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.inventorycube(img1, img2, img3)
  19         img2 = img2 or img1
  20         img3 = img3 or img1
  21         return "[inventorycube"
  22                         .. "{" .. img1:gsub("%^", "&")
  23                         .. "{" .. img2:gsub("%^", "&")
  24                         .. "{" .. img3:gsub("%^", "&")
  25 end
  26
  27 function core.get_pointed_thing_position(pointed_thing, above)
  28         if pointed_thing.type == "node" then
  29                 if above then
  30                         -- The position where a node would be placed
  31                         return pointed_thing.above
  32                 end
  33                 -- The position where a node would be dug
  34                 return pointed_thing.under
  35         elseif pointed_thing.type == "object" then
  36                 return pointed_thing.ref and pointed_thing.ref:getpos()
  37         end
  38 end
  39
  40 function core.dir_to_facedir(dir, is6d)
  41         --account for y if requested
  42         if is6d and math.abs(dir.y) > math.abs(dir.x) and math.abs(dir.y) > math.abs(dir.z) then
  43
  44                 --from above
  45                 if dir.y < 0 then
  46                         if math.abs(dir.x) > math.abs(dir.z) then
  47                                 if dir.x < 0 then
  48                                         return 19
  49                                 else
  50                                         return 13
  51                                 end
  52                         else
  53                                 if dir.z < 0 then
  54                                         return 10
  55                                 else
  56                                         return 4
  57                                 end
  58                         end
  59
  60                 --from below
  61                 else
  62                         if math.abs(dir.x) > math.abs(dir.z) then
  63                                 if dir.x < 0 then
  64                                         return 15
  65                                 else
  66                                         return 17
  67                                 end
  68                         else
  69                                 if dir.z < 0 then
  70                                         return 6
  71                                 else
  72                                         return 8
  73                                 end
  74                         end
  75                 end
  76
  77         --otherwise, place horizontally
  78         elseif math.abs(dir.x) > math.abs(dir.z) then
  79                 if dir.x < 0 then
  80                         return 3
  81                 else
  82                         return 1
  83                 end
  84         else
  85                 if dir.z < 0 then
  86                         return 2
  87                 else
  88                         return 0
  89                 end
  90         end
  91 end
  92
  93 -- Table of possible dirs
  94 local facedir_to_dir = {
  95         {x= 0, y=0,  z= 1},
  96         {x= 1, y=0,  z= 0},
  97         {x= 0, y=0,  z=-1},
  98         {x=-1, y=0,  z= 0},
  99         {x= 0, y=-1, z= 0},
 100         {x= 0, y=1,  z= 0},
 101 }
 102 -- Mapping from facedir value to index in facedir_to_dir.
 103 local facedir_to_dir_map = {
 104         [0]=1, 2, 3, 4,
 105         5, 2, 6, 4,
 106         6, 2, 5, 4,
 107         1, 5, 3, 6,
 108         1, 6, 3, 5,
 109         1, 4, 3, 2,
 110 }
 111 function core.facedir_to_dir(facedir)
 112         return facedir_to_dir[facedir_to_dir_map[facedir % 32]]
 113 end
 114
 115 function core.dir_to_wallmounted(dir)
 116         if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
 117                 if dir.y < 0 then
 118                         return 1
 119                 else
 120                         return 0
 121                 end
 122         elseif math.abs(dir.x) > math.abs(dir.z) then
 123                 if dir.x < 0 then
 124                         return 3
 125                 else
 126                         return 2
 127                 end
 128         else
 129                 if dir.z < 0 then
 130                         return 5
 131                 else
 132                         return 4
 133                 end
 134         end
 135 end
 136
 137 -- table of dirs in wallmounted order
 138 local wallmounted_to_dir = {
 139         [0] = {x = 0, y = 1, z = 0},
 140         {x =  0, y = -1, z =  0},
 141         {x =  1, y =  0, z =  0},
