805 lines
21 KiB
Lua
805 lines
21 KiB
Lua
--
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-- This file contains built-in stuff in Minetest implemented in Lua.
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--
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-- It is always loaded and executed after registration of the C API,
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-- before loading and running any mods.
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--
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--
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-- Override some Lua library functions
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--
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print = minetest.debug
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--
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--
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--
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function basic_dump2(o)
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if type(o) == "number" then
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return tostring(o)
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elseif type(o) == "string" then
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return string.format("%q", o)
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elseif type(o) == "boolean" then
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return tostring(o)
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elseif type(o) == "function" then
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return "<function>"
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elseif type(o) == "userdata" then
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return "<userdata>"
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elseif type(o) == "nil" then
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return "nil"
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else
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error("cannot dump a " .. type(o))
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return nil
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end
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end
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function dump2(o, name, dumped)
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name = name or "_"
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dumped = dumped or {}
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io.write(name, " = ")
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if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
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or type(o) == "function" or type(o) == "nil"
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or type(o) == "userdata" then
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io.write(basic_dump2(o), "\n")
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elseif type(o) == "table" then
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if dumped[o] then
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io.write(dumped[o], "\n")
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else
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dumped[o] = name
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io.write("{}\n") -- new table
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for k,v in pairs(o) do
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local fieldname = string.format("%s[%s]", name, basic_dump2(k))
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dump2(v, fieldname, dumped)
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end
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end
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else
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error("cannot dump a " .. type(o))
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return nil
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end
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end
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function dump(o, dumped)
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dumped = dumped or {}
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if type(o) == "number" then
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return tostring(o)
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elseif type(o) == "string" then
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return string.format("%q", o)
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elseif type(o) == "table" then
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if dumped[o] then
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return "<circular reference>"
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end
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dumped[o] = true
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local t = {}
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for k,v in pairs(o) do
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t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
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end
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return "{" .. table.concat(t, ", ") .. "}"
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elseif type(o) == "boolean" then
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return tostring(o)
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elseif type(o) == "function" then
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return "<function>"
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elseif type(o) == "userdata" then
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return "<userdata>"
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elseif type(o) == "nil" then
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return "nil"
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else
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error("cannot dump a " .. type(o))
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return nil
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end
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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 minetest.inventorycube(img1, img2, img3)
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img2 = img2 or img1
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img3 = img3 or img1
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return "[inventorycube"
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.. "{" .. img1:gsub("%^", "&")
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.. "{" .. img2:gsub("%^", "&")
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.. "{" .. img3:gsub("%^", "&")
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end
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function minetest.pos_to_string(pos)
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return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
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end
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function minetest.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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else
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-- The position where a node would be dug
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return pointed_thing.under
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end
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elseif pointed_thing.type == "object" then
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obj = pointed_thing.ref
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if obj ~= nil then
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return obj:getpos()
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else
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return nil
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end
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else
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return nil
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end
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end
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function minetest.dir_to_facedir(dir)
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if math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 3
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else
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return 1
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end
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else
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if dir.z < 0 then
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return 2
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else
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return 0
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end
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end
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end
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function minetest.dir_to_wallmounted(dir)
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if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
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if dir.y < 0 then
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return 1
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else
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return 0
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end
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elseif math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 3
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else
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return 2
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end
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else
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if dir.z < 0 then
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return 5
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else
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return 4
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end
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end
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end
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function minetest.get_node_drops(nodename, toolname)
