2012-04-01 11:37:41 +02:00
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-- Minetest: builtin/misc_helpers.lua
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2015-06-01 18:16:07 +02:00
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--------------------------------------------------------------------------------
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-- Localize functions to avoid table lookups (better performance).
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2015-06-02 00:20:12 +02:00
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local string_sub, string_find = string.sub, string.find
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2015-06-01 18:16:07 +02:00
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2013-07-16 21:03:57 +02:00
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--------------------------------------------------------------------------------
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2020-03-06 21:19:14 +01:00
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local function basic_dump(o)
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2014-05-09 05:56:36 +02:00
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local tp = type(o)
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if tp == "number" then
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2012-04-01 11:37:41 +02:00
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return tostring(o)
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2014-05-09 05:56:36 +02:00
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elseif tp == "string" then
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2012-04-01 11:37:41 +02:00
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return string.format("%q", o)
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2014-05-09 05:56:36 +02:00
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elseif tp == "boolean" then
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2012-04-01 11:37:41 +02:00
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return tostring(o)
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2014-05-09 05:56:36 +02:00
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elseif tp == "nil" then
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2012-04-01 11:37:41 +02:00
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return "nil"
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2014-05-09 05:56:36 +02:00
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-- Uncomment for full function dumping support.
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-- Not currently enabled because bytecode isn't very human-readable and
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-- dump's output is intended for humans.
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--elseif tp == "function" then
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-- return string.format("loadstring(%q)", string.dump(o))
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2020-06-09 19:37:25 +02:00
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elseif tp == "userdata" then
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return tostring(o)
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2012-04-01 11:37:41 +02:00
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else
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2014-05-09 05:56:36 +02:00
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return string.format("<%s>", tp)
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2012-04-01 11:37:41 +02:00
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end
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end
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2014-07-20 05:39:23 +02:00
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local keywords = {
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["and"] = true,
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["break"] = true,
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["do"] = true,
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["else"] = true,
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["elseif"] = true,
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["end"] = true,
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["false"] = true,
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["for"] = true,
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["function"] = true,
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["goto"] = true, -- Lua 5.2
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["if"] = true,
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["in"] = true,
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["local"] = true,
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["nil"] = true,
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["not"] = true,
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["or"] = true,
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["repeat"] = true,
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["return"] = true,
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["then"] = true,
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["true"] = true,
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["until"] = true,
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["while"] = true,
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}
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local function is_valid_identifier(str)
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if not str:find("^[a-zA-Z_][a-zA-Z0-9_]*$") or keywords[str] then
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return false
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end
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return true
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end
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2013-07-16 21:03:57 +02:00
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--------------------------------------------------------------------------------
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2014-05-09 05:56:36 +02:00
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-- Dumps values in a line-per-value format.
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-- For example, {test = {"Testing..."}} becomes:
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-- _["test"] = {}
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-- _["test"][1] = "Testing..."
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-- This handles tables as keys and circular references properly.
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-- It also handles multiple references well, writing the table only once.
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-- The dumped argument is internal-only.
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2012-04-01 11:37:41 +02:00
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function dump2(o, name, dumped)
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name = name or "_"
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2014-05-09 05:56:36 +02:00
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-- "dumped" is used to keep track of serialized tables to handle
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-- multiple references and circular tables properly.
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-- It only contains tables as keys. The value is the name that
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-- the table has in the dump, eg:
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-- {x = {"y"}} -> dumped[{"y"}] = '_["x"]'
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2012-04-01 11:37:41 +02:00
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dumped = dumped or {}
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2014-05-09 05:56:36 +02:00
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if type(o) ~= "table" then
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return string.format("%s = %s\n", name, basic_dump(o))
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end
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if dumped[o] then
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return string.format("%s = %s\n", name, dumped[o])
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end
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dumped[o] = name
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-- This contains a list of strings to be concatenated later (because
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-- Lua is slow at individual concatenation).
