data/builtin.lua

   1 --
   2 -- This file contains built-in stuff in Minetest implemented in Lua.
   3 --
   4 -- It is always loaded and executed after registration of the C API,
   5 -- before loading and running any mods.
   6 --
   7
   8 function basic_dump2(o)
   9         if type(o) == "number" then
  10                 return tostring(o)
  11         elseif type(o) == "string" then
  12                 return string.format("%q", o)
  13         elseif type(o) == "boolean" then
  14                 return tostring(o)
  15         elseif type(o) == "function" then
  16                 return "<function>"
  17         elseif type(o) == "userdata" then
  18                 return "<userdata>"
  19         elseif type(o) == "nil" then
  20                 return "nil"
  21         else
  22                 error("cannot dump a " .. type(o))
  23                 return nil
  24         end
  25 end
  26
  27 function dump2(o, name, dumped)
  28         name = name or "_"
  29         dumped = dumped or {}
  30         io.write(name, " = ")
  31         if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
  32                         or type(o) == "function" or type(o) == "nil"
  33                         or type(o) == "userdata" then
  34                 io.write(basic_dump2(o), "\n")
  35         elseif type(o) == "table" then
  36                 if dumped[o] then
  37                         io.write(dumped[o], "\n")
  38                 else
  39                         dumped[o] = name
  40                         io.write("{}\n") -- new table
  41                         for k,v in pairs(o) do
  42                                 local fieldname = string.format("%s[%s]", name, basic_dump2(k))
  43                                 dump2(v, fieldname, dumped)
  44                         end
  45                 end
  46         else
  47                 error("cannot dump a " .. type(o))
  48                 return nil
  49         end
  50 end
  51
  52 function dump(o, dumped)
  53         dumped = dumped or {}
  54         if type(o) == "number" then
  55                 return tostring(o)
  56         elseif type(o) == "string" then
  57                 return string.format("%q", o)
  58         elseif type(o) == "table" then
  59                 if dumped[o] then
  60                         return "<circular reference>"
  61                 end
  62                 dumped[o] = true
  63                 local t = {}
  64                 for k,v in pairs(o) do
  65                         t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
  66                 end
  67                 return "{" .. table.concat(t, ", ") .. "}"
  68         elseif type(o) == "boolean" then
  69                 return tostring(o)
  70         elseif type(o) == "function" then
  71                 return "<function>"
  72         elseif type(o) == "userdata" then
  73                 return "<userdata>"
  74         elseif type(o) == "nil" then
  75                 return "nil"
  76         else
  77                 error("cannot dump a " .. type(o))
  78                 return nil
  79         end
  80 end
  81
  82 --
  83 -- Item definition helpers
  84 --
  85
  86 function minetest.inventorycube(img1, img2, img3)
  87         img2 = img2 or img1
  88         img3 = img3 or img1
  89         return "[inventorycube"
  90                         .. "{" .. img1:gsub("%^", "&")
  91                         .. "{" .. img2:gsub("%^", "&")
  92                         .. "{" .. img3:gsub("%^", "&")
  93 end
  94
  95 function minetest.pos_to_string(pos)
  96         return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
  97 end
  98
  99 function minetest.get_pointed_thing_position(pointed_thing, above)
 100         if pointed_thing.type == "node" then
 101                 if above then
 102                         -- The position where a node would be placed
 103                         return pointed_thing.above
 104                 else
 105                         -- The position where a node would be dug
 106                         return pointed_thing.under
 107                 end
 108         elseif pointed_thing.type == "object" then
 109                 obj = pointed_thing.ref
 110                 if obj ~= nil then
 111                         return obj:getpos()
 112                 else
 113                         return nil
 114                 end
 115         else
 116                 return nil
 117         end
 118 end
 119
 120 function minetest.dir_to_facedir(dir)
 121         if math.abs(dir.x) > math.abs(dir.z) then
 122                 if dir.x < 0 then
 123                         return 3
 124                 else
 125                         return 1
 126                 end
 127         else
 128                 if dir.z < 0 then
 129                         return 2
 130                 else
 131                         return 0
 132                 end
 133         end
 134 end
 135
 136 function minetest.dir_to_wallmounted(dir)
 137         if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
 138                 if dir.y < 0 then
