use an expand def-field to automaticly expand and unexpand the three available types of expansion and let nearly all decor use this form

example of usage:
	expand = { top="homedecor:newnode", right="homedecor:rightnode", forward="homedecor:forwardnode" }

homedecor/furniture.lua

@@ -320,7 +320,7 @@ for _, color in ipairs(bedcolors) do
 
 end
 
-minetest.register_node("homedecor:wardrobe_top", {
+homedecor.register("wardrobe_top", {
 	tiles = {
 		"forniture_wood.png",
 		"forniture_wood.png",
@@ -329,9 +329,6 @@ minetest.register_node("homedecor:wardrobe_top", {
 		"forniture_wood.png^[transformR90",
 		"homedecor_wardrobe_frontt.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = {snappy=3, not_in_creative_inventory=1},
 	node_box = {
 		type = "fixed",
@@ -372,17 +369,8 @@ homedecor.register("wardrobe_bottom", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { top="homedecor:wardrobe_top" },
-		return homedecor.stack_vertically(itemstack, placer, pointed_thing,
+	infotext = S("Wardrobe cabinet"),
-			"homedecor:wardrobe_bottom", "homedecor:wardrobe_top")
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:wardrobe_top" then
-			minetest.remove_node(pos2)
-		end
-	end,
-	infotext=S("Wardrobe cabinet"),
 	inventory = {
 		size=24,
 		formspec="size[8,8]"..
@@ -391,7 +379,7 @@ homedecor.register("wardrobe_bottom", {
 	},
 })
 
-minetest.register_node("homedecor:simple_bench", {
+homedecor.register("simple_bench", {
 	tiles = {
 		"homedecor_generic_wood.png",
 		"homedecor_generic_wood.png",
@@ -401,9 +389,6 @@ minetest.register_node("homedecor:simple_bench", {
 		"homedecor_bench_large_2_left_back.png^[transformFX"
 	},
 	description = "Simple Bench",
-	drawtype = "nodebox",
-	paramtype = "light",
-        paramtype2 = "facedir",
         groups = {snappy=3},
 	node_box = {
 		type = "fixed",
@@ -411,12 +396,11 @@ minetest.register_node("homedecor:simple_bench", {
                     {-0.5, -0.15, 0,  0.5,  -0.05, 0.4},
                     {-0.4, -0.5,  0.1, -0.3, -0.15, 0.3},
                     { 0.3, -0.5,  0.1,  0.4, -0.15, 0.3},
-	}
+		}
 	},
 })
 
-
+homedecor.register("bench_large_1_left", {
-minetest.register_node("homedecor:bench_large_1_left", {
 	description = "Garden Bench (style 1)",
 	tiles = {
 		"homedecor_bench_large_1_left_top.png",
@@ -427,9 +411,6 @@ minetest.register_node("homedecor:bench_large_1_left", {
 		"homedecor_bench_large_1_left_front.png"
 	},
 	inventory_image = "homedecor_bench_large_1_inv.png",
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = {snappy=3},
 	node_box = {
 		type = "fixed",
@@ -447,21 +428,10 @@ minetest.register_node("homedecor:bench_large_1_left", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.09375, 1.5, 0.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { right="homedecor:bench_large_1_right" },
-		return homedecor.stack_sideways(itemstack, placer, pointed_thing,
-			"homedecor:bench_large_1_left", "homedecor:bench_large_1_right", true)
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local fdir = oldnode.param2
-		if not fdir or fdir > 3 then return end
-		local pos2 = { x = pos.x + homedecor.fdir_to_right[fdir+1][1], y=pos.y, z = pos.z + homedecor.fdir_to_right[fdir+1][2] }
-		if minetest.get_node(pos2).name == "homedecor:bench_large_1_right" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:bench_large_1_right", {
+homedecor.register("bench_large_1_right", {
 	tiles = {
 		"homedecor_bench_large_1_left_top.png^[transformFX",
 		"homedecor_bench_large_1_left_bottom.png^[transformFX",
@@ -470,9 +440,6 @@ minetest.register_node("homedecor:bench_large_1_right", {
 		"homedecor_bench_large_1_left_back.png^[transformFX",
 		"homedecor_bench_large_1_left_front.png^[transformFX"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = {snappy=3},
 	node_box = {
 		type = "fixed",
@@ -493,7 +460,7 @@ minetest.register_node("homedecor:bench_large_1_right", {
 })
 
