diff options
Diffstat (limited to 'builtin/item.lua')
| -rw-r--r-- | builtin/item.lua | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/builtin/item.lua b/builtin/item.lua new file mode 100644 index 000000000..3abf30a6d --- /dev/null +++ b/builtin/item.lua @@ -0,0 +1,380 @@ +-- Minetest: builtin/item.lua + +-- +-- Item definition helpers +-- + +function minetest.inventorycube(img1, img2, img3) + img2 = img2 or img1 + img3 = img3 or img1 + return "[inventorycube" + .. "{" .. img1:gsub("%^", "&") + .. "{" .. img2:gsub("%^", "&") + .. "{" .. img3:gsub("%^", "&") +end + +function minetest.get_pointed_thing_position(pointed_thing, above) + if pointed_thing.type == "node" then + if above then + -- The position where a node would be placed + return pointed_thing.above + else + -- The position where a node would be dug + return pointed_thing.under + end + elseif pointed_thing.type == "object" then + obj = pointed_thing.ref + if obj ~= nil then + return obj:getpos() + else + return nil + end + else + return nil + end +end + +function minetest.dir_to_facedir(dir) + if math.abs(dir.x) > math.abs(dir.z) then + if dir.x < 0 then + return 3 + else + return 1 + end + else + if dir.z < 0 then + return 2 + else + return 0 + end + end +end + +function minetest.dir_to_wallmounted(dir) + if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then + if dir.y < 0 then + return 1 + else + return 0 + end + elseif math.abs(dir.x) > math.abs(dir.z) then + if dir.x < 0 then + return 3 + else + return 2 + end + else + if dir.z < 0 then + return 5 + else + return 4 + end + end +end + +function minetest.get_node_drops(nodename, toolname) + local drop = ItemStack({name=nodename}):get_definition().drop + if drop == nil then + -- default drop + return {ItemStack({name=nodename})} + elseif type(drop) == "string" then + -- itemstring drop + return {ItemStack(drop)} + elseif drop.items == nil then + -- drop = {} to disable default drop + return {} + end + + -- Extended drop table + local got_items = {} + local got_count = 0 + local _, item, tool + for _, item in ipairs(drop.items) do + local good_rarity = true + local good_tool = true + if item.rarity ~= nil then + good_rarity = item.rarity < 1 or math.random(item.rarity) == 1 + end + if item.tools ~= nil then + good_tool = false + for _, tool in ipairs(item.tools) do + if tool:sub(1, 1) == '~' then + good_tool = toolname:find(tool:sub(2)) ~= nil + else + good_tool = toolname == tool + end + if good_tool then + break + end + end + end + if good_rarity and good_tool then + got_count = got_count + 1 + for _, add_item in ipairs(item.items) do + got_items[#got_items+1] = add_item + end + if drop.max_items ~= nil and got_count == drop.max_items then + break + end + end + end + return got_items +end + +function minetest.item_place_node(itemstack, placer, pointed_thing) + local item = itemstack:peek_item() + local def = itemstack:get_definition() + if def.type == "node" and pointed_thing.type == "node" then + local pos = pointed_thing.above + local oldnode = minetest.env:get_node(pos) + local olddef = ItemStack({name=oldnode.name}):get_definition() + + if not olddef.buildable_to then + minetest.log("info", placer:get_player_name() .. " tried to place" + .. " node in invalid position " .. minetest.pos_to_string(pos) + .. ", replacing " .. oldnode.name) + return + end + + minetest.log("action", placer:get_player_name() .. " places node " + .. def.name .. " at " .. minetest.pos_to_string(pos)) + + local newnode = {name = def.name, param1 = 0, param2 = 0} + + -- Calculate direction for wall mounted stuff like torches and signs + if def.paramtype2 == 'wallmounted' then + local under = pointed_thing.under + local above = pointed_thing.above + local dir = {x = under.x - above.x, y = under.y - above.y, z = under.z - above.z} + newnode.param2 = minetest.dir_to_wallmounted(dir) + -- Calculate the direction for furnaces and chests and stuff + elseif def.paramtype2 == 'facedir' then + local playerpos = placer:getpos() + local dir = {x = pos.x - playerpos.x, y = pos.y - playerpos.y, z = pos.z - playerpos.z} + newnode.param2 = minetest.dir_to_facedir(dir) + minetest.log("action", "facedir: " .. newnode.param2) + end + + -- Add node and update + minetest.env:add_node(pos, newnode) + + -- Set metadata owner + if def.metadata_name ~= "" then + minetest.env:get_meta(pos):set_owner(placer:get_player_name()) + end + + -- Run script hook + local _, callback + for _, callback in ipairs(minetest.registered_on_placenodes) do + callback(pos, newnode, placer) + end + + itemstack:take_item() + end + return itemstack +end + +function minetest.item_place_object(itemstack, placer, pointed_thing) + local pos = minetest.get_pointed_thing_position(pointed_thing, true) + if pos ~= nil then + local item = itemstack:take_item() + minetest.env:add_item(pos, item) + end + return itemstack +end + +function