Bump version

API.md

@@ -17,9 +17,7 @@ i3.new_tab("stuff", {
 	-- Determine if the tab is visible by a player, `false` or `nil` hide the tab
 	access = function(player, data)
 		local name = player:get_player_name()
-		if name == "singleplayer" then
-			return false
-		end
+		return name == "singleplayer"
 	end,
 
 	formspec = function(player, data, fs)

README.md

@@ -7,7 +7,7 @@
 This mod features a modern, powerful inventory menu with a good user experience.
 **`i3`** provides a rich [**API**](https://github.com/minetest-mods/i3/blob/master/API.md) for mod developers who want to extend it.
 
-This mod requires **Minetest 5.4+**
+This mod requires **Minetest 5.6+**
 
 #### List of features:
    - Crafting Guide (survival mode only)
@@ -43,6 +43,8 @@ To use this mod in the best conditions:
 If the inventory's font size is too big on certain setups (namely Windows 10/11 or 144 DPI display), you should lower the
 value of the setting `display_density_factor` in your `minetest.conf`. Note that the change is applied after restart.
 
+You can also use the font size slider in the inventory, settings window. 
+
 #### Notes
 
 `i3` uses a larger inventory than the usual inventories in Minetest games.

init.lua

@@ -13,20 +13,21 @@ print[[
 local modpath = core.get_modpath"i3"
 local http = core.request_http_api()
 local storage = core.get_mod_storage()
-local _loadfile = dofile(modpath .. "/src/operators.lua")
+local _loadfile = dofile(modpath .. "/src/preprocessor.lua")
 
 local function lf(path)
 	return assert(_loadfile(modpath .. path))
 end
 
 i3 = {
+	version = 180,
 	data = core.deserialize(storage:get_string"data") or {},
 
 	settings = {
 		debug_mode = false,
 		max_favs = 6,
 		max_waypoints = 30,
-		min_fs_version = 4,
+		min_fs_version = 6,
 		item_btn_size = 1.1,
 		drop_bag_on_die = true,
 		save_interval = 600, -- Player data save interval (in seconds)
@@ -51,9 +52,9 @@ i3 = {
 	saves = { -- Metadata to save
 		bag = true,
 		home = true,
+		font_size = true,
 		waypoints = true,
 		inv_items = true,
-		drop_items = true,
 		known_recipes = true,
 	},
 
@@ -63,7 +64,7 @@ i3 = {
 		caches = lf"/src/caches.lua",
 		callbacks = lf"/src/callbacks.lua",
 		common = lf"/src/common.lua",
-		compress = lf"/src/compress.lua",
+		compress = lf"/src/compression.lua",
 		detached = lf"/src/detached_inv.lua",
 		fields = lf"/src/fields.lua",
 		groups = lf"/src/groups.lua",
@@ -82,6 +83,7 @@ i3 = {
 
 	tabs = {},
 	cubes = {},
+	groups = {},
 	plants = {},
 	modules = {},
 	craft_types = {},

src/api.lua

@@ -167,6 +167,13 @@ function i3.set_fs(player)
 		sort_inventory(player, data)
 	end
 
+	for i, tab in ipairs(i3.tabs) do
+		if data.tab == i and tab.access and not tab.access(player, data) then
+			data.tab = 1
+			break
+		end
+	end
+
 	local fs = make_fs(player, data)
 	player:set_inventory_formspec(fs)
 end
@@ -221,8 +228,8 @@ function i3.set_tab(player, tabname)
 		return
 	end
 
-	for i, def in ipairs(i3.tabs) do
-		if def.name == tabname then
+	for i, tab in ipairs(i3.tabs) do
+		if tab.name == tabname then
 			data.tab = i
 			return
 		end
@@ -337,7 +344,7 @@ end
 i3.add_sorting_method("alphabetical", {
 	description = S"Sort items by name (A-Z)",
 	func = function(list, data)
-		sorter(list, data.reverse_sorting, 1)
+		sorter(list, data, 1)
 		return list
 	end
 })
@@ -345,7 +352,7 @@ i3.add_sorting_method("alphabetical", {
 i3.add_sorting_method("numerical", {
 	description = S"Sort items by number of items per stack",
 	func = function(list, data)
-		sorter(list, data.reverse_sorting, 2)
+		sorter(list, data, 2)
 		return list
 	end,
 })

src/caches.lua

@@ -1,11 +1,10 @@
-local PNG = i3.files.styles()
 local replacements = {fuel = {}}
 local http = ...
 
