mods/HUD/show_wielded_item/init.lua

   1 -- Based on 4itemnames mod by 4aiman
   2
   3 local wield = {}
   4 local wieldindex = {}
   5 local huds = {}
   6 local dtimes = {}
   7 local dlimit = 3  -- HUD element will be hidden after this many seconds
   8
   9 local hudbars_mod = minetest.get_modpath("hudbars")
  10
  11 local function set_hud(player)
  12         if not player:is_player() then return end
  13         local player_name = player:get_player_name()
  14         -- Fixed offset in config file
  15         local fixed = tonumber(minetest.settings:get("show_wielded_item_y_offset"))
  16         local off
  17         if fixed and fixed ~= -1 then
  18                 -- Manual offset
  19                 off = {x=0, y=-fixed}
  20         else
  21                 -- Default offset
  22                 off = {x=0, y=-101}
  23
  24                 if hudbars_mod then
  25                         -- Tweak offset if hudbars mod was found
  26
  27                         local rows = math.floor((#hb.get_hudbar_identifiers()-1) / 2) + 1
  28                         local vmargin = tonumber(minetest.settings:get("hudbars_vmargin")) or 28
  29                         off.y = -76 - vmargin*rows
  30                 end
  31
  32                 -- Dirty trick to avoid collision with Minetest's status text (e.g. “Volume changed to 0%”)
  33                 if off.y >= -167 and off.y <= -156 then
  34                         off.y = -181
  35                 end
  36         end
  37
  38         huds[player_name] = player:hud_add({
  39                 hud_elem_type = "text",
  40                 position = {x=0.5, y=1},
  41                 offset = off,
  42                 alignment = {x=0, y=0},
  43                 number = 0xFFFFFF ,
  44                 text = "",
  45         })
  46 end
  47
  48 minetest.register_on_joinplayer(function(player)
  49         set_hud(player)
  50
  51         local name = player:get_player_name()
  52         wield[name] = player:get_wielded_item():get_name()
  53         wieldindex[name] = player:get_wield_index()
  54 end)
  55
  56 minetest.register_on_leaveplayer(function(player)
  57         local name = player:get_player_name()
  58         wield[name] = nil
  59         wieldindex[name] = nil
  60 end)
  61
  62 minetest.register_globalstep(function(dtime)
  63         for _, player in pairs(minetest.get_connected_players()) do
  64                 local player_name = player:get_player_name()
  65                 local wstack = player:get_wielded_item()
  66                 local wname = wstack:get_name()
  67                 local windex = player:get_wield_index()
  68
  69                 if dtimes[player_name] and dtimes[player_name] < dlimit then
  70                         dtimes[player_name] = dtimes[player_name] + dtime
  71                         if dtimes[player_name] > dlimit and huds[player_name] then
  72                                 player:hud_change(huds[player_name], 'text', "")
  73                         end
  74                 end
  75
  76                 -- Update HUD when wielded item or wielded index changed
  77                 if wname ~= wield[player_name] or windex ~= wieldindex[player_name] then
  78                         wieldindex[player_name] = windex
  79                         wield[player_name] = wname
  80                         dtimes[player_name] = 0
  81
  82                         if huds[player_name] then
  83
  84                                 local def = minetest.registered_items[wname]
  85                                 local meta = wstack:get_meta()
  86
  87                                 --[[ Get description. Order of preference:
  88                                 * description from metadata
  89                                 * description from item definition
  90                                 * itemstring ]]
  91                                 local desc = meta:get_string("description")
  92                                 if (desc == nil or desc == "") and def then
  93                                         desc = def.description
  94                                 end
  95                                 if desc == nil or desc == "" then
  96                                         desc = wname
  97                                 end
  98                                 -- Cut off item description after first newline
  99                                 local firstnewline = string.find(desc, "\n")
 100                                 if firstnewline then
 101                                         desc = string.sub(desc, 1, firstnewline-1)
 102                                 end
 103                                 player:hud_change(huds[player_name], 'text', desc)
 104                         end
 105                 end
 106         end
 107 end)
 108