mods/screwdriver/init.lua

   1 local function nextrange(x, max)
   2         x = x + 1
   3         if x > max then
   4                 x = 0
   5         end
   6         return x
   7 end
   8
   9 local ROTATE_FACE = 1
  10 local ROTATE_AXIS = 2
  11 local USES = 10
  12
  13 -- Handles rotation
  14 local function screwdriver_handler(itemstack, user, pointed_thing, mode)
  15         if pointed_thing.type ~= "node" then
  16                 return
  17         end
  18
  19         local pos = pointed_thing.under
  20
  21         if minetest.is_protected(pos, user:get_player_name()) then
  22                 minetest.record_protection_violation(pos, user:get_player_name())
  23                 return
  24         end
  25
  26         local node = minetest.get_node(pos)
  27         local ndef = minetest.registered_nodes[node.name]
  28         if not ndef or not ndef.paramtype2 == "facedir" or
  29                         (ndef.drawtype == "nodebox" and
  30                         not ndef.node_box.type == "fixed") or
  31                         node.param2 == nil then
  32                 return
  33         end
  34
  35         if ndef.can_dig and not ndef.can_dig(pos, user) then
  36                 return
  37         end
  38
  39         -- Set param2
  40         local rotationPart = node.param2 % 32 -- get first 4 bits
  41         local preservePart = node.param2 - rotationPart
  42
  43         local axisdir = math.floor(rotationPart / 4)
  44         local rotation = rotationPart - axisdir * 4
  45         if mode == ROTATE_FACE then
  46                 rotationPart = axisdir * 4 + nextrange(rotation, 3)
  47         elseif mode == ROTATE_AXIS then
  48                 rotationPart = nextrange(axisdir, 5) * 4
  49         end
  50
  51         node.param2 = preservePart + rotationPart
  52         minetest.swap_node(pos, node)
  53
  54         if not minetest.setting_getbool("creative_mode") then
  55                 itemstack:add_wear(65535 / (USES - 1))
  56         end
  57
  58         return itemstack
  59 end
  60
  61 -- Screwdriver
  62 minetest.register_tool("screwdriver:screwdriver", {
  63         description = "Screwdriver (left-click rotates face, right-click rotates axis)",
  64         inventory_image = "screwdriver.png",
  65         on_use = function(itemstack, user, pointed_thing)
  66                 screwdriver_handler(itemstack, user, pointed_thing, ROTATE_FACE)
  67                 return itemstack
  68         end,
  69         on_place = function(itemstack, user, pointed_thing)
  70                 screwdriver_handler(itemstack, user, pointed_thing, ROTATE_AXIS)
  71                 return itemstack
  72         end,
  73 })
  74
  75
  76 minetest.register_craft({
  77         output = "screwdriver:screwdriver",
  78         recipe = {
  79                 {"default:steel_ingot"},
  80                 {"group:stick"}
  81         }
  82 })
  83
  84 minetest.register_alias("screwdriver:screwdriver1", "screwdriver:screwdriver")
  85 minetest.register_alias("screwdriver:screwdriver2", "screwdriver:screwdriver")
  86 minetest.register_alias("screwdriver:screwdriver3", "screwdriver:screwdriver")
  87 minetest.register_alias("screwdriver:screwdriver4", "screwdriver:screwdriver")