Massive rework of creative inventory categories

API.md

@@ -60,5 +60,12 @@ These groups are used mostly for informational purposes
 * `eatable`: Item can be *directly* eaten by wielding + left click (`on_use=item_eat`). Rating is the satiation gain
 * `ammo=1`: Item is used as ammo for a weapon
 * `ammo_bow=1`: Item is used as ammo for bows
-* `weapon_ranged=1`: Item is a ranged weapon
+
+* `weapon=1`: Item is primarily (!) a weapon
+* `tool=1`: Item is primarily (!) a tool
+* `craftitem=1`: Item is primarily (!) used for crafting
+* `brewitem=1`: Item is primarily (!) used in brewing
+* `transport=1`: Item is used for transportation
+* `building_block=1`: Block is a building block
+* `deco_block=1`: Block is a decorational block
 

mods/beds/init.lua

@@ -54,7 +54,7 @@ minetest.register_node("beds:bed_bottom", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	stack_max = 1,
-	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3},
+	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3,deco_block=1},
 	sounds = default.node_sound_wood_defaults(),
 	node_box = {
 		type = "fixed",
@@ -151,7 +151,7 @@ minetest.register_node("beds:bed_top", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	is_ground_content = false,
-	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3},
+	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3,not_in_creative_inventory=1},
 	sounds = default.node_sound_wood_defaults(),
 	node_box = {
 		type = "fixed",

mods/bucket/init.lua

@@ -40,7 +40,6 @@ function bucket.register_liquid(source, flowing, itemname, inventory_image, name
 			inventory_image = inventory_image,
 			stack_max = 1,
 			liquids_pointable = true,
-			groups = {not_in_creative_inventory=1},
 			on_place = function(itemstack, user, pointed_thing)
 				-- Must be pointing to node
 				if pointed_thing.type ~= "node" then

mods/craftingpack/crafting/creative.lua

@@ -41,24 +41,29 @@ function set_inv(filter, player)
 	for name,def in pairs(minetest.registered_items) do
 		if (not def.groups.not_in_creative_inventory or def.groups.not_in_creative_inventory == 0) and def.description and def.description ~= "" then
 			if filter ~= "" then
+				local is_redstone = function(def)
+					return def.mesecons or def.groups.mesecon or def.groups.mesecon_conductor_craftable or def.groups.mesecon_effecor_off
+				end
+				local is_tool = function(def)
+					return def.groups.tool or (def.tool_capabilities ~= nil and def.tool_capabilities.damage_groups == nil)
+				end
+				local is_weapon = function(def)
+					return def.groups.weapon or def.groups.weapon_ranged or def.groups.ammo or def.groups.armor_head or def.groups.armor_torso or def.groups.armor_legs or def.groups.armor_feet
+				end
 				if filter == "#blocks" then
-					if def.walkable == true then
+					if def.groups.building_block then
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#deco" then
-					if def.walkable == false or def.drawtype == "plantlike" or def.drawtype == "allfaces_optional" then--def.groups. == true then
+					if def.groups.deco_block then
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#redstone" then
-					if def.mesecons or def.groups.mesecon or def.groups.mesecon_conductor_craftable or def.groups.mesecon_effecor_off then
+					if is_redstone(def) then
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#rail" then
-					if def.groups.rail or def.groups.minecart or def.groups.boat then
-						table.insert(creative_list, name)
-					end
-				elseif filter == "#misc" then
-					if def.drawtype == nil and def.tool_capabilities == nil and not string.find(string.lower(def.description), "ingot") and not string.find(string.lower(def.description), "lump") and not string.find(string.lower(def.description), "dye") and not string.find(string.lower(def.name), "diamond") and not string.find(string.lower(def.name), "redstone") and not string.find(string.lower(def.name), "obsidian") and not string.find(string.lower(def.description), "clay") then
+					if def.groups.transport then
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#food" then
@@ -66,15 +71,21 @@ function set_inv(filter, player)
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#tools" then
-					if def.tool_capabilities ~= nil and not string.find(string.lower(def.description), "sword") then
+					if is_tool(def) then
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#combat" then
-					if (def.tool_capabilities ~= nil and def.tool_capabilities.damage_groups ~= nil) or def.groups.weapon or def.groups.weapon_ranged or def.groups.ammo or def.groups.armor_head or def.groups.armor_torso or def.groups.armor_legs or def.groups.armor_feet then
+					if is_weapon(def) then
 						table.insert(creative_list, name)
 					end
 				elseif filter == "#matr" then
-					if def.drawtype == nil and def.tool_capabilities == nil and (string.find(string.lower(def.description), "ingot") or string.find(string.lower(def.description), "lump") or string.find(string.lower(def.description), "dye") or string.find(string.lower(def.name), "diamond") or string.find(string.lower(def.name), "redstone") or string.find(string.lower(def.name), "obsidian") or string.find(string.lower(def.description), "clay") or string.find(string.lower(def.description), "stick") or string.find(string.lower(def.description), "flint") or string.find(string.lower(def.description), "seed")) then
+					-- TODO: Add separate brewing category
+					if def.groups.craftitem or def.groups.brewitem then
+						table.insert(creative_list, name)
+					end
+				elseif filter == "#misc" then
+					if not def.groups.building_block and not def.groups.deco_block and not is_redstone(def) and not def.groups.transport and not def.groups.food and not def.groups.eatable and not is_tool(def) and not is_weapon(def) and not def.groups.craftitem and not def.groups.brewitem then
+
 						table.insert(creative_list, name)
 					end
 				elseif filter == "all" then

mods/craftingpack/crafting/init.lua

@@ -167,7 +167,7 @@ minetest.register_node("crafting:workbench", {
 		"crafting_workbench_side.png", "crafting_workbench_front.png", "crafting_workbench_front.png"},
 	paramtype2 = "facedir",
 	paramtype = "light",
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=2},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=2,deco_block=1},
 	on_rightclick = function(pos, node, clicker, itemstack)
 		set_workbench(clicker)
 	end,

mods/default/craftitems.lua

@@ -8,18 +8,21 @@ minetest.register_craftitem("default:stick", {
 	description = "Stick",
 	inventory_image = "default_stick.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:paper", {
 	description = "Paper",
 	inventory_image = "default_paper.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:book", {
 	description = "Book",
 	inventory_image = "default_book.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:coal_lump", {
@@ -27,6 +30,7 @@ minetest.register_craftitem("default:coal_lump", {
 	groups = { coal=1 },
 	inventory_image = "default_coal_lump.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:charcoal_lump", {
@@ -34,130 +38,151 @@ minetest.register_craftitem("default:charcoal_lump", {
 	groups = { coal=1 },
 	inventory_image = "default_charcoal_lump.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:iron_nugget", {
 	description = "Iron Nugget",
 	inventory_image = "default_iron_nugget.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:gold_nugget", {
 	description = "Gold Nugget",
 	inventory_image = "default_gold_nugget.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:diamond", {
 	description = "Diamond",
 	inventory_image = "default_diamond.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:clay_lump", {
 	description = "Clay",
 	inventory_image = "default_clay_lump.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:steel_ingot", {
 	description = "Iron Ingot",
 	inventory_image = "default_steel_ingot.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:gold_ingot", {
 	description = "Gold Ingot",
 	inventory_image = "default_gold_ingot.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:emerald", {
 	description = "Emerald",
 	inventory_image = "default_emerald.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:clay_brick", {
 	description = "Brick",
 	inventory_image = "default_clay_brick.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:flint", {
 	description = "Flint",
 	inventory_image = "default_flint.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:gunpowder", {
 	description = "Gunpowder",
 	inventory_image = "default_gunpowder.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:bone", {
 	description = "Bone",
 	inventory_image = "default_bone.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:glowstone_dust", {
 	description = "Glowstone Dust",
 	inventory_image = "default_glowstone_dust.png",
 	stack_max = 64,
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:fish_raw", {
 	description = "Raw Fish",
-    groups = {},
 	inventory_image = "default_fish.png",
 	on_use = minetest.item_eat(2),
 	stack_max = 64,
+	groups = { food=1, eatable = 2 },
 })
 
 minetest.register_craftitem("default:fish", {
 	description = "Cooked Fish",
-    groups = {},
 	inventory_image = "default_fish_cooked.png",
 	on_use = minetest.item_eat(4),
 	stack_max = 64,
+	groups = { food=1, eatable=4 },
 })
 
 minetest.register_craftitem("default:sugar", {
 	description = "Sugar",
 	inventory_image = "default_sugar.png",
 	stack_max = 64,
+	groups = { craftitem = 1 },
 })
 
 minetest.register_craftitem("default:string",{
 	description = "String",
 	inventory_image = "default_string.png",
 	stack_max = 64,
+	groups = { craftitem = 1 },
 })
 
 minetest.register_craftitem("default:bowl",{
 	description = "Bowl",
 	inventory_image = "default_bowl.png",
 	stack_max = 64,
+	groups = { craftitem = 1 },
 })
 
 minetest.register_craftitem("default:prismarine_cry", {
 	description = "Prismarine Crystals",
 	inventory_image = "default_prismarine_crystals.png",
 	stack_max = 64,
+	groups = { craftitem = 1 },
 })
 