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local t = {}
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for k, v in pairs(o) do
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local keyStr
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if type(k) == "table" then
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if dumped[k] then
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keyStr = dumped[k]
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else
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-- Key tables don't have a name, so use one of
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-- the form _G["table: 0xFFFFFFF"]
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keyStr = string.format("_G[%q]", tostring(k))
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-- Dump key table
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2016-03-06 16:53:45 +01:00
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t[#t + 1] = dump2(k, keyStr, dumped)
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2012-04-01 11:37:41 +02:00
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end
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2014-05-09 05:56:36 +02:00
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else
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keyStr = basic_dump(k)
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2012-04-01 11:37:41 +02:00
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end
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2014-05-09 05:56:36 +02:00
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local vname = string.format("%s[%s]", name, keyStr)
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2016-03-06 16:53:45 +01:00
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t[#t + 1] = dump2(v, vname, dumped)
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2012-04-01 11:37:41 +02:00
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end
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2014-05-09 05:56:36 +02:00
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return string.format("%s = {}\n%s", name, table.concat(t))
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2012-04-01 11:37:41 +02:00
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end
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2013-07-16 21:03:57 +02:00
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--------------------------------------------------------------------------------
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2014-07-20 05:39:23 +02:00
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-- This dumps values in a one-statement format.
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-- For example, {test = {"Testing..."}} becomes:
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-- [[{
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-- test = {
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-- "Testing..."
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-- }
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-- }]]
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2014-05-09 05:56:36 +02:00
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-- This supports tables as keys, but not circular references.
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-- It performs poorly with multiple references as it writes out the full
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-- table each time.
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2014-07-20 05:39:23 +02:00
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-- The indent field specifies a indentation string, it defaults to a tab.
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-- Use the empty string to disable indentation.
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-- The dumped and level arguments are internal-only.
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2014-05-09 05:56:36 +02:00
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2014-07-20 05:39:23 +02:00
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function dump(o, indent, nested, level)
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2018-02-08 19:17:06 +01:00
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local t = type(o)
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if not level and t == "userdata" then
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-- when userdata (e.g. player) is passed directly, print its metatable:
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return "userdata metatable: " .. dump(getmetatable(o))
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end
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if t ~= "table" then
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2014-05-09 05:56:36 +02:00
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return basic_dump(o)
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2012-04-01 11:37:41 +02:00
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end
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2019-08-06 20:30:18 +02:00
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2014-07-20 05:39:23 +02:00
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-- Contains table -> true/nil of currently nested tables
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nested = nested or {}
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if nested[o] then
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return "<circular reference>"
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end
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nested[o] = true
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indent = indent or "\t"
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level = level or 1
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2019-08-06 20:30:18 +02:00
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local ret = {}
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2014-07-20 05:39:23 +02:00
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local dumped_indexes = {}
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for i, v in ipairs(o) do
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2019-08-06 20:30:18 +02:00
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ret[#ret + 1] = dump(v, indent, nested, level + 1)
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2014-07-20 05:39:23 +02:00
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dumped_indexes[i] = true
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end
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for k, v in pairs(o) do
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if not dumped_indexes[k] then
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if type(k) ~= "string" or not is_valid_identifier(k) then
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k = "["..dump(k, indent, nested, level + 1).."]"