 142         {x = -1, y =  0, z =  0},
 143         {x =  0, y =  0, z =  1},
 144         {x =  0, y =  0, z = -1},
 145 }
 146 function core.wallmounted_to_dir(wallmounted)
 147         return wallmounted_to_dir[wallmounted % 8]
 148 end
 149
 150 function core.dir_to_yaw(dir)
 151         return -math.atan2(dir.x, dir.z)
 152 end
 153
 154 function core.yaw_to_dir(yaw)
 155         return {x = -math.sin(yaw), y = 0, z = math.cos(yaw)}
 156 end
 157
 158 function core.get_node_drops(node, toolname)
 159         -- Compatibility, if node is string
 160         local nodename = node
 161         local param2 = 0
 162         -- New format, if node is table
 163         if (type(node) == "table") then
 164                 nodename = node.name
 165                 param2 = node.param2
 166         end
 167         local def = core.registered_nodes[nodename]
 168         local drop = def and def.drop
 169         if drop == nil then
 170                 -- default drop
 171                 local stack = ItemStack(nodename)
 172                 if def then
 173                         local type = def.paramtype2
 174                         if (type == "color") or (type == "colorfacedir") or
 175                                         (type == "colorwallmounted") then
 176                                 local meta = stack:get_meta()
 177                                 local color_part = param2
 178                                 if (type == "colorfacedir") then
 179                                         color_part = math.floor(color_part / 32) * 32;
 180                                 elseif (type == "colorwallmounted") then
 181                                         color_part = math.floor(color_part / 8) * 8;
 182                                 end
 183                                 meta:set_int("palette_index", color_part)
 184                         end
 185                 end
 186                 return {stack:to_string()}
 187         elseif type(drop) == "string" then
 188                 -- itemstring drop
 189                 return {drop}
 190         elseif drop.items == nil then
 191                 -- drop = {} to disable default drop
 192                 return {}
 193         end
 194
 195         -- Extended drop table
 196         local got_items = {}
 197         local got_count = 0
 198         local _, item, tool
 199         for _, item in ipairs(drop.items) do
 200                 local good_rarity = true
 201                 local good_tool = true
 202                 if item.rarity ~= nil then
 203                         good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
 204                 end
 205                 if item.tools ~= nil then
 206                         good_tool = false
 207                         for _, tool in ipairs(item.tools) do
 208                                 if tool:sub(1, 1) == '~' then
 209                                         good_tool = toolname:find(tool:sub(2)) ~= nil
 210                                 else
 211                                         good_tool = toolname == tool
 212                                 end
 213                                 if good_tool then
 214                                         break
 215                                 end
 216                         end
 217                 end
 218                 if good_rarity and good_tool then
 219                         got_count = got_count + 1
 220                         for _, add_item in ipairs(item.items) do
 221                                 got_items[#got_items+1] = add_item
 222                         end
 223                         if drop.max_items ~= nil and got_count == drop.max_items then
 224                                 break
 225                         end
 226                 end
 227         end
 228         return got_items
 229 end
 230
 231 function core.item_place_node(itemstack, placer, pointed_thing, param2)
 232         local def = itemstack:get_definition()
 233         if def.type ~= "node" or pointed_thing.type ~= "node" then
 234                 return itemstack, false
 235         end
 236
 237         local under = pointed_thing.under
 238         local oldnode_under = core.get_node_or_nil(under)
 239         local above = pointed_thing.above
 240         local oldnode_above = core.get_node_or_nil(above)
 241         local playername = placer:get_player_name()
 242
 243         if not oldnode_under or not oldnode_above then
 244                 core.log("info", playername .. " tried to place"