 IMPORT("maxn", "copy", "insert", "sort", "match", "sub")
-IMPORT("is_group", "extract_groups", "item_has_groups", "groups_to_items")
-IMPORT("fmt", "reg_items", "reg_aliases", "reg_nodes", "draw_cube", "ItemStack")
-IMPORT("true_str", "true_table", "is_table", "valid_item", "table_merge", "table_replace", "rcp_eq")
+IMPORT("true_str", "is_table", "valid_item", "table_merge", "table_replace", "rcp_eq")
+IMPORT("fmt", "reg_items", "reg_aliases", "reg_nodes", "is_cube", "get_cube", "ItemStack")
+IMPORT("is_group", "extract_groups", "item_has_groups", "groups_to_items", "get_group_stereotype")
 
 local function get_burntime(item)
 	return core.get_craft_result{method = "fuel", items = {item}}.time
@@ -23,10 +22,56 @@ local function cache_fuel(item)
 	end
 end
 
-local function get_item_usages(item, recipe, added)
-	local groups = extract_groups(item)
+local function cache_groups(group, groups)
+	i3.groups[group] = {}
+	i3.groups[group].groups = groups
+	i3.groups[group].items = groups_to_items(groups)
+
+	if #groups == 1 then
+		i3.groups[group].stereotype = get_group_stereotype(groups[1])
+	end
+
+	local items = i3.groups[group].items
+	if #items <= 1 then return end
+
+	local px, lim, c = 64, 10, 0
+	local sprite = "[combine:WxH"
+
+	for _, item in ipairs(items) do
+		local def = reg_items[item]
+		local tiles = def.tiles or def.tile_images
+		local texture = true_str(def.inventory_image) and def.inventory_image --or tiles[1]
+
+		if def.drawtype and is_cube(def.drawtype) then
+			texture = get_cube(tiles)
+		end
+
+		if texture then
+			texture = texture:gsub("%^", "\\^"):gsub(":", "\\:") .. fmt("\\^[resize\\:%ux%u", px, px)
+			sprite = sprite .. fmt(":0,%u=%s", c * px, texture)
+			c++
+			if c == lim then break end
+		end
+	end
+
+	if c > 1 then
+		sprite = sprite:gsub("WxH", px .. "x" .. px * c)
+
+		i3.groups[group].sprite = sprite
+		i3.groups[group].count = c
+	end
+end
+
+local function get_item_usages(item, recipe, added)
+	if is_group(item) then
+		local group = item:sub(7)
+		local group_cache = i3.groups[group]
+		local groups = group_cache and group_cache.groups or extract_groups(item)
+
+		if not group_cache then
+			cache_groups(group, groups)
+		end
 
-	if groups then
 		for name, def in pairs(reg_items) do
 			if not added[name] and valid_item(def) and item_has_groups(def.groups, groups) then
 				local usage = copy(recipe)
@@ -181,7 +226,7 @@ core.register_craft = function(def)
 
 	if is_group(output[1]) then
 		groups = extract_groups(output[1])
-		output = groups_to_items(groups, true)
+		output = groups_to_items(groups)
 	end
 
 	for i = 1, #output do
@@ -242,7 +287,7 @@ local function resolve_aliases(hash)
 			end
 		end
 
-		if newname ~= "" and i3.recipes_cache[oldname] and not hash[newname] then
+		if newname ~= "" and i3.recipes_cache[oldname] and reg_items[newname] and not hash[newname] then
 			insert(i3.init_items, newname)
 		end
 	end
@@ -284,40 +329,20 @@ local function init_recipes()
 	end
 end
 