minetest.item_place(itemstack, placer, pointed_thing) + if itemstack:get_definition().type == "node" then + return minetest.item_place_node(itemstack, placer, pointed_thing) + else + return minetest.item_place_object(itemstack, placer, pointed_thing) + end +end + +function minetest.item_drop(itemstack, dropper, pos) + minetest.env:add_item(pos, itemstack) + return "" +end + +function minetest.item_eat(hp_change, replace_with_item) + return function(itemstack, user, pointed_thing) -- closure + if itemstack:take_item() ~= nil then + user:set_hp(user:get_hp() + hp_change) + itemstack:add_item(replace_with_item) -- note: replace_with_item is optional + end + return itemstack + end +end + +function minetest.node_punch(pos, node, puncher) + -- Run script hook + local _, callback + for _, callback in ipairs(minetest.registered_on_punchnodes) do + callback(pos, node, puncher) + end + +end + +function minetest.node_dig(pos, node, digger) + minetest.debug("node_dig") + + local def = ItemStack({name=node.name}):get_definition() + if not def.diggable then + minetest.debug("not diggable") + minetest.log("info", digger:get_player_name() .. " tried to dig " + .. node.name .. " which is not diggable " + .. minetest.pos_to_string(pos)) + return + end + + local meta = minetest.env:get_meta(pos) + if meta ~= nil and not meta:get_allow_removal() then + minetest.debug("dig prevented by metadata") + minetest.log("info", digger:get_player_name() .. " tried to dig " + .. node.name .. ", but removal is disabled by metadata " + .. minetest.pos_to_string(pos)) + return + end + + minetest.log('action', digger:get_player_name() .. " digs " + .. node.name .. " at " .. minetest.pos_to_string(pos)) + + if not minetest.setting_getbool("creative_mode") then + local wielded = digger:get_wielded_item() + local drops = minetest.get_node_drops(node.name, wielded:get_name()) + + -- Wear out tool + tp = wielded:get_tool_capabilities() + dp = minetest.get_dig_params(def.groups, tp) + wielded:add_wear(dp.wear) + digger:set_wielded_item(wielded) + + -- Add dropped items + local _, dropped_item + for _, dropped_item in ipairs(drops) do + digger:get_inventory():add_item("main", dropped_item) + end + end + + -- Remove node and update + minetest.env:remove_node(pos) + + -- Run script hook + local _, callback + for _, callback in ipairs(minetest.registered_on_dignodes) do + callback(pos, node, digger) + end +end + +-- +-- Item definition defaults +-- + +minetest.nodedef_default = { + -- Item properties + type="node", + -- name intentionally not defined here + description = "", + groups = {}, + inventory_image = "", + wield_image = "", + wield_scale = {x=1,y=1,z=1}, + stack_max = 99, + usable = false, + liquids_pointable = false, + tool_capabilities = nil, + + -- Interaction callbacks + on_place = minetest.item_place, + on_drop = minetest.item_drop, + on_use = nil, + + on_punch = minetest.node_punch, + on_dig = minetest.node_dig, + + -- Node properties + drawtype = "normal", + visual_scale = 1.0, + tile_images = {""}, + special_materials = { + {image="", backface_culling=true}, + {image="", backface_culling=true}, + }, + alpha = 255, + post_effect_color = {a=0, r=0, g=0, b=0}, + paramtype = "none", + paramtype2 = "none", + is_ground_content = false, + sunlight_propagates = false, + walkable = true, + pointable = true, + diggable = true, + climbable = false, + buildable_to = false, + metadata_name = "", + liquidtype = "none", + liquid_alternative_flowing = "", + liquid_alternative_source = "", + liquid_viscosity = 0, + light_source = 0, + damage_per_second = 0, + selection_box = {type="regular"}, + legacy_facedir_simple = false, + legacy_wallmounted = false, +} + +minetest.craftitemdef_default = { + type="craft", + -- name intentionally not defined here + description = "", + groups = {}, + inventory_image = "", + wield_image = "", + wield_scale = {x=1,y=1,z=1}, + stack_max = 99, + liquids_pointable = false, + tool_capabilities = nil, + + -- Interaction callbacks + on_place = minetest.item_place, + on_drop = minetest.item_drop, + on_use = nil, +} + +minetest.tooldef_default = { + type="tool", + -- name intentionally not defined here + description = "", + groups = {}, + inventory_image = "", + wield_image = "", + wield_scale = {x=1,y=1,z=1}, + stack_max = 1, + liquids_pointable = false, + tool_capabilities = nil, + + -- Interaction callbacks + on_place = minetest.item_place, + on_drop = minetest.item_drop, + on_use = nil, +} + +minetest.noneitemdef_default = { -- This is used for the hand and unknown items + type="none", + -- name intentionally not defined here + description = "", + groups = {}, + inventory_image = "", + wield_image = "", + wield_scale = {x=1,y=1,z=1}, + stack_max = 99, + liquids_pointable = false, + tool_capabilities = nil, + + -- Interaction callbacks + on_place = nil, + on_drop = nil, + on_use = nil, +} + + |