 245                         .. " node in unloaded position " .. core.pos_to_string(above))
 246                 return itemstack, false
 247         end
 248
 249         local olddef_under = core.registered_nodes[oldnode_under.name]
 250         olddef_under = olddef_under or core.nodedef_default
 251         local olddef_above = core.registered_nodes[oldnode_above.name]
 252         olddef_above = olddef_above or core.nodedef_default
 253
 254         if not olddef_above.buildable_to and not olddef_under.buildable_to then
 255                 core.log("info", playername .. " tried to place"
 256                         .. " node in invalid position " .. core.pos_to_string(above)
 257                         .. ", replacing " .. oldnode_above.name)
 258                 return itemstack, false
 259         end
 260
 261         -- Place above pointed node
 262         local place_to = {x = above.x, y = above.y, z = above.z}
 263
 264         -- If node under is buildable_to, place into it instead (eg. snow)
 265         if olddef_under.buildable_to then
 266                 core.log("info", "node under is buildable to")
 267                 place_to = {x = under.x, y = under.y, z = under.z}
 268         end
 269
 270         if core.is_protected(place_to, playername) and
 271                         not minetest.check_player_privs(placer, "protection_bypass") then
 272                 core.log("action", playername
 273                                 .. " tried to place " .. def.name
 274                                 .. " at protected position "
 275                                 .. core.pos_to_string(place_to))
 276                 core.record_protection_violation(place_to, playername)
 277                 return itemstack
 278         end
 279
 280         core.log("action", playername .. " places node "
 281                 .. def.name .. " at " .. core.pos_to_string(place_to))
 282
 283         local oldnode = core.get_node(place_to)
 284         local newnode = {name = def.name, param1 = 0, param2 = param2 or 0}
 285
 286         -- Calculate direction for wall mounted stuff like torches and signs
 287         if def.place_param2 ~= nil then
 288                 newnode.param2 = def.place_param2
 289         elseif (def.paramtype2 == "wallmounted" or
 290                         def.paramtype2 == "colorwallmounted") and not param2 then
 291                 local dir = {
 292                         x = under.x - above.x,
 293                         y = under.y - above.y,
 294                         z = under.z - above.z
 295                 }
 296                 newnode.param2 = core.dir_to_wallmounted(dir)
 297         -- Calculate the direction for furnaces and chests and stuff
 298         elseif (def.paramtype2 == "facedir" or
 299                         def.paramtype2 == "colorfacedir") and not param2 then
 300                 local placer_pos = placer:getpos()
 301                 if placer_pos then
 302                         local dir = {
 303                                 x = above.x - placer_pos.x,
 304                                 y = above.y - placer_pos.y,
 305                                 z = above.z - placer_pos.z
 306                         }
 307                         newnode.param2 = core.dir_to_facedir(dir)
 308                         core.log("action", "facedir: " .. newnode.param2)
 309                 end
 310         end
 311
 312         local metatable = itemstack:get_meta():to_table().fields
 313
 314         -- Transfer color information
 315         if metatable.palette_index and not def.place_param2 then
 316                 local color_divisor = nil
 317                 if def.paramtype2 == "color" then
 318                         color_divisor = 1
 319                 elseif def.paramtype2 == "colorwallmounted" then
 320                         color_divisor = 8
 321                 elseif def.paramtype2 == "colorfacedir" then
 322                         color_divisor = 32
 323                 end
 324                 if color_divisor then
 325                         local color = math.floor(metatable.palette_index / color_divisor)
 326                         local other = newnode.param2 % color_divisor
 327                         newnode.param2 = color * color_divisor + other
 328                 end
 329         end
 330
 331         -- Check if the node is attached and if it can be placed there
 332         if core.get_item_group(def.name, "attached_node") ~= 0 and
 333                 not builtin_shared.check_attached_node(place_to, newnode) then
 334                 core.log("action", "attached node " .. def.name ..