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local drop = ItemStack({name=nodename}):get_definition().drop
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if drop == nil then
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-- default drop
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return {ItemStack({name=nodename})}
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elseif type(drop) == "string" then
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-- itemstring drop
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return {ItemStack(drop)}
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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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local _, item, tool
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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 then
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good_tool = false
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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 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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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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function minetest.item_place_node(itemstack, placer, pointed_thing)
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local item = itemstack:peek_item()
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local def = itemstack:get_definition()
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if def.type == "node" and pointed_thing.type == "node" then
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local pos = pointed_thing.above
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local oldnode = minetest.env:get_node(pos)
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local olddef = ItemStack({name=oldnode.name}):get_definition()
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if not olddef.buildable_to then
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minetest.log("info", placer:get_player_name() .. " tried to place"
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.. " node in invalid position " .. minetest.pos_to_string(pos)
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.. ", replacing " .. oldnode.name)
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return
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end
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minetest.log("action", placer:get_player_name() .. " places node "
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.. def.name .. " at " .. minetest.pos_to_string(pos))
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local newnode = {name = def.name, param1 = 0, param2 = 0}
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-- Calculate direction for wall mounted stuff like torches and signs
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if def.paramtype2 == 'wallmounted' then
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local under = pointed_thing.under
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local above = pointed_thing.above
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local dir = {x = under.x - above.x, y = under.y - above.y, z = under.z - above.z}
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newnode.param2 = minetest.dir_to_wallmounted(dir)
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-- Calculate the direction for furnaces and chests and stuff
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elseif def.paramtype2 == 'facedir' then
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local playerpos = placer:getpos()
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local dir = {x = pos.x - playerpos.x, y = pos.y - playerpos.y, z = pos.z - playerpos.z}
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newnode.param2 = minetest.dir_to_facedir(dir)
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minetest.log("action", "facedir: " .. newnode.param2)
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end
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-- Add node and update
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minetest.env:add_node(pos, newnode)
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-- Set metadata owner
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if def.metadata_name ~= "" then
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minetest.env:get_meta(pos):set_owner(placer:get_player_name())
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end
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-- Run script hook
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local _, callback
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for _, callback in ipairs(minetest.registered_on_placenodes) do
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callback(pos, newnode, placer)
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end
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itemstack:take_item()
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end
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return itemstack
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end
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function minetest.item_place_object(itemstack, placer, pointed_thing)
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local pos = minetest.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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minetest.env: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 minetest.item_place(itemstack, placer, pointed_thing)
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if itemstack:get_definition().type == "node" then
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return minetest.item_place_node(itemstack, placer, pointed_thing)
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else
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return minetest.item_place_object(itemstack, placer, pointed_thing)
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end
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end
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function minetest.item_drop(itemstack, dropper, pos)
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minetest.env:add_item(pos, itemstack)
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return ""
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end
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function minetest.item_eat(hp_change, replace_with_item)
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return function(itemstack, user, pointed_thing) -- closure
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if itemstack:take_item() ~= nil then
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user:set_hp(user:get_hp() + hp_change)
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itemstack:add_item(replace_with_item) -- note: replace_with_item is optional
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end
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return itemstack
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end
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end
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function minetest.node_punch(pos, node, puncher)
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-- Run script hook
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local _, callback
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for _, callback in ipairs(minetest.registered_on_punchnodes) do
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callback(pos, node, puncher)
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end
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end
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function minetest.node_dig(pos, node, digger)
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minetest.debug("node_dig")
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local def = ItemStack({name=node.name}):get_definition()
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if not def.diggable then
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minetest.debug("not diggable")
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minetest.log("info", digger:get_player_name() .. " tried to dig "
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.. node.name .. " which is not diggable "
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.. minetest.pos_to_string(pos))
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return
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end
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local meta = minetest.env:get_meta(pos)
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if meta ~= nil and not meta:get_allow_removal() then
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minetest.debug("dig prevented by metadata")
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minetest.log("info", digger:get_player_name() .. " tried to dig "
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.. node.name .. ", but removal is disabled by metadata "
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.. minetest.pos_to_string(pos))
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return
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end
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minetest.log('action', digger:get_player_name() .. " digs "
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.. node.name .. " at " .. minetest.pos_to_string(pos))
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if not minetest.setting_getbool("creative_mode") then
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local wielded = digger:get_wielded_item()
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local drops = minetest.get_node_drops(node.name, wielded:get_name())
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-- Wear out tool
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tp = wielded:get_tool_capabilities()
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dp = minetest.get_dig_params(def.groups, tp)
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wielded:add_wear(dp.wear)
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digger:set_wielded_item(wielded)
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-- Add dropped items
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local _, dropped_item
