mirror of
https://github.com/minetest/minetest.git
synced 2024-09-12 00:26:50 +02:00
739 lines
21 KiB
Lua
739 lines
21 KiB
Lua
-- Minetest: builtin/item.lua
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local builtin_shared = ...
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local function copy_pointed_thing(pointed_thing)
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return {
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type = pointed_thing.type,
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above = pointed_thing.above and vector.copy(pointed_thing.above),
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under = pointed_thing.under and vector.copy(pointed_thing.under),
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ref = pointed_thing.ref,
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}
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end
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--
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-- Item definition helpers
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--
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function core.get_pointed_thing_position(pointed_thing, above)
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if pointed_thing.type == "node" then
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if above then
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-- The position where a node would be placed
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return pointed_thing.above
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end
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-- The position where a node would be dug
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return pointed_thing.under
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elseif pointed_thing.type == "object" then
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return pointed_thing.ref and pointed_thing.ref:get_pos()
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end
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end
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local function has_all_groups(tbl, required_groups)
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if type(required_groups) == "string" then
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return (tbl[required_groups] or 0) ~= 0
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end
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for _, group in ipairs(required_groups) do
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if (tbl[group] or 0) == 0 then
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return false
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end
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end
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return true
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end
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function core.get_node_drops(node, toolname)
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-- Compatibility, if node is string
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local nodename = node
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local param2 = 0
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-- New format, if node is table
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if (type(node) == "table") then
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nodename = node.name
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param2 = node.param2
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end
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local def = core.registered_nodes[nodename]
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local drop = def and def.drop
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local ptype = def and def.paramtype2
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-- get color, if there is color (otherwise nil)
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local palette_index = core.strip_param2_color(param2, ptype)
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if drop == nil then
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-- default drop
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if palette_index then
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local stack = ItemStack(nodename)
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stack:get_meta():set_int("palette_index", palette_index)
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return {stack:to_string()}
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end
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return {nodename}
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elseif type(drop) == "string" then
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-- itemstring drop
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return drop ~= "" and {drop} or {}
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elseif drop.items == nil then
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-- drop = {} to disable default drop
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return {}
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end
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-- Extended drop table
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local got_items = {}
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local got_count = 0
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for _, item in ipairs(drop.items) do
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local good_rarity = true
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local good_tool = true
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if item.rarity ~= nil then
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good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
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end
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if item.tools ~= nil or item.tool_groups ~= nil then
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good_tool = false
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end
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if item.tools ~= nil and toolname then
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for _, tool in ipairs(item.tools) do
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if tool:sub(1, 1) == '~' then
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good_tool = toolname:find(tool:sub(2)) ~= nil
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else
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good_tool = toolname == tool
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end
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if good_tool then
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break
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end
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end
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end
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if item.tool_groups ~= nil and toolname then
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local tooldef = core.registered_items[toolname]
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if tooldef ~= nil and type(tooldef.groups) == "table" then
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if type(item.tool_groups) == "string" then
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-- tool_groups can be a string which specifies the required group
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good_tool = core.get_item_group(toolname, item.tool_groups) ~= 0
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else
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-- tool_groups can be a list of sufficient requirements.
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-- i.e. if any item in the list can be satisfied then the tool is good
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assert(type(item.tool_groups) == "table")
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for _, required_groups in ipairs(item.tool_groups) do
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-- required_groups can be either a string (a single group),
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-- or an array of strings where all must be in tooldef.groups
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good_tool = has_all_groups(tooldef.groups, required_groups)
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if good_tool then
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break
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end
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end
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end
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end
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end
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if good_rarity and good_tool then
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got_count = got_count + 1
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for _, add_item in ipairs(item.items) do
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-- add color, if necessary
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if item.inherit_color and palette_index then
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local stack = ItemStack(add_item)
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stack:get_meta():set_int("palette_index", palette_index)
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add_item = stack:to_string()
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end
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got_items[#got_items+1] = add_item
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end
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if drop.max_items ~= nil and got_count == drop.max_items then
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break
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end
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end
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end
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return got_items
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end
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local function user_name(user)
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return user and user:get_player_name() or ""
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end
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-- Returns a logging function. For empty names, does not log.