 
-minetest.register_node("homedecor:bench_large_2_left", {
+homedecor.register("bench_large_2_left", {
 	description = "Garden Bench (style 2)",
 	tiles = {
 		"homedecor_generic_wood.png",
@@ -504,9 +471,6 @@ minetest.register_node("homedecor:bench_large_2_left", {
 		"homedecor_bench_large_2_left_back.png^[transformFX"
 	},
 	inventory_image = "homedecor_bench_large_2_inv.png",
-	drawtype = "nodebox",
-	paramtype = "light",
-        paramtype2 = "facedir",
 	groups = {snappy=3},
 	node_box = {
 		type = "fixed",
@@ -533,21 +497,10 @@ minetest.register_node("homedecor:bench_large_2_left", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.15625, 1.5, 0.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { right="homedecor:bench_large_2_right" },
-		return homedecor.stack_sideways(itemstack, placer, pointed_thing,
-			"homedecor:bench_large_2_left", "homedecor:bench_large_2_right", true)
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local fdir = oldnode.param2
-		if not fdir or fdir > 3 then return end
-		local pos2 = { x = pos.x + homedecor.fdir_to_right[fdir+1][1], y=pos.y, z = pos.z + homedecor.fdir_to_right[fdir+1][2] }
-		if minetest.get_node(pos2).name == "homedecor:bench_large_2_right" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:bench_large_2_right", {
+homedecor.register("bench_large_2_right", {
 	tiles = {
 		"homedecor_generic_wood.png",
 		"homedecor_generic_wood.png",
@@ -556,9 +509,6 @@ minetest.register_node("homedecor:bench_large_2_right", {
 		"homedecor_bench_large_2_right_back.png",
 		"homedecor_bench_large_2_right_back.png^[transformFX"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-        paramtype2 = "facedir",
 	groups = {snappy=3},
 	node_box = {
 		type = "fixed",
@@ -587,7 +537,7 @@ minetest.register_node("homedecor:bench_large_2_right", {
 	},
 })
 
-minetest.register_node("homedecor:deckchair_head", {
+homedecor.register("deckchair_head", {
 	tiles = {
 		"homedecor_deckchair_top_c1.png",
 		"homedecor_deckchair_sides.png",
@@ -596,9 +546,6 @@ minetest.register_node("homedecor:deckchair_head", {
 		"homedecor_deckchair_sides.png",
 		"homedecor_deckchair_front.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
         groups = { snappy = 3, not_in_creative_inventory = 1 },
 	node_box = {
 		type = "fixed",
@@ -619,13 +566,13 @@ minetest.register_node("homedecor:deckchair_head", {
 			{-0.375, -0.5, 0, -0.3125, -0.25, 0.0625}, -- NodeBox14
 		}
 	},
-		selection_box = {
+	selection_box = {
-			type = "fixed",
+		type = "fixed",
-			fixed = { 0, 0, 0, 0, 0, 0 }
+		fixed = { 0, 0, 0, 0, 0, 0 }
-		}
+	}
 })
 
-minetest.register_node("homedecor:deckchair_foot", {
+homedecor.register("deckchair_foot", {
 	tiles = {
 		"homedecor_deckchair_top_c2.png",
 		"homedecor_deckchair_sides.png",
@@ -655,18 +602,7 @@ minetest.register_node("homedecor:deckchair_foot", {
 		type = "fixed",
 		fixed = { -0.45, -0.5, -0.5, 0.45, 0.35, 1.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { forward="homedecor:deckchair_head" },
-		return homedecor.stack_sideways(itemstack, placer, pointed_thing,
-			"homedecor:deckchair_foot", "homedecor:deckchair_head", false)
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local fdir = oldnode.param2
-		if not fdir or fdir > 3 then return end
-		local pos2 = { x = pos.x + homedecor.fdir_to_fwd[fdir+1][1], y=pos.y, z = pos.z + homedecor.fdir_to_fwd[fdir+1][2] }
-		if minetest.get_node(pos2).name == "homedecor:deckchair_head" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
 minetest.register_node("homedecor:wall_shelf", {
@@ -687,7 +623,7 @@ minetest.register_node("homedecor:wall_shelf", {
 	}
 })
 
