mods/headbars/init.lua

   1 --
   2 -- Headbars mod
   3 -- By Kaadmy, for Pixture
   4 --
   5
   6 headbars = {}
   7
   8 local enable_damage = minetest.settings:get_bool("enable_damage")
   9
  10 local enable_headbars = minetest.settings:get_bool("headbars_enable")
  11 if enable_headbars == nil then enable_headbars = true end
  12
  13 local headbars_scale = tonumber(minetest.settings:get("headbars_scale")) or 1.0
  14
  15 function headbars.get_sprite(icon, background, max, amt)
  16    local img = "[combine:" .. (max * 8) .. "x16:0,0=ui_null.png:0,0=ui_null.png"
  17
  18    if amt < max then
  19       for i = 0, max / 2 do
  20          img = img .. "^[combine:16x16:0,0=ui_null.png:" .. (i * 16) .. ",0=" .. background
  21       end
  22    end
  23
  24    img = img .. "^([combine:" .. (max * 8) .. "x16:0,0=ui_null.png:0,0=ui_null.png"
  25
  26    for i = 0, max / 2 do
  27       if i < (amt - 1) / 2 then
  28          img = img .. "^[combine:" .. (max * 8) .. "x16:0,0=ui_null.png:" .. (i * 16) .. ",0=" .. icon
  29       elseif i < amt / 2 then
  30          img = img .. "^[combine:" .. (max * 8) .. "x16:0,0=ui_null.png:" .. (i * 16) .. ",0=" .. icon
  31          img = img .. "^[combine:" .. (max * 8) .. "x16:0,0=ui_null.png:" .. (i * 16) .. ",0=headbars_half.png"
  32       end
  33    end
  34
  35    img = img .. "^[makealpha:255,0,255)"
  36
  37    return img
  38 end
  39
  40 minetest.register_entity(
  41    "headbars:hpbar",
  42    {
  43       visual = "sprite",
  44       visual_size = {x = 1 * headbars_scale, y = 0.1 * headbars_scale, z = 1},
  45       textures = {headbars.get_sprite("heart.png", "ui_null.png", 20, 20)},
  46
  47       glow = 5,
  48
  49       physical = false,
  50       collisionbox = {0, 0, 0, 0, 0, 0},
  51
  52       on_step = function(self, dtime)
  53          local ent = self.wielder
  54
  55          if ent == nil or (minetest.get_player_by_name(ent:get_player_name(0)) == nil) then
  56             self.object:remove()
  57             return
  58          end
  59
  60          local hp = ent:get_hp()
  61
  62          self.object:set_properties({textures = {headbars.get_sprite("heart.png", "headbars_heart_bg.png", 20, hp)}})
  63       end,
  64 })
  65
  66 function headbars.attach_hpbar(to)
  67    if not enable_damage then return end
  68    if not enable_headbars then return end
  69
  70    local pos = to:getpos()
  71    local bar = minetest.add_entity(pos, "headbars:hpbar")
  72
  73    if bar == nil then return end
  74
  75    --   local attach_pos = {x = 0, y = 0, z = 0}
  76    local attach_pos = {x = 0, y = 9, z = 0}
  77
  78    bar:set_attach(to, "", attach_pos, {x = 0, y = 0, z = 0})
  79    bar = bar:get_luaentity()
  80    bar.wielder = to
  81 end
  82
  83 minetest.register_on_joinplayer(headbars.attach_hpbar)
  84 default.log("mod:headbars", "loaded")