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local function make_log(name)
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return name ~= "" and core.log or function() end
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end
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function core.item_place_node(itemstack, placer, pointed_thing, param2,
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prevent_after_place)
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local def = itemstack:get_definition()
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if def.type ~= "node" or pointed_thing.type ~= "node" then
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return itemstack, nil
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end
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local under = pointed_thing.under
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local oldnode_under = core.get_node_or_nil(under)
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local above = pointed_thing.above
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local oldnode_above = core.get_node_or_nil(above)
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local playername = user_name(placer)
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local log = make_log(playername)
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if not oldnode_under or not oldnode_above then
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log("info", playername .. " tried to place"
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.. " node in unloaded position " .. core.pos_to_string(above))
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return itemstack, nil
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end
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local olddef_under = core.registered_nodes[oldnode_under.name]
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olddef_under = olddef_under or core.nodedef_default
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local olddef_above = core.registered_nodes[oldnode_above.name]
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olddef_above = olddef_above or core.nodedef_default
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if not olddef_above.buildable_to and not olddef_under.buildable_to then
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log("info", playername .. " tried to place"
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.. " node in invalid position " .. core.pos_to_string(above)
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.. ", replacing " .. oldnode_above.name)
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return itemstack, nil
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end
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-- Place above pointed node
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local place_to = vector.copy(above)
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-- If node under is buildable_to, place into it instead (eg. snow)
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if olddef_under.buildable_to then
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log("info", "node under is buildable to")
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place_to = vector.copy(under)
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end
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if core.is_protected(place_to, playername) then
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log("action", playername
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.. " tried to place " .. def.name
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.. " at protected position "
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.. core.pos_to_string(place_to))
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core.record_protection_violation(place_to, playername)
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return itemstack, nil
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end
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local oldnode = core.get_node(place_to)
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local newnode = {name = def.name, param1 = 0, param2 = param2 or 0}
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-- Calculate direction for wall mounted stuff like torches and signs
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if def.place_param2 ~= nil then
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newnode.param2 = def.place_param2
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elseif (def.paramtype2 == "wallmounted" or
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def.paramtype2 == "colorwallmounted") and not param2 then
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local dir = vector.subtract(under, above)
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-- If you change this code, also change src/client/game.cpp
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newnode.param2 = core.dir_to_wallmounted(dir)
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if def.wallmounted_rotate_vertical and
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(newnode.param2 == 0 or newnode.param2 == 1) then
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local placer_pos = placer and placer:get_pos()
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if placer_pos then
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local pdir = {
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x = above.x - placer_pos.x,
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y = dir.y,
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z = above.z - placer_pos.z
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}
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local rotate = false
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if def.drawtype == "torchlike" then
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if not ((pdir.x < 0 and pdir.z > 0) or
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(pdir.x > 0 and pdir.z < 0)) then
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rotate = true
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end
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if pdir.y > 0 then
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rotate = not rotate
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end
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elseif def.drawtype == "signlike" then
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if math.abs(pdir.x) < math.abs(pdir.z) then
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rotate = true
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end
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else
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if math.abs(pdir.x) > math.abs(pdir.z) then
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rotate = true
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end
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end
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if rotate then
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newnode.param2 = newnode.param2 + 6
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end
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end
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end
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-- Calculate the direction for furnaces and chests and stuff
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elseif (def.paramtype2 == "facedir" or
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def.paramtype2 == "colorfacedir" or
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def.paramtype2 == "4dir" or
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def.paramtype2 == "color4dir") and not param2 then
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local placer_pos = placer and placer:get_pos()
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if placer_pos then
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local dir = vector.subtract(above, placer_pos)
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newnode.param2 = core.dir_to_facedir(dir)
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log("info", "facedir: " .. newnode.param2)
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end
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end
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local metatable = itemstack:get_meta():to_table().fields
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-- Transfer color information
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if metatable.palette_index and not def.place_param2 then
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local color_divisor = nil
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if def.paramtype2 == "color" then
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color_divisor = 1
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elseif def.paramtype2 == "colorwallmounted" then
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color_divisor = 8
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elseif def.paramtype2 == "colorfacedir" then
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color_divisor = 32
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elseif def.paramtype2 == "color4dir" then
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color_divisor = 4
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elseif def.paramtype2 == "colordegrotate" then
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color_divisor = 32
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end
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if color_divisor then
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local color = math.floor(metatable.palette_index / color_divisor)
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local other = newnode.param2 % color_divisor
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newnode.param2 = color * color_divisor + other
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end
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end
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-- Check if the node is attached and if it can be placed there
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local an = core.get_item_group(def.name, "attached_node")
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if an ~= 0 and
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not builtin_shared.check_attached_node(place_to, newnode, an) then
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log("action", "attached node " .. def.name ..