-minetest.register_node("homedecor:grandfather_clock_bottom", {
+homedecor.register("grandfather_clock_bottom", {
 	description = "Grandfather Clock",
 	tiles = {
 		"homedecor_grandfather_clock_sides.png",
@@ -698,9 +634,6 @@ minetest.register_node("homedecor:grandfather_clock_bottom", {
 		"homedecor_grandfather_clock_bottom.png"
 	},
 	inventory_image = "homedecor_grandfather_clock_inv.png",
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy = 3 },
 	node_box = {
 		type = "fixed",
@@ -715,19 +648,10 @@ minetest.register_node("homedecor:grandfather_clock_bottom", {
 		type = "fixed",
 		fixed = { -0.4, -0.5, -0.4, 0.4, 1.5, 0.4 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { top="homedecor:grandfather_clock_top" },
-		return homedecor.stack_vertically(itemstack, placer, pointed_thing,
-			"homedecor:grandfather_clock_bottom", "homedecor:grandfather_clock_top")
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:grandfather_clock_top" then
-			minetest.remove_node(pos2)
-		end
-	end,
 })
 
-minetest.register_node("homedecor:grandfather_clock_top", {
+homedecor.register("grandfather_clock_top", {
 	tiles = {
 		"homedecor_grandfather_clock_sides.png",
 		"homedecor_grandfather_clock_sides.png",
@@ -736,9 +660,6 @@ minetest.register_node("homedecor:grandfather_clock_top", {
 		"homedecor_grandfather_clock_sides.png",
 		"homedecor_grandfather_clock_top.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy = 3, not_in_creative_inventory=1 },
 	node_box = {
 		type = "fixed",

homedecor/misc-nodes.lua

@@ -491,7 +491,7 @@ minetest.register_node("homedecor:dishwasher_granite", {
 	groups = { snappy = 3 },
 })
 
-minetest.register_node("homedecor:doghouse_base", {
+homedecor.register("doghouse_base", {
 	tiles = {
 		"homedecor_doghouse_base_top.png",
 		"homedecor_doghouse_base_bottom.png",
@@ -502,9 +502,6 @@ minetest.register_node("homedecor:doghouse_base", {
 	},
 	description = "Doghouse",
 	inventory_image = "homedecor_doghouse_inv.png",
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -526,19 +523,10 @@ minetest.register_node("homedecor:doghouse_base", {
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.0, 0.5 }
 	},
 	groups = {snappy=3},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { top="homedecor:doghouse_roof" },
-		return homedecor.stack_vertically(itemstack, placer, pointed_thing,
-				"homedecor:doghouse_base", "homedecor:doghouse_roof")
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:doghouse_roof" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:doghouse_roof", {
+homedecor.register("doghouse_roof", {
 	tiles = {
 		"homedecor_doghouse_roof_top.png",
 		"homedecor_doghouse_roof_bottom.png",
@@ -547,9 +535,6 @@ minetest.register_node("homedecor:doghouse_roof", {
 		"homedecor_doghouse_roof_front.png",
 		"homedecor_doghouse_roof_front.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -584,7 +569,7 @@ minetest.register_node("homedecor:doghouse_roof", {
 	groups = {snappy=3, not_in_creative_inventory=1},
 })
 
