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                 tp = wielded:get_tool_capabilities()
 331                 dp = minetest.get_dig_params(def.groups, tp)
 332                 wielded:add_wear(dp.wear)
 333                 digger:set_wielded_item(wielded)
 334
 335                 -- Add dropped items
 336                 local _, dropped_item
 337                 for _, dropped_item in ipairs(drops) do
 338                         digger:get_inventory():add_item("main", dropped_item)
 339                 end
 340         end
 341
 342         -- Remove node and update
 343         minetest.env:remove_node(pos)
 344
 345         -- Run script hook
 346         local _, callback
 347         for _, callback in ipairs(minetest.registered_on_dignodes) do
 348                 callback(pos, node, digger)
 349         end
 350 end
 351
 352 --
 353 -- Item definition defaults
 354 --
 355
 356 minetest.nodedef_default = {
 357         -- Item properties
 358         type="node",
 359         -- name intentionally not defined here
 360         description = "",
 361         groups = {},
 362         inventory_image = "",
 363         wield_image = "",
 364         wield_scale = {x=1,y=1,z=1},
 365         stack_max = 99,
 366         usable = false,
 367         liquids_pointable = false,
 368         tool_capabilities = nil,
 369
 370         -- Interaction callbacks
 371         on_place = minetest.item_place,
 372         on_drop = minetest.item_drop,
 373         on_use = nil,
 374
 375         on_punch = minetest.node_punch,
 376         on_dig = minetest.node_dig,
 377
 378         -- Node properties
 379         drawtype = "normal",
 380         visual_scale = 1.0,
 381         tile_images = {""},
 382         special_materials = {
 383                 {image="", backface_culling=true},
 384                 {image="", backface_culling=true},
 385         },
 386         alpha = 255,
 387         post_effect_color = {a=0, r=0, g=0, b=0},
 388         paramtype = "none",
 389         paramtype2 = "none",
 390         is_ground_content = false,
 391         sunlight_propagates = false,
 392         walkable = true,
 393         pointable = true,
 394         diggable = true,
 395         climbable = false,
 396         buildable_to = false,
 397         metadata_name = "",
 398         liquidtype = "none",
 399         liquid_alternative_flowing = "",
 400         liquid_alternative_source = "",
 401         liquid_viscosity = 0,
 402         light_source = 0,
 403         damage_per_second = 0,
 404         selection_box = {type="regular"},
 405         material = {
 406                 diggablity = "normal",
 407                 weight = 0,
 408                 crackiness = 0,
 409                 crumbliness = 0,
 410                 cuttability = 0,
 411                 flammability = 0,
 412         },
 413         legacy_facedir_simple = false,
 414         legacy_wallmounted = false,
 415 }
 416
 417 minetest.craftitemdef_default = {
 418         type="craft",
 419         -- name intentionally not defined here
 420         description = "",
 421         groups = {},
 422         inventory_image = "",
 423         wield_image = "",
 424         wield_scale = {x=1,y=1,z=1},
 425         stack_max = 99,
 426         liquids_pointable = false,
 427         tool_capabilities = nil,
 428
 429         -- Interaction callbacks
 430         on_place = minetest.item_place,
 431         on_drop = minetest.item_drop,
 432         on_use = nil,
 433 }
 434
 435 minetest.tooldef_default = {
 436         type="tool",
 437         -- name intentionally not defined here
 438         description = "",
 439         groups = {},
 440         inventory_image = "",
 441         wield_image = "",
 442         wield_scale = {x=1,y=1,z=1},
 443         stack_max = 1,
 444         liquids_pointable = false,
 445         tool_capabilities = nil,
 446
 447         -- Interaction callbacks
 448         on_place = minetest.item_place,
 449         on_drop = minetest.item_drop,
 450         on_use = nil,
 451 }
 452
 453 minetest.noneitemdef_default = {  -- This is used for the hand and unknown items
 454         type="none",
 455         -- name intentionally not defined here
 456         description = "",
 457         groups = {},
 458         inventory_image = "",
 459         wield_image = "",
 460         wield_scale = {x=1,y=1,z=1},
 461         stack_max = 99,
 462         liquids_pointable = false,
 463         tool_capabilities = nil,
 464
 465         -- Interaction callbacks
 466         on_place = nil,
 467         on_drop = nil,
 468         on_use = nil,
 469 }
 470
 471 --
 472 -- Make raw registration functions inaccessible to anyone except builtin.lua
 473 --
 474
 475 local register_item_raw = minetest.register_item_raw
 476 minetest.register_item_raw = nil
 477