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" cannot be placed at " .. core.pos_to_string(place_to))
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return itemstack, nil
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end
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log("action", playername .. " places node "
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.. def.name .. " at " .. core.pos_to_string(place_to))
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-- Add node and update
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core.add_node(place_to, newnode)
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-- Play sound if it was done by a player
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if playername ~= "" and def.sounds and def.sounds.place then
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core.sound_play(def.sounds.place, {
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pos = place_to,
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exclude_player = playername,
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}, true)
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end
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local take_item = true
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-- Run callback
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if def.after_place_node and not prevent_after_place then
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-- Deepcopy place_to and pointed_thing because callback can modify it
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local place_to_copy = vector.copy(place_to)
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local pointed_thing_copy = copy_pointed_thing(pointed_thing)
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if def.after_place_node(place_to_copy, placer, itemstack,
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pointed_thing_copy) then
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take_item = false
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end
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end
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-- Run script hook
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for _, callback in ipairs(core.registered_on_placenodes) do
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-- Deepcopy pos, node and pointed_thing because callback can modify them
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local place_to_copy = vector.copy(place_to)
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local newnode_copy = {name=newnode.name, param1=newnode.param1, param2=newnode.param2}
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local oldnode_copy = {name=oldnode.name, param1=oldnode.param1, param2=oldnode.param2}
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local pointed_thing_copy = copy_pointed_thing(pointed_thing)
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if callback(place_to_copy, newnode_copy, placer, oldnode_copy, itemstack, pointed_thing_copy) then
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take_item = false
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end
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end
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if take_item then
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itemstack:take_item()
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end
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return itemstack, place_to
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end
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-- deprecated, item_place does not call this
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function core.item_place_object(itemstack, placer, pointed_thing)
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local pos = core.get_pointed_thing_position(pointed_thing, true)
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if pos ~= nil then
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local item = itemstack:take_item()
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core.add_item(pos, item)
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end
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return itemstack
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end
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function core.item_place(itemstack, placer, pointed_thing, param2)
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-- Call on_rightclick if the pointed node defines it
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if pointed_thing.type == "node" and placer and
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not placer:get_player_control().sneak then
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local n = core.get_node(pointed_thing.under)
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local nn = n.name
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if core.registered_nodes[nn] and core.registered_nodes[nn].on_rightclick then
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return core.registered_nodes[nn].on_rightclick(pointed_thing.under, n,
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placer, itemstack, pointed_thing) or itemstack, nil
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end
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end
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-- Place if node, otherwise do nothing
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if itemstack:get_definition().type == "node" then
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return core.item_place_node(itemstack, placer, pointed_thing, param2)
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end
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return itemstack, nil
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end
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function core.item_secondary_use(itemstack, placer)
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return itemstack
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end
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function core.item_drop(itemstack, dropper, pos)
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local dropper_is_player = dropper and dropper:is_player()
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local p = table.copy(pos)
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local cnt = itemstack:get_count()
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if dropper_is_player then
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p.y = p.y + 1.2
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end
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local item = itemstack:take_item(cnt)
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local obj = core.add_item(p, item)
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if obj then
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if dropper_is_player then
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local dir = dropper:get_look_dir()
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dir.x = dir.x * 2.9
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dir.y = dir.y * 2.9 + 2
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dir.z = dir.z * 2.9
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obj:set_velocity(dir)
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obj:get_luaentity().dropped_by = dropper:get_player_name()
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end
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return itemstack
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end
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-- If we reach this, adding the object to the
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-- environment failed
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end
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function core.item_pickup(itemstack, picker, pointed_thing, ...)
