1 -- Minetest: builtin/item.lua
4 -- Item definition helpers
7 function minetest.inventorycube(img1, img2, img3)
10 return "[inventorycube"
11 .. "{" .. img1:gsub("%^", "&")
12 .. "{" .. img2:gsub("%^", "&")
13 .. "{" .. img3:gsub("%^", "&")
16 function minetest.get_pointed_thing_position(pointed_thing, above)
17 if pointed_thing.type == "node" then
19 -- The position where a node would be placed
20 return pointed_thing.above
22 -- The position where a node would be dug
23 return pointed_thing.under
25 elseif pointed_thing.type == "object" then
26 obj = pointed_thing.ref
37 function minetest.dir_to_facedir(dir, is6d)
38 --account for y if requested
39 if is6d and math.abs(dir.y) > math.abs(dir.x) and math.abs(dir.y) > math.abs(dir.z) then
43 if math.abs(dir.x) > math.abs(dir.z) then
59 if math.abs(dir.x) > math.abs(dir.z) then
74 --otherwise, place horizontally
75 elseif math.abs(dir.x) > math.abs(dir.z) then
90 function minetest.facedir_to_dir(facedir)
91 --a table of possible dirs
92 return ({{x=0, y=0, z=1},
99 --indexed into by a table of correlating facedirs
107 --indexed into by the facedir in question
111 function minetest.dir_to_wallmounted(dir)
112 if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
118 elseif math.abs(dir.x) > math.abs(dir.z) then
133 function minetest.get_node_drops(nodename, toolname)
134 local drop = ItemStack({name=nodename}):get_definition().drop
138 elseif type(drop) == "string" then
141 elseif drop.items == nil then
142 -- drop = {} to disable default drop
146 -- Extended drop table
150 for _, item in ipairs(drop.items) do
151 local good_rarity = true
152 local good_tool = true
153 if item.rarity ~= nil then
154 good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
156 if item.tools ~= nil then
158 for _, tool in ipairs(item.tools) do
159 if tool:sub(1, 1) == '~' then
160 good_tool = toolname:find(tool:sub(2)) ~= nil
162 good_tool = toolname == tool
169 if good_rarity and good_tool then
170 got_count = got_count + 1
171 for _, add_item in ipairs(item.items) do
172 got_items[#got_items+1] = add_item
174 if drop.max_items ~= nil and got_count == drop.max_items then
182 function minetest.item_place_node(itemstack, placer, pointed_thing, param2)
183 local item = itemstack:peek_item()
184 local def = itemstack:get_definition()
185 if def.type ~= "node" or pointed_thing.type ~= "node" then
186 return itemstack, false
189 local under = pointed_thing.under
190 local oldnode_under = minetest.get_node_or_nil(under)
191 local above = pointed_thing.above
192 local oldnode_above = minetest.get_node_or_nil(above)
194 if not oldnode_under or not oldnode_above then
195 minetest.log("info", placer:get_player_name() .. " tried to place"
196 .. " node in unloaded position " .. minetest.pos_to_string(above))
197 return itemstack, false
200 local olddef_under = ItemStack({name=oldnode_under.name}):get_definition()
201 olddef_under = olddef_under or minetest.nodedef_default
202 local olddef_above = ItemStack({name=oldnode_above.name}):get_definition()
203 olddef_above = olddef_above or minetest.nodedef_default
205 if not olddef_above.buildable_to and not olddef_under.buildable_to then
206 minetest.log("info", placer:get_player_name() .. " tried to place"
207 .. " node in invalid position " .. minetest.pos_to_string(above)
208 .. ", replacing " .. oldnode_above.name)
209 return itemstack, false
212 -- Place above pointed node
213 local place_to = {x = above.x, y = above.y, z = above.z}
215 -- If node under is buildable_to, place into it instead (eg. snow)
216 if olddef_under.buildable_to then
217 minetest.log("info", "node under is buildable to")
218 place_to = {x = under.x, y = under.y, z = under.z}
221 if minetest.is_protected(place_to, placer:get_player_name()) then
222 minetest.log("action", placer:get_player_name()
223 .. " tried to place " .. def.name
224 .. " at protected position "
225 .. minetest.pos_to_string(place_to))
226 minetest.record_protection_violation(place_to, placer:get_player_name())
230 minetest.log("action", placer:get_player_name() .. " places node "
231 .. def.name .. " at " .. minetest.pos_to_string(place_to))
233 local oldnode = minetest.get_node(place_to)
234 local newnode = {name = def.name, param1 = 0, param2 = param2}
236 -- Calculate direction for wall mounted stuff like torches and signs
237 if def.paramtype2 == 'wallmounted' and not param2 then
239 x = under.x - above.x,
240 y = under.y - above.y,
241 z = under.z - above.z
243 newnode.param2 = minetest.dir_to_wallmounted(dir)
244 -- Calculate the direction for furnaces and chests and stuff
245 elseif def.paramtype2 == 'facedir' and not param2 then
246 local placer_pos = placer:getpos()
249 x = above.x - placer_pos.x,
250 y = above.y - placer_pos.y,
251 z = above.z - placer_pos.z
253 newnode.param2 = minetest.dir_to_facedir(dir)
254 minetest.log("action", "facedir: " .. newnode.param2)
258 -- Check if the node is attached and if it can be placed there
259 if minetest.get_item_group(def.name, "attached_node") ~= 0 and
260 not check_attached_node(place_to, newnode) then
261 minetest.log("action", "attached node " .. def.name ..