 minetest.register_craftitem("default:prismarine_shard", {
 	description = "Prismarine Shard",
 	inventory_image = "default_prismarine_shard.png",
 	stack_max = 64,
+	groups = { craftitem = 1 },
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:quartz_crystal", {
 	description = "Nether Quartz",
 	inventory_image = "default_quartz_crystal.png",
 	stack_max = 64,
+	groups = { craftitem = 1 },
+	groups = { craftitem=1 },
 })
 
 minetest.register_craftitem("default:apple", {

mods/default/functions.lua

@@ -896,7 +896,7 @@ function AddGlass(desc, recipeitem, color)
 		paramtype = "light",
 		use_texture_alpha = true,
 		stack_max = 64,
-		groups = {cracky=3,oddly_breakable_by_hand=3},
+		groups = {cracky=3,oddly_breakable_by_hand=3, building_block=1},
 		sounds = default.node_sound_glass_defaults(),
 		drop = "",
 	})

mods/default/nodes.lua

@@ -22,7 +22,7 @@ minetest.register_node("default:stone", {
 	tiles = {"default_stone.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1, deco_block=1},
 	drop = 'default:cobble',
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -32,7 +32,7 @@ minetest.register_node("default:stone_with_coal", {
 	tiles = {"default_stone.png^default_mineral_coal.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3, building_block=1},
 	drop = 'default:coal_lump',
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -42,7 +42,7 @@ minetest.register_node("default:stone_with_iron", {
 	tiles = {"default_stone.png^default_mineral_iron.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	drop = 'default:stone_with_iron',
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -53,7 +53,7 @@ minetest.register_node("default:stone_with_gold", {
 	tiles = {"default_stone.png^default_mineral_gold.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	drop = "default:stone_with_gold",
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -69,7 +69,7 @@ minetest.register_node("default:stone_with_redstone", {
 	tiles = {"default_stone.png^default_mineral_redstone.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	drop = {
 		items = {
 			max_items = 1,
@@ -127,7 +127,7 @@ minetest.register_node("default:stone_with_lapis", {
 	tiles = {"default_stone.png^default_mineral_lapis.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -146,15 +146,8 @@ minetest.register_node("default:stone_with_emerald", {
 	tiles = {"default_stone.png^default_mineral_emerald.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	drop = "default:emerald",
---	drop = {
---		max_items = 2,
---		items = {
---			{items="default:emerald",rarity = 5},
---			{items="default:emerald"},
---		},
---	},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -163,7 +156,7 @@ minetest.register_node("default:stone_with_diamond", {
 	tiles = {"default_stone.png^default_mineral_diamond.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=1},
+	groups = {cracky=1, building_block=1},
 	drop = "default:diamond",
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -172,7 +165,7 @@ minetest.register_node("default:stonebrick", {
 	description = "Stone Bricks",
 	tiles = {"default_stone_brick.png"},
 	stack_max = 64,
-	groups = {cracky=3, stone=1, stonebrick=1},
+	groups = {cracky=3, stone=1, stonebrick=1, building_block=1, deco_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -181,7 +174,7 @@ minetest.register_node("default:stonebrickcarved", {
 	tiles = {"default_stonebrick_carved.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=3, stone=1, stonebrick=1},
+	groups = {cracky=3, stone=1, stonebrick=1, building_block=1, deco_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -190,7 +183,7 @@ minetest.register_node("default:stonebrickcracked", {
 	tiles = {"default_stonebrick_cracked.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=3, stone=1, stonebrick=1},
+	groups = {cracky=3, stone=1, stonebrick=1, building_block=1, deco_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -198,7 +191,7 @@ minetest.register_node("default:stonebrickmossy", {
 	description = "Mossy Stone Bricks",
 	tiles = {"default_stonebrick_mossy.png"},
 	stack_max = 64,
-	groups = {cracky=3, stone=1, stonebrick=1},
+	groups = {cracky=3, stone=1, stonebrick=1, building_block=1, deco_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -207,7 +200,7 @@ minetest.register_node("default:granite", {
 	tiles = {"default_granite.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -215,7 +208,7 @@ minetest.register_node("default:granite_smooth", {
 	description = "Polished Granite",
 	tiles = {"default_granite_smooth.png"},
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -224,7 +217,7 @@ minetest.register_node("default:andesite", {
 	tiles = {"default_andesite.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -232,7 +225,7 @@ minetest.register_node("default:andesite_smooth", {
 	description = "Polished Andesite",
 	tiles = {"default_andesite_smooth.png"},
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -241,7 +234,7 @@ minetest.register_node("default:diorite", {
 	tiles = {"default_diorite.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -249,7 +242,7 @@ minetest.register_node("default:diorite_smooth", {
 	description = "Polished Diorite",
 	tiles = {"default_diorite_smooth.png"},
 	stack_max = 64,
-	groups = {cracky=3, stone=1},
+	groups = {cracky=3, stone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -258,7 +251,7 @@ minetest.register_node("default:dirt_with_grass", {
 	tiles = {"default_grass.png", "default_dirt.png", "default_dirt.png^default_grass_side.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3, soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2},
+	groups = {crumbly=3, soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2, building_block=1},
 	drop = 'default:dirt',
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name="default_grass_footstep", gain=0.4},
@@ -271,7 +264,7 @@ minetest.register_node("default:mycelium", {
 	tiles = {"default_mycelium_top.png", "default_dirt.png", "default_mycelium_side.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3},
+	groups = {crumbly=3, building_block=1},
 	drop = 'default:dirt',
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name="default_grass_footstep", gain=0.4},
@@ -283,7 +276,7 @@ minetest.register_node("default:podzol", {
 	tiles = {"default_dirt_podzol_top.png", "default_dirt.png", "default_dirt_podzol_side.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3, soil=1, soil_sapling=2, soil_sugarcane=1},
+	groups = {crumbly=3, soil=1, soil_sapling=2, soil_sugarcane=1, building_block=1},
 	drop = 'default:dirt',
 	sounds = default.node_sound_dirt_defaults(),
 })
@@ -293,7 +286,7 @@ minetest.register_node("default:dirt", {
 	tiles = {"default_dirt.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3, soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2},
+	groups = {crumbly=3, soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2, building_block=1},
 	sounds = default.node_sound_dirt_defaults(),
 })
 
@@ -302,7 +295,7 @@ minetest.register_node("default:coarse_dirt", {
 	tiles = {"default_coarse_dirt.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3, soil=1, soil_sugarcane=1, cultivatable=1},
+	groups = {crumbly=3, soil=1, soil_sugarcane=1, cultivatable=1, building_block=1},
 	sounds = default.node_sound_dirt_defaults(),
 })
 
@@ -311,7 +304,7 @@ minetest.register_node("default:gravel", {
 	tiles = {"default_gravel.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2, falling_node=1},
+	groups = {crumbly=2, falling_node=1, building_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -330,7 +323,7 @@ minetest.register_node("default:sand", {
 	tiles = {"default_sand.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3, falling_node=1, sand=1, soil_sugarcane=1},
+	groups = {crumbly=3, falling_node=1, sand=1, soil_sugarcane=1, building_block=1},
 	sounds = default.node_sound_sand_defaults(),
 })
 
@@ -339,7 +332,7 @@ minetest.register_node("default:sandstone", {
 	tiles = {"default_sandstone_top.png", "default_sandstone_bottom.png", "default_sandstone_normal.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2,cracky=2,sandstone=1},
+	groups = {crumbly=2,cracky=2,sandstone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -348,7 +341,7 @@ minetest.register_node("default:sandstonesmooth", {
 	tiles = {"default_sandstone_top.png", "default_sandstone_bottom.png", "default_sandstone_smooth.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2,cracky=2,sandstone=1},
+	groups = {crumbly=2,cracky=2,sandstone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -357,7 +350,7 @@ minetest.register_node("default:sandstonecarved", {
 	tiles = {"default_sandstone_top.png", "default_sandstone_bottom.png", "default_sandstone_carved.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2,cracky=2,sandstone=1},
+	groups = {crumbly=2,cracky=2,sandstone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -368,7 +361,7 @@ minetest.register_node("default:redsand", {
 	tiles = {"default_red_sand.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3, falling_node=1, sand=1, soil_sugarcane=1},
+	groups = {crumbly=3, falling_node=1, sand=1, soil_sugarcane=1, building_block=1},
 	sounds = default.node_sound_sand_defaults(),
 })
 
@@ -377,7 +370,7 @@ minetest.register_node("default:redsandstone", {
 	tiles = {"default_redsandstone_top.png", "default_redsandstone_bottom.png", "default_redsandstone_normal.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2,cracky=2,redsandstone=1},
+	groups = {crumbly=2,cracky=2,redsandstone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -386,7 +379,7 @@ minetest.register_node("default:redsandstonesmooth", {
 	tiles = {"default_redsandstone_top.png", "default_redsandstone_bottom.png", "default_redsandstone_smooth.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2,cracky=2,redsandstone=1},
+	groups = {crumbly=2,cracky=2,redsandstone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -395,7 +388,7 @@ minetest.register_node("default:redsandstonecarved", {
 	tiles = {"default_redsandstone_top.png", "default_redsandstone_bottom.png", "default_redsandstone_carved.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=2,cracky=2,redsandstone=1},
+	groups = {crumbly=2,cracky=2,redsandstone=1, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -407,7 +400,7 @@ minetest.register_node("default:clay", {
 	tiles = {"default_clay.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3},
+	groups = {crumbly=3, building_block=1},
 	drop = 'default:clay_lump 4',
 	sounds = default.node_sound_dirt_defaults({
 		footstep = "",
@@ -419,7 +412,7 @@ minetest.register_node("default:brick", {
 	tiles = {"default_brick.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -431,7 +424,7 @@ minetest.register_node("default:haybale", {
 	paramtype2 = "facedir",
 	is_ground_content = false,
 	on_place = minetest.rotate_node,
-	groups = {oddly_breakable_by_hand=3,flammable=2},
+	groups = {oddly_breakable_by_hand=3,flammable=2, building_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 })
 