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for _, dropped_item in ipairs(drops) do
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digger:get_inventory():add_item("main", dropped_item)
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end
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end
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-- Remove node and update
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minetest.env:remove_node(pos)
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-- Run script hook
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local _, callback
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for _, callback in ipairs(minetest.registered_on_dignodes) do
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callback(pos, node, digger)
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end
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end
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--
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-- Item definition defaults
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--
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minetest.nodedef_default = {
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-- Item properties
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type="node",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 99,
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usable = false,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = minetest.item_place,
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on_drop = minetest.item_drop,
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on_use = nil,
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on_punch = minetest.node_punch,
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on_dig = minetest.node_dig,
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-- Node properties
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drawtype = "normal",
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visual_scale = 1.0,
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tile_images = {""},
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special_materials = {
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{image="", backface_culling=true},
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{image="", backface_culling=true},
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},
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alpha = 255,
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post_effect_color = {a=0, r=0, g=0, b=0},
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paramtype = "none",
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paramtype2 = "none",
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is_ground_content = false,
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sunlight_propagates = false,
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walkable = true,
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pointable = true,
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diggable = true,
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climbable = false,
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buildable_to = false,
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metadata_name = "",
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liquidtype = "none",
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liquid_alternative_flowing = "",
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liquid_alternative_source = "",
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liquid_viscosity = 0,
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light_source = 0,
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damage_per_second = 0,
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selection_box = {type="regular"},
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legacy_facedir_simple = false,
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legacy_wallmounted = false,
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}
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minetest.craftitemdef_default = {
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type="craft",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 99,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = minetest.item_place,
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on_drop = minetest.item_drop,
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on_use = nil,
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}
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minetest.tooldef_default = {
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type="tool",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 1,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = minetest.item_place,
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on_drop = minetest.item_drop,
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on_use = nil,
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}
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minetest.noneitemdef_default = { -- This is used for the hand and unknown items
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type="none",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 99,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = nil,
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on_drop = nil,
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on_use = nil,
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}
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--
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-- Make raw registration functions inaccessible to anyone except builtin.lua
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--
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local register_item_raw = minetest.register_item_raw
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minetest.register_item_raw = nil
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local register_alias_raw = minetest.register_alias_raw
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minetest.register_item_raw = nil
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--
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-- Item / entity / ABM registration functions
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--
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minetest.registered_abms = {}
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minetest.registered_entities = {}
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minetest.registered_items = {}
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minetest.registered_nodes = {}
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minetest.registered_craftitems = {}
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minetest.registered_tools = {}
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minetest.registered_aliases = {}
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-- For tables that are indexed by item name:
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-- If table[X] does not exist, default to table[minetest.registered_aliases[X]]
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local function set_alias_metatable(table)
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setmetatable(table, {
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__index = function(name)
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return rawget(table, minetest.registered_aliases[name])
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end
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})
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end
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set_alias_metatable(minetest.registered_items)
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set_alias_metatable(minetest.registered_nodes)
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set_alias_metatable(minetest.registered_craftitems)
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set_alias_metatable(minetest.registered_tools)
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-- These item names may not be used because they would interfere
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-- with legacy itemstrings
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local forbidden_item_names = {
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MaterialItem = true,
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MaterialItem2 = true,
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MaterialItem3 = true,
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NodeItem = true,
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node = true,
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CraftItem = true,
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craft = true,
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MBOItem = true,
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ToolItem = true,
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tool = true,
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}
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local function check_modname_prefix(name)
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if name:sub(1,1) == ":" then
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-- Escape the modname prefix enforcement mechanism
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return name:sub(2)
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else
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-- Modname prefix enforcement
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local expected_prefix = minetest.get_current_modname() .. ":"
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if name:sub(1, #expected_prefix) ~= expected_prefix then
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error("Name " .. name .. " does not follow naming conventions: " ..
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"\"modname:\" or \":\" prefix required")
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end
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local subname = name:sub(#expected_prefix+1)
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if subname:find("[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]") then
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error("Name " .. name .. " does not follow naming conventions: " ..