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end
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v = dump(v, indent, nested, level + 1)
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2019-08-06 20:30:18 +02:00
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ret[#ret + 1] = k.." = "..v
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2014-07-20 05:39:23 +02:00
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end
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end
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nested[o] = nil
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if indent ~= "" then
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local indent_str = "\n"..string.rep(indent, level)
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2014-11-08 18:48:05 +01:00
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local end_indent_str = "\n"..string.rep(indent, level - 1)
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2014-07-20 05:39:23 +02:00
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return string.format("{%s%s%s}",
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indent_str,
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2019-08-06 20:30:18 +02:00
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table.concat(ret, ","..indent_str),
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2014-07-20 05:39:23 +02:00
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end_indent_str)
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end
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2019-08-06 20:30:18 +02:00
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return "{"..table.concat(ret, ", ").."}"
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2012-04-01 11:37:41 +02:00
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end
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2015-07-18 14:31:34 +02:00
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--------------------------------------------------------------------------------
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2014-12-19 03:50:31 +01:00
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function string.split(str, delim, include_empty, max_splits, sep_is_pattern)
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2014-10-09 00:11:44 +02:00
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delim = delim or ","
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2023-01-10 15:25:48 +01:00
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if delim == "" then
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error("string.split separator is empty", 2)
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end
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2018-11-01 21:07:01 +01:00
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max_splits = max_splits or -2
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2014-12-19 03:50:31 +01:00
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local items = {}
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2018-09-23 22:06:51 +02:00
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local pos, len = 1, #str
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2014-12-19 03:50:31 +01:00
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local plain = not sep_is_pattern
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max_splits = max_splits + 1
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repeat
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2015-06-02 00:20:12 +02:00
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local np, npe = string_find(str, delim, pos, plain)
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2014-12-19 03:50:31 +01:00
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np, npe = (np or (len+1)), (npe or (len+1))
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if (not np) or (max_splits == 1) then
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np = len + 1
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npe = np
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2014-10-09 00:11:44 +02:00
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end
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2015-06-01 18:16:07 +02:00
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local s = string_sub(str, pos, np - 1)
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2014-12-19 03:50:31 +01:00
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if include_empty or (s ~= "") then
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max_splits = max_splits - 1
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2016-03-06 16:53:45 +01:00
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items[#items + 1] = s
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2014-10-09 00:11:44 +02:00
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end
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2014-12-19 03:50:31 +01:00
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pos = npe + 1
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2015-01-05 00:10:25 +01:00