 139                         return 1
 140                 else
 141                         return 0
 142                 end
 143         elseif math.abs(dir.x) > math.abs(dir.z) then
 144                 if dir.x < 0 then
 145                         return 3
 146                 else
 147                         return 2
 148                 end
 149         else
 150                 if dir.z < 0 then
 151                         return 5
 152                 else
 153                         return 4
 154                 end
 155         end
 156 end
 157
 158 function minetest.get_node_drops(nodename, toolname)
 159         local drop = ItemStack({name=nodename}):get_definition().drop
 160         if drop == nil then
 161                 -- default drop
 162                 return {ItemStack({name=nodename})}
 163         elseif type(drop) == "string" then
 164                 -- itemstring drop
 165                 return {ItemStack(drop)}
 166         elseif drop.items == nil then
 167                 -- drop = {} to disable default drop
 168                 return {}
 169         end
 170
 171         -- Extended drop table
 172         local got_items = {}
 173         local got_count = 0
 174         local _, item, tool
 175         for _, item in ipairs(drop.items) do
 176                 local good_rarity = true
 177                 local good_tool = true
 178                 if item.rarity ~= nil then
 179                         good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
 180                 end
 181                 if item.tools ~= nil then
 182                         good_tool = false
 183                         for _, tool in ipairs(item.tools) do
 184                                 if tool:sub(1, 1) == '~' then
 185                                         good_tool = toolname:find(tool:sub(2)) ~= nil
 186                                 else
 187                                         good_tool = toolname == tool
 188                                 end
 189                                 if good_tool then
 190                                         break
 191                                 end
 192                         end
 193                 end
 194                 if good_rarity and good_tool then
 195                         got_count = got_count + 1
 196                         for _, add_item in ipairs(item.items) do
 197                                 got_items[#got_items+1] = add_item
 198                         end
 199                         if drop.max_items ~= nil and got_count == drop.max_items then
 200                                 break
 201                         end
 202                 end
 203         end
 204         return got_items
 205 end
 206
 207 function minetest.item_place_node(itemstack, placer, pointed_thing)
 208         local item = itemstack:peek_item()
 209         local def = itemstack:get_definition()
 210         if def.type == "node" and pointed_thing.type == "node" then
 211                 local pos = pointed_thing.above
 212                 local oldnode = minetest.env:get_node(pos)
 213                 local olddef = ItemStack({name=oldnode.name}):get_definition()
 214
 215                 if not olddef.buildable_to then
 216                         minetest.log("info", placer:get_player_name() .. " tried to place"
 217                                 .. " node in invalid position " .. minetest.pos_to_string(pos)
 218                                 .. ", replacing " .. oldnode.name)
 219                         return
 220                 end
 221
 222                 minetest.log("action", placer:get_player_name() .. " places node "
 223                         .. def.name .. " at " .. minetest.pos_to_string(pos))
 224
 225                 local newnode = {name = def.name, param1 = 0, param2 = 0}
 226
 227                 -- Calculate direction for wall mounted stuff like torches and signs
 228                 if def.paramtype2 == 'wallmounted' then
 229                         local under = pointed_thing.under
 230                         local above = pointed_thing.above
 231                         local dir = {x = under.x - above.x, y = under.y - above.y, z = under.z - above.z}
 232                         newnode.param2 = minetest.dir_to_wallmounted(dir)
 233                 -- Calculate the direction for furnaces and chests and stuff
 234                 elseif def.paramtype2 == 'facedir' then
 235                         local playerpos = placer:getpos()
 236                         local dir = {x = pos.x - playerpos.x, y = pos.y - playerpos.y, z = pos.z - playerpos.z}
 237                         newnode.param2 = minetest.dir_to_facedir(dir)
 238                         minetest.log("action", "facedir: " .. newnode.param2)
 239                 end
 240
 241                 -- Add node and update
 242                 minetest.env:add_node(pos, newnode)
 243
 244                 -- Set metadata owner
 245                 if def.metadata_name ~= "" then
 246                         minetest.env:get_meta(pos):set_owner(placer:get_player_name())
