From a2c8e2db8e0b7d75dbe3e921ce43bc6c42784b4b Mon Sep 17 00:00:00 2001
From: flux <25628292+fluxionary@users.noreply.github.com>
Date: Tue, 14 Jun 2022 16:30:41 -0700
Subject: [PATCH] circular saw works now; still need to do compatabilit and
 testing

---
 moreblocks/nodes.lua         |   6 +-
 stairsplus/api/alias.lua     |   8 +-
 stairsplus/api/node.lua      | 125 +++++++++--
 stairsplus/api/recipe.lua    |  18 +-
 stairsplus/api/station.lua   | 398 ++++++++++++++++++++---------------
 stairsplus/circular_saw.lua  |   8 +-
 stairsplus/compat/legacy.lua |   8 +-
 stairsplus/shapes/micros.lua |  14 +-
 stairsplus/shapes/panels.lua |  14 +-
 stairsplus/shapes/slabs.lua  |  20 +-
 stairsplus/shapes/slopes.lua |  32 +--
 stairsplus/shapes/stairs.lua |  18 +-
 12 files changed, 410 insertions(+), 259 deletions(-)

diff --git a/moreblocks/nodes.lua b/moreblocks/nodes.lua
index d77448b..6b1ab04 100644
--- a/moreblocks/nodes.lua
+++ b/moreblocks/nodes.lua
@@ -37,7 +37,11 @@ local function register_stairs(name, def)
 	end
 
 	if moreblocks.has.stairsplus then
-		stairsplus.api.register_group(itemstring, "common")
+		if stairsplus.settings.legacy_mode then
+			stairsplus.api.register_group(itemstring, "legacy")
+		else
+			stairsplus.api.register_group(itemstring, "common")
+		end
 
 	elseif moreblocks.has.stairs then
 		stairs.register_stair_and_slab(
diff --git a/stairsplus/api/alias.lua b/stairsplus/api/alias.lua
index 2ae00b5..fee5c82 100644
--- a/stairsplus/api/alias.lua
+++ b/stairsplus/api/alias.lua
@@ -3,8 +3,8 @@ local api = stairsplus.api
 local table_is_empty = stairsplus.util.table_is_empty
 
 function api.register_alias_single(old_node, new_node, shape)
-	local old_shaped_node = api.format_name(shape, old_node)
-	local new_shaped_node = api.format_name(shape, new_node)
+	local old_shaped_node = api.format_name(old_node, shape)
+	local new_shaped_node = api.format_name(new_node, shape)
 
 	minetest.register_alias(old_shaped_node, new_shaped_node)
 end
@@ -16,8 +16,8 @@ function api.register_alias_all(old_node, new_node)
 end
 
 function api.register_alias_force_single(old_node, new_node, shape)
-	local old_shaped_node = api.format_name(shape, old_node)
-	local new_shaped_node = api.format_name(shape, new_node)
+	local old_shaped_node = api.format_name(old_node, shape)
+	local new_shaped_node = api.format_name(new_node, shape)
 
 	minetest.register_alias_force(old_shaped_node, new_shaped_node)
 
diff --git a/stairsplus/api/node.lua b/stairsplus/api/node.lua
index 4c8699c..6f1c996 100644
--- a/stairsplus/api/node.lua
+++ b/stairsplus/api/node.lua
@@ -25,14 +25,63 @@ local function scale_light(light_source, shape_def)
 	return math.max(1, math.min(math.round(light_source * shape_def.eighths / 4), light_source))
 end
 
-function api.format_name(shape, node)
+function api.format_name(node, shape)
 	local mod, name = node:match("^([^:]+):(.*)$")
 	local shape_def = api.registered_shapes[shape]
 	return ("%s:%s"):format(mod, shape_def.name_format:format(name))
 end
 
+local function check_node_validity(node_def)
+	if node_def.type ~= "node" then
+		error(("cannot register non-node %q w/ stairsplus"):format(node))
+	end
+
+	if (
+		node_def.drawtype == "airlike" or
+		node_def.drawtype == "liquid" or
+		node_def.drawtype == "flowingliquid" or
+		node_def.drawtype == "torchlike" or
+		node_def.drawtype == "signlike" or
+		node_def.drawtype == "plantlike" or
+		node_def.drawtype == "firelike" or
+		node_def.drawtype == "fencelike" or
+		node_def.drawtype == "raillike" or
+		node_def.drawtype == "nodebox" or
+		node_def.drawtype == "mesh" or
+		node_def.drawtype == "plantlike_rooted"
+	) then
+		error(("cannot register %q w/ drawtype %q w/ stairsplus"):format(node, node_def.drawtype))
+	end
+
+	if (
+		node_def.paramtype2 == "flowingliquid" or
+		node_def.paramtype2 == "wallmounted" or
+		node_def.paramtype2 == "leveled" or
+		node_def.paramtype2 == "degrotate" or
+		node_def.paramtype2 == "meshoptions" or
+		node_def.paramtype2 == "color" or
+		node_def.paramtype2 == "colorfacedir" or
+		node_def.paramtype2 == "colorwallmounted" or
+		node_def.paramtype2 == "glasslikeliquidlevel" or
+		node_def.paramtype2 == "colordegrotate"
+	) then
+		error(("cannot register %q w/ paramtype2 %q w/ stairsplus"):format(node, node_def.paramtype2))
+	end
+end
+
 function api.register_single(node, shape, overrides)
 	local node_def = table.copy(minetest.registered_nodes[node])
+	check_node_validity(node_def)
+
+	if shape ~= "micro_8" and not (api.nodes_by_shape.micro_8 or {})[node] then
+		-- always make sure a microblock exists
+		api.register_single(node, "micro_8", overrides)
+	end
+
+	if (api.nodes_by_shape[shape] or {})[node] then
+		return -- already registered
+	end
+
 	local shape_def = api.registered_shapes[shape]
 
 	local groups = {
@@ -46,35 +95,47 @@ function api.register_single(node, shape, overrides)
 