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until (max_splits == 0) or (pos > (len + 1))
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2014-12-19 03:50:31 +01:00
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return items
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2012-04-01 11:37:41 +02:00
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end
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2015-07-18 14:31:34 +02:00
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--------------------------------------------------------------------------------
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function table.indexof(list, val)
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2016-03-06 16:53:45 +01:00
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for i, v in ipairs(list) do
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if v == val then
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2015-07-18 14:31:34 +02:00
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return i
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end
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end
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return -1
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end
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2013-07-16 21:03:57 +02:00
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--------------------------------------------------------------------------------
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2012-04-01 11:37:41 +02:00
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function string:trim()
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2022-05-27 21:40:38 +02:00
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return self:match("^%s*(.-)%s*$")
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2012-04-01 11:37:41 +02:00
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end
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2013-07-16 21:03:57 +02:00
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--------------------------------------------------------------------------------
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2013-07-07 18:02:11 +02:00
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function math.hypot(x, y)
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2021-08-27 20:22:35 +02:00
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return math.sqrt(x * x + y * y)
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2013-07-07 18:02:11 +02:00
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end
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2012-04-01 11:37:41 +02:00
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2014-12-05 23:18:52 +01:00
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--------------------------------------------------------------------------------
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function math.sign(x, tolerance)
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tolerance = tolerance or 0
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if x > tolerance then
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return 1
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elseif x < -tolerance then
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return -1
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end
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return 0
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end
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2019-03-05 10:11:21 +01:00
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--------------------------------------------------------------------------------
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function math.factorial(x)
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assert(x % 1 == 0 and x >= 0, "factorial expects a non-negative integer")
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if x >= 171 then
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-- 171! is greater than the biggest double, no need to calculate
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return math.huge
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end
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local v = 1
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for k = 2, x do
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v = v * k
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end
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return v
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end
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2021-04-02 00:18:58 +02:00
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function math.round(x)
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if x >= 0 then
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return math.floor(x + 0.5)
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end
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return math.ceil(x - 0.5)
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end