-local function get_cube(tiles)
-	if not true_table(tiles) then
-		return PNG.blank
-	end
-
-	local top = tiles[1] or PNG.blank
-	if is_table(top) then
-		top = top.name or top.image
-	end
-
-	local left = tiles[3] or top or PNG.blank
-	if is_table(left) then
-		left = left.name or left.image
-	end
-
-	local right = tiles[5] or left or PNG.blank
-	if is_table(right) then
-		right = right.name or right.image
-	end
-
-	return draw_cube(top, left, right)
-end
-
 local function init_cubes()
 	for name, def in pairs(reg_nodes) do
 		if def then
 			local id = core.get_content_id(name)
+			local tiles = def.tiles or def.tile_images
 
-			if def.drawtype == "normal" or def.drawtype == "liquid" or
-					sub(def.drawtype, 1, 9) == "glasslike" or
-					sub(def.drawtype, 1, 8) == "allfaces" then
-				i3.cubes[id] = get_cube(def.tiles)
+			if is_cube(def.drawtype) then
+				i3.cubes[id] = get_cube(tiles)
 			elseif sub(def.drawtype, 1, 9) == "plantlike" or sub(def.drawtype, 1, 8) == "firelike" then
-				i3.plants[id] = def.inventory_image .. "^\\[resize:16x16"
+				local texture = true_str(def.inventory_image) and def.inventory_image or tiles[1]
+
+				if texture then
+					i3.plants[id] = texture
+				end
 			end
 		end
 	end

src/callbacks.lua

@@ -149,6 +149,7 @@ local function init_data(player, info)
 	data.itab            = 1
 	data.subcat          = 1
 	data.scrbar_inv      = 0
+	data.font_size       = data.font_size or 0
 	data.lang_code       = get_lang_code(info)
 	data.fs_version      = info.formspec_version
 

src/common.lua

@@ -9,6 +9,14 @@ local fmt, find, match, gmatch, sub, split, lower, upper =
 	string.format, string.find, string.match, string.gmatch,
 	string.sub, string.split, string.lower, string.upper
 
+if not core.registered_privileges.creative then
+	core.register_privilege("creative", {
+		description = "Allow player to use creative inventory",
+		give_to_singleplayer = false,
+		give_to_admin = false,
+	})
+end
+
 local old_is_creative_enabled = core.is_creative_enabled
 
 function core.is_creative_enabled(name)
@@ -69,6 +77,16 @@ local function toupper(str)
 	return str:gsub("%f[%w]%l", upper):gsub("_", " ")
 end
 
+local function utf8_len(str)
+	local c = 0
+
+	for _ in str:gmatch"[%z\1-\127\194-\244][\128-\191]*" do -- Arguably working duct-tape code
+		c++
+	end
+
+	return c
+end
+
 local function get_bag_description(data, stack)
 	local desc = translate(data.lang_code, stack:get_description())
 	      desc = split(desc, "(")[1] or desc
@@ -101,7 +119,7 @@ local function search(data)
 	for i = 1, #data.items_raw do
 		local item = data.items_raw[i]
 		local def = reg_items[item]
-		local desc = lower(translate(data.lang_code, def and def.description)) or ""
+		local desc = lower(translate(data.lang_code, def.description)) or ""
 		local search_in = fmt("%s %s", item, desc)
 		local temp, j, to_add = {}, 1
 
@@ -228,10 +246,8 @@ local function is_group(item)
 end
 
 local function extract_groups(str)
-	if sub(str, 1, 6) == "group:" then
 	return split(sub(str, 7), ",")
 end
-end
 
 local function item_has_groups(item_groups, groups)
 	for i = 1, #groups do
@@ -247,9 +263,7 @@ local function valid_item(def)
 		def.description and def.description ~= ""
 end
 
-local function groups_to_items(groups, get_all)
-	if not get_all and #groups == 1 then
-		local group = groups[1]
+local function get_group_stereotype(group)
 	local stereotype = i3.group_stereotypes[group]
 	local def = reg_items[stereotype]
 