@@ -443,7 +436,7 @@ minetest.register_node("default:bone_block", {
 	is_ground_content = false,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
-	groups = {cracky=3},
+	groups = {cracky=3, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 ]]
@@ -462,7 +455,7 @@ minetest.register_node("default:sea_lantern", {
 		}
 	},
 	tiles = {"default_sea_lantern.png"},
-	groups = {oddly_breakable_by_hand=3},
+	groups = {oddly_breakable_by_hand=3, building_block=1},
 	sounds = default.node_sound_glass_defaults(),
 })
 
@@ -471,7 +464,7 @@ minetest.register_node("default:prismarine", {
 	stack_max = 64,
 	is_ground_content = false,
 	tiles = {{name="default_prismarine_anim.png", animation={type="vertical_frames", aspect_w=32, aspect_h=32, length=45.0}}},
-	groups = {cracky=3},
+	groups = {cracky=3, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -480,7 +473,7 @@ minetest.register_node("default:prismarine_brick", {
 	stack_max = 64,
 	is_ground_content = false,
 	tiles = {"default_prismarine_bricks.png"},
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -489,7 +482,7 @@ minetest.register_node("default:prismarine_dark", {
 	stack_max = 64,
 	is_ground_content = false,
 	tiles = {"default_prismarine_dark.png"},
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -503,7 +496,7 @@ minetest.register_node("default:tree", {
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
 	stack_max = 64,
-	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2, building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -521,7 +514,7 @@ minetest.register_node("default:sapling", {
 		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
 	},
 	stack_max = 64,
-	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -532,7 +525,7 @@ minetest.register_node("default:leaves", {
 	tiles = {"default_leaves.png"},
 	paramtype = "light",
 	stack_max = 64,
-	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
+	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1, deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -558,7 +551,7 @@ minetest.register_node("default:darktree", {
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
 	stack_max = 64,
-	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -576,7 +569,7 @@ minetest.register_node("default:darksapling", {
 		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
 	},
 	stack_max = 64,
-	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -587,7 +580,7 @@ minetest.register_node("default:darkleaves", {
 	tiles = {"default_leaves_big_oak.png"},
 	paramtype = "light",
 	stack_max = 64,
-	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
+	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1, deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -614,7 +607,7 @@ minetest.register_node("default:jungletree", {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
-	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -623,7 +616,7 @@ minetest.register_node("default:junglewood", {
 	tiles = {"default_junglewood.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -634,7 +627,7 @@ minetest.register_node("default:jungleleaves", {
 	tiles = {"default_jungleleaves.png"},
 	paramtype = "light",
 	stack_max = 64,
-	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
+	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1, deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -661,7 +654,7 @@ minetest.register_node("default:junglesapling", {
 		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
 	},
 	stack_max = 64,
-	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -674,7 +667,7 @@ minetest.register_node("default:acaciatree", {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
-	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -683,7 +676,7 @@ minetest.register_node("default:acaciawood", {
 	tiles = {"default_acaciawood.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -694,7 +687,7 @@ minetest.register_node("default:acacialeaves", {
 	tiles = {"default_acacialeaves.png"},
 	paramtype = "light",
 	stack_max = 64,
-	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
+	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1, deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -721,7 +714,7 @@ minetest.register_node("default:acaciasapling", {
 		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
 	},
 	stack_max = 64,
-	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -733,7 +726,7 @@ minetest.register_node("default:sprucetree", {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
-	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -742,7 +735,7 @@ minetest.register_node("default:sprucewood", {
 	tiles = {"default_sprucewood.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -753,7 +746,7 @@ minetest.register_node("default:spruceleaves", {
 	tiles = {"default_spruceleaves.png"},
 	paramtype = "light",
 	stack_max = 64,
-	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
+	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1, deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -786,7 +779,7 @@ minetest.register_node("default:sprucesapling", {
 		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
 	},
 	stack_max = 64,
-	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -796,7 +789,7 @@ minetest.register_node("default:birchtree", {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
-	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -805,7 +798,7 @@ minetest.register_node("default:birchwood", {
 	tiles = {"default_planks_birch.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -816,7 +809,7 @@ minetest.register_node("default:birchleaves", {
 	tiles = {"default_leaves_birch.png"},
 	paramtype = "light",
 	stack_max = 64,
-	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
+	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1, deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -844,7 +837,7 @@ minetest.register_node("default:birchsapling", {
 		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
 	},
 	stack_max = 64,
-	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -860,7 +853,7 @@ minetest.register_node("default:junglegrass", {
 	buildable_to = true,
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
 		type = "fixed",
@@ -883,7 +876,7 @@ minetest.register_node("default:cactus", {
 	tiles = {"default_cactus_top.png", "default_cactus_bottom.png", "default_cactus_side.png","default_cactus_side.png","default_cactus_side.png","default_cactus_side.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {oddly_breakable_by_hand=2,},
+	groups = {oddly_breakable_by_hand=2,deco_block=1},
 	sounds = default.node_sound_wood_defaults(),
 	paramtype = "light",
 	node_box = {
@@ -932,7 +925,7 @@ minetest.register_node("default:reeds", {
 		},
 	},
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2},
+	groups = {dig_immediate=3,flammable=2,craftitem=1},
 	sounds = default.node_sound_leaves_defaults(),
 })
 
@@ -942,7 +935,7 @@ minetest.register_node("default:quartz_ore", {
 	stack_max = 64,
  	tiles = {"default_quartz_ore.png"},
 	is_ground_content = false,
-	groups = {cracky=3,},
+	groups = {cracky=3,building_block=1},
 	drop = 'default:quartz_crystal',
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -951,7 +944,7 @@ minetest.register_node("default:quartz_block", {
 	description = "Block of Quartz",
 	stack_max = 64,
 	tiles = {"default_quartz_block_top.png", "default_quartz_block_bottom.png", "default_quartz_block_side.png"},
-	groups = {snappy=1,cracky=1,level=2,quartz_block=1},
+	groups = {snappy=1,cracky=1,level=2,quartz_block=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -960,7 +953,7 @@ minetest.register_node("default:quartz_chiseled", {
 	stack_max = 64,
 	is_ground_content = false,
 	tiles = {"default_quartz_chiseled_top.png", "default_quartz_chiseled_top.png", "default_quartz_chiseled_side.png"},
-	groups = {snappy=1,cracky=1,level=2,quartz_block=1},
+	groups = {snappy=1,cracky=1,level=2,quartz_block=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -971,7 +964,7 @@ minetest.register_node("default:quartz_pillar", {
 	is_ground_content = true,
 	on_place = minetest.rotate_node,
 	tiles = {"default_quartz_pillar_top.png", "default_quartz_pillar_top.png", "default_quartz_pillar_side.png"},
-	groups = {snappy=1,cracky=1,level=2,quartz_block=1},
+	groups = {snappy=1,cracky=1,level=2,quartz_block=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -979,7 +972,7 @@ minetest.register_node("default:bedrock", {
 	description = "Bedrock",
 	tiles = {"default_bedrock.png"},
 	stack_max = 64,
-	groups = {oddly_breakable_by_hand=5},
+	groups = {oddly_breakable_by_hand=5,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 	is_ground_content = false,
 	on_blast = function() end,
@@ -991,7 +984,7 @@ minetest.register_node("default:bookshelf", {
 	tiles = {"default_wood.png", "default_wood.png", "default_bookshelf.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=3,oddly_breakable_by_hand=2,flammable=3},
+	groups = {choppy=3,oddly_breakable_by_hand=2,flammable=3,deco_block=1},
 	drop = "default:book 3",
 	sounds = default.node_sound_wood_defaults(),
 })
@@ -1015,7 +1008,7 @@ minetest.register_node("default:slimeblock", {
 	stack_max = 64,
 	-- According to Minecraft Wiki, bouncing off a slime block from a height off 255 blocks should result in a bounce height of 50 blocks
 	-- bouncy=44 makes the player bounce up to 49.6. This value was chosen by experiment.
-	groups = {oddly_breakable_by_hand=3,dig_immediate=2,bouncy=44,fall_damage_add_percent=-100},
+	groups = {oddly_breakable_by_hand=3,dig_immediate=2,bouncy=44,fall_damage_add_percent=-100,deco_block=1},
 })
 