 335                         " can not be placed at " .. core.pos_to_string(place_to))
 336                 return itemstack, false
 337         end
 338
 339         -- Add node and update
 340         core.add_node(place_to, newnode)
 341
 342         local take_item = true
 343
 344         -- Run callback
 345         if def.after_place_node then
 346                 -- Deepcopy place_to and pointed_thing because callback can modify it
 347                 local place_to_copy = {x=place_to.x, y=place_to.y, z=place_to.z}
 348                 local pointed_thing_copy = copy_pointed_thing(pointed_thing)
 349                 if def.after_place_node(place_to_copy, placer, itemstack,
 350                                 pointed_thing_copy) then
 351                         take_item = false
 352                 end
 353         end
 354
 355         -- Run script hook
 356         for _, callback in ipairs(core.registered_on_placenodes) do
 357                 -- Deepcopy pos, node and pointed_thing because callback can modify them
 358                 local place_to_copy = {x=place_to.x, y=place_to.y, z=place_to.z}
 359                 local newnode_copy = {name=newnode.name, param1=newnode.param1, param2=newnode.param2}
 360                 local oldnode_copy = {name=oldnode.name, param1=oldnode.param1, param2=oldnode.param2}
 361                 local pointed_thing_copy = copy_pointed_thing(pointed_thing)
 362                 if callback(place_to_copy, newnode_copy, placer, oldnode_copy, itemstack, pointed_thing_copy) then
 363                         take_item = false
 364                 end
 365         end
 366
 367         if take_item then
 368                 itemstack:take_item()
 369         end
 370         return itemstack, true
 371 end
 372
 373 function core.item_place_object(itemstack, placer, pointed_thing)
 374         local pos = core.get_pointed_thing_position(pointed_thing, true)
 375         if pos ~= nil then
 376                 local item = itemstack:take_item()
 377                 core.add_item(pos, item)
 378         end
 379         return itemstack
 380 end
 381
 382 function core.item_place(itemstack, placer, pointed_thing, param2)
 383         -- Call on_rightclick if the pointed node defines it
 384         if pointed_thing.type == "node" and placer and
 385                         not placer:get_player_control().sneak then
 386                 local n = core.get_node(pointed_thing.under)
 387                 local nn = n.name
 388                 if core.registered_nodes[nn] and core.registered_nodes[nn].on_rightclick then
 389                         return core.registered_nodes[nn].on_rightclick(pointed_thing.under, n,
 390                                         placer, itemstack, pointed_thing) or itemstack, false
 391                 end
 392         end
 393
 394         if itemstack:get_definition().type == "node" then
 395                 return core.item_place_node(itemstack, placer, pointed_thing, param2)
 396         end
 397         return itemstack
 398 end
 399
 400 function core.item_secondary_use(itemstack, placer)
 401         return itemstack
 402 end
 403
 404 function core.item_drop(itemstack, dropper, pos)
 405         if dropper and dropper:is_player() then
 406                 local v = dropper:get_look_dir()
 407                 local p = {x=pos.x, y=pos.y+1.2, z=pos.z}
 408                 local cs = itemstack:get_count()
 409                 if dropper:get_player_control().sneak then
 410                         cs = 1
 411                 end
 412                 local item = itemstack:take_item(cs)
 413                 local obj = core.add_item(p, item)
 414                 if obj then
 415                         v.x = v.x*2
 416                         v.y = v.y*2 + 2
 417                         v.z = v.z*2
 418                         obj:setvelocity(v)
 419                         obj:get_luaentity().dropped_by = dropper:get_player_name()
 420                         return itemstack
 421                 end
 422
 423         else
 424                 if core.add_item(pos, itemstack) then
 425                         return itemstack
 426                 end
 427         end
 428         -- If we reach this, adding the object to the
 429         -- environment failed
 430 end
 431
 432 function core.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)
 433         for _, callback in pairs(core.registered_on_item_eats) do
 434                 local result = callback(hp_change, replace_with_item, itemstack, user, pointed_thing)
 435                 if result then
 436                         return result
 437                 end
 438         end
 439         if itemstack:take_item() ~= nil then
 440                 user:set_hp(user:get_hp() + hp_change)
 441
 442                 if replace_with_item then
 443                         if itemstack:is_empty() then
 444                                 itemstack:add_item(replace_with_item)
 445                         else
 446                                 local inv = user:get_inventory()
 447                                 if inv:room_for_item("main", {name=replace_with_item}) then
 448                                         inv:add_item("main", replace_with_item)
 449                                 else
 450                                         local pos = user:getpos()
 451                                         pos.y = math.floor(pos.y + 0.5)
 452                                         core.add_item(pos, replace_with_item)
 453                                 end
 454                         end
 455                 end
 456         end
 457         return itemstack
 458 end
 459
 460 function core.item_eat(hp_change, replace_with_item)
