Traitor/mods/tasks/forcefield_gen.lua

local formspec_good =
   'formspec_version[3]'..
   'size[10,12]'..
   'bgcolor[;neither]'..
   'background[-1,-1;12,14;tasks_forcefield_working_bg.png]'..
   'image[3,1;1,1;tasks_quantum_coil.png]'..
   'hypertext[0,4.75;4.,3;nil;<global halign=center valign=middle><style color=black size=30>Shields at 100%<style>]'

local function formspec_bad(pos)
   local spos = pos.x ..','.. pos.y ..','.. pos.z
   local formspec =
      'formspec_version[3]'..
      'size[10,12]'..
      'bgcolor[;neither]'..
      'background[-1,-1;12,14;tasks_forcefield_bg.png]'..
      'hypertext[0,4.75;4.,3;nil;<global halign=center valign=middle><style color=black size=30>Shields down!!! New Quantum coil needed ASAP.<style>]'..
      'button_exit[6.25,6.25;3,1;gimme;Grab A Request Form]'..
      'list[nodemeta:'..spos..';part;3,1;1,1;]'..
      'listcolors[#10101020;#7DA3CC20]'..
      'list[current_player;main;.125,9.75;8,2;]'..
      'listring[current_player;main]'..
      'listring[nodemeta:'..spos..';part]'..
      'image[3,1;1,1;tasks_quantum_coil_line.png]'
   return formspec
end

   local on_box = {
      type = 'fixed',
         fixed = {
            {-.5, -.5, -.5, .5, .5, .5},
            {-1.5, -.5, 1.45, 1.5, 1.5, 1.5}},}

local off_box = {
   type = 'fixed',
      fixed = {
         {-.5, -.5, -.5, .5, .5, .5},},}

minetest.register_node('tasks:forcefield_gen_on',{
   description = 'Forcefield Generator',
   drawtype = 'mesh',
   mesh = 'tasks_forcefield_gen.obj',
   tiles = {name = 'tasks_forcefield_gen_on.png'},
   paramtype = 'light',
   paramtype2 = 'facedir',
   light_source = 12,
   selection_box = on_box,
   collision_box = on_box,
   groups = {breakable = 1, tasks=1},
   on_construct = function(pos)
      tasks.on_construct(pos, 'Forcefield Generator', 'More like hole Generator')
   end,
   on_rightclick = function(pos, node, clicker)
      tasks.right_click_on(pos, node, clicker, formspec_good)
   end,
   on_timer = function(pos)
      local node = minetest.get_node(pos)
      local meta = minetest.get_meta(pos)
      local infotext = meta:get_string('info_repair')
      meta:set_string('infotext', infotext)
      minetest.swap_node(pos, {name = 'tasks:forcefield_gen_off', param2 = node.param2})
   end,
})

minetest.register_node('tasks:forcefield_gen_off',{
   description = 'Forcefield Generator',
   drawtype = 'mesh',
   mesh = 'tasks_forcefield_gen.obj',
   tiles = {name = 'tasks_forcefield_gen_off.png'},
   paramtype = 'light',
   paramtype2 = 'facedir',
   selection_box = off_box,
   collision_box = off_box,
   groups = {breakable = 1, not_in_creative_inventory=1, tasks=1},
   drop = 'tasks:forcefield_gen_on',
   req_form = 'tasks:quantum_coil_req',
   req_count = 2,
   on_rightclick = function(pos, node, clicker)
      tasks.right_click_off(pos, node, clicker, formspec_bad(pos))
   end,
   allow_metadata_inventory_put = function(pos, listname, index, stack, player)
      if listname == 'part' then
         if stack:get_name() == 'tasks:quantum_coil' then
            local player_attributes = player:get_meta()
            local luck = player_attributes:get_int('luck')
            if luck*2 < math.random(10) then
               minetest.chat_send_player(player:get_player_name(), 'You drop the coil, fortunately it doesn\'t break.')
               return 0
            else
               return 1
            end
         end
         return 0
      end
   end,
   on_metadata_inventory_put = function(pos, listname, index, stack, player)
      local name = player:get_player_name()
      local meta = minetest.get_meta(pos)
      local xp = meta:get_int('xp') or 10
      local inv = meta:get_inventory()
      local node = minetest.get_node(pos)
      local timer = minetest.get_node_timer(pos)
      local min = meta:get_int('time_min') or 300
      local max = meta:get_int('time_max') or 600
      local random_number = math.random(min,max)
      local infotext = meta:get_string('info_working')
      inv:set_stack('part', 1, '')
      minetest.swap_node(pos, {name = 'tasks:forcefield_gen_on', param2 = node.param2})
      minetest.close_formspec(name, 'tasks:part_req_form')
      meta:set_string('infotext', infotext)
      tasks.only_add_xp(xp, name)
      timer:start(random_number)
   end,
   })