 minetest.register_node("default:glass", {
@@ -1026,7 +1019,7 @@ minetest.register_node("default:glass", {
 	paramtype = "light",
 	sunlight_propagates = true,
 	stack_max = 64,
-	groups = {cracky=3,oddly_breakable_by_hand=3},
+	groups = {cracky=3,oddly_breakable_by_hand=3,building_block=1},
 	sounds = default.node_sound_glass_defaults(),
 	drop = "",
 })
@@ -1064,7 +1057,7 @@ minetest.register_node("default:rail", {
                 fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 	},
 	stack_max = 64,
-	groups = {dig_immediate=2,attached_node=1,rail=1,connect_to_raillike=1,dig_by_water=1},
+	groups = {dig_immediate=2,attached_node=1,rail=1,connect_to_raillike=1,dig_by_water=1,transport=1},
 })
 
 minetest.register_node("default:ladder", {
@@ -1085,7 +1078,7 @@ minetest.register_node("default:ladder", {
 		--wall_side = = <default>
 	},
 	stack_max = 64,
-	groups = {choppy=2,oddly_breakable_by_hand=3,flammable=2},
+	groups = {choppy=2,oddly_breakable_by_hand=3,flammable=2,deco_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -1104,7 +1097,7 @@ minetest.register_node("default:vine", {
 		type = "wallmounted",
 	},
 	stack_max = 64,
-	groups = {choppy=2,oddly_breakable_by_hand=3,flammable=2},
+	groups = {choppy=2,oddly_breakable_by_hand=3,flammable=2,deco_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 	drop = "",
 	after_dig_node = function(pos, oldnode, oldmetadata, user)
@@ -1135,7 +1128,7 @@ minetest.register_node("default:wood", {
 	tiles = {"default_wood.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -1144,7 +1137,7 @@ minetest.register_node("default:darkwood", {
 	tiles = {"default_planks_big_oak.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1,building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 
@@ -1215,7 +1208,7 @@ minetest.register_node("default:water_source", {
 	freezemelt = "default:ice",
 	post_effect_color = {a=64, r=100, g=100, b=200},
 	stack_max = 64,
-	groups = {water=3, liquid=3, puts_out_fire=1, freezes=1},
+	groups = {water=3, liquid=3, puts_out_fire=1, freezes=1, not_in_creative_inventory=1},
 })
 
 minetest.register_node("default:lava_flowing", {
@@ -1290,7 +1283,7 @@ minetest.register_node("default:lava_source", {
 	damage_per_second = 4*2,
 	post_effect_color = {a=192, r=255, g=64, b=0},
 	stack_max = 64,
-	groups = {lava=3, liquid=2, igniter=3},
+	groups = {lava=3, liquid=2, igniter=3, not_in_creative_inventory=1},
 })
 
 
@@ -1324,7 +1317,7 @@ minetest.register_node("default:chest", {
 		"default_chest_side.png", "default_chest_side.png", "default_chest_front.png"},
 	paramtype2 = "facedir",
 	stack_max = 64,
-	groups = {choppy=2,oddly_breakable_by_hand=2},
+	groups = {choppy=2,oddly_breakable_by_hand=2, deco_block=1},
 	is_ground_content = false,
 	sounds = default.node_sound_wood_defaults(),
 	on_construct = function(pos)
@@ -1570,7 +1563,7 @@ minetest.register_node("default:furnace", {
 	paramtype2 = "facedir",
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, deco_block=1},
 	sounds = default.node_sound_stone_defaults(),
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
@@ -1802,7 +1795,7 @@ minetest.register_node("default:cobble", {
 	tiles = {"default_cobble.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3, stone=2},
+	groups = {cracky=3, stone=2, building_block=1, deco_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1811,7 +1804,7 @@ minetest.register_node("default:mossycobble", {
 	tiles = {"default_mossycobble.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1820,7 +1813,7 @@ minetest.register_node("default:coalblock", {
 	tiles = {"default_coal_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2, building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1829,7 +1822,7 @@ minetest.register_node("default:steelblock", {
 	tiles = {"default_steel_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=1,level=2},
+	groups = {cracky=1,level=2,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1838,7 +1831,7 @@ minetest.register_node("default:goldblock", {
 	tiles = {"default_gold_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=1},
+	groups = {cracky=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1847,7 +1840,7 @@ minetest.register_node("default:diamondblock", {
 	tiles = {"default_diamond_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=1,level=3},
+	groups = {cracky=1,level=3,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1856,7 +1849,7 @@ minetest.register_node("default:lapisblock", {
 	tiles = {"default_lapis_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=1},
+	groups = {cracky=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1865,7 +1858,7 @@ minetest.register_node("default:emeraldblock", {
 	tiles = {"default_emerald_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=1},
+	groups = {cracky=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1875,7 +1868,7 @@ minetest.register_node("default:obsidian", {
 	is_ground_content = true,
 	sounds = default.node_sound_stone_defaults(),
 	stack_max = 64,
-	groups = {cracky=4,level=2,oddly_breakable_by_hand=4},
+	groups = {cracky=4,level=2,oddly_breakable_by_hand=4,building_block=1},
 })
 
 minetest.register_node("default:dry_shrub", {
@@ -1888,7 +1881,7 @@ minetest.register_node("default:dry_shrub", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=3,attached_node=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=3,attached_node=1,dig_by_water=1,deco_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -1928,7 +1921,7 @@ minetest.register_node("default:grass", {
 	walkable = false,
 	buildable_to = true,
 	is_ground_content = true,
-	groups = {snappy=3,flammable=3,attached_node=1,dig_immediate=3,dig_by_water=1},
+	groups = {snappy=3,flammable=3,attached_node=1,dig_immediate=3,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 	after_dig_node = function(pos, oldnode, oldmetadata, user)
 	local item = user:get_wielded_item()
@@ -1943,7 +1936,7 @@ minetest.register_node("default:glowstone", {
 	tiles = {"default_glowstone.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3,building_block=1},
 	drop = {
 	max_items = 1,
 	items = {
@@ -1968,7 +1961,7 @@ minetest.register_node("default:sponge", {
 	buildable_to = false,
 	stack_max = 64,
 	sounds = default.node_sound_dirt_defaults(),
-	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=3},
+	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=3,building_block=1},
 	   	on_place = function(itemstack, placer, pointed_thing)
 		local pn = placer:get_player_name()
 		if pointed_thing.type ~= "node" then
@@ -2049,7 +2042,7 @@ minetest.register_node("default:sponge_wet", {
 	buildable_to = false,
 	stack_max = 64,
 	sounds = default.node_sound_dirt_defaults(),
-	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3},
+	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,building_block=1},
 })
 
 
@@ -2061,7 +2054,7 @@ minetest.register_node("default:ice", {
 	paramtype = "light",
 	use_texture_alpha = true,
 	stack_max = 64,
-	groups = {cracky=3,oddly_breakable_by_hand=2},
+	groups = {cracky=3,oddly_breakable_by_hand=2,building_block=1},
 	drop = "",
 	sounds = default.node_sound_glass_defaults(),
 })
@@ -2074,7 +2067,7 @@ minetest.register_node("default:packed_ice", {
 	paramtype = "light",
 	use_texture_alpha = true,
 	stack_max = 64,
-	groups = {cracky=3,oddly_breakable_by_hand=2},
+	groups = {cracky=3,oddly_breakable_by_hand=2,building_block=1},
 	drop = "",
 	sounds = default.node_sound_glass_defaults(),
 })
@@ -2101,10 +2094,6 @@ for i=0,3 do
 			end
 		end
 	end
-	local creative = 1
-	if i == 0 then
-		creative = 0
-	end
 	minetest.register_node("default:frosted_ice_"..i, {
 		description = "Frosted Ice",
 		drawtype = "glasslike",
@@ -2113,7 +2102,7 @@ for i=0,3 do
 		paramtype = "light",
 		use_texture_alpha = true,
 		stack_max = 64,
-		groups = {cracky=2, frosted_ice=1, not_in_creative_inventory=creative},
+		groups = {cracky=2, frosted_ice=1, not_in_creative_inventory=1},
 		drop = "",
 		sounds = default.node_sound_glass_defaults(),
 		on_construct = function(pos)
@@ -2150,7 +2139,7 @@ minetest.register_node("default:snow", {
 			{-0.5, -0.5, -0.5,  0.5, -0.5+2/16, 0.5},
 		},
 	},
-	groups = {crumbly=3,falling_node=1},
+	groups = {crumbly=3,falling_node=1,deco_block=1},
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name="default_grass_footstep", gain=0.4},
 	}),
@@ -2162,7 +2151,7 @@ minetest.register_node("default:snowblock", {
 	tiles = {"default_snow.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {crumbly=3},
+	groups = {crumbly=3,building_block=1},
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name="default_grass_footstep", gain=0.4},
 	}),
@@ -2185,7 +2174,7 @@ minetest.register_node("default:cobweb", {
        liquid_renewable = false,
        liquid_range = 0,
        walkable = false,
-       groups = {snappy=1,liquid=3,flammable=2},
+       groups = {snappy=1,liquid=3,flammable=2,deco_block=1},
        drop = "default:string",
 })
 