 	local def = {
 		description = S(shape_def.description, node_def.description or node),
+
 		drawtype = shape_def.drawtype,
 		mesh = shape_def.mesh,
 		node_box = shape_def.node_box,
 		collision_box = shape_def.collision_box,
 		selection_box = shape_def.selection_box,
-		groups = groups,
-		use_texture_alpha = node_def.use_texture_alpha,
 		paramtype = shape_def.paramtype or "light",
 		paramtype2 = shape_def.paramtype2 or "facedir",
+
 		light_source = scale_light(node_def.light_source, shape_def),
+		tiles = node_def.tiles,
+		overlay_tiles = node_def.overlay_tiles,
+		use_texture_alpha = node_def.use_texture_alpha,
+		color = node_def.color,
+		stack_max = node_def.stack_max,
+		sound = node_def.sound,
+		is_ground_content = node_def.is_ground_content,
+		walkable = node_def.walkable,
+		pointable = node_def.pointable,
+		diggable = node_def.diggable,
+		climbable = node_def.climbable,
+		move_resistance = node_def.move_resistance,
+		groups = groups,
 	}
 
-	local tiles = node_def.tiles
-	if #tiles > 1 and (node_def.drawtype or ""):match("glass") then
-		def.tiles = {tiles[1]}
-	else
-		def.tiles = tiles
+	if (node_def.drawtype or ""):match("glass") then
+		if #def.tiles > 1 then
+			def.tiles = {def.tiles[1]}
+		end
+
+		if def.overlay_tiles and #def.overlay_tiles > 1 then
+			def.overlay_tiles = {def.overlay_tiles[1]}
+		end
 	end
 
 	if node_def.short_description then
 		def.short_description = S(shape_def.description, node_def.short_description)
 	end
 
-	if def.use_texture_alpha == nil then
-		def.use_texture_alpha = node_def.use_texture_alpha
-	end
-
 	if node_def.drop then
-		local item = api.get_shaped_name(node_def.drop, shape)
+		local item = api.get_shaped_node(node_def.drop, shape)
 		if item then
 			def.drop = item
 		end
@@ -82,7 +143,7 @@ function api.register_single(node, shape, overrides)
 
 	table_set_all(def, overrides or {})
 
-	local shaped_name = api.format_name(shape, node)
+	local shaped_name = api.format_name(node, shape)
 	minetest.register_node(":" .. shaped_name, def)
 
 	if shape_def.aliases then
@@ -122,6 +183,12 @@ function api.register_group(node, group, overrides)
 	end
 end
 
+function api.register_groups(node, groups, overrides)
+	for _, group in ipairs(groups) do
+		api.register_group(node, group, overrides)
+	end
+end
+
 function api.get_shapes(node)
 	return table_sort_keys(api.shapes_by_node[node])
 end
@@ -130,11 +197,11 @@ function api.get_shapes_hash(node)
 	return api.shapes_by_node[node]
 end
 
-function api.get_shaped_name(node, shape_or_item)
+function api.get_shaped_node(node, shape_or_item)
 	local t = ItemStack(shape_or_item):to_table()
 
 	if api.registered_shapes[t.name] then
-		t.name = api.format_name(t.name, node)
+		t.name = api.format_name(node, t.name)
 
 	elseif t.name == "node" then
 		t.name = node
@@ -143,9 +210,33 @@ function api.get_shaped_name(node, shape_or_item)
 	return ItemStack(t):to_string()
 end
 
+function api.get_micronode(node)
+	return api.format_name(node, "micro_8")
+end
+
+api.node_by_shaped_node = {}
+api.shape_by_shaped_node = {}
+
+function api.get_node_of_shaped_node(shaped_node)
+	return api.node_by_shaped_node[shaped_node]
+end
+
+function api.get_shape_of_shaped_node(shaped_node)
+	return api.shape_by_shaped_node[shaped_node]
+end
+
 minetest.register_on_mods_loaded(function()
 	stairsplus.log("info", "registering schema crafts")
-	for node in pairs(api.shapes_by_node) do
+	for node, shapes in pairs(api.shapes_by_node) do
 		api.register_schema_crafts_for_node(node)
+
+		for shape in pairs(shapes) do
+			local shaped_node = api.format_name(node, shape)
+			api.node_by_shaped_node[shaped_node] = node
+			api.shape_by_shaped_node[shaped_node] = shape
+		end
+
+		api.node_by_shaped_node[node] = node
+		api.shape_by_shaped_node[node] = "node"
 	end
 end)
diff --git a/stairsplus/api/recipe.lua b/stairsplus/api/recipe.lua
index 277d680..67377c6 100644
--- a/stairsplus/api/recipe.lua
+++ b/stairsplus/api/recipe.lua
@@ -131,14 +131,14 @@ local function register_for_schema(node, shapes, schema)
 	local recipe = table.copy(schema)
 
 	if shapes[recipe.output] then
-		recipe.output = api.get_shaped_name(node, recipe.output)
+		recipe.output = api.get_shaped_node(node, recipe.output)
 	end
 
 	if recipe.replacements then
 		for _, replacement in ipairs(recipe.replacements) do
 			for i, item in ipairs(replacement) do
 				if shapes[item] then
-					replacement[i] = api.get_shaped_name(node, item)
+					replacement[i] = api.get_shaped_node(node, item)
 				end
 			end
 		end
@@ -147,7 +147,7 @@ local function register_for_schema(node, shapes, schema)
 	if recipe.type == "shapeless" then
 		for i, item in ipairs(recipe.recipe) do
 			if shapes[item] then
-				recipe.recipe[i] = api.get_shaped_name(node, item)
+				recipe.recipe[i] = api.get_shaped_node(node, item)
 			end
 		end
 
