Code cleaning

README.md

@@ -19,4 +19,4 @@ For developers, `craftguide` also has a [modding API](https://github.com/minetes
 Love this mod? Donations are appreciated: https://www.paypal.me/jpg84240
 
 
-![Preview2](https://content.minetest.net/uploads/wAGr5rE3fI.png)
+![Preview2](https://i.imgur.com/mLlVyca.png)

init.lua

@@ -7,7 +7,6 @@ local searches      = {}
 local recipes_cache = {}
 local usages_cache  = {}
 local fuel_cache    = {}
-
 local toolrepair
 
 local progressive_mode = core.settings:get_bool "craftguide_progressive_mode"
@@ -16,6 +15,7 @@ local autocache = core.settings:get_bool "craftguide_autocache"
 
 local http = core.request_http_api()
 local storage = core.get_mod_storage()
+local singleplayer = core.is_singleplayer()
 
 local reg_items = core.registered_items
 local reg_tools = core.registered_tools
@@ -64,9 +64,11 @@ local vec_add, vec_mul = vector.add, vector.multiply
 local FORMSPEC_MINIMAL_VERSION = 3
 
 local ROWS = 9
-local LINES = sfinv_only and 5 or 9
+local LINES = sfinv_only and 5 or 10
 local IPP = ROWS * LINES
-local WH_LIMIT = 8
+local WH_LIMIT = 5
+local MAX_FAVS = 6
+local ITEM_BTN_SIZE = 1.1
 
 local XOFFSET = sfinv_only and 3.83 or 11.2
 local YOFFSET = sfinv_only and 4.9 or 1
@@ -111,6 +113,20 @@ local function get_fs_version(name)
 	return info and info.formspec_version or 1
 end
 
+local function outdated(name)
+	local fs = fmt([[
+		size[6.6,1.3]
+		image[0,0;1,1;%s]
+		label[1,0;%s]
+		button_exit[2.8,0.8;1,1;;OK]
+	]],
+	PNG.book,
+	"Your Minetest client is outdated.\n" ..
+	"Get the latest version on minetest.net to use the Crafting Guide.")
+
+	return show_formspec(name, "craftguide", fs)
+end
+
 local function mul_elem(elem, n)
 	local fstr, elems = "", {}
 
@@ -697,6 +713,10 @@ local function is_fav(data)
 	return fav, i
 end
 
+local function check_newline(def)
+	return def and def.description and find(def.description, "\n")
+end
+
 local function get_desc(name)
 	if sub(name, 1, 1) == "_" then
 		name = sub(name, 2)
@@ -760,26 +780,44 @@ local function get_tooltip(name, info)
 	end
 
 	if info.rarity then
-		local chance = (1 / info.rarity) * 100
+		local chance = (1 / max(1, info.rarity)) * 100
 		tooltip = add(S("@1 of chance to drop", clr("#ff0", chance .. "%")))
 	end
 
+	if info.tools then
+		local several = #info.tools > 1
+		local names = several and "\n" or ""
+
+		if several then
+			for i = 1, #info.tools do
+				names = fmt("%s\t\t- %s\n",
+					names, clr("#ff0", get_desc(info.tools[i])))
+			end
+
+			tooltip = add(S("Only drop if using one of these tools: @1",
+				sub(names, 1, -2)))
+		else
+			tooltip = add(S("Only drop if using this tool: @1",
+				clr("#ff0", get_desc(info.tools[1]))))
+		end
+	end
+
 	return fmt("tooltip[%s;%s]", name, ESC(tooltip))
 end
 
-local function get_output_fs(data, fs, L)
-	local custom_recipe = craft_types[L.recipe.type]
+local function get_output_fs(data, fs, rcp, shapeless, right, btn_size, _btn_size, spacing)
+	local custom_recipe = craft_types[rcp.type]
 
-	if custom_recipe or L.shapeless or L.recipe.type == "cooking" then
+	if custom_recipe or shapeless or rcp.type == "cooking" then
 		local icon = custom_recipe and custom_recipe.icon or
-			     L.shapeless and "shapeless" or "furnace"
+			     shapeless and "shapeless" or "furnace"
 
 		if not custom_recipe then
 			icon = fmt("craftguide_%s.png^[resize:16x16", icon)
 		end
 