mods/default/tools.lua

@@ -36,6 +36,7 @@ minetest.register_item(":", {
 minetest.register_tool("default:pick_wood", {
 	description = "Wooden Pickaxe",
 	inventory_image = "default_tool_woodpick.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/1.2
 		full_punch_interval = 0.83333333,
@@ -49,6 +50,7 @@ minetest.register_tool("default:pick_wood", {
 minetest.register_tool("default:pick_stone", {
 	description = "Stone Pickaxe",
 	inventory_image = "default_tool_stonepick.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/1.2
 		full_punch_interval = 0.83333333,
@@ -62,6 +64,7 @@ minetest.register_tool("default:pick_stone", {
 minetest.register_tool("default:pick_steel", {
 	description = "Iron Pickaxe",
 	inventory_image = "default_tool_steelpick.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/1.2
 		full_punch_interval = 0.83333333,
@@ -73,8 +76,9 @@ minetest.register_tool("default:pick_steel", {
 	},
 })
 minetest.register_tool("default:pick_gold", {
-	description = "Gold Pickaxe",
+	description = "Golden Pickaxe",
 	inventory_image = "default_tool_goldpick.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/1.2
 		full_punch_interval = 0.83333333,
@@ -88,6 +92,7 @@ minetest.register_tool("default:pick_gold", {
 minetest.register_tool("default:pick_diamond", {
 	description = "Diamond Pickaxe",
 	inventory_image = "default_tool_diamondpick.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/1.2
 		full_punch_interval = 0.83333333,
@@ -104,6 +109,7 @@ minetest.register_tool("default:shovel_wood", {
 	description = "Wooden Shovel",
 	inventory_image = "default_tool_woodshovel.png",
 	wield_image = "default_tool_woodshovel.png^[transformR90",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		max_drop_level=0,
@@ -117,6 +123,7 @@ minetest.register_tool("default:shovel_stone", {
 	description = "Stone Shovel",
 	inventory_image = "default_tool_stoneshovel.png",
 	wield_image = "default_tool_stoneshovel.png^[transformR90",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		max_drop_level=0,
@@ -130,6 +137,7 @@ minetest.register_tool("default:shovel_steel", {
 	description = "Iron Shovel",
 	inventory_image = "default_tool_steelshovel.png",
 	wield_image = "default_tool_steelshovel.png^[transformR90",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		max_drop_level=1,
@@ -140,9 +148,10 @@ minetest.register_tool("default:shovel_steel", {
 	},
 })
 minetest.register_tool("default:shovel_gold", {
-	description = "Gold Shovel",
+	description = "Golden Shovel",
 	inventory_image = "default_tool_goldshovel.png",
 	wield_image = "default_tool_goldshovel.png^[transformR90",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		max_drop_level=0,
@@ -156,6 +165,7 @@ minetest.register_tool("default:shovel_diamond", {
 	description = "Diamond Shovel",
 	inventory_image = "default_tool_diamondshovel.png",
 	wield_image = "default_tool_diamondshovel.png^[transformR90",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		max_drop_level=1,
@@ -170,6 +180,7 @@ minetest.register_tool("default:shovel_diamond", {
 minetest.register_tool("default:axe_wood", {
 	description = "Wooden Axe",
 	inventory_image = "default_tool_woodaxe.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1.25,
 		max_drop_level=0,
@@ -182,6 +193,7 @@ minetest.register_tool("default:axe_wood", {
 minetest.register_tool("default:axe_stone", {
 	description = "Stone Axe",
 	inventory_image = "default_tool_stoneaxe.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1.25,
 		max_drop_level=0,
@@ -194,6 +206,7 @@ minetest.register_tool("default:axe_stone", {
 minetest.register_tool("default:axe_steel", {
 	description = "Iron Axe",
 	inventory_image = "default_tool_steelaxe.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/0.9
 		full_punch_interval = 1.11111111,
@@ -205,8 +218,9 @@ minetest.register_tool("default:axe_steel", {
 	},
 })
 minetest.register_tool("default:axe_gold", {
-	description = "Gold Axe",
+	description = "Golden Axe",
 	inventory_image = "default_tool_goldaxe.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1.0,
 		max_drop_level=0,
@@ -219,6 +233,7 @@ minetest.register_tool("default:axe_gold", {
 minetest.register_tool("default:axe_diamond", {
 	description = "Diamond Axe",
 	inventory_image = "default_tool_diamondaxe.png",
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1.0,
 		max_drop_level=1,
@@ -233,6 +248,7 @@ minetest.register_tool("default:axe_diamond", {
 minetest.register_tool("default:sword_wood", {
 	description = "Wooden Sword",
 	inventory_image = "default_tool_woodsword.png",
+	groups = { weapon=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.625,
 		max_drop_level=0,
@@ -245,6 +261,7 @@ minetest.register_tool("default:sword_wood", {
 minetest.register_tool("default:sword_stone", {
 	description = "Stone Sword",
 	inventory_image = "default_tool_stonesword.png",
+	groups = { weapon=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.625,
 		max_drop_level=0,
@@ -257,6 +274,7 @@ minetest.register_tool("default:sword_stone", {
 minetest.register_tool("default:sword_steel", {
 	description = "Iron Sword",
 	inventory_image = "default_tool_steelsword.png",
+	groups = { weapon=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.625,
 		max_drop_level=1,
@@ -267,8 +285,9 @@ minetest.register_tool("default:sword_steel", {
 	}
 })
 minetest.register_tool("default:sword_gold", {
-	description = "Gold Sword",
+	description = "Golden Sword",
 	inventory_image = "default_tool_goldsword.png",
+	groups = { weapon=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.625,
 		max_drop_level=0,
@@ -281,6 +300,7 @@ minetest.register_tool("default:sword_gold", {
 minetest.register_tool("default:sword_diamond", {
 	description = "Diamond Sword",
 	inventory_image = "default_tool_diamondsword.png",
+	groups = { weapon=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.625,
 		max_drop_level=1,
@@ -297,6 +317,7 @@ minetest.register_tool("default:flint_and_steel", {
 	inventory_image = "default_tool_flint_and_steel.png",
 	liquids_pointable = false,
 	stack_max = 1,
+	groups = { tool = 1 },
 	tool_capabilities = {
 		full_punch_interval = 1.0,
 		max_drop_level=0,
@@ -320,7 +341,7 @@ minetest.register_tool("default:flint_and_steel", {
 -- Fishing Pole
 minetest.register_tool("default:pole", {
 	description = "Fishing Rod",
-    groups = {},
+    groups = { tool=1 },
     inventory_image = "default_tool_fishing_pole.png",
     stack_max = 1,
     liquids_pointable = true,
@@ -418,6 +439,7 @@ minetest.register_tool("default:shears", {
 	wield_image = "default_tool_shears.png",
 	stack_max = 1,
 	max_drop_level=3,
+	groups = { tool=1 },
 	tool_capabilities = {
 	        full_punch_interval = 0.5,
 	        max_drop_level=1,