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itemstack = ItemStack(itemstack)
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-- Invoke global on_item_pickup callbacks.
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for _, callback in ipairs(core.registered_on_item_pickups) do
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local result = callback(itemstack, picker, pointed_thing, ...)
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if result then
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return ItemStack(result)
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end
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end
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-- Pickup item.
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local inv = picker and picker:get_inventory()
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if inv then
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return inv:add_item("main", itemstack)
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end
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return itemstack
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end
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function core.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)
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for _, callback in ipairs(core.registered_on_item_eats) do
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local result = callback(hp_change, replace_with_item, itemstack, user, pointed_thing)
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if result then
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return result
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end
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end
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-- read definition before potentially emptying the stack
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local def = itemstack:get_definition()
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if itemstack:take_item():is_empty() then
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return itemstack
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end
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if def and def.sound and def.sound.eat then
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core.sound_play(def.sound.eat, {
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pos = user:get_pos(),
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max_hear_distance = 16
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}, true)
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end
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-- Changing hp might kill the player causing mods to do who-knows-what to the
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-- inventory, so do this before set_hp().
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replace_with_item = itemstack:add_item(replace_with_item)
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user:set_wielded_item(itemstack)
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if not replace_with_item:is_empty() then
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local inv = user:get_inventory()
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-- Check if inv is null, since non-players don't have one
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if inv then
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replace_with_item = inv:add_item("main", replace_with_item)
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end
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end
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if not replace_with_item:is_empty() then
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local pos = user:get_pos()
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pos.y = math.floor(pos.y + 0.5)
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core.add_item(pos, replace_with_item)
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end
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user:set_hp(user:get_hp() + hp_change)
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return nil -- don't overwrite wield item a second time
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end
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function core.item_eat(hp_change, replace_with_item)
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return function(itemstack, user, pointed_thing) -- closure
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if user then
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return core.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)
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end
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end
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end
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function core.node_punch(pos, node, puncher, pointed_thing)
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-- Run script hook
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for _, callback in ipairs(core.registered_on_punchnodes) do
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-- Copy pos and node because callback can modify them
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local pos_copy = vector.copy(pos)
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local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
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local pointed_thing_copy = pointed_thing and copy_pointed_thing(pointed_thing) or nil
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callback(pos_copy, node_copy, puncher, pointed_thing_copy)
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end
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end
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function core.handle_node_drops(pos, drops, digger)
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-- Add dropped items to object's inventory
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local inv = digger and digger:get_inventory()
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local give_item
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if inv then
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give_item = function(item)
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return inv:add_item("main", item)
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end
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else
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give_item = function(item)
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-- itemstring to ItemStack for left:is_empty()
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return ItemStack(item)
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end
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end
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for _, dropped_item in pairs(drops) do
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local left = give_item(dropped_item)
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if not left:is_empty() then
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local p = vector.offset(pos,
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math.random()/2-0.25,
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math.random()/2-0.25,
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math.random()/2-0.25
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)
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core.add_item(p, left)
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end
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end
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end
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function core.node_dig(pos, node, digger)
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local diggername = user_name(digger)
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local log = make_log(diggername)
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local def = core.registered_nodes[node.name]
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-- Copy pos because the callback could modify it
|
|
if def and (not def.diggable or
|
|
(def.can_dig and not def.can_dig(vector.copy(pos), digger))) then
|
|
log("info", diggername .. " tried to dig "
|
|
.. node.name .. " which is not diggable "
|
|
.. core.pos_to_string(pos))
|
|
return false
|
|
end
|
|
|
|
if core.is_protected(pos, diggername) then
|
|
log("action", diggername
|
|
.. " tried to dig " .. node.name
|
|
.. " at protected position "
|
|
.. core.pos_to_string(pos))
|
|
core.record_protection_violation(pos, diggername)
|
|
return false
|
|
end
|
|
|
|
log('action', diggername .. " digs "
|
|
.. node.name .. " at " .. core.pos_to_string(pos))
|
|
|
|
local wielded = digger and digger:get_wielded_item()
|
|
local drops = core.get_node_drops(node, wielded and wielded:get_name())
|
|
|
|
if wielded then
|
|
local wdef = wielded:get_definition()
|
|
local tp = wielded:get_tool_capabilities()
|
|
local dp = core.get_dig_params(def and def.groups, tp, wielded:get_wear())
|
|
if wdef and wdef.after_use then
|
|
wielded = wdef.after_use(wielded, digger, node, dp) or wielded
|
|
else
|
|
-- Wear out tool
|
|
if not core.is_creative_enabled(diggername) then
|
|
wielded:add_wear(dp.wear)
|
|
if wielded:get_count() == 0 and wdef.sound and wdef.sound.breaks then
|
|
core.sound_play(wdef.sound.breaks, {
|
|
pos = pos,
|
|
gain = 0.5
|
|
}, true)
|
|
end
|
|
end
|
|
end
|
|
digger:set_wielded_item(wielded)
|
|
end
|
|
|
|
-- Check to see if metadata should be preserved.