@@ -155,7 +155,7 @@ local function register_for_schema(node, shapes, schema)
 		for _, row in ipairs(schema.recipe) do
 			for i, item in ipairs(row) do
 				if shapes[item] then
-					row[i] = api.get_shaped_name(node, item)
+					row[i] = api.get_shaped_node(node, item)
 				end
 			end
 		end
@@ -202,9 +202,9 @@ function api.register_crafts_for_shapes(def)
 		for _, shape in ipairs(shapes) do
 			minetest.register_craft({
 				type = "cooking",
-				output = api.get_shaped_name(def.output, shape),
-				recipe = api.get_shaped_name(def.recipe, shape),
-				cooktime = def.cooktime(api.registered_shapes[shape].eigths),
+				output = api.get_shaped_node(def.output, shape),
+				recipe = api.get_shaped_node(def.recipe, shape),
+				cooktime = def.cooktime(api.registered_shapes[shape].eighths),
 			})
 		end
 
@@ -214,8 +214,8 @@ function api.register_crafts_for_shapes(def)
 		for _, shape in ipairs(shapes) do
 			minetest.register_craft({
 				type = "fuel",
-				recipe = api.get_shaped_name(def.recipe, shape),
-				burntime = def.burntime(api.registered_shapes[shape].eigths),
+				recipe = api.get_shaped_node(def.recipe, shape),
+				burntime = def.burntime(api.registered_shapes[shape].eighths),
 			})
 		end
 
diff --git a/stairsplus/api/station.lua b/stairsplus/api/station.lua
index 69cbdb7..c375514 100644
--- a/stairsplus/api/station.lua
+++ b/stairsplus/api/station.lua
@@ -3,222 +3,278 @@
 local api = stairsplus.api
 
 local S = stairsplus.S
-
-function api.register_station(name, shape_groups, def)
-	minetest.register_node(name, def)
-end
-
 local F = minetest.formspec_escape
 
-local circular_saw = {}
+local default_stack_max = tonumber(minetest.settings:get("default_stack_max")) or 99
 
+local station = {}
 
--- The amount of items offered per shape can be configured:
-function circular_saw.on_receive_fields(pos, formname, fields, sender)
-	local meta = minetest.get_meta(pos)
-	local max = tonumber(fields.max_offered)
-	if max and max > 0 then
-		meta:set_string("max_offered", max)
-		-- Update to show the correct number of items:
-		circular_saw:update_inventory(pos, 0)
-	end
-end
-
-
--- Moving the inventory of the circular_saw around is not allowed because it
--- is a fictional inventory. Moving inventory around would be rather
--- impractical and make things more difficult to calculate:
-function circular_saw.allow_metadata_inventory_move(
-	pos, from_list, from_index, to_list, to_index, count, player)
-	return 0
-end
-
-
--- Only input- and recycle-slot are intended as input slots:
-function circular_saw.allow_metadata_inventory_put(
-	pos, listname, index, stack, player)
-	-- The player is not allowed to put something in there:
-	if listname == "output" or listname == "micro" then
+local function get_cost(shaped_node)
+	if shaped_node == "" then
 		return 0
 	end
 
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local stackname = stack:get_name()
-	local count = stack:get_count()
-
-	-- Only allow those items that are offered in the output inventory to be recycled:
-	if listname == "recycle" then
-		if not inv:contains_item("output", stackname) then
-			return 0
-		end
-		local stackmax = stack:get_stack_max()
-		local instack = inv:get_stack("input", 1)
-		local microstack = inv:get_stack("micro", 1)
-		local incount = instack:get_count()
-		local incost = (incount * 8) + microstack:get_count()
-		local maxcost = (stackmax * 8) + 7
-		local cost = circular_saw:get_cost(inv, stackname)
-		if (incost + cost) > maxcost then
-			return math.max((maxcost - incost) / cost, 0)
-		end
-		return count
+	local shape = api.get_shape_of_shaped_node(shaped_node)
+	if shape == "node" then
+		return 8
 	end
 
-	-- Only accept certain blocks as input which are known to be craftable into stairs:
-	if listname == "input" then
-		if not inv:is_empty("input") then
-			if inv:get_stack("input", index):get_name() ~= stackname then
-				return 0
-			end
-		end
-		if not inv:is_empty("micro") then
-			local microstackname = inv:get_stack("micro", 1):get_name():gsub("^.+:micro_", "", 1)
-			local cutstackname = stackname:gsub("^.+:", "", 1)
-			if microstackname ~= cutstackname then
-				return 0
-			end
-		end
-		for name, t in pairs(circular_saw.known_nodes) do
-			if name == stackname and inv:room_for_item("input", stack) then
-				return count
-			end
-		end
-		return 0
+	local shape_def = api.registered_shapes[shape]
+	return shape_def and shape_def.eighths
+end
+
+local function get_current_node(pos)
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+
+	local input_stack = inv:get_stack("input", 1)
+	if not input_stack:is_empty() then
+		return input_stack:get_name()
+	end
+
+	local micro_stack = inv:get_stack("micro", 1)
+	if not micro_stack:is_empty() then
+		return api.get_node_of_shaped_node(micro_stack:get_name())
+	end
+
+	local recycle_stack = inv:get_stack("recycle", 1)
+	if not recycle_stack:is_empty() then
+		return api.get_node_of_shaped_node(recycle_stack:get_name())
 	end
 end
 
--- Taking is allowed from all slots (even the internal microblock slot).
--- Putting something in is slightly more complicated than taking anything
--- because we have to make sure it is of a suitable material:
-function circular_saw.on_metadata_inventory_put(
-	pos, listname, index, stack, player)
-	-- We need to find out if the circular_saw is already set to a
-	-- specific material or not:
+function station.update_infotext(pos)
 	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local stackname = stack:get_name()
-	local count = stack:get_count()
 