 461         return function(itemstack, user, pointed_thing)  -- closure
 462                 return core.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)
 463         end
 464 end
 465
 466 function core.node_punch(pos, node, puncher, pointed_thing)
 467         -- Run script hook
 468         for _, callback in ipairs(core.registered_on_punchnodes) do
 469                 -- Copy pos and node because callback can modify them
 470                 local pos_copy = vector.new(pos)
 471                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 472                 local pointed_thing_copy = pointed_thing and copy_pointed_thing(pointed_thing) or nil
 473                 callback(pos_copy, node_copy, puncher, pointed_thing_copy)
 474         end
 475 end
 476
 477 function core.handle_node_drops(pos, drops, digger)
 478         -- Add dropped items to object's inventory
 479         if digger:get_inventory() then
 480                 local _, dropped_item
 481                 for _, dropped_item in ipairs(drops) do
 482                         local left = digger:get_inventory():add_item("main", dropped_item)
 483                         if not left:is_empty() then
 484                                 local p = {
 485                                         x = pos.x + math.random()/2-0.25,
 486                                         y = pos.y + math.random()/2-0.25,
 487                                         z = pos.z + math.random()/2-0.25,
 488                                 }
 489                                 core.add_item(p, left)
 490                         end
 491                 end
 492         end
 493 end
 494
 495 function core.node_dig(pos, node, digger)
 496         local def = core.registered_nodes[node.name]
 497         if def and (not def.diggable or
 498                         (def.can_dig and not def.can_dig(pos, digger))) then
 499                 core.log("info", digger:get_player_name() .. " tried to dig "
 500                         .. node.name .. " which is not diggable "
 501                         .. core.pos_to_string(pos))
 502                 return
 503         end
 504
 505         if core.is_protected(pos, digger:get_player_name()) and
 506                         not minetest.check_player_privs(digger, "protection_bypass") then
 507                 core.log("action", digger:get_player_name()
 508                                 .. " tried to dig " .. node.name
 509                                 .. " at protected position "
 510                                 .. core.pos_to_string(pos))
 511                 core.record_protection_violation(pos, digger:get_player_name())
 512                 return
 513         end
 514
 515         core.log('action', digger:get_player_name() .. " digs "
 516                 .. node.name .. " at " .. core.pos_to_string(pos))
 517
 518         local wielded = digger:get_wielded_item()
 519         local drops = core.get_node_drops(node, wielded:get_name())
 520
 521         local wdef = wielded:get_definition()
 522         local tp = wielded:get_tool_capabilities()
 523         local dp = core.get_dig_params(def and def.groups, tp)
 524         if wdef and wdef.after_use then
 525                 wielded = wdef.after_use(wielded, digger, node, dp) or wielded
 526         else
 527                 -- Wear out tool
 528                 if not core.settings:get_bool("creative_mode") then
 529                         wielded:add_wear(dp.wear)
 530                         if wielded:get_count() == 0 and wdef.sound and wdef.sound.breaks then
 531                                 core.sound_play(wdef.sound.breaks, {pos = pos, gain = 0.5})
 532                         end
 533                 end
 534         end
 535         digger:set_wielded_item(wielded)
 536
 537         -- Handle drops
 538         core.handle_node_drops(pos, drops, digger)
 539
 540         local oldmetadata = nil
 541         if def and def.after_dig_node then
 542                 oldmetadata = core.get_meta(pos):to_table()
 543         end
 544
 545         -- Remove node and update
 546         core.remove_node(pos)
 547
 548         -- Run callback
 549         if def and def.after_dig_node then
 550                 -- Copy pos and node because callback can modify them
 551                 local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
 552                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 553                 def.after_dig_node(pos_copy, node_copy, oldmetadata, digger)
 554         end
 555
 556         -- Run script hook
 557         local _, callback
 558         for _, callback in ipairs(core.registered_on_dignodes) do
 559                 local origin = core.callback_origins[callback]
 560                 if origin then
 561                         core.set_last_run_mod(origin.mod)
 562                         --print("Running " .. tostring(callback) ..
 563                         --      " (a " .. origin.name .. " callback in " .. origin.mod .. ")")
 564                 else
 565                         --print("No data associated with callback")
 566                 end
 567
 568                 -- Copy pos and node because callback can modify them
 569                 local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
 570                 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
 571                 callback(pos_copy, node_copy, digger)
 572         end
 573 end
 574
 575 -- This is used to allow mods to redefine core.item_place and so on
 576 -- NOTE: This is not the preferred way. Preferred way is to provide enough
 577 --       callbacks to not require redefining global functions. -celeron55
 578 local function redef_wrapper(table, name)
 579         return function(...)
