Tram tile/bench fixes (tgstation#81798)

## About The Pull Request

- Tram benches can be rebuilt after deconstruction
- Tram tiles build the correct amount inhand
- Tram tiles available in the engineering protolathe with other items
- Tram tiles create the right stack type when pulled up
- Tram tiles have inhand/obj icons for both types

## Changelog

:cl: LT3
fix: Tram floor tiles constructed inhand provides 4 instead of 1
fix: Tram floor tiles provide correct stack item when pulled up
image: Tram floor tiles have their own inhand icons
qol: Tram floor tiles available in the engineering protolathe
fix: You can reconstruct deconstructed tram benches
/:cl:

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

@@ -48,6 +48,11 @@ GLOBAL_LIST_INIT(metal_recipes, list ( \
 		new /datum/stack_recipe("bench (left)", /obj/structure/chair/sofa/bench/left, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
 		new /datum/stack_recipe("bench (right)", /obj/structure/chair/sofa/bench/right, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
 		new /datum/stack_recipe("bench (corner)", /obj/structure/chair/sofa/bench/corner, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
+		new /datum/stack_recipe("tram bench (solo)", /obj/structure/chair/sofa/bench/tram/solo, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
+		new /datum/stack_recipe("tram bench (middle)", /obj/structure/chair/sofa/bench/tram, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
+		new /datum/stack_recipe("tram bench (left)", /obj/structure/chair/sofa/bench/tram/left, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
+		new /datum/stack_recipe("tram bench (right)", /obj/structure/chair/sofa/bench/tram/right, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
+		new /datum/stack_recipe("tram bench (corner)", /obj/structure/chair/sofa/bench/tram/corner, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_FURNITURE), \
 		)), \
 	new /datum/stack_recipe_list("chess pieces", list( \
 		new /datum/stack_recipe("White Pawn", /obj/structure/chess/whitepawn, 2, time = 1 SECONDS, one_per_turf = TRUE, on_solid_ground = TRUE, category = CAT_ENTERTAINMENT), \
@@ -779,7 +784,8 @@ GLOBAL_LIST_INIT(bronze_recipes, list ( \
 	)
 GLOBAL_LIST_INIT(plastic_recipes, list(
 	new /datum/stack_recipe("plastic floor tile", /obj/item/stack/tile/plastic, 1, 4, 20, time = 2 SECONDS, check_density = FALSE, category = CAT_TILES), \
-	new /datum/stack_recipe("thermoplastic tram tile", /obj/item/stack/thermoplastic, 1, 2, time = 4 SECONDS, check_density = FALSE, placement_checks = STACK_CHECK_TRAM_EXCLUSIVE, category = CAT_TILES), \
+	new /datum/stack_recipe("light tram tile", /obj/item/stack/thermoplastic/light, 1, 4, 20, time = 2 SECONDS, check_density = FALSE, category = CAT_TILES), \
+	new /datum/stack_recipe("dark tram tile", /obj/item/stack/thermoplastic, 1, 4, 20, time = 2 SECONDS, check_density = FALSE, category = CAT_TILES), \
 	new /datum/stack_recipe("folding plastic chair", /obj/structure/chair/plastic, 2, check_density = FALSE, category = CAT_FURNITURE), \
 	new /datum/stack_recipe("plastic flaps", /obj/structure/plasticflaps, 5, one_per_turf = TRUE, on_solid_ground = TRUE, time = 4 SECONDS, category = CAT_FURNITURE), \
 	new /datum/stack_recipe("water bottle", /obj/item/reagent_containers/cup/glass/waterbottle/empty, check_density = FALSE, category = CAT_CONTAINERS), \

code/modules/research/designs/autolathe/engineering_designs.dm

@@ -426,3 +426,29 @@
 		RND_CATEGORY_CONSTRUCTION + RND_SUBCATEGORY_CONSTRUCTION_MOUNTS,
 	)
 	departmental_flags = DEPARTMENT_BITFLAG_ENGINEERING
+
+/datum/design/tram_floor_dark
+	name = "Dark Tram Tile"
+	id = "tram_floor_dark"
+	build_type = PROTOLATHE
+	materials = list(/datum/material/plastic = SHEET_MATERIAL_AMOUNT * 0.25)
+	build_path = /obj/item/stack/thermoplastic
+	maxstack = 50
+	category = list(
+		RND_CATEGORY_INITIAL,
+		RND_CATEGORY_CONSTRUCTION + RND_SUBCATEGORY_CONSTRUCTION_MATERIALS,
+	)
+	departmental_flags = DEPARTMENT_BITFLAG_ENGINEERING
+
+/datum/design/tram_floor_light
+	name = "Light Tram Tile"
+	id = "tram_floor_light"
+	build_type = PROTOLATHE
+	materials = list(/datum/material/plastic = SHEET_MATERIAL_AMOUNT * 0.25)
+	build_path = /obj/item/stack/thermoplastic/light
+	maxstack = 50
+	category = list(
+		RND_CATEGORY_INITIAL,
+		RND_CATEGORY_CONSTRUCTION + RND_SUBCATEGORY_CONSTRUCTION_MATERIALS,
+	)
+	departmental_flags = DEPARTMENT_BITFLAG_ENGINEERING

code/modules/research/techweb/all_nodes.dm

@@ -121,6 +121,8 @@
 		"toy_armblade",
 		"toy_balloon",
 		"toygun",
+		"tram_floor_dark",
+		"tram_floor_light",
 		"trapdoor_electronics",
 		"turbine_part_compressor",
 		"turbine_part_rotor",

code/modules/transport/tram/tram_floors.dm

@@ -255,7 +255,7 @@
 		span_notice("You wedge \the [tool] into the tram panel's gap in the frame and start prying..."))
 		if(tool.use_tool(src, user, 1 SECONDS, volume = 50))
 			to_chat(user, span_notice("The panel pops out of the frame."))
-			var/obj/item/stack/thermoplastic/pulled_tile = new()
+			var/obj/item/stack/thermoplastic/pulled_tile = new floor_tile()
 			pulled_tile.update_integrity(atom_integrity)
 			user.put_in_hands(pulled_tile)
 			qdel(src)
@@ -283,8 +283,8 @@
 	icon = 'icons/obj/tiles.dmi'
 	lefthand_file = 'icons/mob/inhands/items/tiles_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/items/tiles_righthand.dmi'
-	icon_state = "tile_textured_white_large"
-	inhand_icon_state = "tile-neon-glow"
+	icon_state = "tile_tram_dark"
+	inhand_icon_state = "tile-tram"
 	color = COLOR_TRAM_BLUE
 	w_class = WEIGHT_CLASS_NORMAL
 	force = 1
@@ -297,7 +297,9 @@
 	var/tile_type = /obj/structure/thermoplastic
 
 /obj/item/stack/thermoplastic/light
+	icon_state = "tile_tram_light"
 	color = COLOR_TRAM_LIGHT_BLUE
+	merge_type = /obj/item/stack/thermoplastic/light
 	tile_type = /obj/structure/thermoplastic/light
 
 /obj/item/stack/thermoplastic/Initialize(mapload, new_amount, merge = TRUE, list/mat_override=null, mat_amt=1)