|
|
if def and def.preserve_metadata then
|
|
local oldmeta = core.get_meta(pos):to_table().fields
|
|
-- Copy pos and node because the callback can modify them.
|
|
local pos_copy = vector.copy(pos)
|
|
local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
|
|
local drop_stacks = {}
|
|
for k, v in pairs(drops) do
|
|
drop_stacks[k] = ItemStack(v)
|
|
end
|
|
drops = drop_stacks
|
|
def.preserve_metadata(pos_copy, node_copy, oldmeta, drops)
|
|
end
|
|
|
|
-- Handle drops
|
|
core.handle_node_drops(pos, drops, digger)
|
|
|
|
local oldmetadata = nil
|
|
if def and def.after_dig_node then
|
|
oldmetadata = core.get_meta(pos):to_table()
|
|
end
|
|
|
|
-- Remove node and update
|
|
core.remove_node(pos)
|
|
|
|
-- Play sound if it was done by a player
|
|
if diggername ~= "" and def and def.sounds and def.sounds.dug then
|
|
core.sound_play(def.sounds.dug, {
|
|
pos = pos,
|
|
exclude_player = diggername,
|
|
}, true)
|
|
end
|
|
|
|
-- Run callback
|
|
if def and def.after_dig_node then
|
|
-- Copy pos and node because callback can modify them
|
|
local pos_copy = vector.copy(pos)
|
|
local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
|
|
def.after_dig_node(pos_copy, node_copy, oldmetadata, digger)
|
|
end
|
|
|
|
-- Run script hook
|
|
for _, callback in ipairs(core.registered_on_dignodes) do
|
|
local origin = core.callback_origins[callback]
|
|
core.set_last_run_mod(origin.mod)
|
|
|
|
-- Copy pos and node because callback can modify them
|
|
local pos_copy = vector.copy(pos)
|
|
local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
|
|
callback(pos_copy, node_copy, digger)
|
|
end
|
|
|
|
return true
|
|
end
|
|
|
|
function core.itemstring_with_palette(item, palette_index)
|
|
local stack = ItemStack(item) -- convert to ItemStack
|
|
stack:get_meta():set_int("palette_index", palette_index)
|
|
return stack:to_string()
|
|
end
|
|
|
|
function core.itemstring_with_color(item, colorstring)
|
|
local stack = ItemStack(item) -- convert to ItemStack
|
|
stack:get_meta():set_string("color", colorstring)
|
|
return stack:to_string()
|
|
end
|
|
|
|
-- This is used to allow mods to redefine core.item_place and so on
|
|
-- NOTE: This is not the preferred way. Preferred way is to provide enough
|
|
-- callbacks to not require redefining global functions. -celeron55
|
|
local function redef_wrapper(table, name)
|
|
return function(...)
|
|
return table[name](...)