mods/dye/init.lua

@@ -63,22 +63,22 @@ local dyelocal = {}
 
 -- This collection of colors is partly a historic thing, partly something else.
 dyelocal.dyes = {
-	{"white",      "Bone Meal",     {dye=1, basecolor_white=1,   excolor_white=1,     unicolor_white=1}},
-	{"grey",       "Light Grey Dye",      {dye=1, basecolor_grey=1,    excolor_grey=1,      unicolor_grey=1}},
-	{"dark_grey",  "Grey Dye", {dye=1, basecolor_grey=1,    excolor_darkgrey=1,  unicolor_darkgrey=1}},
-	{"black",      "Ink Sac",     {dye=1, basecolor_black=1,   excolor_black=1,     unicolor_black=1}},
-	{"violet",     "Violet Dye",    {dye=1, basecolor_magenta=1, excolor_violet=1,    unicolor_violet=1}},
-	{"blue",       "Lapis Lazuli",      {dye=1, basecolor_blue=1,    excolor_blue=1,      unicolor_blue=1}},
-	{"lightblue",  "Light Blue Dye",      {dye=1, basecolor_blue=1,    excolor_blue=1,   unicolor_light_blue=1}},
-	{"cyan",       "Cyan Dye",      {dye=1, basecolor_cyan=1,    excolor_cyan=1,      unicolor_cyan=1}},
-	{"dark_green", "Cactus Green",{dye=1, basecolor_green=1,   excolor_green=1,     unicolor_dark_green=1}},
-	{"green",      "Lime Dye",     {dye=1, basecolor_green=1,   excolor_green=1,     unicolor_green=1}},
-	{"yellow",     "Dandelion Yellow",    {dye=1, basecolor_yellow=1,  excolor_yellow=1,    unicolor_yellow=1}},
-	{"brown",      "Cocoa Beans",     {dye=1, basecolor_yellow=1,  excolor_orange=1,    unicolor_dark_orange=1}},
-	{"orange",     "Orange Dye",    {dye=1, basecolor_orange=1,  excolor_orange=1,    unicolor_orange=1}},
-	{"red",        "Rose Red",       {dye=1, basecolor_red=1,     excolor_red=1,       unicolor_red=1}},
-	{"magenta",    "Magenta Dye",   {dye=1, basecolor_magenta=1, excolor_red_violet=1,unicolor_red_violet=1}},
-	{"pink",       "Pink Dye",      {dye=1, basecolor_red=1,     excolor_red=1,       unicolor_light_red=1}},
+	{"white",      "Bone Meal",     {dye=1, craftitem=1, basecolor_white=1,   excolor_white=1,     unicolor_white=1}},
+	{"grey",       "Light Grey Dye",      {dye=1, craftitem=1, basecolor_grey=1,    excolor_grey=1,      unicolor_grey=1}},
+	{"dark_grey",  "Grey Dye", {dye=1, craftitem=1, basecolor_grey=1,    excolor_darkgrey=1,  unicolor_darkgrey=1}},
+	{"black",      "Ink Sac",     {dye=1, craftitem=1, basecolor_black=1,   excolor_black=1,     unicolor_black=1}},
+	{"violet",     "Violet Dye",    {dye=1, craftitem=1, basecolor_magenta=1, excolor_violet=1,    unicolor_violet=1}},
+	{"blue",       "Lapis Lazuli",      {dye=1, craftitem=1, basecolor_blue=1,    excolor_blue=1,      unicolor_blue=1}},
+	{"lightblue",  "Light Blue Dye",      {dye=1, craftitem=1, basecolor_blue=1,    excolor_blue=1,   unicolor_light_blue=1}},
+	{"cyan",       "Cyan Dye",      {dye=1, craftitem=1, basecolor_cyan=1,    excolor_cyan=1,      unicolor_cyan=1}},
+	{"dark_green", "Cactus Green",{dye=1, craftitem=1, basecolor_green=1,   excolor_green=1,     unicolor_dark_green=1}},
+	{"green",      "Lime Dye",     {dye=1, craftitem=1, basecolor_green=1,   excolor_green=1,     unicolor_green=1}},
+	{"yellow",     "Dandelion Yellow",    {dye=1, craftitem=1, basecolor_yellow=1,  excolor_yellow=1,    unicolor_yellow=1}},
+	{"brown",      "Cocoa Beans",     {dye=1, craftitem=1, basecolor_yellow=1,  excolor_orange=1,    unicolor_dark_orange=1}},
+	{"orange",     "Orange Dye",    {dye=1, craftitem=1, basecolor_orange=1,  excolor_orange=1,    unicolor_orange=1}},
+	{"red",        "Rose Red",       {dye=1, craftitem=1, basecolor_red=1,     excolor_red=1,       unicolor_red=1}},
+	{"magenta",    "Magenta Dye",   {dye=1, craftitem=1, basecolor_magenta=1, excolor_red_violet=1,unicolor_red_violet=1}},
+	{"pink",       "Pink Dye",      {dye=1, craftitem=1, basecolor_red=1,     excolor_red=1,       unicolor_light_red=1}},
 }
 
 -- Define items
@@ -100,7 +100,7 @@ minetest.register_craftitem("dye:white", {
 	inventory_image = "dye_white.png",
 	description = "Bone Meal",
 	stack_max = 64,
-	groups = {dye=1, basecolor_white=1,   excolor_white=1,     unicolor_white=1},
+	groups = {dye=1, craftitem=1, basecolor_white=1,   excolor_white=1,     unicolor_white=1},
 	on_place = function(itemstack, user, pointed_thing) 
 		if(duengen(pointed_thing)) then
 			itemstack:take_item()

mods/farming/hoes.lua

@@ -32,6 +32,7 @@ minetest.register_tool("farming:hoe_wood", {
 			return itemstack
 		end
 	end,
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		damage_groups = { fleshy = 1, }
@@ -71,6 +72,7 @@ minetest.register_tool("farming:hoe_stone", {
 			return itemstack
 		end
 	end,
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.5,
 		damage_groups = { fleshy = 1, }
@@ -105,6 +107,7 @@ minetest.register_tool("farming:hoe_steel", {
 			return itemstack
 		end
 	end,
+	groups = { tool=1 },
 	tool_capabilities = {
 		-- 1/3
 		full_punch_interval = 0.33333333,
@@ -147,6 +150,7 @@ minetest.register_tool("farming:hoe_gold", {
 			return itemstack
 		end
 	end,
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 1,
 		damage_groups = { fleshy = 1, }
@@ -190,6 +194,7 @@ minetest.register_tool("farming:hoe_diamond", {
 			return itemstack
 		end
 	end,
+	groups = { tool=1 },
 	tool_capabilities = {
 		full_punch_interval = 0.25,
 		damage_groups = { fleshy = 1, }

mods/farming/melon.lua

@@ -3,7 +3,7 @@ minetest.register_node("farming:melon", {
 	paramtype2 = "facedir",
 	stack_max = 64,
 	tiles = {"farming_melon_top.png", "farming_melon_top.png", "farming_melon_side.png", "farming_melon_side.png", "farming_melon_side.png", "farming_melon_side.png"},
-	groups = {choppy=2, oddly_breakable_by_hand=2},
+	groups = {choppy=2, oddly_breakable_by_hand=2, building_block=1},
 	drop = {
 		max_items = 1,
 		items = {
@@ -222,6 +222,7 @@ minetest.register_craftitem("farming:melon_item", {
 minetest.register_craftitem("farming:speckled_melon", {
 	description = "Glistering Melon",
 	stack_max = 64,
+	groups = { brewitem = 1 },
 	inventory_image = "farming_melon_speckled.png",
 })
 

mods/farming/mushrooms.lua

@@ -7,7 +7,7 @@ minetest.register_node("farming:mushroom_brown", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = false,
-	groups = {dig_immediate=3,flammable=2,mushroom=1,attached_node=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,mushroom=1,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 	light_source = 1,
 	selection_box = {
@@ -25,7 +25,7 @@ minetest.register_node("farming:mushroom_red", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = false,
-	groups = {dig_immediate=3,flammable=2,mushroom=1,attached_node=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,mushroom=1,attached_node=1,dig_by_water=1,deco_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
 		type = "fixed",

mods/farming/pumpkin.lua

@@ -55,7 +55,7 @@ minetest.register_node("farming:pumpkin_face", {
 	stack_max = 64,
 	paramtype2 = "facedir",
 	tiles = {"farming_pumpkin_top.png", "farming_pumpkin_top.png", "farming_pumpkin_side.png", "farming_pumpkin_side.png", "farming_pumpkin_side.png", "farming_pumpkin_face.png"},
-	groups = {choppy=2, oddly_breakable_by_hand=2, flammable=2},
+	groups = {choppy=2, oddly_breakable_by_hand=2, flammable=2, building_block=1},
 	after_dig_node = function(pos, oldnode, oldmetadata, user)
 		local have_change = 0
 		for x=-1,1 do
@@ -273,7 +273,7 @@ minetest.register_node("farming:pumpkin_face_light", {
 	paramtype2 = "facedir",
 	light_source = 14,
 	tiles = {"farming_pumpkin_top.png", "farming_pumpkin_top.png", "farming_pumpkin_side.png", "farming_pumpkin_side.png", "farming_pumpkin_side.png", "farming_pumpkin_face_light.png"},
-	groups = {choppy=2, oddly_breakable_by_hand=2, flammable=2},
+	groups = {choppy=2, oddly_breakable_by_hand=2, flammable=2, building_block=1},
 	sounds = default.node_sound_wood_defaults(),
 })
 

mods/farming/wheat.lua

@@ -127,6 +127,7 @@ farming:add_plant("farming:wheat", {"farming:wheat_1", "farming:wheat_2", "farmi
 minetest.register_craftitem("farming:wheat_harvested", {
 	description = "Wheat",
 	inventory_image = "farming_wheat_harvested.png",
+	groups = { craftitem = 1 },
 })
 
 minetest.register_craft({

mods/fire/init.lua

@@ -9,7 +9,7 @@ minetest.register_node("fire:basic_flame", {
 	}},
 	inventory_image = "fire_basic_flame.png",
 	light_source = 14,
-	groups = {igniter=2,dig_immediate=3,dig_by_water=1},
+	groups = {igniter=2,dig_immediate=3,dig_by_water=1,not_in_creative_inventory=1},
 	drop = '',
 	walkable = false,
 	buildable_to = true,

