write something there

mods/unified_inventory/item_names.lua

@@ -0,0 +1,88 @@
+-- Based on 4itemnames mod by 4aiman
+
+local item_names = {} -- [player_name] = { hud, dtime, itemname }
+local dlimit = 3  -- HUD element will be hidden after this many seconds
+local hudbars_mod = minetest.get_modpath("hudbars")
+local only_names = minetest.settings:get_bool("unified_inventory_only_names", true)
+local max_length = tonumber(minetest.settings:get("unified_inventory_max_item_name_length")) or 80
+
+local function set_hud(player)
+	local player_name = player:get_player_name()
+	local off = {x=0, y=-65}
+	if hudbars_mod then
+		-- Assume no alignment (2 per line)
+		off.y = off.y - math.ceil(hb.hudbars_count / 2) * 25
+	else
+		off.y = off.y - 25
+	end
+
+	item_names[player_name] = {
+		hud = player:hud_add({
+			-- TODO: remove compatibility code when 5.8.0 is no longer used
+			[minetest.features.hud_def_type_field and "type" or "hud_elem_type"] = "text",
+			position = {x=0.5, y=1},
+			offset = off,
+			alignment = {x=0, y=-1},
+			number = 0xFFFFFF,
+			text = "",
+		}),
+		dtime = dlimit,
+		index = 1,
+		itemname = ""
+	}
+end
+
+minetest.register_on_joinplayer(function(player)
+	minetest.after(0, set_hud, player)
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	item_names[player:get_player_name()] = nil
+end)
+
+minetest.register_globalstep(function(dtime)
+	for _, player in pairs(minetest.get_connected_players()) do
+		local data = item_names[player:get_player_name()]
+		if not data or not data.hud then
+			data = {} -- Update on next step
+			set_hud(player)
+		end
+
+		local index = player:get_wield_index()
+		local stack = player:get_wielded_item()
+		local itemname = stack:get_name()
+
+		if data.hud and data.dtime < dlimit then
+			data.dtime = data.dtime + dtime
+			if data.dtime > dlimit then
+				player:hud_change(data.hud, 'text', "")
+			end
+		end
+
+		if data.hud and (itemname ~= data.itemname or index ~= data.index) then
+			data.itemname = itemname
+			data.index = index
+			data.dtime = 0
+			local lang_code = minetest.get_player_information(player:get_player_name()).lang_code
+
+			local desc = stack.get_meta
+				and stack:get_meta():get_string("description")
+
+			if not desc or desc == "" then
+				-- Try to use default description when none is set in the meta
+				local def = minetest.registered_items[itemname]
+				desc = def and def.description or ""
+			end
+			if only_names and desc and string.find(desc, "\n") then
+				desc = string.match(desc, "([^\n]*)")
+			end
+			desc = minetest.get_translated_string(lang_code, desc)
+			desc = minetest.strip_colors(desc)
+			if string.len(desc) > max_length and max_length > 0 then
+				desc = string.sub(desc, 1, max_length) .. " [...]"
+			end
+			player:hud_change(data.hud, 'text', desc)
+		end
+	end
+end)
+