|
|
end
|
|
end
|
|
|
|
--
|
|
-- Item definition defaults
|
|
--
|
|
|
|
local default_stack_max = tonumber(core.settings:get("default_stack_max")) or 99
|
|
|
|
core.nodedef_default = {
|
|
-- Item properties
|
|
type="node",
|
|
-- name intentionally not defined here
|
|
description = "",
|
|
groups = {},
|
|
inventory_image = "",
|
|
wield_image = "",
|
|
wield_scale = vector.new(1, 1, 1),
|
|
stack_max = default_stack_max,
|
|
usable = false,
|
|
liquids_pointable = false,
|
|
tool_capabilities = nil,
|
|
node_placement_prediction = nil,
|
|
|
|
-- Interaction callbacks
|
|
on_place = redef_wrapper(core, 'item_place'), -- core.item_place
|
|
on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
|
|
on_pickup = redef_wrapper(core, 'item_pickup'), -- core.item_pickup
|
|
on_use = nil,
|
|
can_dig = nil,
|
|
|
|
on_punch = redef_wrapper(core, 'node_punch'), -- core.node_punch
|
|
on_rightclick = nil,
|
|
on_dig = redef_wrapper(core, 'node_dig'), -- core.node_dig
|
|
|
|
on_receive_fields = nil,
|
|
|
|
-- Node properties
|
|
drawtype = "normal",
|
|
visual_scale = 1.0,
|
|
tiles = nil,
|
|
special_tiles = nil,
|
|
post_effect_color = {a=0, r=0, g=0, b=0},
|
|
paramtype = "none",
|
|
paramtype2 = "none",
|
|
is_ground_content = true,
|
|
sunlight_propagates = false,
|
|
walkable = true,
|
|
pointable = true,
|
|
diggable = true,
|
|
climbable = false,
|
|
buildable_to = false,
|
|
floodable = false,
|
|
liquidtype = "none",
|
|
liquid_alternative_flowing = "",
|
|
liquid_alternative_source = "",
|
|
liquid_viscosity = 0,
|
|
drowning = 0,
|
|
light_source = 0,
|
|
damage_per_second = 0,
|
|
selection_box = {type="regular"},
|
|
legacy_facedir_simple = false,
|
|
legacy_wallmounted = false,
|
|
}
|
|
|
|
core.craftitemdef_default = {
|
|
type="craft",
|
|
-- name intentionally not defined here
|
|
description = "",
|
|
groups = {},
|
|
inventory_image = "",
|
|
wield_image = "",
|
|
wield_scale = vector.new(1, 1, 1),
|
|
stack_max = default_stack_max,
|
|
liquids_pointable = false,
|
|
tool_capabilities = nil,
|
|
|
|
-- Interaction callbacks
|
|
on_place = redef_wrapper(core, 'item_place'), -- core.item_place
|
|
on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
|
|
on_pickup = redef_wrapper(core, 'item_pickup'), -- core.item_pickup
|
|
on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
|
|
on_use = nil,
|
|
}
|
|
|
|
core.tooldef_default = {
|
|
type="tool",
|
|
-- name intentionally not defined here
|
|
description = "",
|
|
groups = {},
|
|
inventory_image = "",
|
|
wield_image = "",
|
|
wield_scale = vector.new(1, 1, 1),
|
|
stack_max = 1,
|
|
liquids_pointable = false,
|
|
tool_capabilities = nil,
|
|
|
|
-- Interaction callbacks
|
|
on_place = redef_wrapper(core, 'item_place'), -- core.item_place
|
|
on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
|
|
on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
|
|
on_pickup = redef_wrapper(core, 'item_pickup'), -- core.item_pickup
|
|
on_use = nil,
|
|
}
|
|
|
|
core.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 = vector.new(1, 1, 1),
|
|
stack_max = default_stack_max,
|
|
liquids_pointable = false,
|
|
tool_capabilities = nil,
|
|
|
|
-- Interaction callbacks
|
|
on_place = redef_wrapper(core, 'item_place'), -- core.item_place
|
|
on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
|
|
on_pickup = redef_wrapper(core, 'item_pickup'), -- core.item_pickup
|
|
on_drop = nil,
|
|
on_use = nil,
|
|
}
|