-		local pos_x = L.rightest + L.btn_size + 0.1
-		local pos_y = YOFFSET + (sfinv_only and 0.25 or -0.45) + L.spacing
+		local pos_x = right + btn_size + 0.1
+		local pos_y = YOFFSET + (sfinv_only and 1.55 or -0.45) + spacing
 
 		if sub(icon, 1, 18) == "craftguide_furnace" then
 			fs[#fs + 1] = fmt(FMT.animated_image,
@@ -789,36 +827,43 @@ local function get_output_fs(data, fs, L)
 		end
 
 		local tooltip = custom_recipe and custom_recipe.description or
-				L.shapeless and S"Shapeless" or S"Cooking"
+				shapeless and S"Shapeless" or S"Cooking"
 
 		fs[#fs + 1] = fmt(FMT.tooltip, pos_x, pos_y, 0.5, 0.5, ESC(tooltip))
 	end
 
-	local arrow_X = L.rightest + (L._btn_size or 1.1)
+	local arrow_X = right + (_btn_size or ITEM_BTN_SIZE)
 	local output_X = arrow_X + 0.9
-	local Y = YOFFSET + (sfinv_only and 0.7 or 0) + L.spacing
+	local Y = YOFFSET + (sfinv_only and 2 or 0) + spacing
 
 	fs[#fs + 1] = fmt(FMT.image, arrow_X, Y + 0.2, 0.9, 0.7, PNG.arrow)
 
-	if L.recipe.type == "fuel" then
-		fs[#fs + 1] = fmt(FMT.animated_image, output_X, Y, 1.1, 1.1, PNG.fire_anim, 8, 180)
+	if rcp.type == "fuel" then
+		fs[#fs + 1] = fmt(FMT.animated_image, output_X, Y,
+			ITEM_BTN_SIZE, ITEM_BTN_SIZE, PNG.fire_anim, 8, 180)
 	else
-		local item = L.recipe.output
+		local item = rcp.output
 		item = clean_name(item)
 		local name = match(item, "%S*")
 
-		fs[#fs + 1] = fmt(FMT.image, output_X, Y, 1.1, 1.1, PNG.selected)
+		fs[#fs + 1] = fmt(FMT.image, output_X, Y,
+			ITEM_BTN_SIZE, ITEM_BTN_SIZE, PNG.selected)
 
 		local _name = sfinv_only and name or fmt("_%s", name)
 
 		fs[#fs + 1] = fmt("item_image_button[%f,%f;%f,%f;%s;%s;%s]",
-			output_X, Y, 1.1, 1.1, item, _name, "")
+			output_X, Y, ITEM_BTN_SIZE, ITEM_BTN_SIZE, item, _name, "")
+
+
+		local def = reg_items[name]
 
 		local infos = {
-			unknown  = not reg_items[name] or nil,
+			unknown  = not def or nil,
 			burntime = fuel_cache[name],
 			repair   = repairable(name),
-			rarity   = L.rarity,
+			rarity   = rcp.rarity,
+			tools    = rcp.tools,
+			newline  = check_newline(def),
 		}
 
 		if next(infos) then
@@ -827,11 +872,11 @@ local function get_output_fs(data, fs, L)
 
 		if infos.burntime then
 			fs[#fs + 1] = fmt(FMT.image,
-				output_X + 1, YOFFSET + (sfinv_only and 0.7 or 0.1) + L.spacing,
+				output_X + 1, YOFFSET + (sfinv_only and 2 or 0.1) + spacing,
 				0.6, 0.4, PNG.arrow)
 
 			fs[#fs + 1] = fmt(FMT.animated_image,
-				output_X + 1.6, YOFFSET + (sfinv_only and 0.55 or 0) + L.spacing,
+				output_X + 1.6, YOFFSET + (sfinv_only and 1.85 or 0) + spacing,
 				0.6, 0.6, PNG.fire_anim, 8, 180)
 		end
 	end
@@ -839,9 +884,7 @@ end
 
 local function get_grid_fs(data, fs, rcp, spacing)
 	local width = rcp.width or 1
-	local replacements = rcp.replacements
-	local rarity = rcp.rarity
-	local rightest, btn_size, _btn_size = 0, 1.1
+	local right, btn_size, _btn_size = 0, ITEM_BTN_SIZE
 	local cooktime, shapeless
 
 	if rcp.type == "cooking" then
@@ -878,22 +921,15 @@ local function get_grid_fs(data, fs, rcp, spacing)
 		local Y = ceil(i / width) + YOFFSET - min(2, rows) + spacing
 
 		if large_recipe then
-			local xof = 1 - 4 / width
-			local yof = 1 - 4 / rows
-			local x_y = width > rows and xof or yof
-
-			btn_size = width > rows and
-				(3.5 + (xof * 2)) / width or (3.5 + (yof * 2)) / rows
+			btn_size = width > 3 and 3 / width or 3 / rows
 			_btn_size = btn_size
 