 580                 return table[name](...)
 581         end
 582 end
 583
 584 --
 585 -- Item definition defaults
 586 --
 587
 588 core.nodedef_default = {
 589         -- Item properties
 590         type="node",
 591         -- name intentionally not defined here
 592         description = "",
 593         groups = {},
 594         inventory_image = "",
 595         wield_image = "",
 596         wield_scale = {x=1,y=1,z=1},
 597         stack_max = 99,
 598         usable = false,
 599         liquids_pointable = false,
 600         tool_capabilities = nil,
 601         node_placement_prediction = nil,
 602
 603         -- Interaction callbacks
 604         on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 605         on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 606         on_use = nil,
 607         can_dig = nil,
 608
 609         on_punch = redef_wrapper(core, 'node_punch'), -- core.node_punch
 610         on_rightclick = nil,
 611         on_dig = redef_wrapper(core, 'node_dig'), -- core.node_dig
 612
 613         on_receive_fields = nil,
 614
 615         on_metadata_inventory_move = core.node_metadata_inventory_move_allow_all,
 616         on_metadata_inventory_offer = core.node_metadata_inventory_offer_allow_all,
 617         on_metadata_inventory_take = core.node_metadata_inventory_take_allow_all,
 618
 619         -- Node properties
 620         drawtype = "normal",
 621         visual_scale = 1.0,
 622         -- Don't define these because otherwise the old tile_images and
 623         -- special_materials wouldn't be read
 624         --tiles ={""},
 625         --special_tiles = {
 626         --      {name="", backface_culling=true},
 627         --      {name="", backface_culling=true},
 628         --},
 629         alpha = 255,
 630         post_effect_color = {a=0, r=0, g=0, b=0},
 631         paramtype = "none",
 632         paramtype2 = "none",
 633         is_ground_content = true,
 634         sunlight_propagates = false,
 635         walkable = true,
 636         pointable = true,
 637         diggable = true,
 638         climbable = false,
 639         buildable_to = false,
 640         floodable = false,
 641         liquidtype = "none",
 642         liquid_alternative_flowing = "",
 643         liquid_alternative_source = "",
 644         liquid_viscosity = 0,
 645         drowning = 0,
 646         light_source = 0,
 647         damage_per_second = 0,
 648         selection_box = {type="regular"},
 649         legacy_facedir_simple = false,
 650         legacy_wallmounted = false,
 651 }
 652
 653 core.craftitemdef_default = {
 654         type="craft",
 655         -- name intentionally not defined here
 656         description = "",
 657         groups = {},
 658         inventory_image = "",
 659         wield_image = "",
 660         wield_scale = {x=1,y=1,z=1},
 661         stack_max = 99,
 662         liquids_pointable = false,
 663         tool_capabilities = nil,
 664
 665         -- Interaction callbacks
 666         on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 667         on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 668         on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 669         on_use = nil,
 670 }
 671
 672 core.tooldef_default = {
 673         type="tool",
 674         -- name intentionally not defined here
 675         description = "",
 676         groups = {},
 677         inventory_image = "",
 678         wield_image = "",
 679         wield_scale = {x=1,y=1,z=1},
 680         stack_max = 1,
 681         liquids_pointable = false,
 682         tool_capabilities = nil,
 683
 684         -- Interaction callbacks
 685         on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 686         on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 687         on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 688         on_use = nil,
 689 }
 690
 691 core.noneitemdef_default = {  -- This is used for the hand and unknown items
 692         type="none",
 693         -- name intentionally not defined here
 694         description = "",
 695         groups = {},
 696         inventory_image = "",
 697         wield_image = "",
 698         wield_scale = {x=1,y=1,z=1},
 699         stack_max = 99,
 700         liquids_pointable = false,
 701         tool_capabilities = nil,
 702
 703         -- Interaction callbacks
 704         on_place = redef_wrapper(core, 'item_place'),
 705         on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 706         on_drop = nil,
 707         on_use = nil,
 708 }