-	-- Putting something into the input slot is only possible if that had
-	-- been empty before or did contain something of the same material:
-	if listname == "input" then
-		-- Each new block is worth 8 microblocks:
-		circular_saw:update_inventory(pos, 8 * count)
-	elseif listname == "recycle" then
-		-- Lets look which shape this represents:
-		local cost = circular_saw:get_cost(inv, stackname)
-		local input_stack = inv:get_stack("input", 1)
-		-- check if this would not exceed input itemstack max_stacks
-		if input_stack:get_count() + ((cost * count) / 8) <= input_stack:get_stack_max() then
-			circular_saw:update_inventory(pos, cost * count)
-		end
+	local parts = {}
+	if station.can_dig(pos) then
+		table.insert(parts, S("Circular Saw is empty"))
 	end
+
+	local owner = meta:get_string("owner")
+	if owner ~= "" then
+		table.insert(parts, S("(owned by @1)", meta:get_string("owner")))
+	end
+
+	meta:set_string("infotext", table.concat(parts, " "))
 end
 
-function circular_saw.allow_metadata_inventory_take(pos, listname, index, stack, player)
+-- Player has taken something out of the box or placed something inside
+-- that amounts to count microblocks:
+function station.update_inventory(pos, taken_stack)
 	local meta = minetest.get_meta(pos)
 	local inv = meta:get_inventory()
-	local input_stack = inv:get_stack(listname, index)
-	local player_inv = player:get_inventory()
-	if not player_inv:room_for_item("main", input_stack) then
-		return 0
-	else
-		return stack:get_count()
-	end
-end
 
-function circular_saw.on_metadata_inventory_take(
-	pos, listname, index, stack, player)
+	local node = get_current_node(pos)
 
-	-- Prevent (inbuilt) swapping between inventories with different blocks
-	-- corrupting player inventory or Saw with 'unknown' items.
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local input_stack = inv:get_stack(listname, index)
-	if not input_stack:is_empty() and input_stack:get_name() ~= stack:get_name() then
-		local player_inv = player:get_inventory()
-
-		-- Prevent arbitrary item duplication.
-		inv:remove_item(listname, input_stack)
-
-		if player_inv:room_for_item("main", input_stack) then
-			player_inv:add_item("main", input_stack)
+	if not node then
+		for i = 1, inv:get_size("output") do
+			inv:set_stack("output", i, ItemStack())
 		end
-
-		circular_saw:reset(pos)
 		return
 	end
 
-	-- If it is one of the offered stairs: find out how many
-	-- microblocks have to be subtracted:
-	if listname == "output" then
-		-- We do know how much each block at each position costs:
-		local cost = circular_saw.cost_in_microblocks[index]
-			* stack:get_count()
+	local input_stack = inv:get_stack("input", 1)
+	local micro_stack = inv:get_stack("micro", 1)
+	local recycle_stack = inv:get_stack("recycle", 1)
 
-		circular_saw:update_inventory(pos, -cost)
-	elseif listname == "micro" then
-		-- Each microblock costs 1 microblock:
-		circular_saw:update_inventory(pos, -stack:get_count())
-	elseif listname == "input" then
-		-- Each normal (= full) block taken costs 8 microblocks:
-		circular_saw:update_inventory(pos, 8 * -stack:get_count())
+	local current_value = 8 * input_stack:get_count() + micro_stack:get_count()
+	local new_value = current_value + get_cost(recycle_stack:get_name()) * recycle_stack:get_count()
+	if taken_stack then
+		new_value = new_value - get_cost(taken_stack:get_name()) * taken_stack:get_count()
+	end
+	local new_micros = new_value % 8
+	local new_blocks = math.floor(new_value / 8)
+
+	inv:set_stack("input", 1, ItemStack({name = node, count = new_blocks}))
+	inv:set_stack("micro", 1, ItemStack({name = api.get_micronode(node), count = new_micros}))
+	inv:set_stack("recycle", 1, ItemStack())
+
+	if new_value == 0 then
+		for i = 1, inv:get_size("output") do
+			inv:set_stack("output", i, "")
+		end
+		return
+	end
+
+	local valid_shapes = api.shapes_by_node[node]
+	local shape_groups = minetest.registered_nodes[minetest.get_node(pos).name]._stairsplus_shape_groups
+
+	local max_offered = meta:get_int("max_offered")
+
+	local i = 1
+	for _, group in ipairs(shape_groups) do
+		for _, shape in ipairs(api.shapes_by_group[group]) do
+			if valid_shapes[shape] then
+				local shape_def = api.registered_shapes[shape]
+				local shaped_node = api.format_name(node, shape)
+				local stack_max = math.min(max_offered, ItemStack(shaped_node):get_stack_max())
+				local count = math.min(stack_max, math.floor(new_value / shape_def.eighths))
+				local stack
+				if count > 0 then
+					stack = ItemStack({name = shaped_node, count = count})
+				else
+					stack = ""
+				end
+				inv:set_stack("output", i, stack)
+				i = i + 1
+			end
+		end
+	end
+
+	for j = i, inv:get_size("output") do
+		inv:set_stack("output", j, "")
 	end
-	-- The recycle field plays no role here since it is processed immediately.
 end
 
