builtin/game/item.lua

   1 -- Minetest: builtin/item.lua
   2
   3 local builtin_shared = ...
   4
   5 local function copy_pointed_thing(pointed_thing)
   6         return {
   7                 type  = pointed_thing.type,
   8                 above = vector.new(pointed_thing.above),
   9                 under = vector.new(pointed_thing.under),
  10                 ref   = pointed_thing.ref,
  11         }
  12 end
  13
  14 --
  15 -- Item definition helpers
  16 --
  17
  18 function core.get_pointed_thing_position(pointed_thing, above)
  19         if pointed_thing.type == "node" then
  20                 if above then
  21                         -- The position where a node would be placed
  22                         return pointed_thing.above
  23                 end
  24                 -- The position where a node would be dug
  25                 return pointed_thing.under
  26         elseif pointed_thing.type == "object" then
  27                 return pointed_thing.ref and pointed_thing.ref:get_pos()
  28         end
  29 end
  30
  31 local function has_all_groups(tbl, required_groups)
  32         if type(required_groups) == "string" then
  33                 return (tbl[required_groups] or 0) ~= 0
  34         end
  35         for _, group in ipairs(required_groups) do
  36                 if (tbl[group] or 0) == 0 then
  37                         return false
  38                 end
  39         end
  40         return true
  41 end
  42
  43 function core.get_node_drops(node, toolname)
  44         -- Compatibility, if node is string
  45         local nodename = node
  46         local param2 = 0
  47         -- New format, if node is table
  48         if (type(node) == "table") then
  49                 nodename = node.name
  50                 param2 = node.param2
  51         end
  52         local def = core.registered_nodes[nodename]
  53         local drop = def and def.drop
  54         local ptype = def and def.paramtype2
  55         -- get color, if there is color (otherwise nil)
  56         local palette_index = core.strip_param2_color(param2, ptype)
  57         if drop == nil then
  58                 -- default drop
  59                 if palette_index then
  60                         local stack = ItemStack(nodename)
  61                         stack:get_meta():set_int("palette_index", palette_index)
  62                         return {stack:to_string()}
  63                 end
  64                 return {nodename}
  65         elseif type(drop) == "string" then
  66                 -- itemstring drop
  67                 return drop ~= "" and {drop} or {}
  68         elseif drop.items == nil then
  69                 -- drop = {} to disable default drop
  70                 return {}
  71         end
  72
  73         -- Extended drop table
  74         local got_items = {}
  75         local got_count = 0
  76         for _, item in ipairs(drop.items) do
  77                 local good_rarity = true
  78                 local good_tool = true
  79                 if item.rarity ~= nil then
  80                         good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
  81                 end
  82                 if item.tools ~= nil or item.tool_groups ~= nil then
  83                         good_tool = false
  84                 end
  85                 if item.tools ~= nil and toolname then
  86                         for _, tool in ipairs(item.tools) do
  87                                 if tool:sub(1, 1) == '~' then
  88                                         good_tool = toolname:find(tool:sub(2)) ~= nil
  89                                 else
  90                                         good_tool = toolname == tool
  91                                 end
  92                                 if good_tool then
  93                                         break
  94                                 end
  95                         end
  96                 end
  97                 if item.tool_groups ~= nil and toolname then
  98                         local tooldef = core.registered_items[toolname]
  99                         if tooldef ~= nil and type(tooldef.groups) == "table" then
 100                                 if type(item.tool_groups) == "string" then
 101                                         -- tool_groups can be a string which specifies the required group
 102                                         good_tool = core.get_item_group(toolname, item.tool_groups) ~= 0
 103                                 else
 104                                         -- tool_groups can be a list of sufficient requirements.