mods/flowers/init.lua

@@ -26,7 +26,7 @@ local function add_simple_flower(name, desc, image, color)
 		paramtype = "light",
 		walkable = false,
 		stack_max = 64,
-		groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,dig_by_water=1,color=1},
+		groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,dig_by_water=1,color=1,deco_block=1},
 		sounds = default.node_sound_leaves_defaults(),
 		buildable_to = true,
 		selection_box = {
@@ -51,7 +51,7 @@ minetest.register_node("flowers:tulip_pink", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_pink=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_pink=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -70,7 +70,7 @@ minetest.register_node("flowers:tulip_red", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_red=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_red=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -90,7 +90,7 @@ minetest.register_node("flowers:tulip_white", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_white=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_white=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -112,7 +112,7 @@ minetest.register_node("flowers:allium", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_pink=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_pink=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -133,7 +133,7 @@ minetest.register_node("flowers:peony", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_pink=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_pink=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -155,7 +155,7 @@ minetest.register_node("flowers:azure_bluet", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_white=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_white=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -176,7 +176,7 @@ minetest.register_node("flowers:blue_orchid", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_blue=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,color_blue=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -197,7 +197,7 @@ minetest.register_node("flowers:fern", {
 	paramtype = "light",
 	walkable = false,
 	stack_max = 64,
-	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,dig_by_water=1},
+	groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,dig_by_water=1,deco_block=1},
 	buildable_to = true,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
@@ -246,7 +246,7 @@ function register_large(name, desc, inv_img, bot_img, colr) --change in function
         end,
         ]]
         drop = "flowers:"..name,
-        groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,colr=1, dig_by_water=1, double_bottom =1},
+        groups = {dig_immediate=3,flammable=2,flower=1,attached_node=1,colr=1, dig_by_water=1, double_bottom =1,deco_block=1,deco_block=1},
         sounds = default.node_sound_leaves_defaults(),
         selection_box = {
             type = "fixed",
@@ -295,7 +295,7 @@ minetest.register_node("flowers:pot",{
 	tiles = {"flowers_pot_top.png", "flowers_pot_bottom.png", "flowers_pot_top.png"},
 	inventory_image="flowers_pot_inventory.png",
 	paramtype = "light",
-	groups = {dig_immediate=3},
+	groups = {dig_immediate=3,deco_block=1},
 	stack_max = 16,
 	sounds = default.node_sound_defaults(),
 	after_place_node = function(pos, placer, itemstack)
@@ -343,7 +343,7 @@ minetest.register_node("flowers:waterlily", {
 	liquids_pointable = true,
 	walkable = true,
 	sunlight_propagates = true,
-	groups = {dig_immediate = 3, dig_by_water = 1, },
+	groups = {dig_immediate = 3, dig_by_water = 1, deco_block=1},
 	sounds = default.node_sound_leaves_defaults(),
 	node_placement_prediction = "",
 	node_box = {

mods/gemalde/init.lua

@@ -18,7 +18,7 @@ for n=1, N do
 
 local groups = {choppy=2, dig_immediate=3, picture=1, not_in_creative_inventory=1}
 if n == 1 then
-	groups = {choppy=2, dig_immediate=3, picture=1}
+	groups = {choppy=2, dig_immediate=3, picture=1, deco_block=1}
 end
 
 -- inivisible node

mods/hardened_clay/init.lua

@@ -24,7 +24,7 @@ minetest.register_node("hardened_clay:hardened_clay", {
 	description = "Hardened Clay",
 	tiles = {"hardened_clay.png"},
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3,hardened_clay=1,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -44,7 +44,7 @@ for _, row in ipairs(clay.dyes) do
 		minetest.register_node("hardened_clay:"..name, {
 			description = desc.." Hardened Clay",
 			tiles = {"hardened_clay_stained_"..name..".png"},
-			groups = {cracky=3,hardened_clay=1},
+			groups = {cracky=3,hardened_clay=1,building_block=1},
 			stack_max = 64,
 			sounds = default.node_sound_stone_defaults(),
 		})

mods/head/init.lua

@@ -11,7 +11,7 @@ local function addhead(node, desc)
 				{ -0.25, -0.5, -0.25, 0.25, 0.0, 0.25, },   			
 			},
 		},
-		groups = {oddly_breakable_by_hand=3, head=1},
+		groups = {oddly_breakable_by_hand=3, head=1, deco_block=1},
 		tiles = {
 			"head_"..node.."_top.png",
 			"head_"..node.."_top.png",

mods/itemframes/init.lua

@@ -99,7 +99,7 @@ minetest.register_node("itemframes:frame",{
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
-	groups = { choppy=2,dig_immediate=2 },
+	groups = { choppy=2,dig_immediate=2,deco_block=1},
 	sounds = default.node_sound_defaults(),
 	after_place_node = function(pos, placer, itemstack)
 		local meta = minetest.get_meta(pos)

mods/mcl_boats/init.lua

@@ -145,7 +145,7 @@ for w=1, #woods do
 		description = names[w],
 		inventory_image = "mcl_boats_inventory.png",
 		liquids_pointable = true,
-		groups = { boat = 1, },
+		groups = { boat = 1, transport = 1},
 		stack_max = 1,
 		on_place = function(itemstack, placer, pointed_thing)
 			if pointed_thing.type ~= "node" then

mods/mcl_clock/init.lua

@@ -31,7 +31,7 @@ function watch.register_item(name, image, creative)
 	minetest.register_tool(name, {
 		description = "Clock",
 		inventory_image = image,
-		groups = {not_in_creative_inventory=g, clock=1},
+		groups = {not_in_creative_inventory=g, tool=1, clock=1},
 		wield_image = "",
 		stack_max = 1,
 	})
@@ -73,9 +73,7 @@ end)
 
 -- Clock recipe
 minetest.register_craft({
-	description = "Clock",
 	output = 'mcl_clock:clock',
-	groups = {not_in_creative_inventory=1},
 	recipe = {
 		{'', 'default:gold_ingot', ''},
 		{'default:gold_ingot', 'mesecons:redstone', 'default:gold_ingot'},

mods/mcl_compass/init.lua

@@ -50,7 +50,7 @@ for i,img in ipairs(images) do
 		inventory_image = img,
 		wield_image = img,
 		stack_max = 1,
-		groups = {not_in_creative_inventory=inv,compass=i}
+		groups = {not_in_creative_inventory=inv,compass=i,tool=1}
 	})
 end
 

mods/mcl_end/init.lua

@@ -2,7 +2,7 @@ minetest.register_node("mcl_end:end_stone", {
 	description = "End Stone",
 	tiles = {"mcl_end_end_stone.png"},
 	stack_max = 64,
-	groups = {cracky=2},
+	groups = {cracky=2,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -11,7 +11,7 @@ minetest.register_node("mcl_end:end_bricks", {
 	tiles = {"mcl_end_end_stone_brick.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -20,7 +20,7 @@ minetest.register_node("mcl_end:purpur_block", {
 	tiles = {"mcl_end_purpur_block.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {cracky=3},
+	groups = {cracky=3,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -30,7 +30,7 @@ minetest.register_node("mcl_end:purpur_pillar", {
 	paramtype2 = "facedir",
 	is_ground_content = false,
 	tiles = {"mcl_end_purpur_pillar_top.png", "mcl_end_purpur_pillar_top.png", "mcl_end_purpur_pillar.png"},
-	groups = {cracky=3},
+	groups = {cracky=3,building_block=1},
 	sounds = default.node_sound_stone_defaults(),
 })
 

mods/mcl_fences/init.lua

@@ -22,6 +22,7 @@ mcl_fences = {}
 mcl_fences.register_fence = function(id, fence_name, fence_gate_name, texture, fence_image, gate_image, groups, connects_to, sounds)
 	if groups == nil then groups = {} end
 	groups.fence = 1
+	groups.deco_block = 1
 	if connects_to == nil then connects_to = {} end
 	table.insert(connects_to, "group:solid")
 	table.insert(connects_to, "group:fence")

mods/mcl_hoppers/init.lua

@@ -479,6 +479,8 @@ minetest.register_abm({
 minetest.register_craftitem("mcl_hoppers:hopper_item", {
 	description = "Hopper",
 	inventory_image = "mcl_hoppers_item.png",
+	-- TODO: Move to redstone category
+	groups = { deco_block = 1 },
 	on_place = function(itemstack, placer, pointed_thing)
 		local pos  = pointed_thing.under
 		local pos2 = pointed_thing.above

mods/mcl_jukebox/init.lua

@@ -77,7 +77,7 @@ minetest.register_node("mcl_jukebox:jukebox", {
 	description = "Jukebox",
 	tiles = {"mcl_jukebox_top.png", "mcl_jukebox_side.png", "mcl_jukebox_side.png"},
 	sounds = default.node_sound_wood_defaults(),
-	groups = {oddly_breakable_by_hand=1, flammable=1, choppy=3},
+	groups = {oddly_breakable_by_hand=1, flammable=1, choppy=3, deco_block=1},
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()

mods/mcl_minecarts/init.lua

@@ -276,7 +276,7 @@ minetest.register_craftitem("mcl_minecarts:minecart", {
 		itemstack:take_item()
 		return itemstack
 	end,
-	groups = { minecart = 1 },
+	groups = { minecart = 1, transport = 1},
 })
 
 minetest.register_craft({

mods/mcl_minecarts/rails.lua

@@ -14,7 +14,7 @@ minetest.register_node("mcl_minecarts:golden_rail", {
 		-- but how to specify the dimensions for curved and sideways rails?
 		fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 	},
-	groups = {dig_immediate = 2, attached_node = 1, rail = 1, connect_to_raillike = 1, dig_by_water = 1},
+	groups = {dig_immediate = 2, attached_node = 1, rail = 1, connect_to_raillike = 1, dig_by_water = 1, transport = 1},
 	
 	after_place_node = function(pos, placer, itemstack)
 		if not mesecon then

mods/mcl_mobitems/init.lua

@@ -124,6 +124,7 @@ minetest.register_craftitem("mcl_mobitems:blaze_rod", {
 	description = "Blaze Rod",
 	wield_image = "mcl_mobitems_blaze_rod.png",
 	inventory_image = "mcl_mobitems_blaze_rod.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 
@@ -131,6 +132,7 @@ minetest.register_craftitem("mcl_mobitems:blaze_powder", {
 	description = "Blaze Powder",
 	wield_image = "mcl_mobitems_blaze_powder.png",
 	inventory_image = "mcl_mobitems_blaze_powder.png",
+	groups = { brewitem = 1 },
 	stack_max = 64,
 })
 