-function circular_saw.on_construct(pos)
+-- The amount of items offered per shape can be configured:
+function station.on_receive_fields(pos, formname, fields, sender)
 	local meta = minetest.get_meta(pos)
+	local max = tonumber(fields.max_offered)
+	if max and max > 0 then
+		meta:set_int("max_offered", max)
+		-- Update to show the correct number of items:
+		station.update_inventory(pos)
+		station.update_infotext(pos)
+	end
+end
+
+-- Moving the inventory of the station around is not allowed because it
+-- is a fictional inventory. Moving inventory around would be rather
+-- impractical and make things more difficult to calculate:
+function station.allow_metadata_inventory_move()
+	return 0
+end
+
+function station.allow_metadata_inventory_put(pos, listname, index, stack, player)
+	if listname ~= "recycle" then
+		return 0
+	end
+
+	local shaped_node = stack:get_name()
+	local node = api.get_node_of_shaped_node(shaped_node)
+	local shape = api.get_shape_of_shaped_node(shaped_node)
+
+	if not (node and shape) then
+		return 0
+	end
+
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+	local current_node = get_current_node(pos)
+
+	if current_node and node ~= current_node then
+		return 0
+	end
+
+	local count = stack:get_count()
+	local cost = get_cost(shaped_node)
+
+	local input_stack = inv:get_stack("input", 1)
+	local micro_stack = inv:get_stack("micro", 1)
+
+	local current_value = 8 * input_stack:get_count() + micro_stack:get_count()
+	local max_value = 8 * ItemStack(node):get_stack_max() + 7
+
+	local available_value = max_value - current_value
+	local available_count = math.floor(available_value / cost)
+
+	return math.min(count, available_count)
+end
+
+function station.on_metadata_inventory_put(pos, listname, index, stack, player)
+	station.update_inventory(pos)
+	station.update_infotext(pos)
+end
+
+function station.on_metadata_inventory_take(pos, listname, index, stack, player)
+	if listname == "output" then
+		station.update_inventory(pos, stack)
+	else
+		station.update_inventory(pos)
+	end
+
+	station.update_infotext(pos)
+end
+
+function station.build_formspec()
 	local fancy_inv = ""
 	if stairsplus.has.default then
 		-- prepend background and slot styles from default if available
 		fancy_inv = default.gui_bg .. default.gui_bg_img .. default.gui_slots
 	end
-	meta:set_string(
-	--FIXME Not work with @n in this part bug in minetest/minetest#7450.
-		"formspec", "size[11,10]" .. fancy_inv ..
-			"label[0,0;" .. S("Input material") .. "]" ..
-			"list[current_name;input;1.7,0;1,1;]" ..
-			"label[0,1;" .. F(S("Left-over")) .. "]" ..
-			"list[current_name;micro;1.7,1;1,1;]" ..
-			"label[0,2;" .. F(S("Recycle output")) .. "]" ..
-			"list[current_name;recycle;1.7,2;1,1;]" ..
-			"field[0.3,3.5;1,1;max_offered;" .. F(S("Max")) .. ":;${max_offered}]" ..
-			"button[1,3.2;1.7,1;Set;" .. F(S("Set")) .. "]" ..
-			"list[current_name;output;2.8,0;8,6;]" ..
-			"list[current_player;main;1.5,6.25;8,4;]" ..
-			"listring[current_name;output]" ..
-			"listring[current_player;main]" ..
-			"listring[current_name;input]" ..
-			"listring[current_player;main]" ..
-			"listring[current_name;micro]" ..
-			"listring[current_player;main]" ..
-			"listring[current_name;recycle]" ..
-			"listring[current_player;main]"
-	)
 
-	meta:set_int("anz", 0) -- No microblocks inside yet.
-	meta:set_string("max_offered", 99) -- How many items of this kind are offered by default?
-	meta:set_string("infotext", S("Circular Saw is empty"))
+	return ([[
+		size[11,10]
+		%s
+		label[0,0;%s]
+		list[current_name;input;1.7,0;1,1;]
+		label[0,1;%s]
+		list[current_name;micro;1.7,1;1,1;]
+		label[0,2;%s]
+		list[current_name;recycle;1.7,2;1,1;]
+		field[0.3,3.5;1,1;max_offered;%s:;${max_offered}]
+		button[1,3.2;1.7,1;Set;%s]
+
+		list[current_name;output;2.8,0;8,6;]
+		list[current_player;main;1.5,6.25;8,4;]
+
+		listring[current_name;output]
+		listring[current_player;main]
+		listring[current_name;recycle]
+
+		listring[current_name;micro]
+		listring[current_player;main]
+
+		listring[current_name;input]
+		listring[current_player;main]
+	]]):format(
+		fancy_inv, S("Nodes"), F(S("Microblocks")), F(S("Input")), F(S("Max")), F(S("Set"))
+	)
+end
+
+function station.on_construct(pos)
+	local meta = minetest.get_meta(pos)
+
+	meta:set_string("formspec", station.build_formspec())
+	meta:set_string("max_offered", default_stack_max) -- How many items of this kind are offered by default?
 
 	local inv = meta:get_inventory()
+
 	inv:set_size("input", 1)    -- Input slot for full blocks of material x.
 	inv:set_size("micro", 1)    -- Storage for 1-7 surplus microblocks.
 	inv:set_size("recycle", 1)  -- Surplus partial blocks can be placed here.
 	inv:set_size("output", 6 * 8) -- 6x8 versions of stair-parts of material x.
 
-	circular_saw:reset(pos)
+	station.update_infotext(pos)
 end
 
-function circular_saw.can_dig(pos, player)
+function station.after_place_node(pos, placer)
+	local meta = minetest.get_meta(pos)
+	if minetest.is_player(placer) then
+		meta:set_string("owner", placer:get_player_name())
+	end
+end
+
+function station.can_dig(pos)
 	local meta = minetest.get_meta(pos)
 	local inv = meta:get_inventory()
-	if not inv:is_empty("input") or
-		not inv:is_empty("micro") or
-		not inv:is_empty("recycle") then
-		return false
-	end
-	-- Can be dug by anyone when empty, not only by the owner:
-	return true
+	return inv:is_empty("input") and inv:is_empty("micro")
 end
+
+function api.register_station(name, shape_groups, def)
+	def.after_place_node = def.after_place_node or station.after_place_node
+	def.on_construct = def.on_construct or station.on_construct
+	def.can_dig = def.can_dig or station.can_dig
+	def.on_receive_fields = def.on_receive_fields or station.on_receive_fields
+	def.allow_metadata_inventory_move = def.allow_metadata_inventory_move or station.allow_metadata_inventory_move
+	def.allow_metadata_inventory_put = def.allow_metadata_inventory_put or station.allow_metadata_inventory_put
+	def.allow_metadata_inventory_take = def.allow_metadata_inventory_take or station.allow_metadata_inventory_take
+	def.on_metadata_inventory_put = def.on_metadata_inventory_put or station.on_metadata_inventory_put
+	def.on_metadata_inventory_take = def.on_metadata_inventory_take or station.on_metadata_inventory_take
+	def._stairsplus_shape_groups = shape_groups
+
+	minetest.register_node(name, def)
+end
+
+api.station = station
diff --git a/stairsplus/circular_saw.lua b/stairsplus/circular_saw.lua
index 22ebe42..8425764 100644
--- a/stairsplus/circular_saw.lua
+++ b/stairsplus/circular_saw.lua
@@ -8,13 +8,7 @@ local api = stairsplus.api
 local S = stairsplus.S
 local cm = stairsplus.resources.craft_materials
 