-			X = (btn_size * ((i - 1) % width) + XOFFSET -
-				(sfinv_only and 2.83 or 0.5)) * (0.83 - (x_y / 5))
-			Y = (btn_size * floor((i - 1) / width) +
-				(sfinv_only and 5.81 or 5.5) + x_y) * (0.86 - (x_y / 5))
+			X = btn_size * ((i - 1) % width) + XOFFSET - 2.65
+			Y = btn_size * floor((i - 1) / width) + spacing + (sfinv and 4 or 0)
 		end
 
-		if X > rightest then
-			rightest = X
+		if X > right then
+			right = X
 		end
 
 		local groups
@@ -906,9 +942,9 @@ local function get_grid_fs(data, fs, rcp, spacing)
 		local label = groups and "\nG" or ""
 		local replace
 
-		if replacements then
-			for j = 1, #replacements do
-				local replacement = replacements[j]
+		if rcp.replacements then
+			for j = 1, #rcp.replacements do
+				local replacement = rcp.replacements[j]
 				if replacement[1] == name then
 					label = (label ~= "" and "\n" or "") .. label .. "\nR"
 					replace = replacement[2]
@@ -916,7 +952,7 @@ local function get_grid_fs(data, fs, rcp, spacing)
 			end
 		end
 
-		Y = Y + (sfinv_only and 0.7 or 0)
+		Y = Y + (sfinv_only and 2 or 0)
 
 		if not large_recipe then
 			fs[#fs + 1] = fmt(FMT.image, X, Y, btn_size, btn_size, PNG.selected)
@@ -925,12 +961,15 @@ local function get_grid_fs(data, fs, rcp, spacing)
 		fs[#fs + 1] = fmt(FMT.item_image_button,
 			X, Y, btn_size, btn_size, item, item, label)
 
+		local def = reg_items[name]
+
 		local infos = {
-			unknown  = not reg_items[name] or nil,
+			unknown  = not def or nil,
 			groups   = groups,
 			burntime = fuel_cache[name],
 			cooktime = cooktime,
 			replace  = replace,
+			newline  = check_newline(def),
 		}
 
 		if next(infos) then
@@ -942,79 +981,13 @@ local function get_grid_fs(data, fs, rcp, spacing)
 		fs[#fs + 1] = "style_type[item_image_button;border=false]"
 	end
 
-	get_output_fs(data, fs, {
-		recipe    = rcp,
-		shapeless = shapeless,
-		rightest  = rightest,
-		btn_size  = btn_size,
-		_btn_size = _btn_size,
-		spacing   = spacing,
-		rarity    = rarity,
-	})
+	get_output_fs(data, fs, rcp, shapeless, right, btn_size, _btn_size, spacing)
 end
 
-local function get_panels(data, fs)
-	local start_y = sfinv_only and 0.33 or 0
+local function get_rcp_lbl(data, fs, panel, spacing, rn, is_recipe)
+	local lbl
 
-	local panels = {
-		{dat = data.usages or {}, height = 3.5},
-		{dat = data.recipes or {}, height = 3.5},
-	}
-
-	if not sfinv_only then
-		panels.favs = {height = 2.19}
-	else
-		panels = data.show_usages and {{dat = data.usages}} or {{dat = data.recipes}}
-	end
-
-	for k, v in pairs(panels) do
-		start_y = start_y + 1
-		local spacing = (start_y - 1) * 3.6
-
-		if not sfinv_only then
-			fs[#fs + 1] = fmt("background9[8.1,%f;6.6,%f;%s;false;%d]",
-				-0.2 + spacing, v.height, PNG.bg_full, 10)
-
-			if k == 2 then
-				local fav = is_fav(data)
-				local nfavs = #data.favs
-
-				fs[#fs + 1] = fmt(
-					"style[fav;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]",
-					fmt("craftguide_fav%s.png", fav and "" or "_off"),
-					fmt("craftguide_fav%s.png", fav and "_off" or ""),
-					fmt("craftguide_fav%s.png", fav and "_off" or ""))
-
-				if nfavs < 6 or (nfavs >= 6 and fav) then
-					fs[#fs + 1] = fmt(FMT.image_button,
-						14, spacing, 0.5, 0.45, "", "fav", "")
-				end
-
-				fs[#fs + 1] = fmt("tooltip[fav;%s]",
-					fav and ES"Unmark this item" or ES"Mark this item")
-			end
-		end
-
-		local rn = v.dat and #v.dat or -1
-		local _rn = tostring(rn)
-		local xu = tostring(data.unum) .. _rn
-		local xr = tostring(data.rnum) .. _rn
-		xu = max(-0.3, -((#xu - 3) * 0.05))
-		xr = max(-0.3, -((#xr - 3) * 0.05))
-
-		local is_recipe = sfinv_only and not data.show_usages or k == 2
-		local lbl = ""
-
-		if not sfinv_only and rn == 0 then
-			local X = XOFFSET - 0.7
-			local Y = YOFFSET - 0.4 + spacing
-
-			fs[#fs + 1] = fmt(FMT.image, X, Y, 2, 2, PNG.nothing)
-
-			fs[#fs + 1] = fmt(FMT.tooltip,
-				X, Y, 2, 2, is_recipe and ES"No recipes" or ES"No usages")
-
-		elseif (not sfinv_only and is_recipe) or
+	if (not sfinv_only and is_recipe) or
 			(sfinv_only and not data.show_usages) then
 		lbl = ES("Recipe @1 of @2", data.rnum, rn)
 