 247                 end
 248
 249                 -- Run script hook
 250                 local _, callback
 251                 for _, callback in ipairs(minetest.registered_on_placenodes) do
 252                         callback(pos, newnode, placer)
 253                 end
 254
 255                 itemstack:take_item()
 256         end
 257         return itemstack
 258 end
 259
 260 function minetest.item_place_object(itemstack, placer, pointed_thing)
 261         local pos = minetest.get_pointed_thing_position(pointed_thing, true)
 262         if pos ~= nil then
 263                 local item = itemstack:take_item()
 264                 minetest.env:add_item(pos, item)
 265         end
 266         return itemstack
 267 end
 268
 269 function minetest.item_place(itemstack, placer, pointed_thing)
 270         if itemstack:get_definition().type == "node" then
 271                 return minetest.item_place_node(itemstack, placer, pointed_thing)
 272         else
 273                 return minetest.item_place_object(itemstack, placer, pointed_thing)
 274         end
 275 end
 276
 277 function minetest.item_drop(itemstack, dropper, pos)
 278         minetest.env:add_item(pos, itemstack)
 279         return ""
 280 end
 281
 282 function minetest.item_eat(hp_change, replace_with_item)
 283         return function(itemstack, user, pointed_thing)  -- closure
 284                 if itemstack:take_item() ~= nil then
 285                         user:set_hp(user:get_hp() + hp_change)
 286                         itemstack:add_item(replace_with_item) -- note: replace_with_item is optional
 287                 end
 288                 return itemstack
 289         end
 290 end
 291
 292 function minetest.node_punch(pos, node, puncher)
 293         -- Run script hook
 294         local _, callback
 295         for _, callback in ipairs(minetest.registered_on_punchnodes) do
 296                 callback(pos, node, puncher)
 297         end
 298
 299 end
 300
 301 function minetest.node_dig(pos, node, digger)
 302         minetest.debug("node_dig")
 303
 304         local def = ItemStack({name=node.name}):get_definition()
 305         if not def.diggable then
 306                 minetest.debug("not diggable")
 307                 minetest.log("info", digger:get_player_name() .. " tried to dig "
 308                         .. node.name .. " which is not diggable "
 309                         .. minetest.pos_to_string(pos))
 310                 return
 311         end
 312
 313         local meta = minetest.env:get_meta(pos)
 314         if meta ~= nil and not meta:get_allow_removal() then
 315                 minetest.debug("dig prevented by metadata")
 316                 minetest.log("info", digger:get_player_name() .. " tried to dig "
 317                         .. node.name .. ", but removal is disabled by metadata "
 318                         .. minetest.pos_to_string(pos))
 319                 return
 320         end
 321
 322         minetest.log('action', digger:get_player_name() .. " digs "
 323                 .. node.name .. " at " .. minetest.pos_to_string(pos))
 324
 325         if not minetest.setting_getbool("creative_mode") then
 326                 local wielded = digger:get_wielded_item()
 327                 local drops = minetest.get_node_drops(node.name, wielded:get_name())
 328
 329                 -- Wear out tool
 330                 mp = def.material
 331                 tp = wielded:get_tool_digging_properties()
 332                 dp = minetest.get_digging_properties(mp, tp)
 333                 wielded:add_wear(dp.wear)
 334                 digger:set_wielded_item(wielded)
 335
 336                 -- Add dropped items
 337                 local _, dropped_item
 338                 for _, dropped_item in ipairs(drops) do
 339                         digger:get_inventory():add_item("main", dropped_item)
 340                 end
 341         end
 342
 343         -- Remove node and update
 344         minetest.env:remove_node(pos)
 345
 346         -- Run script hook
 347         local _, callback
 348         for _, callback in ipairs(minetest.registered_on_dignodes) do
 349                 callback(pos, node, digger)
 350         end
 351 end
 352
 353 --
 354 -- Item definition defaults
 355 --
 356
 357 minetest.nodedef_default = {
 358         -- Item properties
 359         type="node",
 360         -- name intentionally not defined here
 361         description = "",
 362         groups = {},
 363         inventory_image = "",
 364         wield_image = "",
 365         wield_scale = {x=1,y=1,z=1},
 366         stack_max = 99,
 367         usable = false,
 368         liquids_pointable = false,
 369         tool_digging_properties = nil,
 370
 371         -- Interaction callbacks
 372         on_place = minetest.item_place,
 373         on_drop = minetest.item_drop,
 374         on_use = nil,
 375
 376         on_punch = minetest.node_punch,
 377         on_dig = minetest.node_dig,
 378
 379         -- Node properties
 380         drawtype = "normal",
 381         visual_scale = 1.0,
 382         tile_images = {""},