-api.register_station("stairsplus:circular_saw", {
-	micros = 1,
-	panels = 1,
-	slabs = 1,
-	slopes = 1,
-	stairs = 1,
-}, {
+api.register_station("stairsplus:circular_saw", {"legacy"}, {
 	description = S("Circular Saw"),
 	drawtype = "nodebox",
 	node_box = {
diff --git a/stairsplus/compat/legacy.lua b/stairsplus/compat/legacy.lua
index 576063b..dd67e56 100644
--- a/stairsplus/compat/legacy.lua
+++ b/stairsplus/compat/legacy.lua
@@ -3,8 +3,14 @@
 -- existing servers
 local api = stairsplus.api
 
+local legacy_mode = stairsplus.settings.legacy_mode
+
 function stairsplus:register_all(modname, subname, recipeitem, fields)
-	api.register_all(recipeitem, fields)
+	if legacy_mode then
+		api.register_group(recipeitem, "legacy", fields)
+	else
+		api.register_group(recipeitem, "common", fields)
+	end
 
 	local old_name = ("%s:%s"):format(modname, subname)
 	if old_name ~= recipeitem then
diff --git a/stairsplus/shapes/micros.lua b/stairsplus/shapes/micros.lua
index b564007..dd517f1 100644
--- a/stairsplus/shapes/micros.lua
+++ b/stairsplus/shapes/micros.lua
@@ -1,7 +1,7 @@
 stairsplus.api.register_shape("micro_1", {
 	name_format = "micro_%s_1",
 	description = "@1 1/16 Microblock",
-	shape_groups = {micro = 1},
+	shape_groups = {micro = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -13,7 +13,7 @@ stairsplus.api.register_shape("micro_1", {
 stairsplus.api.register_shape("micro_2", {
 	name_format = "micro_%s_2",
 	description = "@1 1/8 Microblock",
-	shape_groups = {micro = 1},
+	shape_groups = {micro = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -25,7 +25,7 @@ stairsplus.api.register_shape("micro_2", {
 stairsplus.api.register_shape("micro_4", {
 	name_format = "micro_%s_4",
 	description = "@1 1/4 Microblock",
-	shape_groups = {micro = 1},
+	shape_groups = {micro = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -38,7 +38,7 @@ stairsplus.api.register_shape("micro_8", {
 	name_format = "micro_%s_8",
 	aliases = {"micro_%s", "micro_%s_bottom"},
 	description = "@1 Microblock", -- leave out the 1/2 to not confuse people too much...
-	shape_groups = {micro = 1, obligatory = 1, common = 1},
+	shape_groups = {micro = 1, obligatory = 1, common = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -50,7 +50,7 @@ stairsplus.api.register_shape("micro_8", {
 stairsplus.api.register_shape("micro_12", {
 	name_format = "micro_%s_12",
 	description = "@1 3/4 Microblock",
-	shape_groups = {micro = 1},
+	shape_groups = {micro = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
@@ -62,7 +62,7 @@ stairsplus.api.register_shape("micro_12", {
 stairsplus.api.register_shape("micro_14", {
 	name_format = "micro_%s_14",
 	description = "@1 7/8 Microblock",
-	shape_groups = {micro = 1},
+	shape_groups = {micro = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
@@ -74,7 +74,7 @@ stairsplus.api.register_shape("micro_14", {
 stairsplus.api.register_shape("micro_15", {
 	name_format = "micro_%s_5",
 	description = "@1 15/16 Microblock",
-	shape_groups = {micro = 1},
+	shape_groups = {micro = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
diff --git a/stairsplus/shapes/panels.lua b/stairsplus/shapes/panels.lua
index 74d0a18..c1bf898 100644
--- a/stairsplus/shapes/panels.lua
+++ b/stairsplus/shapes/panels.lua
@@ -1,7 +1,7 @@
 stairsplus.api.register_shape("panel_1", {
 	name_format = "panel_%s_1",
 	description = "@1 1/16 Panel",
-	shape_groups = {panel = 1},
+	shape_groups = {panel = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -13,7 +13,7 @@ stairsplus.api.register_shape("panel_1", {
 stairsplus.api.register_shape("panel_2", {
 	name_format = "panel_%s_2",
 	description = "@1 1/8 Panel",
-	shape_groups = {panel = 1},
+	shape_groups = {panel = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -25,7 +25,7 @@ stairsplus.api.register_shape("panel_2", {
 stairsplus.api.register_shape("panel_4", {
 	name_format = "panel_%s_4",
 	description = "@1 1/4 Panel",
-	shape_groups = {panel = 1},
+	shape_groups = {panel = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -38,7 +38,7 @@ stairsplus.api.register_shape("panel_8", {
 	name_format = "panel_%s_8",
 	aliases = {"panel_%s", "panel_bottom_%s"},
 	description = "@1 1/2 Panel",
-	shape_groups = {panel = 1, common = 1},
+	shape_groups = {panel = 1, common = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
@@ -50,7 +50,7 @@ stairsplus.api.register_shape("panel_8", {
 stairsplus.api.register_shape("panel_12", {
 	name_format = "panel_%s_12",
 	description = "@1 3/4 Panel",
-	shape_groups = {panel = 1},
+	shape_groups = {panel = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "nodebox",
 	node_box = {
@@ -62,7 +62,7 @@ stairsplus.api.register_shape("panel_12", {
 stairsplus.api.register_shape("panel_14", {
 	name_format = "panel_%s_14",
 	description = "@1 7/8 Panel",
-	shape_groups = {panel = 1},
+	shape_groups = {panel = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "nodebox",
 	node_box = {
@@ -74,7 +74,7 @@ stairsplus.api.register_shape("panel_14", {
 stairsplus.api.register_shape("panel_15", {
 	name_format = "panel_%s_15",
 	description = "@1 15/16 Panel",
-	shape_groups = {panel = 1},