 478 local register_alias_raw = minetest.register_alias_raw
 479 minetest.register_item_raw = nil
 480
 481 --
 482 -- Item / entity / ABM registration functions
 483 --
 484
 485 minetest.registered_abms = {}
 486 minetest.registered_entities = {}
 487 minetest.registered_items = {}
 488 minetest.registered_nodes = {}
 489 minetest.registered_craftitems = {}
 490 minetest.registered_tools = {}
 491 minetest.registered_aliases = {}
 492
 493 -- For tables that are indexed by item name:
 494 -- If table[X] does not exist, default to table[minetest.registered_aliases[X]]
 495 local function set_alias_metatable(table)
 496         setmetatable(table, {
 497                 __index = function(name)
 498                         return rawget(table, minetest.registered_aliases[name])
 499                 end
 500         })
 501 end
 502 set_alias_metatable(minetest.registered_items)
 503 set_alias_metatable(minetest.registered_nodes)
 504 set_alias_metatable(minetest.registered_craftitems)
 505 set_alias_metatable(minetest.registered_tools)
 506
 507 -- These item names may not be used because they would interfere
 508 -- with legacy itemstrings
 509 local forbidden_item_names = {
 510         MaterialItem = true,
 511         MaterialItem2 = true,
 512         MaterialItem3 = true,
 513         NodeItem = true,
 514         node = true,
 515         CraftItem = true,
 516         craft = true,
 517         MBOItem = true,
 518         ToolItem = true,
 519         tool = true,
 520 }
 521
 522 local function check_modname_prefix(name)
 523         if name:sub(1,1) == ":" then
 524                 -- Escape the modname prefix enforcement mechanism
 525                 return name:sub(2)
 526         else
 527                 -- Modname prefix enforcement
 528                 local expected_prefix = minetest.get_current_modname() .. ":"
 529                 if name:sub(1, #expected_prefix) ~= expected_prefix then
 530                         error("Name " .. name .. " does not follow naming conventions: " ..
 531                                 "\"modname:\" or \":\" prefix required")
 532                 end
 533                 local subname = name:sub(#expected_prefix+1)
 534                 if subname:find("[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]") then
 535                         error("Name " .. name .. " does not follow naming conventions: " ..
 536                                 "contains unallowed characters")
 537                 end
 538                 return name
 539         end
 540 end
 541
 542 function minetest.register_abm(spec)
 543         -- Add to minetest.registered_abms
 544         minetest.registered_abms[#minetest.registered_abms+1] = spec
 545 end
 546
 547 function minetest.register_entity(name, prototype)
 548         -- Check name
 549         if name == nil then
 550                 error("Unable to register entity: Name is nil")
 551         end
 552         name = check_modname_prefix(tostring(name))
 553
 554         prototype.name = name
 555         prototype.__index = prototype  -- so that it can be used as a metatable
 556
 557         -- Add to minetest.registered_entities
 558         minetest.registered_entities[name] = prototype
 559 end
 560
 561 function minetest.register_item(name, itemdef)
 562         -- Check name
 563         if name == nil then
 564                 error("Unable to register item: Name is nil")
 565         end
 566         name = check_modname_prefix(tostring(name))
 567         if forbidden_item_names[name] then
 568                 error("Unable to register item: Name is forbidden: " .. name)
 569         end
 570         itemdef.name = name
 571
 572         -- Apply defaults and add to registered_* table
 573         if itemdef.type == "node" then
 574                 setmetatable(itemdef, {__index = minetest.nodedef_default})
 575                 minetest.registered_nodes[itemdef.name] = itemdef
 576         elseif itemdef.type == "craft" then
 577                 setmetatable(itemdef, {__index = minetest.craftitemdef_default})
 578                 minetest.registered_craftitems[itemdef.name] = itemdef
 579         elseif itemdef.type == "tool" then
 580                 setmetatable(itemdef, {__index = minetest.tooldef_default})
 581                 minetest.registered_tools[itemdef.name] = itemdef
 582         elseif itemdef.type == "none" then
 583                 setmetatable(itemdef, {__index = minetest.noneitemdef_default})
 584         else
 585                 error("Unable to register item: Type is invalid: " .. dump(itemdef))
 586         end
 587
 588         -- Flowing liquid uses param2
 589         if itemdef.type == "node" and itemdef.liquidtype == "flowing" then
 590                 itemdef.paramtype2 = "flowingliquid"
 591         end
 592
 593         -- BEGIN Legacy stuff