@@ -138,6 +140,7 @@ minetest.register_craftitem("mcl_mobitems:magma_cream", {
 	description = "Magma Cream",
 	wield_image = "mcl_mobitems_magma_cream.png",
 	inventory_image = "mcl_mobitems_magma_cream.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 
@@ -145,6 +148,7 @@ minetest.register_craftitem("mcl_mobitems:ghast_tear", {
 	description = "Ghast Tear",
 	wield_image = "mcl_mobitems_ghast_tear.png",
 	inventory_image = "mcl_mobitems_ghast_tear.png",
+	groups = { brewitem = 1 },
 	stack_max = 64,
 })
 
@@ -152,6 +156,7 @@ minetest.register_craftitem("mcl_mobitems:nether_star", {
 	description = "Nether Star",
 	wield_image = "mcl_mobitems_nether_star.png",
 	inventory_image = "mcl_mobitems_nether_star.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 
@@ -159,6 +164,7 @@ minetest.register_craftitem("mcl_mobitems:leather", {
 	description = "Leather",
 	wield_image = "mcl_mobitems_leather.png",
 	inventory_image = "mcl_mobitems_leather.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 
@@ -166,6 +172,7 @@ minetest.register_craftitem("mcl_mobitems:feather", {
 	description = "Feather",
 	wield_image = "mcl_mobitems_feather.png",
 	inventory_image = "mcl_mobitems_feather.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 
@@ -173,6 +180,7 @@ minetest.register_craftitem("mcl_mobitems:rabbit_hide", {
 	description = "Rabbit Hide",
 	wield_image = "mcl_mobitems_rabbit_hide.png",
 	inventory_image = "mcl_mobitems_rabbit_hide.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 
@@ -180,6 +188,7 @@ minetest.register_craftitem("mcl_mobitems:rabbit_foot", {
 	description = "Rabbit's Foot",
 	wield_image = "mcl_mobitems_rabbit_foot.png",
 	inventory_image = "mcl_mobitems_rabbit_foot.png",
+	groups = { craftitem = 1 },
 	stack_max = 64,
 })
 

mods/mcl_potions/init.lua

@@ -2,6 +2,7 @@ minetest.register_craftitem("mcl_potions:fermented_spider_eye", {
 	description = "Fermented Spider Eye",
 	wield_image = "mcl_potions_spider_eye_fermented.png",
 	inventory_image = "mcl_potions_spider_eye_fermented.png",
+	groups = { brewitem = 1 },
 	stack_max = 64,
 })
 

mods/mcl_throwing/init.lua

@@ -39,7 +39,7 @@ minetest.register_tool("mcl_throwing:bow", {
 		itemstack:add_wear(wear)
 		return itemstack
 	end,
-	groups = {weapon_ranged=1,},
+	groups = {weapon=1,weapon_ranged=1},
 	on_use = function(itemstack, user, pointed_thing)
 		local wear = itemstack:get_wear()
 		itemstack:add_wear(wear)

mods/minetest-3d_armor/3d_armor_stand/init.lua

@@ -94,7 +94,7 @@ minetest.register_node("3d_armor_stand:armor_stand", {
 		type = "fixed",
 		fixed = {-0.5,-0.5,-0.5, 0.5,1.4,0.5}
 	},
-	groups = {choppy=2, oddly_breakable_by_hand=2},
+	groups = {choppy=2, oddly_breakable_by_hand=2, deco_block=1},
 	sounds = default.node_sound_wood_defaults(),
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

mods/mobs/crafts.lua

@@ -5,5 +5,8 @@ local S = mobs.intllib
 minetest.register_craftitem("mobs:nametag", {
 	description = S("Name Tag"),
 	inventory_image = "mobs_nametag.png",
+	wield_image = "mobs_nametag.png",
+	stack_max = 64,
+	groups = { tool=1 },
 })
 

mods/redstone/mesecons_materials/init.lua

@@ -2,6 +2,7 @@ minetest.register_craftitem("mesecons_materials:slimeball", {
 	image = "jeija_glue.png",
 	on_place_on_ground = minetest.craftitem_place_item,
     	description="Slimeball",
+	groups = { craftitem = 1 },
 })
 
 minetest.register_craft({

mods/signs/init.lua

@@ -32,7 +32,7 @@ local signs_yard = {
     {delta = {x = 0.05, y = 0, z = 0}, yaw = math.pi / 2},
 }
 
-local sign_groups = {choppy=2, dig_immediate=2}
+local sign_groups = {choppy=2, dig_immediate=2, deco_block=1}
 
 local construct_sign = function(pos)
     local meta = minetest.get_meta(pos)
@@ -167,7 +167,7 @@ minetest.register_node("signs:sign_yard", {
     }},
     selection_box = {type = "fixed", fixed = {-0.45, -0.15, -0.049, 0.45, 0.45, 0.049}},
     tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
-    groups = {choppy=2, dig_immediate=2},
+    groups = {choppy=2, dig_immediate=2, deco_block=1},
     drop = "signs:sign_wall",
 	stack_max = 16,
 

mods/stairs/init.lua

@@ -11,6 +11,7 @@ stairs = {}
 
 function stairs.register_stair(subname, recipeitem, groups, images, description, sounds)
 	groups.stair = 1
+	groups.building_block = 1
 	minetest.register_node(":stairs:stair_" .. subname, {
 		description = description,
 		drawtype = "mesh",
@@ -100,6 +101,7 @@ local slab_trans_dir_place = {[0] = 0, 20, 12, 16, 4, 8}
 
 function stairs.register_slab(subname, recipeitem, groups, images, description, sounds)
 	groups.slab = 1
+	groups.building_block = 1
 	minetest.register_node(":stairs:slab_" .. subname, {
 		description = description,
 		drawtype = "nodebox",

mods/torches/init.lua

@@ -19,7 +19,7 @@ minetest.register_node(":default:torch", {
 	walkable = false,
 	liquids_pointable = false,
 	light_source = 13,
-	groups = {choppy=2, dig_immediate=3, flammable=1, attached_node=1, torch=1, dig_by_water=1,},
+	groups = {choppy=2, dig_immediate=3, flammable=1, attached_node=1, torch=1, dig_by_water=1, deco_block=1},
 	drop = "default:torch",
 	selection_box = {
 		type = "wallmounted",

mods/vessels/init.lua

@@ -14,7 +14,7 @@ minetest.register_node("vessels:glass_bottle", {
 		type = "fixed",
 		fixed = {-0.25, -0.5, -0.25, 0.25, 0.4, 0.25}
 	},
-	groups = {vessel=1,dig_immediate=3,attached_node=1},
+	groups = {vessel=1,dig_immediate=3,attached_node=1,brewitem=1},
 	sounds = default.node_sound_glass_defaults(),
 })
 

mods/wallet/init.lua

@@ -111,7 +111,7 @@ local function register_wall(nodename, name, texture, invtex)
 			is_ground_content = false,
 			tiles = {texture},
 			paramtype = "light",
-			groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1},
+			groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,not_in_creative_inventory=1},
 			drop = nodename,
 			node_box = {
 				type = "fixed",
@@ -130,7 +130,7 @@ local function register_wall(nodename, name, texture, invtex)
 		tiles = {texture},
 		paramtype = "light",
 		is_ground_content = false,
-		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1},
+		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,not_in_creative_inventory=1},
 		drop = nodename,
 		node_box = {
 			type = "fixed",
@@ -148,7 +148,7 @@ local function register_wall(nodename, name, texture, invtex)
 		tiles = {texture},
 		paramtype = "light",
 		is_ground_content = false,
-		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1},
+		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,not_in_creative_inventory=1},
 		drop = nodename,
 		node_box = {
 			type = "fixed",
@@ -162,6 +162,7 @@ local function register_wall(nodename, name, texture, invtex)
 		description = name,
 		paramtype = "light",
 		is_ground_content = false,
+		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,deco_block=1},
 		tiles = {texture},
 		inventory_image = invtex,
 		stack_max = 64,

mods/wool/init.lua

@@ -38,7 +38,7 @@ for _, row in ipairs(wool.dyes) do
 			stack_max = 64,
 			is_ground_content = false,
 			tiles = {"wool_"..texture..".png"},
-			groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=1,wool=1},
+			groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=1,wool=1,building_block=1},
 			sounds = default.node_sound_defaults(),
 		})
 		minetest.register_node("wool:"..name.."_carpet", {
@@ -47,7 +47,7 @@ for _, row in ipairs(wool.dyes) do
 			is_ground_content = false,
 			tiles = {"wool_"..texture..".png"},
 			wield_image = "wool_"..name..".png",
-			groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=1,carpet=1},
+			groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=1,carpet=1,deco_block=1},
 			sounds = default.node_sound_defaults(),
 			paramtype = "light",
 			stack_max = 64,

mods/xpanes/init.lua

@@ -91,6 +91,7 @@ function xpanes.register_pane(name, def)
 
 	local flatgroups = table.copy(def.groups)
 	flatgroups.pane = 1
+	flatgroups.deco_block = 1
 	minetest.register_node(":xpanes:" .. name .. "_flat", {
 		description = def.description,
 		drawtype = "nodebox",