Sort items into correct categories (#2612)

game_api.txt

@@ -103,6 +103,13 @@ The contents of `creative.formspec_add` is appended to every creative inventory
 page. Mods can use it to add additional formspec elements onto the default
 creative inventory formspec to be drawn after each update.
 
+Group overrides can be used for any registered item, node or tool. Use one of
+the groups stated below to pick which category it will appear in.
+
+	node = 1      -- Appears in the Nodes category
+	tool = 1      -- Appears in the Tools category
+	craftitem = 1 -- Appears in the Items category
+
 
 Chests API
 ----------

mods/creative/inventory.lua

@@ -199,10 +199,29 @@ function creative.register_tab(name, title, items)
 	})
 end
 
+-- Sort registered items
+local registered_nodes = {}
+local registered_tools = {}
+local registered_craftitems = {}
+
+minetest.register_on_mods_loaded(function()
+	for name, def in pairs(minetest.registered_items) do
+		local group = def.groups or {}
+
+		if group.node or minetest.registered_nodes[name] then
+			registered_nodes[name] = def
+		elseif group.tool or minetest.registered_tools[name] then
+			registered_tools[name] = def
+		elseif group.craftitem or minetest.registered_craftitems[name] then
+			registered_craftitems[name] = def
+		end
+	end
+end)
+
 creative.register_tab("all", S("All"), minetest.registered_items)
-creative.register_tab("nodes", S("Nodes"), minetest.registered_nodes)
+creative.register_tab("nodes", S("Nodes"), registered_nodes)
-creative.register_tab("tools", S("Tools"), minetest.registered_tools)
+creative.register_tab("tools", S("Tools"), registered_tools)
-creative.register_tab("craftitems", S("Items"), minetest.registered_craftitems)
+creative.register_tab("craftitems", S("Items"), registered_craftitems)
 
 local old_homepage_name = sfinv.get_homepage_name
 function sfinv.get_homepage_name(player)

mods/doors/init.lua

@@ -457,7 +457,7 @@ doors.register("door_wood", {
 		tiles = {{ name = "doors_door_wood.png", backface_culling = true }},
 		description = S("Wooden Door"),
 		inventory_image = "doors_item_wood.png",
-		groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 2},
+		groups = {node = 1, choppy = 2, oddly_breakable_by_hand = 2, flammable = 2},
 		recipe = {
 			{"group:wood", "group:wood"},
 			{"group:wood", "group:wood"},
@@ -470,7 +470,7 @@ doors.register("door_steel", {
 		description = S("Steel Door"),
 		inventory_image = "doors_item_steel.png",
 		protected = true,
-		groups = {cracky = 1, level = 2},
+		groups = {node = 1, cracky = 1, level = 2},
 		sounds = default.node_sound_metal_defaults(),
 		sound_open = "doors_steel_door_open",
 		sound_close = "doors_steel_door_close",
@@ -485,7 +485,7 @@ doors.register("door_glass", {
 		tiles = {"doors_door_glass.png"},
 		description = S("Glass Door"),
 		inventory_image = "doors_item_glass.png",
-		groups = {cracky=3, oddly_breakable_by_hand=3},
+		groups = {node = 1, cracky=3, oddly_breakable_by_hand=3},
 		sounds = default.node_sound_glass_defaults(),
 		sound_open = "doors_glass_door_open",
 		sound_close = "doors_glass_door_close",
@@ -500,7 +500,7 @@ doors.register("door_obsidian_glass", {
 		tiles = {"doors_door_obsidian_glass.png"},
 		description = S("Obsidian Glass Door"),
 		inventory_image = "doors_item_obsidian_glass.png",
-		groups = {cracky=3},
+		groups = {node = 1, cracky=3},
 		sounds = default.node_sound_glass_defaults(),
 		sound_open = "doors_glass_door_open",
 		sound_close = "doors_glass_door_close",

mods/xpanes/init.lua

@@ -223,7 +223,7 @@ if minetest.get_modpath("doors") then
 		description = S("Steel Bar Door"),
 		inventory_image = "xpanes_item_steel_bar.png",
 		protected = true,
-		groups = {cracky = 1, level = 2},
+		groups = {node = 1, cracky = 1, level = 2},
 		sounds = default.node_sound_metal_defaults(),
 		sound_open = "xpanes_steel_bar_door_open",
 		sound_close = "xpanes_steel_bar_door_close",
@@ -241,7 +241,7 @@ if minetest.get_modpath("doors") then
 		tile_front = "xpanes_trapdoor_steel_bar.png",
 		tile_side = "xpanes_trapdoor_steel_bar_side.png",
 		protected = true,
-		groups = {cracky = 1, level = 2, door = 1},
+		groups = {node = 1, cracky = 1, level = 2, door = 1},
 		sounds = default.node_sound_metal_defaults(),
 		sound_open = "xpanes_steel_bar_door_open",
 		sound_close = "xpanes_steel_bar_door_close",