-minetest.register_node("homedecor:pool_table", {
+homedecor.register("pool_table", {
 	tiles = {
 		"homedecor_pool_table_top1.png",
 		"homedecor_pool_table_bottom1.png",
@@ -595,9 +580,6 @@ minetest.register_node("homedecor:pool_table", {
 	},
 	description = "Pool Table",
 	inventory_image = "homedecor_pool_table_inv.png",
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = {snappy=3},
 	node_box = {
 		type = "fixed",
@@ -631,21 +613,10 @@ minetest.register_node("homedecor:pool_table", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 0.3125, 1.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { forward="homedecor:pool_table_2" },
-		return homedecor.stack_sideways(itemstack, placer, pointed_thing,
-			"homedecor:pool_table", "homedecor:pool_table_2", false)
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local fdir = oldnode.param2
-		if not fdir or fdir > 3 then return end
-		local pos2 = { x = pos.x + homedecor.fdir_to_fwd[fdir+1][1], y=pos.y, z = pos.z + homedecor.fdir_to_fwd[fdir+1][2] }
-		if minetest.get_node(pos2).name == "homedecor:pool_table_2" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:pool_table_2", {
+homedecor.register("pool_table_2", {
 	tiles = {
 		"homedecor_pool_table_top1.png^[transformR180",
 		"homedecor_pool_table_bottom1.png",
@@ -654,9 +625,6 @@ minetest.register_node("homedecor:pool_table_2", {
 		"homedecor_pool_table_end1.png",
 		"homedecor_pool_table_end1.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = {snappy=3, not_in_creative_inventory=1},
 	node_box = {
 		type = "fixed",
@@ -727,17 +695,14 @@ minetest.register_node("homedecor:trash_can", {
 	}
 })
 
-minetest.register_node("homedecor:well_base", {
+homedecor.register("well_base", {
 	tiles = {
 		"homedecor_well_base_top.png",
 		"default_cobble.png"
 	},
 	inventory_image = "homedecor_well_inv.png",
 	description = "Water well",
-	drawtype = "nodebox",
+	groups = { snappy = 3 },
-	paramtype = "light",
-    paramtype2 = "facedir",
-    groups = { snappy = 3 },
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -764,19 +729,10 @@ minetest.register_node("homedecor:well_base", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { top="homedecor:well_top" },
-		return homedecor.stack_vertically(itemstack, placer, pointed_thing,
-			"homedecor:well_base", "homedecor:well_top")
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:well_top" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:well_top", {
+homedecor.register("well_top", {
 	tiles = {
 		"homedecor_well_roof_top.png",
 		"homedecor_well_roof_wood.png",
@@ -785,9 +741,6 @@ minetest.register_node("homedecor:well_top", {
 		"homedecor_well_roof_side2.png",
 		"homedecor_well_roof_side1.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy = 3 },
 	node_box = {
 		type = "fixed",
@@ -1170,7 +1123,7 @@ minetest.register_node("homedecor:dartboard", {
 	sounds = default.node_sound_defaults(),
 })
 
-minetest.register_node("homedecor:piano_left", {
+homedecor.register("piano_left", {
 	tiles = {
 		"homedecor_piano_top_left.png",
 		"homedecor_piano_sides.png",
@@ -1181,9 +1134,6 @@ minetest.register_node("homedecor:piano_left", {
 	},
 	inventory_image = "homedecor_piano_inv.png",
 	description = "Piano",
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
         groups = { snappy = 3 },
 	node_box = {
 		type = "fixed",
@@ -1202,21 +1152,10 @@ minetest.register_node("homedecor:piano_left", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.125, 1.5, 0.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { right="homedecor:piano_right" },
-		return homedecor.stack_sideways(itemstack, placer, pointed_thing,
-			"homedecor:piano_left", "homedecor:piano_right", true)
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local fdir = oldnode.param2
-		if not fdir or fdir > 3 then return end
-		local pos2 = { x = pos.x + homedecor.fdir_to_right[fdir+1][1], y=pos.y, z = pos.z + homedecor.fdir_to_right[fdir+1][2] }
-		if minetest.get_node(pos2).name == "homedecor:piano_right" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:piano_right", {
+homedecor.register("piano_right", {
 	tiles = {
 		"homedecor_piano_top_right.png",
 		"homedecor_piano_sides.png",
@@ -1225,9 +1164,6 @@ minetest.register_node("homedecor:piano_right", {
 		"homedecor_piano_sides.png",
 		"homedecor_piano_front_right.png",
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
         groups = { snappy = 3, not_in_creative_inventory=1 },
 	node_box = {
 		type = "fixed",
@@ -1509,16 +1445,13 @@ minetest.register_node("homedecor:stonepath", {
 	}
 })
 
