Add mod: show_wielded_item

mods/HUD/show_wielded_item/init.lua

@@ -0,0 +1,108 @@
+-- Based on 4itemnames mod by 4aiman
+
+local wield = {}
+local wieldindex = {}
+local huds = {}
+local dtimes = {}
+local dlimit = 3  -- HUD element will be hidden after this many seconds
+
+local hudbars_mod = minetest.get_modpath("hudbars")
+
+local function set_hud(player)
+	if not player:is_player() then return end
+	local player_name = player:get_player_name() 
+	-- Fixed offset in config file
+	local fixed = tonumber(minetest.settings:get("show_wielded_item_y_offset"))
+	local off
+	if fixed and fixed ~= -1 then
+		-- Manual offset
+		off = {x=0, y=-fixed}
+	else
+		-- Default offset
+		off = {x=0, y=-101}
+
+		if hudbars_mod then
+			-- Tweak offset if hudbars mod was found
+
+			local rows = math.floor((#hb.get_hudbar_identifiers()-1) / 2) + 1
+			local vmargin = tonumber(minetest.settings:get("hudbars_vmargin")) or 24
+			off.y = -76 - vmargin*rows
+		end
+
+		-- Dirty trick to avoid collision with Minetest's status text (e.g. “Volume changed to 0%”)
+		if off.y >= -167 and off.y <= -156 then
+			off.y = -181
+		end
+	end
+
+	huds[player_name] = player:hud_add({
+		hud_elem_type = "text",
+		position = {x=0.5, y=1},
+		offset = off,
+		alignment = {x=0, y=0},
+		number = 0xFFFFFF ,
+		text = "",
+	})
+end
+
+minetest.register_on_joinplayer(function(player)
+	set_hud(player)
+
+	local name = player:get_player_name()
+	wield[name] = player:get_wielded_item():get_name()
+	wieldindex[name] = player:get_wield_index()
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	local name = player:get_player_name()
+	wield[name] = nil
+	wieldindex[name] = nil
+end)
+
+minetest.register_globalstep(function(dtime)
+	for _, player in pairs(minetest.get_connected_players()) do
+		local player_name = player:get_player_name()
+		local wstack = player:get_wielded_item()
+		local wname = wstack:get_name()
+		local windex = player:get_wield_index()
+
+		if dtimes[player_name] and dtimes[player_name] < dlimit then
+			dtimes[player_name] = dtimes[player_name] + dtime
+			if dtimes[player_name] > dlimit and huds[player_name] then
+				player:hud_change(huds[player_name], 'text', "")
+			end
+		end
+
+		-- Update HUD when wielded item or wielded index changed
+		if wname ~= wield[player_name] or windex ~= wieldindex[player_name] then
+			wieldindex[player_name] = windex
+			wield[player_name] = wname
+			dtimes[player_name] = 0
+
+			if huds[player_name] then 
+
+				local def = minetest.registered_items[wname]
+				local meta = wstack:get_meta()
+
+				--[[ Get description. Order of preference:
+				* description from metadata
+				* description from item definition
+				* itemstring ]]
+				local desc = meta:get_string("description")
+				if (desc == nil or desc == "") and def then
+					desc = def.description
+				end
+				if desc == nil or desc == "" then
+					desc = wname
+				end
+				-- Cut off item description after first newline
+				local firstnewline = string.find(desc, "\n")
+				if firstnewline then
+					desc = string.sub(desc, 1, firstnewline-1)
+				end
+				player:hud_change(huds[player_name], 'text', desc)
+			end
+		end
+	end
+end)
+