@@ -1027,6 +1000,12 @@ local function get_panels(data, fs)
 			ES("Recipe @1 of @2", data.rnum, rn)
 	end
 
+	local _rn = tostring(rn)
+	local xu = tostring(data.unum) .. _rn
+	local xr = tostring(data.rnum) .. _rn
+	xu = max(-0.3, -((#xu - 3) * 0.05))
+	xr = max(-0.3, -((#xr - 3) * 0.05))
+
 	fs[#fs + 1] = fmt(FMT.label,
 		XOFFSET + (sfinv_only and 2.3 or 1.6) + (is_recipe and xr or xu),
 		YOFFSET + (sfinv_only and 3.4 or 1.5 + spacing), lbl)
@@ -1038,31 +1017,122 @@ local function get_panels(data, fs)
 		local x_arrow = XOFFSET + (sfinv_only and 1.7 or 1)
 		local y_arrow = YOFFSET + (sfinv_only and 3.3 or 1.4 + spacing)
 
+		fs[#fs + 1] = fmt([[
+			style[%s;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]
+			style[%s;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]
+		]],
+		prev_name, PNG.prev, PNG.prev_hover, PNG.prev_hover,
+		next_name, PNG.next, PNG.next_hover, PNG.next_hover)
+
 		fs[#fs + 1] = fmt(mul_elem(FMT.arrow, 2),
 			x_arrow + (is_recipe and xr or xu), y_arrow,
 				PNG.prev, prev_name, "",
 			x_arrow + 1.8, y_arrow, PNG.next, next_name, "")
 	end
 
-		local rcp = v.dat and (is_recipe and v.dat[data.rnum] or v.dat[data.unum])
-		if rcp then
+	local rcp = is_recipe and panel.rcp[data.rnum] or panel.rcp[data.unum]
 	get_grid_fs(data, fs, rcp, spacing)
 end
 
-		if k == "favs" and not sfinv_only then
-			fs[#fs + 1] = fmt(FMT.label, 8.3, spacing - 0.1, ES"Bookmarks")
+local function get_title_fs(data, fs, spacing)
+	local desc = ESC(get_desc(data.query_item))
+	desc = #desc > 33 and fmt("%s...", sub(desc, 1, 30)) or desc
+	local t_desc = data.query_item
+	t_desc = #t_desc > 40 and fmt("%s...", sub(t_desc, 1, 37)) or t_desc
+
+	fs[#fs + 1] = fmt("hypertext[9.05,%f;5.85,1.2;item_title;%s]",
+		spacing - 0.1,
+		fmt("<item name=%s float=right width=64 height=64 rotate=yes>" ..
+		    "<big><b>%s</b></big>\n<style color=#7bf font=mono>%s</style>",
+			data.query_item, desc, t_desc))
+
+	local fav = is_fav(data)
+	local nfavs = #data.favs
+
+	if nfavs < MAX_FAVS or (nfavs == MAX_FAVS and fav) then
+		local fav_marked = fmt("craftguide_fav%s.png", fav and "_off" or "")
+
+		fs[#fs + 1] = fmt(
+			"style[fav;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]",
+			fmt("craftguide_fav%s.png", fav and "" or "_off"), fav_marked, fav_marked)
+
+		fs[#fs + 1] = fmt(FMT.image_button, 8.25, spacing + 0.15, 0.5, 0.45, "", "fav", "")
+
+		fs[#fs + 1] = fmt("tooltip[fav;%s]",
+			fav and ES"Unmark this item" or ES"Mark this item")
+	else
+		fs[#fs + 1] = fmt(
+			"style[fav_no;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]",
+			"craftguide_fav_off.png", PNG.nothing, PNG.nothing)
+
+		fs[#fs + 1] = fmt(FMT.image_button,
+			8.25, spacing + 0.15, 0.5, 0.45, "", "fav_no", "")
+
+		fs[#fs + 1] = fmt("tooltip[fav_no;%s]",
+			ES"Cannot mark this item. Limit of bookmarks reached.")
+	end
+end
+
+local function get_panels(data, fs)
+	local title   = {name = "title", height = 1.2}
+	local favs    = {name = "favs",  height = 1.91}
+	local recipes = {name = "recipes", rcp = data.recipes, height = 3.5}
+	local usages  = {name = "usages",  rcp = data.usages,  height = 3.5}
+	local panels  = {title, recipes, usages, favs}
+
+	if sfinv_only then
+		panels = {data.show_usages and usages or recipes}
+	end
+
+	for idx = 1, #panels do
+		local panel, spacing = panels[idx], 0
+
+		if idx > 1 then
+			for _idx = idx - 1, 1, -1 do
+				spacing = spacing + panels[_idx].height + 0.1
+			end
+		end
+
+		local rn = panel.rcp and #panel.rcp
+		local is_recipe = sfinv_only and not data.show_usages or panel.name == "recipes"
+		local recipe_or_usage = panel.name == "recipes" or panel.name == "usages"
+
+		if rn then
+			get_rcp_lbl(data, fs, panel, spacing, rn, is_recipe)
+		end
+
+		if sfinv_only then return end
+
+		fs[#fs + 1] = fmt("background9[8.1,%f;6.6,%f;%s;false;%d]",
+			-0.2 + spacing, panel.height, PNG.bg_full, 10)
+
+		if recipe_or_usage and not rn then
+			local X = XOFFSET - 0.7
+			local Y = YOFFSET - 0.4 + spacing
+
+			fs[#fs + 1] = fmt(FMT.image, X, Y, 2, 2, PNG.nothing)
+
+			fs[#fs + 1] = fmt(FMT.tooltip,
+				X, Y, 2, 2, is_recipe and ES"No recipes" or ES"No usages")
+
+		elseif panel.name == "title" then
+			get_title_fs(data, fs, spacing)
+
+		elseif panel.name == "favs" then
+			fs[#fs + 1] = fmt(FMT.label, 8.3, spacing - 0.15, ES"Bookmarks")
 