 105                                         -- i.e. if any item in the list can be satisfied then the tool is good
 106                                         assert(type(item.tool_groups) == "table")
 107                                         for _, required_groups in ipairs(item.tool_groups) do
 108                                                 -- required_groups can be either a string (a single group),
 109                                                 -- or an array of strings where all must be in tooldef.groups
 110                                                 good_tool = has_all_groups(tooldef.groups, required_groups)
 111                                                 if good_tool then
 112                                                         break
 113                                                 end
 114                                         end
 115                                 end
 116                         end
 117                 end
 118                 if good_rarity and good_tool then
 119                         got_count = got_count + 1
 120                         for _, add_item in ipairs(item.items) do
 121                                 -- add color, if necessary
 122                                 if item.inherit_color and palette_index then
 123                                         local stack = ItemStack(add_item)
 124                                         stack:get_meta():set_int("palette_index", palette_index)
 125                                         add_item = stack:to_string()
 126                                 end
 127                                 got_items[#got_items+1] = add_item
 128                         end
 129                         if drop.max_items ~= nil and got_count == drop.max_items then
 130                                 break
 131                         end
 132                 end
 133         end
 134         return got_items
 135 end
 136
 137 local function user_name(user)
 138         return user and user:get_player_name() or ""
 139 end
 140
 141 -- Returns a logging function. For empty names, does not log.
 142 local function make_log(name)
 143         return name ~= "" and core.log or function() end
 144 end
 145
 146 function core.item_place_node(itemstack, placer, pointed_thing, param2,
 147                 prevent_after_place)
 148         local def = itemstack:get_definition()
 149         if def.type ~= "node" or pointed_thing.type ~= "node" then
 150                 return itemstack, nil
 151         end
 152
 153         local under = pointed_thing.under
 154         local oldnode_under = core.get_node_or_nil(under)
 155         local above = pointed_thing.above
 156         local oldnode_above = core.get_node_or_nil(above)
 157         local playername = user_name(placer)
 158         local log = make_log(playername)
 159
 160         if not oldnode_under or not oldnode_above then
 161                 log("info", playername .. " tried to place"
 162                         .. " node in unloaded position " .. core.pos_to_string(above))
 163                 return itemstack, nil
 164         end
 165
 166         local olddef_under = core.registered_nodes[oldnode_under.name]
 167         olddef_under = olddef_under or core.nodedef_default
 168         local olddef_above = core.registered_nodes[oldnode_above.name]
 169         olddef_above = olddef_above or core.nodedef_default
 170
 171         if not olddef_above.buildable_to and not olddef_under.buildable_to then
 172                 log("info", playername .. " tried to place"
 173                         .. " node in invalid position " .. core.pos_to_string(above)
 174                         .. ", replacing " .. oldnode_above.name)
 175                 return itemstack, nil
 176         end
 177
 178         -- Place above pointed node
 179         local place_to = vector.new(above)
 180
 181         -- If node under is buildable_to, place into it instead (eg. snow)
 182         if olddef_under.buildable_to then
 183                 log("info", "node under is buildable to")
 184                 place_to = vector.new(under)
 185         end
 186
 187         if core.is_protected(place_to, playername) then
 188                 log("action", playername
 189                                 .. " tried to place " .. def.name
 190                                 .. " at protected position "
 191                                 .. core.pos_to_string(place_to))
 192                 core.record_protection_violation(place_to, playername)
 193                 return itemstack, nil
 194         end
 195
 196         local oldnode = core.get_node(place_to)
 197         local newnode = {name = def.name, param1 = 0, param2 = param2 or 0}
 198
 199         -- Calculate direction for wall mounted stuff like torches and signs
 200         if def.place_param2 ~= nil then
 201                 newnode.param2 = def.place_param2
 202         elseif (def.paramtype2 == "wallmounted" or
 203                         def.paramtype2 == "colorwallmounted") and not param2 then
 204                 local dir = vector.subtract(under, above)
 205                 newnode.param2 = core.dir_to_wallmounted(dir)
 206         -- Calculate the direction for furnaces and chests and stuff
 207         elseif (def.paramtype2 == "facedir" or
 208                         def.paramtype2 == "colorfacedir") and not param2 then
 209                 local placer_pos = placer and placer:get_pos()
 210                 if placer_pos then
 211                         local dir = vector.subtract(above, placer_pos)
 212                         newnode.param2 = core.dir_to_facedir(dir)
 213                         log("info", "facedir: " .. newnode.param2)
 214                 end
 215         end
 216
 217         local metatable = itemstack:get_meta():to_table().fields
 218
 219         -- Transfer color information
 220         if metatable.palette_index and not def.place_param2 then
 221                 local color_divisor = nil
 222                 if def.paramtype2 == "color" then
 223                         color_divisor = 1
 224                 elseif def.paramtype2 == "colorwallmounted" then
 225                         color_divisor = 8
 226                 elseif def.paramtype2 == "colorfacedir" then
 227                         color_divisor = 32
 228                 elseif def.paramtype2 == "colordegrotate" then
 229                         color_divisor = 32
 230                 end
 231                 if color_divisor then
 232                         local color = math.floor(metatable.palette_index / color_divisor)
 233                         local other = newnode.param2 % color_divisor
 234                         newnode.param2 = color * color_divisor + other
 235                 end
 236         end
 237
 238         -- Check if the node is attached and if it can be placed there
 239         if core.get_item_group(def.name, "attached_node") ~= 0 and
 240                 not builtin_shared.check_attached_node(place_to, newnode) then
 241                 log("action", "attached node " .. def.name ..