 594         if itemdef.cookresult_itemstring ~= nil and itemdef.cookresult_itemstring ~= "" then
 595                 minetest.register_craft({
 596                         type="cooking",
 597                         output=itemdef.cookresult_itemstring,
 598                         recipe=itemdef.name,
 599                         cooktime=itemdef.furnace_cooktime
 600                 })
 601         end
 602         if itemdef.furnace_burntime ~= nil and itemdef.furnace_burntime >= 0 then
 603                 minetest.register_craft({
 604                         type="fuel",
 605                         recipe=itemdef.name,
 606                         burntime=itemdef.furnace_burntime
 607                 })
 608         end
 609         -- END Legacy stuff
 610
 611         -- Disable all further modifications
 612         getmetatable(itemdef).__newindex = {}
 613
 614         --minetest.log("Registering item: " .. itemdef.name)
 615         minetest.registered_items[itemdef.name] = itemdef
 616         minetest.registered_aliases[itemdef.name] = nil
 617         register_item_raw(itemdef)
 618 end
 619
 620 function minetest.register_node(name, nodedef)
 621         nodedef.type = "node"
 622         minetest.register_item(name, nodedef)
 623 end
 624
 625 function minetest.register_craftitem(name, craftitemdef)
 626         craftitemdef.type = "craft"
 627
 628         -- BEGIN Legacy stuff
 629         if craftitemdef.inventory_image == nil and craftitemdef.image ~= nil then
 630                 craftitemdef.inventory_image = craftitemdef.image
 631         end
 632         -- END Legacy stuff
 633
 634         minetest.register_item(name, craftitemdef)
 635 end
 636
 637 function minetest.register_tool(name, tooldef)
 638         tooldef.type = "tool"
 639         tooldef.stack_max = 1
 640
 641         -- BEGIN Legacy stuff
 642         if tooldef.inventory_image == nil and tooldef.image ~= nil then
 643                 tooldef.inventory_image = tooldef.image
 644         end
 645         if tooldef.tool_capabilities == nil and
 646            (tooldef.full_punch_interval ~= nil or
 647             tooldef.basetime ~= nil or
 648             tooldef.dt_weight ~= nil or
 649             tooldef.dt_crackiness ~= nil or
 650             tooldef.dt_crumbliness ~= nil or
 651             tooldef.dt_cuttability ~= nil or
 652             tooldef.basedurability ~= nil or
 653             tooldef.dd_weight ~= nil or
 654             tooldef.dd_crackiness ~= nil or
 655             tooldef.dd_crumbliness ~= nil or
 656             tooldef.dd_cuttability ~= nil) then
 657                 tooldef.tool_capabilities = {
 658                         full_punch_interval = tooldef.full_punch_interval,
 659                         basetime = tooldef.basetime,
 660                         dt_weight = tooldef.dt_weight,
 661                         dt_crackiness = tooldef.dt_crackiness,
 662                         dt_crumbliness = tooldef.dt_crumbliness,
 663                         dt_cuttability = tooldef.dt_cuttability,
 664                         basedurability = tooldef.basedurability,
 665                         dd_weight = tooldef.dd_weight,
 666                         dd_crackiness = tooldef.dd_crackiness,
 667                         dd_crumbliness = tooldef.dd_crumbliness,
 668                         dd_cuttability = tooldef.dd_cuttability,
 669                 }
 670         end
 671         -- END Legacy stuff
 672
 673         minetest.register_item(name, tooldef)
 674 end
 675
 676 function minetest.register_alias(name, convert_to)
 677         if forbidden_item_names[name] then
 678                 error("Unable to register alias: Name is forbidden: " .. name)
 679         end
 680         if minetest.registered_items[name] ~= nil then
 681                 minetest.log("WARNING: Not registering alias, item with same name" ..
 682                         " is already defined: " .. name .. " -> " .. convert_to)
 683         else
 684                 --minetest.log("Registering alias: " .. name .. " -> " .. convert_to)
 685                 minetest.registered_aliases[name] = convert_to
 686                 register_alias_raw(name, convert_to)
 687         end
 688 end
 689
 690 -- Alias the forbidden item names to "" so they can't be
 691 -- created via itemstrings (e.g. /give)
 692 local name
 693 for name in pairs(forbidden_item_names) do
 694         minetest.registered_aliases[name] = ""
 695         register_alias_raw(name, "")
 696 end
 697
 698
 699 -- Deprecated:
 700 -- Aliases for minetest.register_alias (how ironic...)
 701 --minetest.alias_node = minetest.register_alias
 702 --minetest.alias_tool = minetest.register_alias
 703 --minetest.alias_craftitem = minetest.register_alias
 704
 705 --
 706 -- Built-in node definitions. Also defined in C.