 			for i = 1, #data.favs do
 				local item = data.favs[i]
 				local X = 7.85 + (i - 0.5)
-				local Y = spacing + 0.45
+				local Y = spacing + 0.4
 
 				if data.query_item == item then
-					fs[#fs + 1] = fmt(FMT.image, X, Y, 1.1, 1.1, PNG.selected)
+					fs[#fs + 1] = fmt(FMT.image, X, Y,
+						ITEM_BTN_SIZE, ITEM_BTN_SIZE, PNG.selected)
 				end
 
 				fs[#fs + 1] = fmt(FMT.item_image_button,
-					X, Y, 1.1, 1.1, item, item, "")
+					X, Y, ITEM_BTN_SIZE, ITEM_BTN_SIZE, item, item, "")
 			end
 		end
 	end
@@ -1085,9 +1155,9 @@ local function make_fs(data)
 
 	fs[#fs + 1] = fmt([[
 		style[filter;border=false]
-		field[0.4,0.2;2.5,1;filter;;%s]
+		field[0.4,0.2;2.6,1;filter;;%s]
 		field_close_on_enter[filter;false]
-		box[0,0;2.4,0.6;#bababa25]
+		box[0,0;2.5,0.6;#bababa25]
 	]],
 	ESC(data.filter))
 
@@ -1098,6 +1168,7 @@ local function make_fs(data)
 		style[clear;fgimg=%s;fgimg_hovered=%s]
 		style[prev_page;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]
 		style[next_page;fgimg=%s;fgimg_hovered=%s;fgimg_pressed=%s]
+		style[pagenum;border=false]
 	]],
 	PNG.selected, PNG.selected,
 	PNG.search, PNG.search_hover,
@@ -1105,17 +1176,27 @@ local function make_fs(data)
 	PNG.prev, PNG.prev_hover, PNG.prev_hover,
 	PNG.next, PNG.next_hover, PNG.next_hover)
 
-	fs[#fs + 1] = fmt(mul_elem(FMT.image_button, 4),
-		sfinv_only and 2.6 or 2.54, -0.06, 0.85, 0.85, "", "search", "",
-		sfinv_only and 3.3 or 3.25, -0.06, 0.85, 0.85, "", "clear", "",
-		sfinv_only and 5.45 or (9 * 6.83) / 11, -0.06, 0.85, 0.85, "", "prev_page", "",
-		sfinv_only and 7.2  or (9 * 8.75) / 11, -0.06, 0.85, 0.85, "", "next_page", "")
+	fs[#fs + 1] = fmt(mul_elem(FMT.image_button, 2),
+		2.6, -0.06, 0.85, 0.85, "", "search", "",
+		3.3, -0.06, 0.85, 0.85, "", "clear", "")
+
+	if sfinv_only then
+		fs[#fs + 1] = "container[0.2,0]"
+	end
+
+	fs[#fs + 1] = fmt(mul_elem(FMT.image_button, 2),
+		5.35, -0.06, 0.85, 0.85, "", "prev_page", "",
+		7.1, -0.06, 0.85, 0.85, "", "next_page", "")
 
 	data.pagemax = max(1, ceil(#data.items / IPP))
 