 383         special_materials = {
 384                 {image="", backface_culling=true},
 385                 {image="", backface_culling=true},
 386         },
 387         alpha = 255,
 388         post_effect_color = {a=0, r=0, g=0, b=0},
 389         paramtype = "none",
 390         paramtype2 = "none",
 391         is_ground_content = false,
 392         sunlight_propagates = false,
 393         walkable = true,
 394         pointable = true,
 395         diggable = true,
 396         climbable = false,
 397         buildable_to = false,
 398         metadata_name = "",
 399         liquidtype = "none",
 400         liquid_alternative_flowing = "",
 401         liquid_alternative_source = "",
 402         liquid_viscosity = 0,
 403         light_source = 0,
 404         damage_per_second = 0,
 405         selection_box = {type="regular"},
 406         material = {
 407                 diggablity = "normal",
 408                 weight = 0,
 409                 crackiness = 0,
 410                 crumbliness = 0,
 411                 cuttability = 0,
 412                 flammability = 0,
 413         },
 414         legacy_facedir_simple = false,
 415         legacy_wallmounted = false,
 416 }
 417
 418 minetest.craftitemdef_default = {
 419         type="craft",
 420         -- name intentionally not defined here
 421         description = "",
 422         groups = {},
 423         inventory_image = "",
 424         wield_image = "",
 425         wield_scale = {x=1,y=1,z=1},
 426         stack_max = 99,
 427         liquids_pointable = false,
 428         tool_digging_properties = nil,
 429
 430         -- Interaction callbacks
 431         on_place = minetest.item_place,
 432         on_drop = minetest.item_drop,
 433         on_use = nil,
 434 }
 435
 436 minetest.tooldef_default = {
 437         type="tool",
 438         -- name intentionally not defined here
 439         description = "",
 440         groups = {},
 441         inventory_image = "",
 442         wield_image = "",
 443         wield_scale = {x=1,y=1,z=1},
 444         stack_max = 1,
 445         liquids_pointable = false,
 446         tool_digging_properties = nil,
 447
 448         -- Interaction callbacks
 449         on_place = minetest.item_place,
 450         on_drop = minetest.item_drop,
 451         on_use = nil,
 452 }
 453
 454 minetest.noneitemdef_default = {  -- This is used for the hand and unknown items
 455         type="none",
 456         -- name intentionally not defined here
 457         description = "",
 458         groups = {},
 459         inventory_image = "",
 460         wield_image = "",
 461         wield_scale = {x=1,y=1,z=1},
 462         stack_max = 99,
 463         liquids_pointable = false,
 464         tool_digging_properties = nil,
 465
 466         -- Interaction callbacks
 467         on_place = nil,
 468         on_drop = nil,
 469         on_use = nil,
 470 }
 471
 472 --
 473 -- Make raw registration functions inaccessible to anyone except builtin.lua
 474 --
 475
 476 local register_item_raw = minetest.register_item_raw
 477 minetest.register_item_raw = nil
 478
 479 local register_alias_raw = minetest.register_alias_raw
 480 minetest.register_item_raw = nil
 481
 482 --
 483 -- Item / entity / ABM registration functions
 484 --
 485
 486 minetest.registered_abms = {}
 487 minetest.registered_entities = {}
 488 minetest.registered_items = {}
 489 minetest.registered_nodes = {}
 490 minetest.registered_craftitems = {}
 491 minetest.registered_tools = {}
 492 minetest.registered_aliases = {}
 493
 494 -- For tables that are indexed by item name:
 495 -- If table[X] does not exist, default to table[minetest.registered_aliases[X]]
 496 local function set_alias_metatable(table)
 497         setmetatable(table, {
 498                 __index = function(name)
 499                         return rawget(table, minetest.registered_aliases[name])
 500                 end
 501         })
 502 end
 503 set_alias_metatable(minetest.registered_items)
 504 set_alias_metatable(minetest.registered_nodes)
 505 set_alias_metatable(minetest.registered_craftitems)
 506 set_alias_metatable(minetest.registered_tools)
 507
 508 -- These item names may not be used because they would interfere
 509 -- with legacy itemstrings
 510 local forbidden_item_names = {
 511         MaterialItem = true,
 512         MaterialItem2 = true,
 513         MaterialItem3 = true,
 514         NodeItem = true,
 515         node = true,
 516         CraftItem = true,
 517         craft = true,
 518         MBOItem = true,
 519         ToolItem = true,
 520         tool = true,
 521 }
 522
 523 local function check_modname_prefix(name)
 524         if name:sub(1,1) == ":" then
 525                 -- Escape the modname prefix enforcement mechanism
 526                 return name:sub(2)
 527         else
 528                 -- Modname prefix enforcement
 529                 local expected_prefix = minetest.get_current_modname() .. ":"
 530                 if name:sub(1, #expected_prefix) ~= expected_prefix then
 531                         error("Name " .. name .. " does not follow naming conventions: " ..