@@ -258,19 +272,47 @@ local function groups_to_items(groups, get_all)
 	end
 end
 
+local function groups_to_items(groups)
 	local names = {}
 
 	for name, def in pairs(reg_items) do
 		if valid_item(def) and item_has_groups(def.groups, groups) then
-			if get_all then
 			insert(names, name)
-			else
-				return name
-			end
 		end
 	end
 
-	return get_all and names or ""
+	sort(names)
+
+	return names
+end
+
+local function is_cube(drawtype)
+	return drawtype == "normal" or drawtype == "liquid" or
+		sub(drawtype, 1, 9) == "glasslike" or
+		sub(drawtype, 1, 8) == "allfaces"
+end
+
+local function get_cube(tiles)
+	if not true_table(tiles) then
+		return "i3_blank.png"
+	end
+
+	local top = tiles[1] or "i3_blank.png"
+	if is_table(top) then
+		top = top.name or top.image
+	end
+
+	local left = tiles[3] or top or "i3_blank.png"
+	if is_table(left) then
+		left = left.name or left.image
+	end
+
+	local right = tiles[5] or left or "i3_blank.png"
+	if is_table(right) then
+		right = right.name or right.image
+	end
+
+	return core.inventorycube(top, left, right)
 end
 
 local function apply_recipe_filters(recipes, player)
@@ -377,7 +419,8 @@ local function craft_stack(player, data, craft_rcp)
 		if is_group(name) then
 			items = {}
 			local groups = extract_groups(name)
-			local item_groups = groups_to_items(groups, true)
+			local groupname = name:sub(7)
+			local item_groups = i3.groups[groupname].items or groups_to_items(groups)
 			local remaining = count
 
 			for _, item in ipairs(item_groups) do
@@ -439,15 +482,16 @@ local function get_sorting_idx(name)
 	return idx
 end
 
-local function sorter(inv, reverse, mode)
+local function sorter(inv, data, mode)
 	sort(inv, function(a, b)
 		if mode == 1 then
-			a, b = a:get_name(), b:get_name()
+			a = translate(data.lang_code, a:get_short_description())
+			b = translate(data.lang_code, b:get_short_description())
 		else
 			a, b = a:get_count(), b:get_count()
 		end
 
-		if reverse then
+		if data.reverse_sorting then
 			return a > b
 		end
 
@@ -514,35 +558,12 @@ local function compress_items(list, start_i)
 	return new_inv
 end
 
-local function drop_items(player, inv, list, start_i, rej, remove)
-	for i = start_i, #list do
-		local stack = list[i]
-		local name = stack:get_name()
-
-		for _, it in ipairs(rej) do
-			if name == it then
-				if not remove then
-					spawn_item(player, stack)
-				end
-
-				inv:set_stack("main", i, ItemStack(""))
-			end
-		end
-	end
-
-	return inv:get_list"main"
-end
-
 local function sort_inventory(player, data)
 	local inv = player:get_inventory()
 	local list = inv:get_list"main"
 	local size = inv:get_size"main"
 	local start_i = data.ignore_hotbar and (i3.settings.hotbar_len + 1) or 1
 
-	if true_table(data.drop_items) then
-		list = drop_items(player, inv, list, start_i, data.drop_items, true)
-	end
-
 	if data.inv_compress then
 		list = compress_items(list, start_i)
 	else
@@ -573,6 +594,7 @@ local function reset_data(data)
 	data.scrbar_rcp    = 1
 	data.scrbar_usg    = 1
 	data.query_item    = nil
+	data.enable_search = nil
 	data.recipes       = nil
 	data.usages        = nil
 	data.export_rcp    = nil
@@ -633,6 +655,7 @@ local _ = {
 	extract_groups = extract_groups,
 	item_has_groups = item_has_groups,
 	groups_to_items = groups_to_items,
+	get_group_stereotype = get_group_stereotype,
 