 242                         " can not be placed at " .. core.pos_to_string(place_to))
 243                 return itemstack, nil
 244         end
 245
 246         log("action", playername .. " places node "
 247                 .. def.name .. " at " .. core.pos_to_string(place_to))
 248
 249         -- Add node and update
 250         core.add_node(place_to, newnode)
 251
 252         -- Play sound if it was done by a player
 253         if playername ~= "" and def.sounds and def.sounds.place then
 254                 core.sound_play(def.sounds.place, {
 255                         pos = place_to,
 256                         exclude_player = playername,
 257                 }, true)
 258         end
 259
 260         local take_item = true
 261
 262         -- Run callback
 263         if def.after_place_node and not prevent_after_place then
 264                 -- Deepcopy place_to and pointed_thing because callback can modify it
 265                 local place_to_copy = vector.new(place_to)
 266                 local pointed_thing_copy = copy_pointed_thing(pointed_thing)
 267                 if def.after_place_node(place_to_copy, placer, itemstack,
 268                                 pointed_thing_copy) then
 269                         take_item = false
 270                 end
 271         end
 272
 273         -- Run script hook
 274         for _, callback in ipairs(core.registered_on_placenodes) do
 275                 -- Deepcopy pos, node and pointed_thing because callback can modify them
 276                 local place_to_copy = vector.new(place_to)
 277                 local newnode_copy = {name=newnode.name, param1=newnode.param1, param2=newnode.param2}
 278                 local oldnode_copy = {name=oldnode.name, param1=oldnode.param1, param2=oldnode.param2}
 279                 local pointed_thing_copy = copy_pointed_thing(pointed_thing)
 280                 if callback(place_to_copy, newnode_copy, placer, oldnode_copy, itemstack, pointed_thing_copy) then
 281                         take_item = false
 282                 end
 283         end
 284
 285         if take_item then
 286                 itemstack:take_item()
 287         end
 288         return itemstack, place_to
 289 end
 290
 291 -- deprecated, item_place does not call this
 292 function core.item_place_object(itemstack, placer, pointed_thing)
 293         local pos = core.get_pointed_thing_position(pointed_thing, true)
 294         if pos ~= nil then
 295                 local item = itemstack:take_item()
 296                 core.add_item(pos, item)
 297         end
 298         return itemstack
 299 end
 300
 301 function core.item_place(itemstack, placer, pointed_thing, param2)
 302         -- Call on_rightclick if the pointed node defines it
 303         if pointed_thing.type == "node" and placer and
 304                         not placer:get_player_control().sneak then
 305                 local n = core.get_node(pointed_thing.under)
 306                 local nn = n.name
 307                 if core.registered_nodes[nn] and core.registered_nodes[nn].on_rightclick then
 308                         return core.registered_nodes[nn].on_rightclick(pointed_thing.under, n,
 309                                         placer, itemstack, pointed_thing) or itemstack, nil
 310                 end
 311         end
 312
 313         -- Place if node, otherwise do nothing
 314         if itemstack:get_definition().type == "node" then
 315                 return core.item_place_node(itemstack, placer, pointed_thing, param2)
 316         end
 317         return itemstack, nil
 318 end
 319
 320 function core.item_secondary_use(itemstack, placer)
 321         return itemstack
 322 end
 323
 324 function core.item_drop(itemstack, dropper, pos)
 325         local dropper_is_player = dropper and dropper:is_player()
 326         local p = table.copy(pos)
 327         local cnt = itemstack:get_count()
 328         if dropper_is_player then
 329                 p.y = p.y + 1.2
 330         end
 331         local item = itemstack:take_item(cnt)
 332         local obj = core.add_item(p, item)
 333         if obj then
 334                 if dropper_is_player then
 335                         local dir = dropper:get_look_dir()
 336                         dir.x = dir.x * 2.9
 337                         dir.y = dir.y * 2.9 + 2
 338                         dir.z = dir.z * 2.9
 339                         obj:set_velocity(dir)
 340                         obj:get_luaentity().dropped_by = dropper:get_player_name()
 341                 end
 342                 return itemstack
 343         end
 344         -- If we reach this, adding the object to the
 345         -- environment failed
 346 end
 347
 348 function core.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)