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"contains unallowed characters")
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end
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return name
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|
end
|
|
end
|
|
|
|
function minetest.register_abm(spec)
|
|
-- Add to minetest.registered_abms
|
|
minetest.registered_abms[#minetest.registered_abms+1] = spec
|
|
end
|
|
|
|
function minetest.register_entity(name, prototype)
|
|
-- Check name
|
|
if name == nil then
|
|
error("Unable to register entity: Name is nil")
|
|
end
|
|
name = check_modname_prefix(tostring(name))
|
|
|
|
prototype.name = name
|
|
prototype.__index = prototype -- so that it can be used as a metatable
|
|
|
|
-- Add to minetest.registered_entities
|
|
minetest.registered_entities[name] = prototype
|
|
end
|
|
|
|
function minetest.register_item(name, itemdef)
|
|
-- Check name
|
|
if name == nil then
|
|
error("Unable to register item: Name is nil")
|
|
end
|
|
name = check_modname_prefix(tostring(name))
|
|
if forbidden_item_names[name] then
|
|
error("Unable to register item: Name is forbidden: " .. name)
|
|
end
|
|
itemdef.name = name
|
|
|
|
-- Apply defaults and add to registered_* table
|
|
if itemdef.type == "node" then
|
|
setmetatable(itemdef, {__index = minetest.nodedef_default})
|
|
minetest.registered_nodes[itemdef.name] = itemdef
|
|
elseif itemdef.type == "craft" then
|
|
setmetatable(itemdef, {__index = minetest.craftitemdef_default})
|
|
minetest.registered_craftitems[itemdef.name] = itemdef
|
|
elseif itemdef.type == "tool" then
|
|
setmetatable(itemdef, {__index = minetest.tooldef_default})
|
|
minetest.registered_tools[itemdef.name] = itemdef
|
|
elseif itemdef.type == "none" then
|
|
setmetatable(itemdef, {__index = minetest.noneitemdef_default})
|
|
else
|
|
error("Unable to register item: Type is invalid: " .. dump(itemdef))
|
|
end
|
|
|
|
-- Flowing liquid uses param2
|
|
if itemdef.type == "node" and itemdef.liquidtype == "flowing" then
|
|
itemdef.paramtype2 = "flowingliquid"
|
|
end
|
|
|
|
-- BEGIN Legacy stuff
|
|
if itemdef.cookresult_itemstring ~= nil and itemdef.cookresult_itemstring ~= "" then
|
|
minetest.register_craft({
|
|
type="cooking",
|
|
output=itemdef.cookresult_itemstring,
|
|
recipe=itemdef.name,
|
|
cooktime=itemdef.furnace_cooktime
|
|
})
|
|
end
|
|
if itemdef.furnace_burntime ~= nil and itemdef.furnace_burntime >= 0 then
|
|
minetest.register_craft({
|
|
type="fuel",
|
|
recipe=itemdef.name,
|
|
burntime=itemdef.furnace_burntime
|
|
})
|
|
end
|
|
-- END Legacy stuff
|
|
|
|
-- Disable all further modifications
|
|
getmetatable(itemdef).__newindex = {}
|
|
|
|
--minetest.log("Registering item: " .. itemdef.name)
|
|
minetest.registered_items[itemdef.name] = itemdef
|
|
minetest.registered_aliases[itemdef.name] = nil
|
|
register_item_raw(itemdef)
|
|
end
|
|
|
|
function minetest.register_node(name, nodedef)
|
|
nodedef.type = "node"
|
|
minetest.register_item(name, nodedef)
|
|
end
|
|
|
|
function minetest.register_craftitem(name, craftitemdef)
|
|
craftitemdef.type = "craft"
|
|
|
|
-- BEGIN Legacy stuff
|
|
if craftitemdef.inventory_image == nil and craftitemdef.image ~= nil then
|
|
craftitemdef.inventory_image = craftitemdef.image
|
|
end
|
|
-- END Legacy stuff
|
|
|
|
minetest.register_item(name, craftitemdef)
|
|
end
|
|
|
|
function minetest.register_tool(name, tooldef)
|
|
tooldef.type = "tool"
|
|
tooldef.stack_max = 1
|
|
|
|
-- BEGIN Legacy stuff
|
|
if tooldef.inventory_image == nil and tooldef.image ~= nil then
|
|
tooldef.inventory_image = tooldef.image
|
|
end
|
|
if tooldef.tool_capabilities == nil and
|
|
(tooldef.full_punch_interval ~= nil or
|
|
tooldef.basetime ~= nil or
|
|
tooldef.dt_weight ~= nil or
|
|
tooldef.dt_crackiness ~= nil or
|
|
tooldef.dt_crumbliness ~= nil or
|
|
tooldef.dt_cuttability ~= nil or
|
|
tooldef.basedurability ~= nil or
|
|
tooldef.dd_weight ~= nil or
|
|
tooldef.dd_crackiness ~= nil or
|
|
tooldef.dd_crumbliness ~= nil or
|
|
tooldef.dd_cuttability ~= nil) then
|
|
tooldef.tool_capabilities = {
|
|
full_punch_interval = tooldef.full_punch_interval,
|
|
basetime = tooldef.basetime,
|
|
dt_weight = tooldef.dt_weight,
|
|
dt_crackiness = tooldef.dt_crackiness,
|
|
dt_crumbliness = tooldef.dt_crumbliness,
|
|
dt_cuttability = tooldef.dt_cuttability,
|
|
basedurability = tooldef.basedurability,
|
|
dd_weight = tooldef.dd_weight,
|
|
dd_crackiness = tooldef.dd_crackiness,
|
|
dd_crumbliness = tooldef.dd_crumbliness,
|
|
dd_cuttability = tooldef.dd_cuttability,
|
|
}
|
|
end
|
|
-- END Legacy stuff
|
|
|
|
minetest.register_item(name, tooldef)
|
|
end
|
|
|
|
function minetest.register_alias(name, convert_to)
|
|
if forbidden_item_names[name] then
|
|
error("Unable to register alias: Name is forbidden: " .. name)
|
|
end
|
|
if minetest.registered_items[name] ~= nil then
|
|
minetest.log("WARNING: Not registering alias, item with same name" ..