-	fs[#fs + 1] = fmt("label[%f,%f;%s / %u]",
-		sfinv_only and 6.35 or (9 * 7.85) / 11,
-			0.06, clr("#ff0", data.pagenum), data.pagemax)
+	fs[#fs + 1] = fmt(FMT.button,
+		5.97, -0.06, 1.36, 0.85, "pagenum",
+		fmt("%s / %u", clr("#ff0", data.pagenum), data.pagemax))
+
+	if sfinv_only then
+		fs[#fs + 1] = "container_end[]"
+	end
 
 	if #data.items == 0 then
 		local no_item = ES"No item to show"
@@ -1166,12 +1247,12 @@ end
 
 craftguide.register_craft_type("digging", {
 	description = ES"Digging",
-	icon = "default_tool_steelpick.png",
+	icon = "craftguide_steelpick.png",
 })
 
 craftguide.register_craft_type("digging_chance", {
-	description = ES"Digging Chance",
-	icon = "default_tool_mesepick.png",
+	description = ES"Digging (by chance)",
+	icon = "craftguide_mesepick.png",
 })
 
 local function search(data)
@@ -1357,12 +1438,16 @@ local function handle_drops_table(name, drop)
 			if not dstack:is_empty() and dname ~= name then
 				local dcount = dstack:get_count()
 
-				if #di.items == 1 and di.rarity == 1 and max_start then
+				if #di.items == 1 and max_start and
+						(not di.rarity or di.rarity <= 1) then
 					if not drop_sure[dname] then
-						drop_sure[dname] = 0
+						drop_sure[dname] = {}
 					end
 
-					drop_sure[dname] = drop_sure[dname] + dcount
+					drop_sure[dname] = {
+						output = (drop_sure[dname].output or 0) + dcount,
+						tools  = di.tools,
+					}
 
 					if max_items_left then
 						max_items_left = max_items_left - 1
@@ -1377,24 +1462,22 @@ local function handle_drops_table(name, drop)
 						drop_maybe[dname] = {}
 					end
 
-					if not drop_maybe[dname].output then
-						drop_maybe[dname].output = 0
-					end
-
 					drop_maybe[dname] = {
-						output = drop_maybe[dname].output + dcount,
+						output = (drop_maybe[dname].output or 0) + dcount,
 						rarity = di.rarity,
+						tools  = di.tools,
 					}
 				end
 			end
 		end
 	end
 
-	for item, count in pairs(drop_sure) do
+	for item, data in pairs(drop_sure) do
 		craftguide.register_craft{
 			type   = "digging",
 			items  = {name},
-			output = fmt("%s %u", item, count),
+			output = fmt("%s %u", item, data.output),
+			tools  = data.tools,
 		}
 	end
 
@@ -1404,19 +1487,21 @@ local function handle_drops_table(name, drop)
 			items  = {name},
 			output = fmt("%s %u", item, data.output),
 			rarity = data.rarity,
+			tools  = data.tools,
 		}
 	end
 end
 
 local function register_drops(name, drop)
+	if true_str(drop) then
 		local dstack = ItemStack(drop)
-
 		if not dstack:is_empty() and dstack:get_name() ~= name then
 			craftguide.register_craft{
 				type = "digging",
 				items = {name},
 				output = drop,
 			}
+		end
 	elseif is_table(drop) then
 		handle_drops_table(name, drop)
 	end
@@ -1476,10 +1561,12 @@ local function get_init_items()
 		recipes_cache = dslz(storage:get "recipes_cache")
 	else
 		print "[craftguide] Caching data (this may take a while)"
-		local hash = {}
+		local _select, _preselect = {}, {}
 
 		for name, def in pairs(reg_items) do
-			if show_item(def) then
+			if name ~= "" and show_item(def) then
+				register_drops(name, def.drop)
+
 				if not fuel_cache[name] then
 					cache_fuel(name)
 				end
@@ -1489,16 +1576,19 @@ local function get_init_items()
 				end
 
 				cache_usages(name)
-				register_drops(name, def.drop)
 
-				if name ~= "" and recipes_cache[name] or usages_cache[name] then
+				_preselect[name] = true
+			end
+		end
+
+		for name in pairs(_preselect) do
+			if recipes_cache[name] or usages_cache[name] then
 				init_items[#init_items + 1] = name
-					hash[name] = true
-				end
+				_select[name] = true
 			end
 		end
 