 349         for _, callback in pairs(core.registered_on_item_eats) do
 350                 local result = callback(hp_change, replace_with_item, itemstack, user, pointed_thing)
 351                 if result then
 352                         return result
 353                 end
 354         end
 355         -- read definition before potentially emptying the stack
 356         local def = itemstack:get_definition()
 357         if itemstack:take_item():is_empty() then
 358                 return itemstack
 359         end
 360
 361         if def and def.sound and def.sound.eat then
 362                 core.sound_play(def.sound.eat, {
 363                         pos = user:get_pos(),
 364                         max_hear_distance = 16
 365                 }, true)
 366         end
 367
 368         -- Changing hp might kill the player causing mods to do who-knows-what to the
 369         -- inventory, so do this before set_hp().
 370         if replace_with_item then
 371                 if itemstack:is_empty() then
 372                         itemstack:add_item(replace_with_item)
 373                 else
 374                         local inv = user:get_inventory()
 375                         -- Check if inv is null, since non-players don't have one
 376                         if inv and inv:room_for_item("main", {name=replace_with_item}) then
 377                                 inv:add_item("main", replace_with_item)
 378                         else
 379                                 local pos = user:get_pos()
 380                                 pos.y = math.floor(pos.y + 0.5)
 381                                 core.add_item(pos, replace_with_item)
 382                         end
 383                 end
 384         end
 385         user:set_wielded_item(itemstack)
 386
 387         user:set_hp(user:get_hp() + hp_change)
 388
 389         return nil -- don't overwrite wield item a second time
 390 end
 391
 392 function core.item_eat(hp_change, replace_with_item)
 393         return function(itemstack, user, pointed_thing)  -- closure
 394                 if user then
 395                         return core.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)
 396                 end
 397         end
 398 end
 399
 400 function core.node_punch(pos, node, puncher, pointed_thing)
 401         -- Run script hook
 402         for _, callback in ipairs(core.registered_on_punchnodes) do
 403                 -- Copy pos and node because callback can modify them
 404                 local pos_copy = vector.new(pos)
 405                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 406                 local pointed_thing_copy = pointed_thing and copy_pointed_thing(pointed_thing) or nil
 407                 callback(pos_copy, node_copy, puncher, pointed_thing_copy)
 408         end
 409 end
 410
 411 function core.handle_node_drops(pos, drops, digger)
 412         -- Add dropped items to object's inventory
 413         local inv = digger and digger:get_inventory()
 414         local give_item
 415         if inv then
 416                 give_item = function(item)
 417                         return inv:add_item("main", item)
 418                 end
 419         else
 420                 give_item = function(item)
 421                         -- itemstring to ItemStack for left:is_empty()
 422                         return ItemStack(item)
 423                 end
 424         end
 425
 426         for _, dropped_item in pairs(drops) do
 427                 local left = give_item(dropped_item)
 428                 if not left:is_empty() then
 429                         local p = vector.offset(pos,
 430                                 math.random()/2-0.25,
 431                                 math.random()/2-0.25,
 432                                 math.random()/2-0.25
 433                         )
 434                         core.add_item(p, left)
 435                 end
 436         end
 437 end
 438
 439 function core.node_dig(pos, node, digger)
 440         local diggername = user_name(digger)
 441         local log = make_log(diggername)
 442         local def = core.registered_nodes[node.name]
 443         -- Copy pos because the callback could modify it
 444         if def and (not def.diggable or
 445                         (def.can_dig and not def.can_dig(vector.new(pos), digger))) then
 446                 log("info", diggername .. " tried to dig "
 447                         .. node.name .. " which is not diggable "
 448                         .. core.pos_to_string(pos))
 449                 return false
 450         end
 451
 452         if core.is_protected(pos, diggername) then
 453                 log("action", diggername
 454                                 .. " tried to dig " .. node.name