 	-- Compression
 	compressible = compressible,
@@ -660,6 +683,8 @@ local _ = {
 	msg = msg,
 
 	-- Misc. functions
+	is_cube = is_cube,
+	get_cube = get_cube,
 	ItemStack = ItemStack,
 	valid_item = valid_item,
 	spawn_item = spawn_item,
@@ -712,6 +737,7 @@ local _ = {
 	match = string.match,
 	gmatch = string.gmatch,
 	toupper = toupper,
+	utf8_len = utf8_len,
 
 	-- Table
 	maxn = table.maxn,

src/fields.lua

@@ -19,11 +19,6 @@ local function inv_fields(player, data, fields)
 		return
 	end
 
-	if fields.drop_items then
-		local items = split(fields.drop_items, ",")
-		data.drop_items = items
-	end
-
 	for field in pairs(fields) do
 		if sub(field, 1, 4) == "btn_" then
 			data.subcat = indexof(i3.categories, sub(field, 5))
@@ -95,6 +90,10 @@ local function inv_fields(player, data, fields)
 		data.waypoint_see = nil
 		data.bag_rename = nil
 
+		if data.filter == "" then
+			data.enable_search = nil
+		end
+
 	elseif fields.trash then
 		data.show_settings = nil
 		data.confirm_trash = true
@@ -154,6 +153,9 @@ local function inv_fields(player, data, fields)
 	elseif fields.bag_rename then
 		data.bag_rename = true
 
+	elseif fields.sb_font_size then
+		data.font_size = tonumber(fields.sb_font_size:match"-?%d+$")
+
 	elseif fields.confirm_rename then
 		local bag = get_detached_inv("bag", name)
 		local bagstack = bag:get_stack("main", 1)
@@ -215,10 +217,10 @@ local function inv_fields(player, data, fields)
 	return set_fs(player)
 end
 
-local function select_item(player, data, _f)
+local function select_item(player, data, fields)
 	local item
 
-	for field in pairs(_f) do
+	for field in pairs(fields) do
 		if find(field, ":") then
 			item = field
 			break
@@ -309,13 +311,21 @@ end
 local function rcp_fields(player, data, fields)
 	local sb_rcp, sb_usg = fields.scrbar_rcp, fields.scrbar_usg
 
+	if fields.filter and fields.filter == "" then
+		data.enable_search = nil
+	end
+
 	if fields.cancel then
 		reset_data(data)
 
 	elseif fields.exit then
 		data.query_item = nil
 
-	elseif fields.key_enter_field == "filter" or fields.search then
+	elseif fields.enable_search then
+		data.enable_search = true
+		return set_fs(player)
+
+	elseif fields.filter and (fields.key_enter_field == "filter" or fields.search) then
 		if fields.filter == "" then
 			reset_data(data)
 			return set_fs(player)

src/groups.lua

@@ -11,6 +11,7 @@ i3.group_stereotypes = {
 	stone = "default:stone",
 	leaves = "default:leaves",
 	coal = "default:coal_lump",
+	fence = "default:fence_wood",
 	vessel = "vessels:glass_bottle",
 	flower = "flowers:dandelion_yellow",
 	water_bucket = "bucket:bucket_water",
@@ -26,6 +27,7 @@ i3.group_names = {
 	glass = S"Any glass",
 	stick = S"Any stick",
 	stone = S"Any stone",
+	fence = S"Any fence",
 	carpet = S"Any carpet",
 	flower = S"Any flower",
 	leaves = S"Any leaves",

src/preprocessor.lua

@@ -3,6 +3,8 @@
 
 local fmt, split = string.format, string.split
 local var = "[%w%.%[%]\"\'_]"
+local modpath = core.get_modpath"i3"
+local _,_, fs_elements = dofile(modpath .. "/src/styles.lua")
 
 local operators = {
 	["([%+%-%*%^/&|])="] = function(a, b, c)
@@ -43,6 +45,16 @@ local function compile(data)
 		return "local " .. a:gsub("\"", "") .. " = i3.get(" .. a .. ")"
 	end)
 