|
|
" is already defined: " .. name .. " -> " .. convert_to)
|
|
else
|
|
--minetest.log("Registering alias: " .. name .. " -> " .. convert_to)
|
|
minetest.registered_aliases[name] = convert_to
|
|
register_alias_raw(name, convert_to)
|
|
end
|
|
end
|
|
|
|
-- Alias the forbidden item names to "" so they can't be
|
|
-- created via itemstrings (e.g. /give)
|
|
local name
|
|
for name in pairs(forbidden_item_names) do
|
|
minetest.registered_aliases[name] = ""
|
|
register_alias_raw(name, "")
|
|
end
|
|
|
|
|
|
-- Deprecated:
|
|
-- Aliases for minetest.register_alias (how ironic...)
|
|
--minetest.alias_node = minetest.register_alias
|
|
--minetest.alias_tool = minetest.register_alias
|
|
--minetest.alias_craftitem = minetest.register_alias
|
|
|
|
--
|
|
-- Built-in node definitions. Also defined in C.
|
|
--
|
|
|
|
minetest.register_item(":unknown", {
|
|
type = "none",
|
|
description = "Unknown Item",
|
|
inventory_image = "unknown_item.png",
|
|
on_place = minetest.item_place,
|
|
on_drop = minetest.item_drop,
|
|
})
|
|
|
|
minetest.register_node(":air", {
|
|
description = "Air (you hacker you!)",
|
|
inventory_image = "unknown_block.png",
|
|
wield_image = "unknown_block.png",
|
|
drawtype = "airlike",
|
|
paramtype = "light",
|
|
sunlight_propagates = true,
|
|
walkable = false,
|
|
pointable = false,
|
|
diggable = false,
|
|
buildable_to = true,
|
|
air_equivalent = true,
|
|
})
|
|
|
|
minetest.register_node(":ignore", {
|
|
description = "Ignore (you hacker you!)",
|
|
inventory_image = "unknown_block.png",
|
|
wield_image = "unknown_block.png",
|
|
drawtype = "airlike",
|
|
paramtype = "none",
|
|
sunlight_propagates = false,
|
|
walkable = false,
|
|
pointable = false,
|
|
diggable = false,
|
|
buildable_to = true, -- A way to remove accidentally placed ignores
|
|
air_equivalent = true,
|
|
})
|
|
|
|
-- The hand (bare definition)
|
|
minetest.register_item(":", {
|
|
type = "none",
|
|
})
|
|
|
|
--
|
|
-- Default material types
|
|
--
|
|
function digprop_err()
|
|
minetest.log("info", debug.traceback())
|
|
minetest.log("info", "WARNING: The minetest.digprop_* functions are obsolete and need to be replaced by item groups.")
|
|
end
|
|
|
|
minetest.digprop_constanttime = digprop_err
|
|
minetest.digprop_stonelike = digprop_err
|
|
minetest.digprop_dirtlike = digprop_err
|
|
minetest.digprop_gravellike = digprop_err
|
|
minetest.digprop_woodlike = digprop_err
|
|
minetest.digprop_leaveslike = digprop_err
|
|
minetest.digprop_glasslike = digprop_err
|
|
|
|
--
|
|
-- Creative inventory
|
|
--
|
|
|
|
minetest.creative_inventory = {}
|
|
|
|
minetest.add_to_creative_inventory = function(itemstring)
|
|
table.insert(minetest.creative_inventory, itemstring)
|
|
end
|
|
|
|
--
|
|
-- Callback registration
|
|
--
|
|
|
|
local function make_registration()
|
|
local t = {}
|
|
local registerfunc = function(func) table.insert(t, func) end
|
|
return t, registerfunc
|
|
end
|
|
|
|
minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
|
|
minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
|
|
minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
|
|
minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
|
|
minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
|
|
minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
|
|
minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
|
|
minetest.registered_on_dieplayers, minetest.register_on_dieplayer = make_registration()
|
|
minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
|
|
|
|
--
|
|
-- Set random seed
|
|
--
|
|
|
|
math.randomseed(os.time())
|
|
|
|
-- END
|