 455                                 .. " at protected position "
 456                                 .. core.pos_to_string(pos))
 457                 core.record_protection_violation(pos, diggername)
 458                 return false
 459         end
 460
 461         log('action', diggername .. " digs "
 462                 .. node.name .. " at " .. core.pos_to_string(pos))
 463
 464         local wielded = digger and digger:get_wielded_item()
 465         local drops = core.get_node_drops(node, wielded and wielded:get_name())
 466
 467         if wielded then
 468                 local wdef = wielded:get_definition()
 469                 local tp = wielded:get_tool_capabilities()
 470                 local dp = core.get_dig_params(def and def.groups, tp, wielded:get_wear())
 471                 if wdef and wdef.after_use then
 472                         wielded = wdef.after_use(wielded, digger, node, dp) or wielded
 473                 else
 474                         -- Wear out tool
 475                         if not core.is_creative_enabled(diggername) then
 476                                 wielded:add_wear(dp.wear)
 477                                 if wielded:get_count() == 0 and wdef.sound and wdef.sound.breaks then
 478                                         core.sound_play(wdef.sound.breaks, {
 479                                                 pos = pos,
 480                                                 gain = 0.5
 481                                         }, true)
 482                                 end
 483                         end
 484                 end
 485                 digger:set_wielded_item(wielded)
 486         end
 487
 488         -- Check to see if metadata should be preserved.
 489         if def and def.preserve_metadata then
 490                 local oldmeta = core.get_meta(pos):to_table().fields
 491                 -- Copy pos and node because the callback can modify them.
 492                 local pos_copy = vector.new(pos)
 493                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 494                 local drop_stacks = {}
 495                 for k, v in pairs(drops) do
 496                         drop_stacks[k] = ItemStack(v)
 497                 end
 498                 drops = drop_stacks
 499                 def.preserve_metadata(pos_copy, node_copy, oldmeta, drops)
 500         end
 501
 502         -- Handle drops
 503         core.handle_node_drops(pos, drops, digger)
 504
 505         local oldmetadata = nil
 506         if def and def.after_dig_node then
 507                 oldmetadata = core.get_meta(pos):to_table()
 508         end
 509
 510         -- Remove node and update
 511         core.remove_node(pos)
 512
 513         -- Play sound if it was done by a player
 514         if diggername ~= "" and def and def.sounds and def.sounds.dug then
 515                 core.sound_play(def.sounds.dug, {
 516                         pos = pos,
 517                         exclude_player = diggername,
 518                 }, true)
 519         end
 520
 521         -- Run callback
 522         if def and def.after_dig_node then
 523                 -- Copy pos and node because callback can modify them
 524                 local pos_copy = vector.new(pos)
 525                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 526                 def.after_dig_node(pos_copy, node_copy, oldmetadata, digger)
 527         end
 528
 529         -- Run script hook
 530         for _, callback in ipairs(core.registered_on_dignodes) do
 531                 local origin = core.callback_origins[callback]
 532                 core.set_last_run_mod(origin.mod)
 533
 534                 -- Copy pos and node because callback can modify them
 535                 local pos_copy = vector.new(pos)
 536                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 537                 callback(pos_copy, node_copy, digger)
 538         end
 539
 540         return true
 541 end
 542
 543 function core.itemstring_with_palette(item, palette_index)
 544         local stack = ItemStack(item) -- convert to ItemStack
 545         stack:get_meta():set_int("palette_index", palette_index)
 546         return stack:to_string()
 547 end
 548
 549 function core.itemstring_with_color(item, colorstring)
 550         local stack = ItemStack(item) -- convert to ItemStack
 551         stack:get_meta():set_string("color", colorstring)
 552         return stack:to_string()
 553 end
 554
 555 -- This is used to allow mods to redefine core.item_place and so on
 556 -- NOTE: This is not the preferred way. Preferred way is to provide enough
 557 --       callbacks to not require redefining global functions. -celeron55
 558 local function redef_wrapper(table, name)
 559         return function(...)