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2022-05-27 21:40:38 +02:00
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local formspec_escapes = {
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["\\"] = "\\\\",
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["["] = "\\[",
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["]"] = "\\]",
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[";"] = "\\;",
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2022-11-24 23:56:43 +01:00
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[","] = "\\,",
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["$"] = "\\$",
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2022-05-27 21:40:38 +02:00
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}
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2014-04-28 03:02:48 +02:00
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function core.formspec_escape(text)
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2022-05-27 21:40:38 +02:00
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-- Use explicit character set instead of dot here because it doubles the performance
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2022-11-24 23:56:43 +01:00
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return text and string.gsub(text, "[\\%[%];,$]", formspec_escapes)
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2013-08-14 20:21:39 +02:00
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end
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2013-11-10 19:37:45 +01:00
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2024-03-31 20:24:27 +02:00
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local hypertext_escapes = {
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["\\"] = "\\\\",
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["<"] = "\\<",
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[">"] = "\\>",
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}
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function core.hypertext_escape(text)
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return text and text:gsub("[\\<>]", hypertext_escapes)
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end
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2017-09-11 16:25:20 +02:00
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function core.wrap_text(text, max_length, as_table)
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local result = {}
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local line = {}
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if #text <= max_length then
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return as_table and {text} or text
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2013-11-10 19:37:45 +01:00
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end
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2014-06-19 18:17:35 +02:00
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2022-05-27 21:40:38 +02:00
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local line_length = 0
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for word in text:gmatch("%S+") do
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if line_length > 0 and line_length + #word + 1 >= max_length then
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2017-09-11 16:25:20 +02:00
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-- word wouldn't fit on current line, move to next line
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2022-05-27 21:40:38 +02:00
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table.insert(result, table.concat(line, " "))
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line = {word}
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line_length = #word
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else
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table.insert(line, word)
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line_length = line_length + 1 + #word
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2013-11-10 19:37:45 +01:00
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end
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end
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2014-06-19 18:17:35 +02:00
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2022-05-27 21:40:38 +02:00
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table.insert(result, table.concat(line, " "))
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return as_table and result or table.concat(result, "\n")
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2013-11-10 19:37:45 +01:00
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end
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2013-11-05 08:11:35 +01:00
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--------------------------------------------------------------------------------
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2014-04-28 03:02:48 +02:00
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if INIT == "game" then