 532                                 "\"modname:\" or \":\" prefix required")
 533                 end
 534                 local subname = name:sub(#expected_prefix+1)
 535                 if subname:find("[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]") then
 536                         error("Name " .. name .. " does not follow naming conventions: " ..
 537                                 "contains unallowed characters")
 538                 end
 539                 return name
 540         end
 541 end
 542
 543 function minetest.register_abm(spec)
 544         -- Add to minetest.registered_abms
 545         minetest.registered_abms[#minetest.registered_abms+1] = spec
 546 end
 547
 548 function minetest.register_entity(name, prototype)
 549         -- Check name
 550         if name == nil then
 551                 error("Unable to register entity: Name is nil")
 552         end
 553         name = check_modname_prefix(tostring(name))
 554
 555         prototype.name = name
 556         prototype.__index = prototype  -- so that it can be used as a metatable
 557
 558         -- Add to minetest.registered_entities
 559         minetest.registered_entities[name] = prototype
 560 end
 561
 562 function minetest.register_item(name, itemdef)
 563         -- Check name
 564         if name == nil then
 565                 error("Unable to register item: Name is nil")
 566         end
 567         name = check_modname_prefix(tostring(name))
 568         if forbidden_item_names[name] then
 569                 error("Unable to register item: Name is forbidden: " .. name)
 570         end
 571         itemdef.name = name
 572
 573         -- Apply defaults and add to registered_* table
 574         if itemdef.type == "node" then
 575                 setmetatable(itemdef, {__index = minetest.nodedef_default})
 576                 minetest.registered_nodes[itemdef.name] = itemdef
 577         elseif itemdef.type == "craft" then
 578                 setmetatable(itemdef, {__index = minetest.craftitemdef_default})
 579                 minetest.registered_craftitems[itemdef.name] = itemdef
 580         elseif itemdef.type == "tool" then
 581                 setmetatable(itemdef, {__index = minetest.tooldef_default})
 582                 minetest.registered_tools[itemdef.name] = itemdef
 583         elseif itemdef.type == "none" then
 584                 setmetatable(itemdef, {__index = minetest.noneitemdef_default})
 585         else
 586                 error("Unable to register item: Type is invalid: " .. dump(itemdef))
 587         end
 588
 589         -- Flowing liquid uses param2
 590         if itemdef.type == "node" and itemdef.liquidtype == "flowing" then
 591                 itemdef.paramtype2 = "flowingliquid"
 592         end
 593
 594         -- BEGIN Legacy stuff
 595         if itemdef.cookresult_itemstring ~= nil and itemdef.cookresult_itemstring ~= "" then
 596                 minetest.register_craft({
 597                         type="cooking",
 598                         output=itemdef.cookresult_itemstring,
 599                         recipe=itemdef.name,
 600                         cooktime=itemdef.furnace_cooktime
 601                 })
 602         end
 603         if itemdef.furnace_burntime ~= nil and itemdef.furnace_burntime >= 0 then
 604                 minetest.register_craft({
 605                         type="fuel",
 606                         recipe=itemdef.name,
 607                         burntime=itemdef.furnace_burntime
 608                 })
 609         end
 610         -- END Legacy stuff
 611
 612         -- Disable all further modifications
 613         getmetatable(itemdef).__newindex = {}
 614
 615         --minetest.log("Registering item: " .. itemdef.name)
 616         minetest.registered_items[itemdef.name] = itemdef