+	shape_groups = {panel = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "nodebox",
 	node_box = {
diff --git a/stairsplus/shapes/slabs.lua b/stairsplus/shapes/slabs.lua
index b51f554..8a11a6d 100644
--- a/stairsplus/shapes/slabs.lua
+++ b/stairsplus/shapes/slabs.lua
@@ -1,7 +1,7 @@
 stairsplus.api.register_shape("slab_1", {
 	name_format = "slab_%s_1",
 	description = "@1 1/16 Slab",
-	shape_groups = {slab = 1, common = 1},
+	shape_groups = {slab = 1, common = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -13,7 +13,7 @@ stairsplus.api.register_shape("slab_1", {
 stairsplus.api.register_shape("slab_2", {
 	name_format = "slab_%s_2",
 	description = "@1 1/8 Slab",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -26,7 +26,7 @@ stairsplus.api.register_shape("slab_4", {
 	name_format = "slab_%s_4",
 	aliases = {"slab_%s_quarter"},
 	description = "@1 1/4 Slab",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
@@ -39,7 +39,7 @@ stairsplus.api.register_shape("slab_8", {
 	name_format = "slab_%s_8",
 	aliases = {"slab_%s"},
 	description = "@1 1/2 Slab",
-	shape_groups = {slab = 1, common = 1},
+	shape_groups = {slab = 1, common = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "nodebox",
 	node_box = {
@@ -52,7 +52,7 @@ stairsplus.api.register_shape("slab_12", {
 	name_format = "slab_%s_12",
 	aliases = {"slab_%s_three_quarter"},
 	description = "@1 3/4 Slab",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "nodebox",
 	node_box = {
@@ -64,7 +64,7 @@ stairsplus.api.register_shape("slab_12", {
 stairsplus.api.register_shape("slab_14", {
 	name_format = "slab_%s_14",
 	description = "@1 7/8 Slab",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 7,
 	drawtype = "nodebox",
 	node_box = {
@@ -76,7 +76,7 @@ stairsplus.api.register_shape("slab_14", {
 stairsplus.api.register_shape("slab_15", {
 	name_format = "slab_%s_15",
 	description = "@1 15/16 Slab",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 7,
 	drawtype = "nodebox",
 	node_box = {
@@ -90,7 +90,7 @@ stairsplus.api.register_shape("slab_15", {
 stairsplus.api.register_shape("slab_two_sides", {
 	name_format = "slab_%s_two_sides",
 	description = "@1 1/16 Slab Two Sides",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
@@ -105,7 +105,7 @@ stairsplus.api.register_shape("slab_two_sides", {
 stairsplus.api.register_shape("slab_three_sides", {
 	name_format = "slab_%s_three_sides",
 	description = "@1 1/16 Slab Three Sides",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "nodebox",
 	node_box = {
@@ -121,7 +121,7 @@ stairsplus.api.register_shape("slab_three_sides", {
 stairsplus.api.register_shape("slab_three_sides_u", {
 	name_format = "slab_%s_three_sides_u",
 	description = "@1 1/16 Slab Three Sides U",
-	shape_groups = {slab = 1},
+	shape_groups = {slab = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "nodebox",
 	node_box = {
diff --git a/stairsplus/shapes/slopes.lua b/stairsplus/shapes/slopes.lua
index 5367df8..fbb44c8 100644
--- a/stairsplus/shapes/slopes.lua
+++ b/stairsplus/shapes/slopes.lua
@@ -11,7 +11,7 @@ local box_slope = {
 stairsplus.api.register_shape("slope", {
 	name_format = "slope_%s",
 	description = "@1 Slope",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope.obj",
@@ -32,7 +32,7 @@ local box_slope_half = {
 stairsplus.api.register_shape("slope_half", {
 	name_format = "slope_%s_half",
 	description = "@1 1/2 Slope",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_half.obj",
@@ -53,7 +53,7 @@ local box_slope_half_raised = {
 stairsplus.api.register_shape("slope_half_raised", {
 	name_format = "slope_%s_half_raised",
 	description = "@1 1/2 Slope Raised",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_half_raised.obj",
@@ -77,7 +77,7 @@ local box_slope_inner = {
 stairsplus.api.register_shape("slope_inner", {
 	name_format = "slope_%s_inner",
 	description = "@1 Slope Inner",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_inner.obj",
@@ -88,7 +88,7 @@ stairsplus.api.register_shape("slope_inner", {
 stairsplus.api.register_shape("slope_inner_cut", {
 	name_format = "slope_%s_inner_cut",
 	description = "@1 Slope Inner Cut",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_inner_cut.obj",
@@ -112,7 +112,7 @@ local box_slope_inner_half = {
 stairsplus.api.register_shape("slope_inner_half", {
 	name_format = "slope_%s_inner_half",
 	description = "@1 Slope Inner Half",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_inner_half.obj",
@@ -123,7 +123,7 @@ stairsplus.api.register_shape("slope_inner_half", {
 stairsplus.api.register_shape("slope_inner_cut_half", {
 	name_format = "slope_%s_inner_cut_half",
 	description = "@1 Slope Inner Cut Half",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_inner_cut_half.obj",
@@ -147,7 +147,7 @@ local box_slope_inner_half_raised = {
 stairsplus.api.register_shape("slope_inner_half_raised", {
 	name_format = "slope_%s_inner_half_raised",
 	description = "@1 Slope Inner Half Raised",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_inner_half_raised.obj",
@@ -158,7 +158,7 @@ stairsplus.api.register_shape("slope_inner_half_raised", {
 stairsplus.api.register_shape("slope_inner_cut_half_raised", {