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2014-12-12 07:21:29 +01:00
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local dirs1 = {9, 18, 7, 12}
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local dirs2 = {20, 23, 22, 21}
|
2013-11-05 08:11:35 +01:00
|
|
|
|
2014-04-28 03:02:48 +02:00
|
|
|
function core.rotate_and_place(itemstack, placer, pointed_thing,
|
2018-03-29 21:44:13 +02:00
|
|
|
infinitestacks, orient_flags, prevent_after_place)
|
2013-11-07 04:09:06 +01:00
|
|
|
orient_flags = orient_flags or {}
|
2013-11-05 08:11:35 +01:00
|
|
|
|
2014-04-28 03:02:48 +02:00
|
|
|
local unode = core.get_node_or_nil(pointed_thing.under)
|
2014-01-07 02:31:49 +01:00
|
|
|
if not unode then
|
|
|
|
return
|
|
|
|
end
|
2014-04-28 03:02:48 +02:00
|
|
|
local undef = core.registered_nodes[unode.name]
|
2020-05-13 13:57:05 +02:00
|
|
|
local sneaking = placer and placer:get_player_control().sneak
|
|
|
|
if undef and undef.on_rightclick and not sneaking then
|
2017-11-21 20:21:52 +01:00
|
|
|
return undef.on_rightclick(pointed_thing.under, unode, placer,
|
2014-01-11 17:23:28 +01:00
|
|
|
itemstack, pointed_thing)
|
2014-01-07 02:31:49 +01:00
|
|
|
end
|
2017-09-21 21:52:52 +02:00
|
|
|
local fdir = placer and core.dir_to_facedir(placer:get_look_dir()) or 0
|
2014-01-07 02:31:49 +01:00
|
|
|
|
|
|
|
local above = pointed_thing.above
|
|
|
|
local under = pointed_thing.under
|
|
|
|
local iswall = (above.y == under.y)
|
|
|
|
local isceiling = not iswall and (above.y < under.y)
|
2013-11-05 08:11:35 +01:00
|
|
|
|
2014-01-07 02:31:49 +01:00
|
|
|
if undef and undef.buildable_to then
|
|
|
|
iswall = false
|
|
|
|
end
|
2013-11-05 08:11:35 +01:00
|
|
|
|
2014-01-07 02:31:49 +01:00
|
|
|
if orient_flags.force_floor then
|
|
|
|
iswall = false
|
|
|
|
isceiling = false
|
|
|
|
elseif orient_flags.force_ceiling then
|
|
|
|
iswall = false
|
|
|
|
isceiling = true
|
|
|
|
elseif orient_flags.force_wall then
|
|
|
|
iswall = true
|
|
|
|
isceiling = false
|
|
|
|
elseif orient_flags.invert_wall then
|
|
|
|
iswall = not iswall
|
|
|
|
end
|
2013-11-05 08:11:35 +01:00
|
|
|
|
2017-11-21 20:21:52 +01:00
|
|
|
local param2 = fdir
|
2014-01-07 02:31:49 +01:00
|
|
|
if iswall then
|
2017-11-21 20:21:52 +01:00
|
|
|
param2 = dirs1[fdir + 1]
|
2014-01-07 02:31:49 +01:00
|
|
|
elseif isceiling then
|
|
|
|
if orient_flags.force_facedir then
|
2018-09-23 22:06:51 +02:00
|
|
|
param2 = 20
|
2014-01-07 02:31:49 +01:00
|
|
|
else
|
2017-11-21 20:21:52 +01:00
|
|
|
param2 = dirs2[fdir + 1]
|
2013-11-05 08:11:35 +01:00
|
|
|
end
|
2014-01-07 02:31:49 +01:00
|
|
|
else -- place right side up
|
|
|
|
if orient_flags.force_facedir then
|
2017-11-21 20:21:52 +01:00
|
|
|
param2 = 0
|
2014-01-07 02:31:49 +01:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2017-11-21 20:21:52 +01:00
|
|
|
local old_itemstack = ItemStack(itemstack)
|
2019-08-06 20:30:18 +02:00
|
|
|
local new_itemstack = core.item_place_node(itemstack, placer,
|
|
|
|
pointed_thing, param2, prevent_after_place)
|
2017-11-21 20:21:52 +01:00
|
|
|
return infinitestacks and old_itemstack or new_itemstack
|
2013-11-05 08:11:35 +01:00
|
|
|
end
|
2013-11-07 22:20:04 +01:00
|
|
|
|
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
--Wrapper for rotate_and_place() to check for sneak and assume Creative mode
|
|
|
|
--implies infinite stacks when performing a 6d rotation.
|
|
|
|
--------------------------------------------------------------------------------
|
2014-04-28 03:02:48 +02:00
|
|
|
core.rotate_node = function(itemstack, placer, pointed_thing)
|
2017-09-21 21:52:52 +02:00
|
|
|
local name = placer and placer:get_player_name() or ""
|
|
|
|
local invert_wall = placer and placer:get_player_control().sneak or false
|
2019-10-13 15:32:39 +02:00
|
|
|
return core.rotate_and_place(itemstack, placer, pointed_thing,
|
2020-05-26 02:11:19 +02:00
|
|
|
core.is_creative_enabled(name),
|
|
|
|
{invert_wall = invert_wall}, true)
|
2013-11-07 22:20:04 +01:00
|
|
|
end
|
2013-11-05 08:11:35 +01:00
|
|
|
end
|
|
|
|
|
2013-08-23 12:24:11 +02:00
|
|
|
--------------------------------------------------------------------------------
|
2014-04-28 03:02:48 +02:00
|
|
|
function core.explode_table_event(evt)
|
2013-08-23 12:24:11 +02:00
|
|
|
if evt ~= nil then
|
|
|
|
local parts = evt:split(":")
|
|
|
|
if #parts == 3 then
|
|
|
|
local t = parts[1]:trim()
|
|
|
|
local r = tonumber(parts[2]:trim())
|
|
|
|
local c = tonumber(parts[3]:trim())
|
2014-12-12 02:10:19 +01:00
|
|
|
if type(r) == "number" and type(c) == "number"
|
|
|
|
and t ~= "INV" then
|
2013-08-23 12:24:11 +02:00
|
|
|
return {type=t, row=r, column=c}
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
return {type="INV", row=0, column=0}
|
|
|
|
end
|
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
2014-04-28 03:02:48 +02:00
|
|
|
function core.explode_textlist_event(evt)
|
2013-08-23 12:24:11 +02:00
|
|
|
if evt ~= nil then
|
|
|
|
local parts = evt:split(":")
|
|
|
|
if #parts == 2 then
|
|
|
|
local t = parts[1]:trim()
|
|
|
|
local r = tonumber(parts[2]:trim())
|
|
|
|
if type(r) == "number" and t ~= "INV" then
|
|
|
|
return {type=t, index=r}