 707 --
 708
 709 minetest.register_item(":", {
 710         type = "none",
 711         wield_image = "wieldhand.png",
 712         wield_scale = {x=1,y=1,z=2.5},
 713         tool_capabilities = {
 714                 full_punch_interval = 2.0,
 715                 max_drop_level = 0,
 716                 groupcaps = {
 717                         fleshy = {times={[2]=2.00, [3]=1.00}, maxwear=0, maxlevel=1},
 718                         crumbly = {times={[3]=0.70}, maxwear=0, maxlevel=1},
 719                         snappy = {times={[3]=0.70}, maxwear=0, maxlevel=1},
 720                 }
 721         }
 722 })
 723
 724 minetest.register_item(":unknown", {
 725         type = "none",
 726         description = "Unknown Item",
 727         inventory_image = "unknown_item.png",
 728         on_place = minetest.item_place,
 729         on_drop = minetest.item_drop,
 730 })
 731
 732 minetest.register_node(":air", {
 733         description = "Air (you hacker you!)",
 734         inventory_image = "unknown_block.png",
 735         wield_image = "unknown_block.png",
 736         drawtype = "airlike",
 737         paramtype = "light",
 738         sunlight_propagates = true,
 739         walkable = false,
 740         pointable = false,
 741         diggable = false,
 742         buildable_to = true,
 743         air_equivalent = true,
 744 })
 745
 746 minetest.register_node(":ignore", {
 747         description = "Ignore (you hacker you!)",
 748         inventory_image = "unknown_block.png",
 749         wield_image = "unknown_block.png",
 750         drawtype = "airlike",
 751         paramtype = "none",
 752         sunlight_propagates = false,
 753         walkable = false,
 754         pointable = false,
 755         diggable = false,
 756         buildable_to = true, -- A way to remove accidentally placed ignores
 757         air_equivalent = true,
 758 })
 759
 760 --
 761 -- Default material types
 762 --
 763
 764 function minetest.digprop_constanttime(time)
 765         return {
 766                 diggability = "constant",
 767                 constant_time = time,
 768         }
 769 end
 770
 771 function minetest.digprop_stonelike(toughness)
 772         return {
 773                 diggablity = "normal",
 774                 weight = toughness * 5,
 775                 crackiness = 1,
 776                 crumbliness = -0.1,
 777                 cuttability = -0.2,
 778         }
 779 end
 780
 781 function minetest.digprop_dirtlike(toughness)
 782         return {
 783                 diggablity = "normal",
 784                 weight = toughness * 1.2,
 785                 crackiness = 0,
 786                 crumbliness = 1.2,
 787                 cuttability = -0.4,
 788         }
 789 end
 790
 791 function minetest.digprop_gravellike(toughness)
 792         return {
 793                 diggablity = "normal",
 794                 weight = toughness * 2,
 795                 crackiness = 0.2,
 796                 crumbliness = 1.5,
 797                 cuttability = -1.0,
 798         }
 799 end
 800
 801 function minetest.digprop_woodlike(toughness)
 802         return {
 803                 diggablity = "normal",
 804                 weight = toughness * 1.0,
 805                 crackiness = 0.75,
 806                 crumbliness = -1.0,
 807                 cuttability = 1.5,
 808         }
 809 end
 810
 811 function minetest.digprop_leaveslike(toughness)
 812         return {
 813                 diggablity = "normal",
 814                 weight = toughness * (-0.5),
 815                 crackiness = 0,
 816                 crumbliness = 0,
 817                 cuttability = 2.0,
 818         }
 819 end
 820
 821 function minetest.digprop_glasslike(toughness)
 822         return {
 823                 diggablity = "normal",
 824                 weight = toughness * 0.1,
 825                 crackiness = 2.0,
 826                 crumbliness = -1.0,
 827                 cuttability = -1.0,
 828         }
 829 end
 830
 831 --
 832 -- Creative inventory
 833 --
 834
 835 minetest.creative_inventory = {}
 836
 837 minetest.add_to_creative_inventory = function(itemstring)
 838         table.insert(minetest.creative_inventory, itemstring)
 839 end
 840
 841 --
 842 -- Callback registration
 843 --
 844
 845 local function make_registration()
 846         local t = {}
 847         local registerfunc = function(func) table.insert(t, func) end
 848         return t, registerfunc
 849 end
 850
 851 minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
 852 minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
 853 minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
 854 minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
 855 minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
 856 minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
 857 minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
 858 minetest.registered_on_dieplayers, minetest.register_on_dieplayer = make_registration()
 859 minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
 860
 861 --
 862 -- Set random seed
 863 --
 864
 865 math.randomseed(os.time())
 866
 867 -- END