-		handle_aliases(hash)
+		handle_aliases(_select)
 		sort(init_items)
 
 		storage:set_string("init_items", slz(init_items))
@@ -1549,6 +1639,10 @@ on_mods_loaded(get_init_items)
 on_joinplayer(function(player)
 	local name = player:get_player_name()
 	init_data(name)
+
+	if pdata[name].fs_version < FORMSPEC_MINIMAL_VERSION then
+		outdated(name)
+	end
 end)
 
 local function fields(player, _f)
@@ -1579,7 +1673,7 @@ local function fields(player, _f)
 		data.pagenum = 1
 		search(data)
 
-	elseif _f.prev_page or _f.next_page then
+	elseif _f.prev_page or _f.next_page or _f.pagenum then
 		if data.pagemax == 1 then return end
 		data.pagenum = data.pagenum - (_f.prev_page and 1 or -1)
 
@@ -1593,7 +1687,7 @@ local function fields(player, _f)
 		local fav, i = is_fav(data)
 		local total = #data.favs
 
-		if total < 6 and not fav then
+		if total < MAX_FAVS and not fav then
 			data.favs[total + 1] = data.query_item
 		elseif fav then
 			remove(data.favs, i)
@@ -1653,9 +1747,8 @@ if sfinv_only then
 		get = function(self, player, context)
 			local name = player:get_player_name()
 			local data = pdata[name]
-			local formspec = make_fs(data)
 
-			return sfinv.make_formspec(player, context, formspec)
+			return sfinv.make_formspec(player, context, make_fs(data))
 		end,
 
 		on_enter = function(self, player, context)
@@ -1684,17 +1777,7 @@ else
 		local data = pdata[name]
 
 		if data.fs_version < FORMSPEC_MINIMAL_VERSION then
-			local fs = fmt([[
-				size[6.6,1.3]
-				image[0,0;1,1;%s]
-				label[1,0;%s]
-				button_exit[2.8,0.8;1,1;;OK]
-			]],
-			PNG.nothing,
-			"Your Minetest client is outdated.\n" ..
-			"Get the latest version on minetest.net to use the Crafting Guide.")
-
-			return show_formspec(name, "craftguide", fs)
+			return outdated(name)
 		end
 
 		if next(recipe_filters) then
@@ -1725,7 +1808,12 @@ else
 		paramtype = "light",
 		paramtype2 = "wallmounted",
 		sunlight_propagates = true,
-		groups = {choppy = 1, attached_node = 1, oddly_breakable_by_hand = 1, flammable = 3},
+		groups = {
+			choppy = 1,
+			attached_node = 1,
+			oddly_breakable_by_hand = 1,
+			flammable = 3,
+		},
 		node_box = {
 			type = "wallmounted",
 			wall_top    = {-0.5, 0.4375, -0.5, 0.5, 0.5, 0.5},
@@ -1770,7 +1858,7 @@ else
 	if rawget(_G, "sfinv_buttons") then
 		sfinv_buttons.register_button("craftguide", {
 			title = S"Crafting Guide",
-			tooltip = S"Shows a list of available crafting recipes, cooking recipes and fuels",
+			tooltip = S"Shows a list of available crafting recipes",
 			image = PNG.book,
 			action = function(player)
 				on_use(player)
@@ -1780,7 +1868,6 @@ else
 end
 
 if progressive_mode then
-	local PLAYERS = {}
 	local POLL_FREQ = 0.25
 	local HUD_TIMER_MAX = 1.5
 
@@ -1867,6 +1954,34 @@ if progressive_mode then
 		return inv_items
 	end
 
+	local function init_hud(player, data)
+		data.hud = {
+			bg = player:hud_add{
+				hud_elem_type = "image",
+				position      = {x = 0.78, y = 1},
+				alignment     = {x = 1,    y = 1},
+				scale         = {x = 370,  y = 112},
+				text          = PNG.bg,
+			},
+
+			book = player:hud_add{
+				hud_elem_type = "image",
+				position      = {x = 0.79, y = 1.02},
+				alignment     = {x = 1,    y = 1},
+				scale         = {x = 4,    y = 4},
+				text          = PNG.book,
+			},
+
+			text = player:hud_add{
+				hud_elem_type = "text",
+				position      = {x = 0.84, y = 1.04},
+				alignment     = {x = 1,    y = 1},
+				number        = 0xffffff,
+				text          = "",
+			},
+		}
+	end
+
 	local function show_hud_success(player, data)
 		-- It'd better to have an engine function `hud_move` to only need
 		-- 2 calls for the notification's back and forth.
@@ -1914,8 +2029,9 @@ if progressive_mode then
 	-- Workaround. Need an engine call to detect when the contents of
 	-- the player inventory changed, instead.
 	local function poll_new_items()
-		for i = 1, #PLAYERS do
-			local player = PLAYERS[i]
+		local players = get_players()
+		for i = 1, #players do
+			local player = players[i]
 			local name   = player:get_player_name()
 			local data   = pdata[name]
 