262 " can not be placed at " .. minetest.pos_to_string(place_to))
263 return itemstack, false
266 -- Add node and update
267 minetest.add_node(place_to, newnode)
269 local take_item = true
272 if def.after_place_node then
273 -- Deepcopy place_to and pointed_thing because callback can modify it
274 local place_to_copy = {x=place_to.x, y=place_to.y, z=place_to.z}
275 local pointed_thing_copy = {
276 type = pointed_thing.type,
278 x = pointed_thing.under.x,
279 y = pointed_thing.under.y,
280 z = pointed_thing.under.z},
282 x = pointed_thing.above.x,
283 y = pointed_thing.above.y,
284 z = pointed_thing.above.z}
286 if def.after_place_node(place_to_copy, placer, itemstack,
287 pointed_thing_copy) then
294 for _, callback in ipairs(minetest.registered_on_placenodes) do
295 -- Deepcopy pos, node and poined_thing because callback can modify them
296 local place_to_copy = {x=place_to.x, y=place_to.y, z=place_to.z}
297 local newnode_copy = {name=newnode.name, param1=newnode.param1, param2=newnode.param2}
298 local oldnode_copy = {name=oldnode.name, param1=oldnode.param1, param2=oldnode.param2}
299 local pointed_thing_copy = {
300 type = pointed_thing.type,
302 x = pointed_thing.under.x,
303 y = pointed_thing.under.y,
304 z = pointed_thing.under.z},
306 x = pointed_thing.above.x,
307 y = pointed_thing.above.y,
308 z = pointed_thing.above.z}
310 if callback(place_to_copy, newnode_copy, placer, oldnode_copy, itemstack, poined_thing_copy) then
316 itemstack:take_item()
318 return itemstack, true
321 function minetest.item_place_object(itemstack, placer, pointed_thing)
322 local pos = minetest.get_pointed_thing_position(pointed_thing, true)
324 local item = itemstack:take_item()
325 minetest.add_item(pos, item)
330 function minetest.item_place(itemstack, placer, pointed_thing, param2)
331 -- Call on_rightclick if the pointed node defines it
332 if pointed_thing.type == "node" and placer and
333 not placer:get_player_control().sneak then
334 local n = minetest.get_node(pointed_thing.under)
336 if minetest.registered_nodes[nn] and minetest.registered_nodes[nn].on_rightclick then
337 return minetest.registered_nodes[nn].on_rightclick(pointed_thing.under, n,
338 placer, itemstack, pointed_thing) or itemstack, false
342 if itemstack:get_definition().type == "node" then
343 return minetest.item_place_node(itemstack, placer, pointed_thing, param2)
348 function minetest.item_drop(itemstack, dropper, pos)
349 if dropper.get_player_name then
350 local v = dropper:get_look_dir()
351 local p = {x=pos.x+v.x, y=pos.y+1.5+v.y, z=pos.z+v.z}
352 local obj = minetest.add_item(p, itemstack)
360 minetest.add_item(pos, itemstack)
365 function minetest.item_eat(hp_change, replace_with_item)
366 return function(itemstack, user, pointed_thing) -- closure
367 if itemstack:take_item() ~= nil then
368 user:set_hp(user:get_hp() + hp_change)
369 itemstack:add_item(replace_with_item) -- note: replace_with_item is optional
375 function minetest.node_punch(pos, node, puncher)
378 for _, callback in ipairs(minetest.registered_on_punchnodes) do
379 -- Copy pos and node because callback can modify them
380 local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
381 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
382 callback(pos_copy, node_copy, puncher)
386 function minetest.handle_node_drops(pos, drops, digger)
387 -- Add dropped items to object's inventory
388 if digger:get_inventory() then
389 local _, dropped_item
390 for _, dropped_item in ipairs(drops) do
391 local left = digger:get_inventory():add_item("main", dropped_item)
392 if not left:is_empty() then
394 x = pos.x + math.random()/2-0.25,
395 y = pos.y + math.random()/2-0.25,
396 z = pos.z + math.random()/2-0.25,
398 minetest.add_item(p, left)
404 function minetest.node_dig(pos, node, digger)
405 local def = ItemStack({name=node.name}):get_definition()
406 if not def.diggable or (def.can_dig and not def.can_dig(pos,digger)) then
407 minetest.log("info", digger:get_player_name() .. " tried to dig "
408 .. node.name .. " which is not diggable "
409 .. minetest.pos_to_string(pos))
413 if minetest.is_protected(pos, digger:get_player_name()) then
414 minetest.log("action", digger:get_player_name()
415 .. " tried to dig " .. node.name
416 .. " at protected position "
417 .. minetest.pos_to_string(pos))