 560                 return table[name](...)
 561         end
 562 end
 563
 564 --
 565 -- Item definition defaults
 566 --
 567
 568 local default_stack_max = tonumber(core.settings:get("default_stack_max")) or 99
 569
 570 core.nodedef_default = {
 571         -- Item properties
 572         type="node",
 573         -- name intentionally not defined here
 574         description = "",
 575         groups = {},
 576         inventory_image = "",
 577         wield_image = "",
 578         wield_scale = vector.new(1, 1, 1),
 579         stack_max = default_stack_max,
 580         usable = false,
 581         liquids_pointable = false,
 582         tool_capabilities = nil,
 583         node_placement_prediction = nil,
 584
 585         -- Interaction callbacks
 586         on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 587         on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 588         on_use = nil,
 589         can_dig = nil,
 590
 591         on_punch = redef_wrapper(core, 'node_punch'), -- core.node_punch
 592         on_rightclick = nil,
 593         on_dig = redef_wrapper(core, 'node_dig'), -- core.node_dig
 594
 595         on_receive_fields = nil,
 596
 597         -- Node properties
 598         drawtype = "normal",
 599         visual_scale = 1.0,
 600         -- Don't define these because otherwise the old tile_images and
 601         -- special_materials wouldn't be read
 602         --tiles ={""},
 603         --special_tiles = {
 604         --      {name="", backface_culling=true},
 605         --      {name="", backface_culling=true},
 606         --},
 607         post_effect_color = {a=0, r=0, g=0, b=0},
 608         paramtype = "none",
 609         paramtype2 = "none",
 610         is_ground_content = true,
 611         sunlight_propagates = false,
 612         walkable = true,
 613         pointable = true,
 614         diggable = true,
 615         climbable = false,
 616         buildable_to = false,
 617         floodable = false,
 618         liquidtype = "none",
 619         liquid_alternative_flowing = "",
 620         liquid_alternative_source = "",
 621         liquid_viscosity = 0,
 622         drowning = 0,
 623         light_source = 0,
 624         damage_per_second = 0,
 625         selection_box = {type="regular"},
 626         legacy_facedir_simple = false,
 627         legacy_wallmounted = false,
 628 }
 629
 630 core.craftitemdef_default = {
 631         type="craft",
 632         -- name intentionally not defined here
 633         description = "",
 634         groups = {},
 635         inventory_image = "",
 636         wield_image = "",
 637         wield_scale = vector.new(1, 1, 1),
 638         stack_max = default_stack_max,
 639         liquids_pointable = false,
 640         tool_capabilities = nil,
 641
 642         -- Interaction callbacks
 643         on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 644         on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 645         on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 646         on_use = nil,
 647 }
 648
 649 core.tooldef_default = {
 650         type="tool",
 651         -- name intentionally not defined here
 652         description = "",
 653         groups = {},
 654         inventory_image = "",
 655         wield_image = "",
 656         wield_scale = vector.new(1, 1, 1),
 657         stack_max = 1,
 658         liquids_pointable = false,
 659         tool_capabilities = nil,
 660
 661         -- Interaction callbacks
 662         on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 663         on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 664         on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 665         on_use = nil,
 666 }
 667
 668 core.noneitemdef_default = {  -- This is used for the hand and unknown items
 669         type="none",
 670         -- name intentionally not defined here
 671         description = "",
 672         groups = {},
 673         inventory_image = "",
 674         wield_image = "",
 675         wield_scale = vector.new(1, 1, 1),
 676         stack_max = default_stack_max,
 677         liquids_pointable = false,
 678         tool_capabilities = nil,
 679
 680         -- Interaction callbacks
 681         on_place = redef_wrapper(core, 'item_place'),
 682         on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 683         on_drop = nil,
 684         on_use = nil,
 685 }