waila.lua

   1 local minetest,vector = minetest,vector
   2 local hud_item_name = ""
   3 local all_nodes
   4 local hud_bg = minetest.localplayer:hud_add({
   5                                 hud_elem_type = "image", -- see HUD element types, default "text"
   6                                 position = {x=0.5, y=0},
   7                                 name = "",    -- default ""
   8                                 scale = {x=2.25, y=2.25}, -- default {x=0,y=0}
   9                                 text = "waila.png",    -- default ""
  10                                 offset = { x = 0, y = 29.25},
  11                                 z_index = 0,
  12                         })
  13
  14 local hud_name = minetest.localplayer:hud_add({
  15                 name = "hud_name",
  16                 position = {x=0.5,y=0},
  17                 hud_elem_type = "text",
  18                 number = 0xFFFFFF,
  19                 alignment = 0,
  20                 offset = { x = 0, y = 17},
  21                 text = "",
  22                 z_index = 1,
  23         })
  24 local hud_node = minetest.localplayer:hud_add({
  25                 name = "hud_node",
  26                 position = {x=0.5,y=0},
  27                 hud_elem_type = "text",
  28                 number = 0xFFFFFF,
  29                 alignment = 0,
  30                 offset = { x = 0, y = 36},
  31                 text = "",
  32                 z_index = 1,
  33         })
  34
  35
  36 local waih_name = minetest.localplayer:hud_add({
  37         name = "hud_name",
  38         position = {x=0.5,y=1},
  39         hud_elem_type = "text",
  40         number = 0xFFFFFF,
  41         alignment = 0,
  42         offset = { x = 0, y = -150},
  43         text = "",
  44         z_index = 1,
  45 })
  46
  47
  48 local pos_min = 10
  49 local pos_max = -150
  50 local waih_timer = 0
  51 local old_item = ""
  52
  53 local function update()
  54
  55         if all_nodes then
  56                 --waila
  57                 if minetest.camera then
  58                         local pos = minetest.camera:get_pos()
  59                         local pos2 = vector.add(pos,vector.multiply(minetest.camera:get_look_dir(), 4))
  60                         local ray = minetest.raycast(pos, pos2, false, false)
  61
  62                         local pointed_thing = ray:next()
  63                         if pointed_thing and pointed_thing.under and all_nodes[minetest.get_node_or_nil(pointed_thing.under).name] then
  64                                 local node = minetest.get_node_or_nil(pointed_thing.under).name
  65                                 if hud_item_name ~= node then
  66                                         local def = minetest.get_item_def(node)
  67                                         minetest.localplayer:hud_change(hud_name, "text", def.description)
  68                                         minetest.localplayer:hud_change(hud_node, "text", node)
  69                                         minetest.localplayer:hud_change(hud_bg,   "text", "waila.png")
  70                                         hud_item_name = node
  71                                 end
  72                         else
  73                                 --make hud invisible
  74                                 minetest.localplayer:hud_change(hud_name, "text", "")
  75                                 minetest.localplayer:hud_change(hud_node, "text", "")
  76                                 minetest.localplayer:hud_change(hud_bg,   "text", "")
  77                                 hud_item_name = ""
  78                         end
  79                 end
  80
  81
  82                 --waih
  83                 local item = minetest.localplayer:get_wielded_item():get_name()
  84                 if waih_timer > 0 then
  85                         waih_timer = waih_timer - 0.01
  86                         if waih_timer <= 0 then
  87                                 waih_timer = 0
  88                                 minetest.localplayer:hud_change(waih_name, "text", "")
  89                         end
  90                 end
  91                 if item ~= old_item then
  92                         waih_timer = 1
  93                         local waih_text
  94                         if all_nodes[item] then
  95                                 waih_text = minetest.get_item_def(item).description or item
  96                         else
  97                                 waih_text = "Unknown"
  98                         end
  99                         minetest.localplayer:hud_change(waih_name, "text", waih_text)
 100                 end
 101                 old_item = item
 102         elseif nodes then
 103                 all_nodes = table.copy(nodes)
 104         end
 105
 106
 107         minetest.after(0.01, function()
 108                 update()
 109         end)
 110 end
 111
 112 update()