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
return {type="INV", index=0}
|
|
|
|
end
|
|
|
|
|
2014-06-19 18:17:35 +02:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
function core.explode_scrollbar_event(evt)
|
|
|
|
local retval = core.explode_textlist_event(evt)
|
|
|
|
|
|
|
|
retval.value = retval.index
|
|
|
|
retval.index = nil
|
|
|
|
|
|
|
|
return retval
|
|
|
|
end
|
|
|
|
|
2015-02-27 20:51:55 +01:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
function core.rgba(r, g, b, a)
|
|
|
|
return a and string.format("#%02X%02X%02X%02X", r, g, b, a) or
|
|
|
|
string.format("#%02X%02X%02X", r, g, b)
|
|
|
|
end
|
|
|
|
|
2014-06-19 18:17:35 +02:00
|
|
|
--------------------------------------------------------------------------------
|
2015-01-16 00:03:43 +01:00
|
|
|
function core.pos_to_string(pos, decimal_places)
|
|
|
|
local x = pos.x
|
|
|
|
local y = pos.y
|
|
|
|
local z = pos.z
|
|
|
|
if decimal_places ~= nil then
|
|
|
|
x = string.format("%." .. decimal_places .. "f", x)
|
|
|
|
y = string.format("%." .. decimal_places .. "f", y)
|
|
|
|
z = string.format("%." .. decimal_places .. "f", z)
|
|
|
|
end
|
|
|
|
return "(" .. x .. "," .. y .. "," .. z .. ")"
|
2014-04-28 03:02:48 +02:00
|
|
|
end
|
|
|
|
|
2015-01-16 00:03:43 +01:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
function core.string_to_pos(value)
|
|
|
|
if value == nil then
|
|
|
|
return nil
|
|
|
|
end
|
|
|
|
|
2022-05-22 16:28:24 +02:00
|
|
|
value = value:match("^%((.-)%)$") or value -- strip parentheses
|
|
|
|
|
|
|
|
local x, y, z = value:trim():match("^([%d.-]+)[,%s]%s*([%d.-]+)[,%s]%s*([%d.-]+)$")
|
2021-06-04 21:22:33 +02:00
|
|
|
if x and y and z then
|
|
|
|
x = tonumber(x)
|
|
|
|
y = tonumber(y)
|
|
|
|
z = tonumber(z)
|
|
|
|
return vector.new(x, y, z)
|
2015-01-16 00:03:43 +01:00
|
|
|
end
|
2022-05-22 16:28:24 +02:00
|
|
|
|
2015-01-16 00:03:43 +01:00
|
|
|
return nil
|
|
|
|
end
|
|
|
|
|
|
|
|
|
2015-09-23 06:31:45 +02:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
2022-05-22 16:28:24 +02:00
|
|
|
do
|
|
|
|
local rel_num_cap = "(~?-?%d*%.?%d*)" -- may be overly permissive as this will be tonumber'ed anyways
|
|
|
|
local num_delim = "[,%s]%s*"
|
|
|
|
local pattern = "^" .. table.concat({rel_num_cap, rel_num_cap, rel_num_cap}, num_delim) .. "$"
|
|
|
|
|
|
|
|
local function parse_area_string(pos, relative_to)
|
|
|
|
local pp = {}
|
|
|
|
pp.x, pp.y, pp.z = pos:trim():match(pattern)
|
|
|
|
return core.parse_coordinates(pp.x, pp.y, pp.z, relative_to)
|
2015-09-23 06:31:45 +02:00
|
|
|
end
|
|
|
|
|
2022-05-22 16:28:24 +02:00
|
|
|
function core.string_to_area(value, relative_to)
|
|
|
|
local p1, p2 = value:match("^%((.-)%)%s*%((.-)%)$")
|
|
|
|
if not p1 then
|
|
|
|
return
|
|
|
|
end
|
2015-09-23 06:31:45 +02:00
|
|
|
|
2022-05-22 16:28:24 +02:00
|
|
|
p1 = parse_area_string(p1, relative_to)
|
|
|
|
p2 = parse_area_string(p2, relative_to)
|
2015-09-23 06:31:45 +02:00
|
|
|
|
2022-05-22 16:28:24 +02:00
|
|
|
if p1 == nil or p2 == nil then
|
|
|
|
return
|
|
|
|
end
|
2015-09-23 06:31:45 +02:00
|
|
|
|
2022-05-22 16:28:24 +02:00
|
|
|
return p1, p2
|
|
|
|
end
|
2015-09-23 06:31:45 +02:00
|
|
|
end
|
|
|
|
|
2014-10-04 19:23:15 +02:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
function table.copy(t, seen)
|
|
|
|
local n = {}
|
|
|
|
seen = seen or {}
|
|
|
|
seen[t] = n
|
|
|
|
for k, v in pairs(t) do
|
2015-02-12 22:03:24 +01:00
|
|
|
n[(type(k) == "table" and (seen[k] or table.copy(k, seen))) or k] =
|
|
|
|
(type(v) == "table" and (seen[v] or table.copy(v, seen))) or v
|
2014-10-04 19:23:15 +02:00
|
|
|
end
|
|
|
|
return n
|
|
|
|
end
|
2018-04-17 15:54:50 +02:00
|
|
|
|
|
|
|
|
|
|
|
function table.insert_all(t, other)
|
2024-04-05 13:00:34 +02:00
|
|
|
if table.move then -- LuaJIT
|
|
|
|
return table.move(other, 1, #other, #t + 1, t)
|
|
|
|
end
|
2018-04-17 15:54:50 +02:00
|
|
|
for i=1, #other do
|
|
|
|
t[#t + 1] = other[i]
|
|
|
|
end
|
|
|
|
return t
|
|
|
|
end
|
|
|
|
|
|
|
|
|
2020-01-04 15:44:48 +01:00
|
|
|
function table.key_value_swap(t)
|
|
|
|
local ti = {}
|
|
|
|
for k,v in pairs(t) do
|
|
|
|
ti[v] = k
|
|
|
|
end
|
|
|
|
return ti
|
|
|
|
end
|
|
|
|
|
|
|
|
|
2020-02-01 16:09:45 +01:00
|
|
|
function table.shuffle(t, from, to, random)
|
|
|
|
from = from or 1
|
|
|
|
to = to or #t
|
|
|
|
random = random or math.random
|
|
|
|
local n = to - from + 1
|
|
|
|
while n > 1 do
|
|
|
|
local r = from + n-1
|
|
|
|
local l = from + random(0, n-1)
|
|
|
|
t[l], t[r] = t[r], t[l]
|
|
|
|
n = n-1
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
|
2013-07-16 21:03:57 +02:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
-- mainmenu only functions
|
|
|
|
--------------------------------------------------------------------------------
|
2021-09-19 17:55:01 +02:00
|
|
|
if core.gettext then -- for client and mainmenu
|
2015-02-17 01:37:14 +01:00
|
|
|
function fgettext_ne(text, ...)
|
2014-04-28 03:02:48 +02:00
|
|
|
text = core.gettext(text)
|
2013-08-14 19:22:23 +02:00
|
|
|
local arg = {n=select('#', ...), ...}
|
|
|
|
if arg.n >= 1 then
|
|
|
|
-- Insert positional parameters ($1, $2, ...)