+	data = data:gsub("([%w_]+)%(", function(a)
+		if fs_elements[a] then
+			return fmt("fs('%s',", a)
+		end
+	end)
+
+	data = data:gsub("([%w_]+)-%-\n", function(a)
+		return fmt("%s = %s - 1", a, a)
+	end)
+
 	for op, func in pairs(operators) do
 		data = data:gsub("(" .. var .. "+)%s?" .. op .. "%s?(" .. var .. "*)", func)
 	end

src/progressive.lua

@@ -32,7 +32,9 @@ local function item_in_inv(item, inv_items)
 	local inv_items_size = #inv_items
 
 	if is_group(item) then
-		local groups = extract_groups(item)
+		local groupname = item:sub(7)
+		local group_cache = i3.groups[groupname]
+		local groups = group_cache and group_cache.groups or extract_groups(item)
 
 		for i = 1, inv_items_size do
 			local def = core.registered_items[inv_items[i]]
@@ -89,6 +91,10 @@ local item_lists = {"main", "craft", "craftpreview"}
 
 local function get_inv_items(player)
 	local inv = player:get_inventory()
+	if not inv then
+		return {}
+	end
+
 	local stacks = {}
 
 	for i = 1, #item_lists do

src/styles.lua

@@ -1,3 +1,5 @@
+local fmt = string.format
+
 local PNG = {
 	blank = "i3_blank.png",
 	bg = "i3_bg.png",
@@ -23,7 +25,7 @@ local PNG = {
 	sign = "i3_sign.png",
 	cancel = "i3_cancel.png",
 	export = "i3_export.png",
-	slot = "i3_slot.png",
+	slot = "i3_slot.png^\\[resize:128x128",
 	tab = "i3_tab.png",
 	tab_small = "i3_tab_small.png",
 	tab_top = "i3_tab.png^\\[transformFY",
@@ -42,6 +44,9 @@ local PNG = {
 	home = "i3_home.png",
 	flag = "i3_flag.png",
 	edit = "i3_edit.png",
+	no_result = "i3_no_result.png",
+	find_more = "i3_find_more.png",
+	search_outline = "i3_search_outline.png",
 
 	cancel_hover = "i3_cancel.png^\\[brighten",
 	search_hover = "i3_search.png^\\[brighten",
@@ -72,13 +77,16 @@ local styles = string.format([[
 	style_type[label,field;font_size=16]
 	style_type[button;border=false;content_offset=0]
 	style_type[image_button,item_image_button,checkbox,dropdown;border=false;sound=i3_click]
-	style_type[item_image_button;bgimg_hovered=%s]
+	style_type[item_image_button;bgimg_middle=9;padding=-9]
+	style_type[item_image_button:hovered;bgimg=%s]
 
+	style[;sound=]
 	style[nofav;sound=i3_cannot]
 	style[pagenum,no_item,no_rcp;font=bold;font_size=18]
+	style[search;fgimg=%s;content_offset=0]
+	style[enable_search:hovered;bgimg=%s]
 	style[exit;fgimg=%s;fgimg_hovered=%s;content_offset=0]
 	style[cancel;fgimg=%s;fgimg_hovered=%s;content_offset=0]
-	style[search;fgimg=%s;fgimg_hovered=%s;content_offset=0]
 	style[prev_page,prev_recipe,prev_usage,prev_sort,prev_skin;fgimg=%s;fgimg_hovered=%s]
 	style[next_page,next_recipe,next_usage,next_sort,next_skin;fgimg=%s;fgimg_hovered=%s]
 	style[waypoint_add;fgimg=%s;fgimg_hovered=%s;content_offset=0]
@@ -93,9 +101,10 @@ local styles = string.format([[
 	style[confirm_trash_yes;sound=i3_trash]
 ]],
 PNG.slot,
+PNG.search_hover,
+PNG.search_outline,
 PNG.exit,     PNG.exit_hover,
 PNG.cancel,   PNG.cancel_hover,
-PNG.search,   PNG.search_hover,
 PNG.prev,     PNG.prev_hover,
 PNG.next,     PNG.next_hover,
 PNG.add,      PNG.add_hover,
@@ -108,9 +117,10 @@ local fs_elements = {
 	tooltip = "tooltip[%f,%f;%f,%f;%s]",
 	button = "button[%f,%f;%f,%f;%s;%s]",
 	checkbox = "checkbox[%f,%f;%s;%s;%s]",
+	slot = "image[%f,%f;%f,%f;" .. fmt("%s;9]", PNG.slot),
 	item_image = "item_image[%f,%f;%f,%f;%s]",
 	hypertext = "hypertext[%f,%f;%f,%f;%s;%s]",
-	bg9 = "background9[%f,%f;%f,%f;%s;false;%u]",
+	bg9 = "background9[%f,%f;%f,%f;%s;false;12]",
 	scrollbar = "scrollbar[%f,%f;%f,%f;%s;%s;%u]",
 	model = "model[%f,%f;%f,%f;%s;%s;%s;%s;%s;%s;%s]",
 	image_button = "image_button[%f,%f;%f,%f;%s;%s;%s]",