-minetest.register_node("homedecor:barbecue", {
+homedecor.register("barbecue", {
 	description = "Barbecue",
 	tiles = {
 		{name="homedecor_barbecue_top.png", animation={type="vertical_frames",
 		aspect_w=16, aspect_h=16, length=2}},
 		"forniture_black_metal.png",
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy=3 },
 	light_source = 9,
 	node_box = {
@@ -1546,25 +1479,13 @@ minetest.register_node("homedecor:barbecue", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.3125, 0.5, 0.625, 0.3125 }
         },
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { top="homedecor:barbecue_meat" },
-		return homedecor.stack_vertically(itemstack, placer, pointed_thing,
-			"homedecor:barbecue", "homedecor:barbecue_meat")
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:barbecue_meat" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:barbecue_meat", {
+homedecor.register("barbecue_meat", {
 	tiles = {
 		"homedecor_barbecue_meat.png",
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy=3, not_in_creative_inventory=1 },
 	node_box = {
 		type = "fixed",
@@ -1576,7 +1497,7 @@ minetest.register_node("homedecor:barbecue_meat", {
 	selection_box = {
 		type = "fixed",
 		fixed = { 0, 0, 0, 0, 0, 0 }
-       }
+	}
 })
 
 minetest.register_node("homedecor:beer_tap", {
@@ -1662,7 +1583,7 @@ minetest.register_node("homedecor:beer_mug", {
 	}
 })
 
-minetest.register_node("homedecor:tool_cabinet_bottom", {
+homedecor.register("tool_cabinet_bottom", {
 	description = "Metal tool cabinet and work table",
 	tiles = {
 		"homedecor_tool_cabinet_bottom_top.png",
@@ -1673,9 +1594,6 @@ minetest.register_node("homedecor:tool_cabinet_bottom", {
 		"homedecor_tool_cabinet_bottom_front.png"
 	},
 	inventory_image = "homedecor_tool_cabinet_inv.png",
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy=3 },
 	node_box = {
 		type = "fixed",
@@ -1691,19 +1609,10 @@ minetest.register_node("homedecor:tool_cabinet_bottom", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = { top="homedecor:tool_cabinet_top" },
-		return homedecor.stack_vertically(itemstack, placer, pointed_thing,
-			"homedecor:tool_cabinet_bottom", "homedecor:tool_cabinet_top")
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:tool_cabinet_top" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:tool_cabinet_top", {
+homedecor.register("tool_cabinet_top", {
 	tiles = {
 		"homedecor_tool_cabinet_top_top.png",
 		"homedecor_tool_cabinet_top_bottom.png",
@@ -1712,9 +1621,6 @@ minetest.register_node("homedecor:tool_cabinet_top", {
 		"homedecor_tool_cabinet_top_back.png",
 		"homedecor_tool_cabinet_top_front.png"
 	},
-	drawtype = "nodebox",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	groups = { snappy=3, not_in_creative_inventory=1 },
 	node_box = {
 		type = "fixed",

homedecor/refrigerator.lua

@@ -53,15 +53,9 @@ homedecor.register("refrigerator_steel_bottom", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = {
-		homedecor.stack_vertically(itemstack, placer, pointed_thing, itemstack:get_name(), "homedecor:refrigerator_steel_top")
+		top="homedecor:refrigerator_steel_top"
-	end,
+	},
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:refrigerator_steel_top" then
-			minetest.remove_node(pos2)
-		end
-	end,
 	infotext=S("Refrigerator"),
 	inventory = {
 		size=50,
@@ -108,15 +102,9 @@ homedecor.register("refrigerator_white_bottom", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 }
 	},
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = {
-		homedecor.stack_vertically(itemstack, placer, pointed_thing, itemstack:get_name(), "homedecor:refrigerator_white_top")
+		top="homedecor:refrigerator_white_top"
-	end,
+	},
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local pos2 = { x = pos.x, y=pos.y + 1, z = pos.z }
-		if minetest.get_node(pos2).name == "homedecor:refrigerator_white_top" then
-			minetest.remove_node(pos2)
-		end
-	end,
 	infotext=S("Refrigerator"),
 	inventory = {
 		size=50,

homedecor/registration_handler.lua

@@ -16,6 +16,10 @@ local default_inventory_formspec = "size[8,9]"..
 	"list[current_player;main;0,6.08;8,3;8]"..
 	default.get_hotbar_bg(0,4.85)
 