 	name_format = "slope_%s_inner_cut_half_raised",
 	description = "@1 Slope Inner Cut Half Raised",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 7,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_inner_cut_half_raised.obj",
@@ -181,7 +181,7 @@ local box_slope_outer = {
 stairsplus.api.register_shape("slope_outer", {
 	name_format = "slope_%s_outer",
 	description = "@1 Slope Outer",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_outer.obj",
@@ -192,7 +192,7 @@ stairsplus.api.register_shape("slope_outer", {
 stairsplus.api.register_shape("slope_outer_cut", {
 	name_format = "slope_%s_outer_cut",
 	description = "@1 Slope Outer Cut",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_outer_cut.obj",
@@ -203,7 +203,7 @@ stairsplus.api.register_shape("slope_outer_cut", {
 stairsplus.api.register_shape("slope_cut", {
 	name_format = "slope_%s_cut",
 	description = "@1 Slope Cut",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_cut.obj",
@@ -224,7 +224,7 @@ local box_slope_outer_half = {
 stairsplus.api.register_shape("slope_outer_half", {
 	name_format = "slope_%s_outer_half",
 	description = "@1 Slope Outer Half",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_outer_half.obj",
@@ -235,7 +235,7 @@ stairsplus.api.register_shape("slope_outer_half", {
 stairsplus.api.register_shape("slope_outer_cut_half", {
 	name_format = "slope_%s_outer_cut_half",
 	description = "@1 Slope Outer Cut Half",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_outer_cut_half.obj",
@@ -256,7 +256,7 @@ local box_slope_outer_half_raised = {
 stairsplus.api.register_shape("slope_outer_half_raised", {
 	name_format = "slope_%s_outer_half_raised",
 	description = "@1 Slope Outer Half Raised",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_outer_half_raised.obj",
@@ -267,7 +267,7 @@ stairsplus.api.register_shape("slope_outer_half_raised", {
 stairsplus.api.register_shape("slope_outer_cut_half_raised", {
 	name_format = "slope_%s_outer_cut_half_raised",
 	description = "@1 Slope Outer Cut Half Raised",
-	shape_groups = {slope = 1, common = 1},
+	shape_groups = {slope = 1, common = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "mesh",
 	mesh = "stairsplus_slope_outer_cut_half_raised.obj",
diff --git a/stairsplus/shapes/stairs.lua b/stairsplus/shapes/stairs.lua
index 5820c34..ba83da9 100644
--- a/stairsplus/shapes/stairs.lua
+++ b/stairsplus/shapes/stairs.lua
@@ -1,7 +1,7 @@
 stairsplus.api.register_shape("stair", {
 	name_format = "stair_%s",
 	description = "@1 Stair",
-	shape_groups = {stair = 1, common = 1},
+	shape_groups = {stair = 1, common = 1, legacy = 1},
 	eighths = 6,
 	drawtype = "nodebox",
 	node_box = {
@@ -16,7 +16,7 @@ stairsplus.api.register_shape("stair", {
 stairsplus.api.register_shape("stair_half", {
 	name_format = "stair_%s_half",
 	description = "@1 Half Stair",
-	shape_groups = {stair = 1},
+	shape_groups = {stair = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "nodebox",
 	node_box = {
@@ -31,7 +31,7 @@ stairsplus.api.register_shape("stair_half", {
 stairsplus.api.register_shape("stair_right_half", {
 	name_format = "stair_%s_right_half",
 	description = "@1 Right Half Stair",
-	shape_groups = {stair = 1},
+	shape_groups = {stair = 1, legacy = 1},
 	eighths = 3,
 	drawtype = "nodebox",
 	node_box = {
@@ -46,7 +46,7 @@ stairsplus.api.register_shape("stair_right_half", {
 stairsplus.api.register_shape("stair_inner", {
 	name_format = "stair_%s_inner",
 	description = "@1 Inner Stair",
-	shape_groups = {stair = 1, common = 1},
+	shape_groups = {stair = 1, common = 1, legacy = 1},
 	eighths = 5,
 	drawtype = "nodebox",
 	node_box = {
@@ -62,7 +62,7 @@ stairsplus.api.register_shape("stair_inner", {
 stairsplus.api.register_shape("stair_outer", {
 	name_format = "stair_%s_outer",
 	description = "@1 Outer Stair",
-	shape_groups = {stair = 1, common = 1},
+	shape_groups = {stair = 1, common = 1, legacy = 1},
 	eighths = 5,
 	drawtype = "nodebox",
 	node_box = {
@@ -77,7 +77,7 @@ stairsplus.api.register_shape("stair_outer", {
 stairsplus.api.register_shape("stair_alt_1", {
 	name_format = "stair_%s_alt_1",
 	description = "@1 1/16 Alt Stair",
-	shape_groups = {stair = 1},
+	shape_groups = {stair = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -92,7 +92,7 @@ stairsplus.api.register_shape("stair_alt_1", {
 stairsplus.api.register_shape("stair_alt_2", {
 	name_format = "stair_%s_alt_2",
 	description = "@1 1/8 Alt Stair",
-	shape_groups = {stair = 1},
+	shape_groups = {stair = 1, legacy = 1},
 	eighths = 1,
 	drawtype = "nodebox",
 	node_box = {
@@ -107,7 +107,7 @@ stairsplus.api.register_shape("stair_alt_2", {
 stairsplus.api.register_shape("stair_alt_4", {
 	name_format = "stair_%s_alt_4",
 	description = "@1 1/4 Alt Stair",
-	shape_groups = {stair = 1},
+	shape_groups = {stair = 1, legacy = 1},
 	eighths = 2,
 	drawtype = "nodebox",
 	node_box = {
@@ -123,7 +123,7 @@ stairsplus.api.register_shape("stair_alt_8", {
 	name_format = "stair_%s_alt_8",
 	aliases = {"stair_%s_alt"},
 	description = "@1 1/2 Alt Stair",
-	shape_groups = {stair = 1},
+	shape_groups = {stair = 1, legacy = 1},
 	eighths = 4,
 	drawtype = "nodebox",
 	node_box = {