tests/test_tabs.lua

@@ -16,30 +16,18 @@ i3.new_tab("test2", {
 	end,
 })
 
-i3.new_tab("test3", {
-	description = "Test 3",
+i3.new_tab("test_creative", {
+	description = "Test creative",
 
 	access = function(player, data)
 		local name = player:get_player_name()
-		if name == "singleplayer" then
-			return true
-		end
+		return core.is_creative_enabled(name)
 	end,
 
 	formspec = function(player, data, fs)
-		fs("label[3,1;Test 3]")
+		fs("label[3,1;Creative enabled]")
 	end,
 
-	fields = function(player, data, fields)
-		i3.set_fs(player, "label[3,2;Test extra_fs]")
-	end,
+	fields = i3.set_fs,
 })
 
-i3.override_tab("test2", {
-	description = "Test override",
-	image = "i3_mesepick.png",
-
-	formspec = function(player, data, fs)
-		fs("label[3,1;Override!]")
-	end,
-})

util/luacheck.lua

@@ -1,6 +1,7 @@
 local exec = os.execute
 local fmt, find, sub = string.format, string.find, string.sub
 local var = "[%w%.%[%]\"\'_]"
+local _,_, fs_elements = dofile("../src/styles.lua")
 
 exec "clear"
 
@@ -34,7 +35,7 @@ local files = {
 	"caches",
 	"callbacks",
 	"common",
-	"compress",
+	"compression",
 	"detached_inv",
 	"fields",
 	"groups",
@@ -84,6 +85,16 @@ local function compile(data)
 		return "local " .. a:gsub("\"", "") .. " = i3.get(" .. a .. ")"
 	end)
 
+	data = data:gsub("([%w_]+)%(", function(a)
+		if fs_elements[a] then
+			return fmt("fs('%s',", a)
+		end
+	end)
+
+	data = data:gsub("([%w_]+)-%-\n", function(a)
+		return fmt("%s = %s - 1", a, a)
+	end)
+
 	for op, func in pairs(operators) do
 		data = data:gsub("(" .. var .. "+)%s?" .. op .. "%s?(" .. var .. "*)", func)
 	end
@@ -116,7 +127,7 @@ for _, p in ipairs(files) do
 			end
 		end
 
-		local _file = io.open(path:match("(.*)%.") .. ".l", "w")
+		local _file = io.open(path:match("(.*)%.") .. ".lc", "w")
 		_file:write(data)
 		_file:close()
 	end
@@ -125,6 +136,6 @@ for _, p in ipairs(files) do
 end
 
 exec "luacheck ../init.lua"
-exec "luacheck ../src/operators.lua"
-exec "luacheck ../src/*.l"
-exec "rm ../src/*.l"
+exec "luacheck ../src/preprocessor.lua"
+exec "luacheck ../src/*.lc"
+exec "rm ../src/*.lc"