+local function remove_node_if()
+end
+
+
 --wrapper around minetest.register_node that sets sane defaults and interprets some specialized settings
 function homedecor.register(name, def)
 	def.paramtype = def.paramtype or "light"
@@ -73,6 +77,47 @@ function homedecor.register(name, def)
 		end
 	end
 
+	local expand = def.expand
+	def.expand = nil
+
+	if expand then
+		def.on_place = def.on_place or function(itemstack, placer, pointed_thing)
+			if expand.top then
+				homedecor.stack_vertically(itemstack, placer, pointed_thing, itemstack:get_name(), expand.top)
+			end
+			if expand.right then
+				homedecor.stack_sideways(itemstack, placer, pointed_thing, itemstack:get_name(), expand.right, true)
+			end
+			if expand.forward then
+				homedecor.stack_sideways(itemstack, placer, pointed_thing, itemstack:get_name(), expand.forward, false)
+			end
+		end
+		def.after_dig_node = def.after_dig_node or function(pos, oldnode, oldmetadata, digger)
+			if expand.top then
+				local top_pos = { x=pos.x, y=pos.y+1, z=pos.z }
+				if minetest.get_node(top_pos).name == expand.top then
+					minetest.remove_node(top_pos)
+				end
+			end
+
+			local fdir = oldnode.param2
+			if not fdir or fdir > 3 then return end
+
+			if expand.right then
+				local right_pos = { x=pos.x+homedecor.fdir_to_right[fdir+1][1], y=pos.y, z=pos.z+homedecor.fdir_to_right[fdir+1][2] }
+				if minetest.get_node(right_pos).name == expand.right then
+					minetest.remove_node(right_pos)
+				end
+			end
+			if expand.forward then
+				local forward_pos = { x=pos.x+homedecor.fdir_to_fwd[fdir+1][1], y=pos.y, z=pos.z+homedecor.fdir_to_fwd[fdir+1][2] }
+				if minetest.get_node(forward_pos).name == expand.forward then
+					minetest.remove_node(forward_pos)
+				end
+			end
+		end
+	end
+
 	-- register the actual minetest node
 	minetest.register_node("homedecor:" .. name, def)
 end

homedecor/tables.lua

@@ -224,8 +224,7 @@ minetest.register_node('homedecor:utility_table_legs', {
 	},
 })
 
-minetest.register_node("homedecor:desk", {
+homedecor.register("desk", {
-	drawtype = "nodebox",
 	description = "Desk",
 	tiles = {
 		"forniture_wood.png",
@@ -236,8 +235,6 @@ minetest.register_node("homedecor:desk", {
 		"homedecor_desk_front_l.png"
 	},
 	inventory_image = "homedecor_desk_inv.png",
-	paramtype = "light",
-	paramtype2 = "facedir",
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -253,22 +250,12 @@ minetest.register_node("homedecor:desk", {
 		fixed = { -0.5, -0.5, -0.5, 1.5, 0.5, 0.5 }
 	},
 	groups = { snappy = 3 },
-	on_place = function(itemstack, placer, pointed_thing)
+	expand = {
-		return homedecor.stack_sideways(itemstack, placer, pointed_thing,
+		right="homedecor:desk_r"
-			"homedecor:desk", "homedecor:desk_r", true)
+	},
-	end,
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local fdir = oldnode.param2
-		if not fdir or fdir > 3 then return end
-		local pos2 = { x = pos.x + homedecor.fdir_to_right[fdir+1][1], y=pos.y, z = pos.z + homedecor.fdir_to_right[fdir+1][2] }
-		if minetest.get_node(pos2).name == "homedecor:desk_r" then
-			minetest.remove_node(pos2)
-		end
-	end
 })
 
-minetest.register_node("homedecor:desk_r", {
+homedecor.register("desk_r", {
-	drawtype = "nodebox",
 	tiles = {
 		"forniture_wood.png",
 		"forniture_wood.png",
@@ -277,8 +264,6 @@ minetest.register_node("homedecor:desk_r", {
 		"homedecor_desk_back_r.png",
 		"homedecor_desk_front_r.png"
 	},
-	paramtype = "light",
-	paramtype2 = "facedir",
 	node_box = {
 		type = "fixed",
 		fixed = {