 617         minetest.registered_aliases[itemdef.name] = nil
 618         register_item_raw(itemdef)
 619 end
 620
 621 function minetest.register_node(name, nodedef)
 622         nodedef.type = "node"
 623         minetest.register_item(name, nodedef)
 624 end
 625
 626 function minetest.register_craftitem(name, craftitemdef)
 627         craftitemdef.type = "craft"
 628
 629         -- BEGIN Legacy stuff
 630         if craftitemdef.inventory_image == nil and craftitemdef.image ~= nil then
 631                 craftitemdef.inventory_image = craftitemdef.image
 632         end
 633         -- END Legacy stuff
 634
 635         minetest.register_item(name, craftitemdef)
 636 end
 637
 638 function minetest.register_tool(name, tooldef)
 639         tooldef.type = "tool"
 640         tooldef.stack_max = 1
 641
 642         -- BEGIN Legacy stuff
 643         if tooldef.inventory_image == nil and tooldef.image ~= nil then
 644                 tooldef.inventory_image = tooldef.image
 645         end
 646         if tooldef.tool_digging_properties == nil and
 647            (tooldef.full_punch_interval ~= nil or
 648             tooldef.basetime ~= nil or
 649             tooldef.dt_weight ~= nil or
 650             tooldef.dt_crackiness ~= nil or
 651             tooldef.dt_crumbliness ~= nil or
 652             tooldef.dt_cuttability ~= nil or
 653             tooldef.basedurability ~= nil or
 654             tooldef.dd_weight ~= nil or
 655             tooldef.dd_crackiness ~= nil or
 656             tooldef.dd_crumbliness ~= nil or
 657             tooldef.dd_cuttability ~= nil) then
 658                 tooldef.tool_digging_properties = {
 659                         full_punch_interval = tooldef.full_punch_interval,
 660                         basetime = tooldef.basetime,
 661                         dt_weight = tooldef.dt_weight,
 662                         dt_crackiness = tooldef.dt_crackiness,
 663                         dt_crumbliness = tooldef.dt_crumbliness,
 664                         dt_cuttability = tooldef.dt_cuttability,
 665                         basedurability = tooldef.basedurability,
 666                         dd_weight = tooldef.dd_weight,
 667                         dd_crackiness = tooldef.dd_crackiness,
 668                         dd_crumbliness = tooldef.dd_crumbliness,
 669                         dd_cuttability = tooldef.dd_cuttability,
 670                 }
 671         end
 672         -- END Legacy stuff
 673
 674         minetest.register_item(name, tooldef)
 675 end
 676
 677 function minetest.register_alias(name, convert_to)
 678         if forbidden_item_names[name] then
 679                 error("Unable to register alias: Name is forbidden: " .. name)
 680         end
 681         if minetest.registered_items[name] ~= nil then
 682                 minetest.log("WARNING: Not registering alias, item with same name" ..
 683                         " is already defined: " .. name .. " -> " .. convert_to)
 684         else
 685                 --minetest.log("Registering alias: " .. name .. " -> " .. convert_to)
 686                 minetest.registered_aliases[name] = convert_to
 687                 register_alias_raw(name, convert_to)
 688         end
 689 end
 690
 691 -- Alias the forbidden item names to "" so they can't be
 692 -- created via itemstrings (e.g. /give)
 693 local name
 694 for name in pairs(forbidden_item_names) do
 695         minetest.registered_aliases[name] = ""
 696         register_alias_raw(name, "")
 697 end
 698
 699
 700 -- Deprecated:
 701 -- Aliases for minetest.register_alias (how ironic...)
 702 --minetest.alias_node = minetest.register_alias
 703 --minetest.alias_tool = minetest.register_alias
 704 --minetest.alias_craftitem = minetest.register_alias
 705
 706 --
 707 -- Built-in node definitions. Also defined in C.