@@ -1948,12 +2064,13 @@ if progressive_mode then
 	poll_new_items()
 
 	globalstep(function()
-		for i = 1, #PLAYERS do
-			local player = PLAYERS[i]
+		local players = get_players()
+		for i = 1, #players do
+			local player = players[i]
 			local name   = player:get_player_name()
 			local data   = pdata[name]
 
-			if data.show_hud ~= nil then
+			if data.show_hud ~= nil and singleplayer then
 				show_hud_success(player, data)
 			end
 		end
@@ -1962,8 +2079,6 @@ if progressive_mode then
 	craftguide.add_recipe_filter("Default progressive filter", progressive_filter)
 
 	on_joinplayer(function(player)
-		PLAYERS = get_players()
-
 		local name = player:get_player_name()
 		local data = pdata[name]
 
@@ -1971,31 +2086,9 @@ if progressive_mode then
 		data.inv_items = dslz(meta:get_string "inv_items") or {}
 		data.known_recipes = dslz(meta:get_string "known_recipes") or 0
 
-		data.hud = {
-			bg = player:hud_add{
-				hud_elem_type = "image",
-				position      = {x = 0.78, y = 1},
-				alignment     = {x = 1,    y = 1},
-				scale         = {x = 370,  y = 112},
-				text          = PNG.bg,
-			},
-
-			book = player:hud_add{
-				hud_elem_type = "image",
-				position      = {x = 0.79, y = 1.02},
-				alignment     = {x = 1,    y = 1},
-				scale         = {x = 4,    y = 4},
-				text          = PNG.book,
-			},
-
-			text = player:hud_add{
-				hud_elem_type = "text",
-				position      = {x = 0.84, y = 1.04},
-				alignment     = {x = 1,    y = 1},
-				number        = 0xffffff,
-				text          = "",
-			},
-		}
+		if singleplayer then
+			init_hud(player, data)
+		end
 	end)
 
 	local to_save = {"inv_items", "known_recipes"}
@@ -2011,14 +2104,12 @@ if progressive_mode then
 		end
 	end
 
-	on_leaveplayer(function(player)
-		PLAYERS = get_players()
-		save_meta(player)
-	end)
+	on_leaveplayer(save_meta)
 
 	on_shutdown(function()
-		for i = 1, #PLAYERS do
-			local player = PLAYERS[i]
+		local players = get_players()
+		for i = 1, #players do
+			local player = players[i]
 			save_meta(player)
 		end
 	end)
@@ -2046,13 +2137,11 @@ function craftguide.show(name, item, show_usages)
 	if not recipes and not usages then
 		if not recipes_cache[item] and not usages_cache[item] then
 			return false, msg(name, fmt("%s: %s",
-				S"No recipe or usage for this item",
-				get_desc(item)))
+				S"No recipe or usage for this item", get_desc(item)))
 		end
 
 		return false, msg(name, fmt("%s: %s",
-			S"You don't know a recipe or usage for this item",
-			get_desc(item)))
+			S"You don't know a recipe or usage for this item", get_desc(item)))
 	end
 
 	data.query_item = item

locale/craftguide.fr.tr

@@ -56,5 +56,10 @@ No node pointed=Aucun bloc visé
 You don't know a recipe or usage for this item=Tu ne connais aucune recette pour ce bloc
 No recipe or usage for this item=Aucune recette pour ce bloc
 Digging=Destruction
-Digging Chance=Destruction chanceuse
+Digging (by chance)=Destruction chanceuse
 @1 of chance to drop=@1 de chance de tomber
+Mark this item=Mettre en favori.
+Unmark this item=Enlever des favoris.
+Cannot mark this item. Limit of bookmarks reached.=Impossible de mettre cet item en favori. Limite des favoris atteinte.
+Only drop if using one of these tools: @1=Tombe seulement si détruit avec un de ces outils: @1
+Only drop if using this tool: @1=Tombe seulement si détruit avec cet outil: @1

locale/template

@@ -56,5 +56,10 @@ No node pointed=
 You don't know a recipe or usage for this item=
 No recipe or usage for this item=
 Digging=
-Digging Chance=
+Digging (by chance)=
 @1 of chance to drop=
+Mark this item=
+Unmark this item=
+Cannot mark this item. Limit of bookmarks reached.=
+Only drop if using one of these tools: @1=
+Only drop if using this tool: @1=