418 minetest.record_protection_violation(pos, digger:get_player_name())
422 minetest.log('action', digger:get_player_name() .. " digs "
423 .. node.name .. " at " .. minetest.pos_to_string(pos))
425 local wielded = digger:get_wielded_item()
426 local drops = minetest.get_node_drops(node.name, wielded:get_name())
428 local wdef = wielded:get_definition()
429 local tp = wielded:get_tool_capabilities()
430 local dp = minetest.get_dig_params(def.groups, tp)
431 if wdef and wdef.after_use then
432 wielded = wdef.after_use(wielded, digger, node, dp) or wielded
435 if not minetest.setting_getbool("creative_mode") then
436 wielded:add_wear(dp.wear)
439 digger:set_wielded_item(wielded)
442 minetest.handle_node_drops(pos, drops, digger)
444 local oldmetadata = nil
445 if def.after_dig_node then
446 oldmetadata = minetest.get_meta(pos):to_table()
449 -- Remove node and update
450 minetest.remove_node(pos)
453 if def.after_dig_node then
454 -- Copy pos and node because callback can modify them
455 local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
456 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
457 def.after_dig_node(pos_copy, node_copy, oldmetadata, digger)
462 for _, callback in ipairs(minetest.registered_on_dignodes) do
463 -- Copy pos and node because callback can modify them
464 local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
465 local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
466 callback(pos_copy, node_copy, digger)
470 -- This is used to allow mods to redefine minetest.item_place and so on
471 -- NOTE: This is not the preferred way. Preferred way is to provide enough
472 -- callbacks to not require redefining global functions. -celeron55
473 local function redef_wrapper(table, name)
475 return table[name](...)
480 -- Item definition defaults
483 minetest.nodedef_default = {
486 -- name intentionally not defined here
489 inventory_image = "",
491 wield_scale = {x=1,y=1,z=1},
494 liquids_pointable = false,
495 tool_capabilities = nil,
496 node_placement_prediction = nil,
498 -- Interaction callbacks
499 on_place = redef_wrapper(minetest, 'item_place'), -- minetest.item_place
500 on_drop = redef_wrapper(minetest, 'item_drop'), -- minetest.item_drop
504 on_punch = redef_wrapper(minetest, 'node_punch'), -- minetest.node_punch
506 on_dig = redef_wrapper(minetest, 'node_dig'), -- minetest.node_dig
508 on_receive_fields = nil,
510 on_metadata_inventory_move = minetest.node_metadata_inventory_move_allow_all,
511 on_metadata_inventory_offer = minetest.node_metadata_inventory_offer_allow_all,
512 on_metadata_inventory_take = minetest.node_metadata_inventory_take_allow_all,
517 -- Don't define these because otherwise the old tile_images and
518 -- special_materials wouldn't be read
521 -- {name="", backface_culling=true},
522 -- {name="", backface_culling=true},
525 post_effect_color = {a=0, r=0, g=0, b=0},
528 is_ground_content = true,
529 sunlight_propagates = false,
534 buildable_to = false,
536 liquid_alternative_flowing = "",
537 liquid_alternative_source = "",
538 liquid_viscosity = 0,
541 damage_per_second = 0,
542 selection_box = {type="regular"},
543 legacy_facedir_simple = false,
544 legacy_wallmounted = false,
547 minetest.craftitemdef_default = {
549 -- name intentionally not defined here
552 inventory_image = "",
554 wield_scale = {x=1,y=1,z=1},
556 liquids_pointable = false,
557 tool_capabilities = nil,
559 -- Interaction callbacks
560 on_place = redef_wrapper(minetest, 'item_place'), -- minetest.item_place
561 on_drop = redef_wrapper(minetest, 'item_drop'), -- minetest.item_drop
565 minetest.tooldef_default = {
567 -- name intentionally not defined here
570 inventory_image = "",
572 wield_scale = {x=1,y=1,z=1},
574 liquids_pointable = false,
575 tool_capabilities = nil,
577 -- Interaction callbacks
578 on_place = redef_wrapper(minetest, 'item_place'), -- minetest.item_place
579 on_drop = redef_wrapper(minetest, 'item_drop'), -- minetest.item_drop
583 minetest.noneitemdef_default = { -- This is used for the hand and unknown items
585 -- name intentionally not defined here
588 inventory_image = "",
590 wield_scale = {x=1,y=1,z=1},
592 liquids_pointable = false,
593 tool_capabilities = nil,
595 -- Interaction callbacks
596 on_place = redef_wrapper(minetest, 'item_place'),