold", /obj/item/clothing/glasses/sunglasses/blindfold, 2), \
+	null, \
+	new /datum/stack_recipe("shower curtain", /obj/structure/curtain, 10, time = 10, one_per_turf = 1, on_floor = 1), \
 	))
 
 /obj/item/stack/sheet/cloth

code/game/objects/structures/chess.dm

@@ -0,0 +1,76 @@
+/obj/structure/chess
+	anchored = FALSE
+	density = FALSE
+	icon = 'icons/obj/chess.dmi'
+	icon_state = "singularity_s1"
+	name = "Singularity"
+	desc = "You've just been pranked by the Syndicate Chess Grandmaster! Report this to CentCom."
+	max_integrity = 100
+
+/obj/structure/chess/wrench_act(mob/user, obj/item/tool)
+	to_chat(user, "<span class='notice'>You take apart the chess piece.</span>")
+	var/obj/item/stack/sheet/metal/M = new (drop_location(), 2)
+	M.add_fingerprint(user)
+	tool.play_tool_sound(src)
+	qdel(src)
+	return TRUE
+
+/obj/structure/chess/WhitePawn
+	name = "\improper White Pawn"
+	desc = "A white pawn chess piece. Get accused of cheating when executing a sick En Passant."
+	icon_state = "white_pawn"
+
+/obj/structure/chess/WhiteRook
+	name = "\improper White Rook"
+	desc = "A white rook chess piece. Also known as a castle. Can move any number of tiles in a straight line. It has a special move called castling."
+	icon_state = "white_rook"
+
+/obj/structure/chess/WhiteKnight
+	name = "\improper White Knight"
+	desc = "A white knight chess piece. Hah. It can hop over other pieces, moving in L shapes."
+	icon_state = "white_knight"
+
+/obj/structure/chess/WhiteBishop
+	name = "\improper White Bishop"
+	desc = "A white bishop chess piece. It can move any number of tiles in a diagonal line."
+	icon_state = "white_bishop"
+
+/obj/structure/chess/WhiteQueen
+	name = "\improper White Queen"
+	desc = "A white queen chess piece. It can move any number of tiles in diagonal and straight lines."
+	icon_state = "white_queen"
+
+/obj/structure/chess/WhiteKing
+	name = "\improper White King"
+	desc = "A white king chess piece. It can move any tile in one direction."
+	icon_state = "white_king"
+
+/obj/structure/chess/BlackPawn
+	name = "\improper Black Pawn"
+	desc = "A black pawn chess piece. Get accused of cheating when executing a sick En Passant."
+	icon_state = "black_pawn"
+
+/obj/structure/chess/BlackRook
+	name = "\improper Black Rook"
+	desc = "A black rook chess piece. Also known as a castle. Can move any number of tiles in a straight line. It has a special move called castling."
+	icon_state = "black_rook"
+
+/obj/structure/chess/BlackKnight
+	name = "\improper Black Knight"
+	desc = "A black knight chess piece. It can hop over other pieces, moving in L shapes."
+	icon_state = "black_knight"
+
+/obj/structure/chess/BlackBishop
+	name = "\improper Black Bishop"
+	desc = "A black bishop chess piece. It can move any number of tiles in a diagonal line."
+	icon_state = "black_bishop"
+
+/obj/structure/chess/BlackQueen
+	name = "\improper Black Queen"
+	desc = "A black queen chess piece. It can move any number of tiles in diagonal and straight lines."
+	icon_state = "black_queen"
+
+/obj/structure/chess/BlackKing
+	name = "\improper Black King"
+	desc = "A black king chess piece. It can move one tile in any direction."
+	icon_state = "black_king"

code/game/objects/structures/watercloset.dm

@@ -616,9 +616,10 @@
 	icon = 'icons/obj/watercloset.dmi'
 	icon_state = "open"
 	color = "#ACD1E9" //Default color, didn't bother hardcoding other colors, mappers can and should easily change it.
-	alpha = 200 //Mappers can also just set this to 255 if they want curtains that can't be seen through
+	alpha = 200 //Mappers can also just set this to 255 if they want curtains that can't be seen through <- No longer necessary unless you don't want to see through it no matter what.
 	layer = SIGN_LAYER
 	anchored = TRUE
+	max_integrity = 25 //This makes cloth shower curtains as durable as a directional glass window. 300 integrity buildable shower curtains as a cover mechanic is a meta I don't want to see.
 	opacity = 0
 	density = FALSE
 	var/open = TRUE
@@ -633,12 +634,14 @@
 		layer = WALL_OBJ_LAYER
 		density = TRUE
 		open = FALSE
+		opacity = 1
 
 	else
 		icon_state = "open"
 		layer = SIGN_LAYER
 		density = FALSE
 		open = TRUE
+		opacity = 0
 
 /obj/structure/curtain/attackby(obj/item/W, mob/user)
 	if (istype(W, /obj/item/toy/crayon))

tgstation.dme

@@ -1063,6 +1063,7 @@
 #include "code\game\objects\structures\artstuff.dm"
 #include "code\game\objects\structures\barsigns.dm"
 #include "code\game\objects\structures\bedsheet_bin.dm"
+#include "code\game\objects\structures\chess.dm"
 #include "code\game\objects\structures\destructible_structures.dm"
 #include "code\game\objects\structures\displaycase.dm"
 #include "code\game\objects\structures\divine.dm"