 708 --
 709
 710 minetest.register_item(":", {
 711         type = "none",
 712         wield_image = "wieldhand.png",
 713         wield_scale = {x=1,y=1,z=2.5},
 714         tool_digging_properties = {
 715                 full_punch_interval = 2.0,
 716                 basetime = 0.5,
 717                 dt_weight = 1,
 718                 dt_crackiness = 0,
 719                 dt_crumbliness = -1,
 720                 dt_cuttability = 0,
 721                 basedurability = 50,
 722                 dd_weight = 0,
 723                 dd_crackiness = 0,
 724                 dd_crumbliness = 0,
 725                 dd_cuttability = 0,
 726         }
 727 })
 728
 729 minetest.register_item(":unknown", {
 730         type = "none",
 731         description = "Unknown Item",
 732         inventory_image = "unknown_item.png",
 733         on_place = minetest.item_place,
 734         on_drop = minetest.item_drop,
 735 })
 736
 737 minetest.register_node(":air", {
 738         description = "Air (you hacker you!)",
 739         inventory_image = "unknown_block.png",
 740         wield_image = "unknown_block.png",
 741         drawtype = "airlike",
 742         paramtype = "light",
 743         sunlight_propagates = true,
 744         walkable = false,
 745         pointable = false,
 746         diggable = false,
 747         buildable_to = true,
 748         air_equivalent = true,
 749 })
 750
 751 minetest.register_node(":ignore", {
 752         description = "Ignore (you hacker you!)",
 753         inventory_image = "unknown_block.png",
 754         wield_image = "unknown_block.png",
 755         drawtype = "airlike",
 756         paramtype = "none",
 757         sunlight_propagates = false,
 758         walkable = false,
 759         pointable = false,
 760         diggable = false,
 761         buildable_to = true, -- A way to remove accidentally placed ignores
 762         air_equivalent = true,
 763 })
 764
 765 --
 766 -- Default material types
 767 --
 768
 769 function minetest.digprop_constanttime(time)
 770         return {
 771                 diggability = "constant",
 772                 constant_time = time,
 773         }
 774 end
 775
 776 function minetest.digprop_stonelike(toughness)
 777         return {
 778                 diggablity = "normal",
 779                 weight = toughness * 5,
 780                 crackiness = 1,
 781                 crumbliness = -0.1,
 782                 cuttability = -0.2,
 783         }
 784 end
 785
 786 function minetest.digprop_dirtlike(toughness)
 787         return {
 788                 diggablity = "normal",
 789                 weight = toughness * 1.2,
 790                 crackiness = 0,
 791                 crumbliness = 1.2,
 792                 cuttability = -0.4,
 793         }
 794 end
 795
 796 function minetest.digprop_gravellike(toughness)
 797         return {
 798                 diggablity = "normal",
 799                 weight = toughness * 2,
 800                 crackiness = 0.2,
 801                 crumbliness = 1.5,
 802                 cuttability = -1.0,
 803         }
 804 end
 805
 806 function minetest.digprop_woodlike(toughness)
 807         return {
 808                 diggablity = "normal",
 809                 weight = toughness * 1.0,
 810                 crackiness = 0.75,
 811                 crumbliness = -1.0,
 812                 cuttability = 1.5,
 813         }
 814 end
 815
 816 function minetest.digprop_leaveslike(toughness)
 817         return {
 818                 diggablity = "normal",
 819                 weight = toughness * (-0.5),
 820                 crackiness = 0,
 821                 crumbliness = 0,
 822                 cuttability = 2.0,
 823         }
 824 end
 825
 826 function minetest.digprop_glasslike(toughness)
 827         return {
 828                 diggablity = "normal",
 829                 weight = toughness * 0.1,
 830                 crackiness = 2.0,
 831                 crumbliness = -1.0,
 832                 cuttability = -1.0,
 833         }
 834 end
 835
 836 --
 837 -- Creative inventory
 838 --
 839
 840 minetest.creative_inventory = {}
 841
 842 minetest.add_to_creative_inventory = function(itemstring)
 843         table.insert(minetest.creative_inventory, itemstring)
 844 end
 845
 846 --
 847 -- Callback registration
 848 --
 849
 850 local function make_registration()
 851         local t = {}
 852         local registerfunc = function(func) table.insert(t, func) end
 853         return t, registerfunc
 854 end
 855
 856 minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
 857 minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
 858 minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
 859 minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
 860 minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
 861 minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
 862 minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
 863 minetest.registered_on_dieplayers, minetest.register_on_dieplayer = make_registration()
 864 minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
 865
 866 --
 867 -- Set random seed
 868 --
 869
 870 math.randomseed(os.time())
 871
 872 -- END