|
2014-12-12 02:10:19 +01:00
|
|
|
local result = ''
|
|
|
|
local pos = 1
|
2013-08-14 19:22:23 +02:00
|
|
|
while pos <= text:len() do
|
2014-12-12 02:10:19 +01:00
|
|
|
local newpos = text:find('[$]', pos)
|
2013-08-14 19:22:23 +02:00
|
|
|
if newpos == nil then
|
|
|
|
result = result .. text:sub(pos)
|
|
|
|
pos = text:len() + 1
|
|
|
|
else
|
2014-12-12 02:10:19 +01:00
|
|
|
local paramindex =
|
|
|
|
tonumber(text:sub(newpos+1, newpos+1))
|
|
|
|
result = result .. text:sub(pos, newpos-1)
|
|
|
|
.. tostring(arg[paramindex])
|
2013-08-14 19:22:23 +02:00
|
|
|
pos = newpos + 2
|
|
|
|
end
|
|
|
|
end
|
|
|
|
text = result
|
|
|
|
end
|
2015-02-17 01:37:14 +01:00
|
|
|
return text
|
|
|
|
end
|
|
|
|
|
|
|
|
function fgettext(text, ...)
|
|
|
|
return core.formspec_escape(fgettext_ne(text, ...))
|
2013-07-16 21:03:57 +02:00
|
|
|
end
|
|
|
|
end
|
2017-03-17 19:20:13 +01:00
|
|
|
|
2017-03-28 21:55:39 +02:00
|
|
|
local ESCAPE_CHAR = string.char(0x1b)
|
|
|
|
|
2017-06-09 21:39:25 +02:00
|
|
|
function core.get_color_escape_sequence(color)
|
|
|
|
return ESCAPE_CHAR .. "(c@" .. color .. ")"
|
|
|
|
end
|
2017-03-17 19:20:13 +01:00
|
|
|
|
2017-06-09 21:39:25 +02:00
|
|
|
function core.get_background_escape_sequence(color)
|
|
|
|
return ESCAPE_CHAR .. "(b@" .. color .. ")"
|
|
|
|
end
|
2017-03-24 08:36:29 +01:00
|
|
|
|
2017-06-09 21:39:25 +02:00
|
|
|
function core.colorize(color, message)
|
|
|
|
local lines = tostring(message):split("\n", true)
|
|
|
|
local color_code = core.get_color_escape_sequence(color)
|
2017-03-24 08:36:29 +01:00
|
|
|
|
2017-06-09 21:39:25 +02:00
|
|
|
for i, line in ipairs(lines) do
|
|
|
|
lines[i] = color_code .. line
|
2017-03-17 19:20:13 +01:00
|
|
|
end
|
|
|
|
|
2017-06-09 21:39:25 +02:00
|
|
|
return table.concat(lines, "\n") .. core.get_color_escape_sequence("#ffffff")
|
2017-03-17 19:20:13 +01:00
|
|
|
end
|
2017-03-28 21:55:39 +02:00
|
|
|
|
2017-06-09 21:39:25 +02:00
|
|
|
|
2017-03-28 21:55:39 +02:00
|
|
|
function core.strip_foreground_colors(str)
|
|
|
|
return (str:gsub(ESCAPE_CHAR .. "%(c@[^)]+%)", ""))
|
|
|
|
end
|
|
|
|
|
|
|
|
function core.strip_background_colors(str)
|
|
|
|
return (str:gsub(ESCAPE_CHAR .. "%(b@[^)]+%)", ""))
|
|
|
|
end
|
|
|
|
|
|
|
|
function core.strip_colors(str)
|
|
|
|
return (str:gsub(ESCAPE_CHAR .. "%([bc]@[^)]+%)", ""))
|
|
|
|
end
|
2017-04-01 16:50:53 +02:00
|
|
|
|
2017-01-31 18:05:03 +01:00
|
|
|
function core.translate(textdomain, str, ...)
|
|
|
|
local start_seq
|
|
|
|
if textdomain == "" then
|
|
|
|
start_seq = ESCAPE_CHAR .. "T"
|
|
|
|
else
|
|
|
|
start_seq = ESCAPE_CHAR .. "(T@" .. textdomain .. ")"
|
|
|
|
end
|
|
|
|
local arg = {n=select('#', ...), ...}
|
|
|
|
local end_seq = ESCAPE_CHAR .. "E"
|
|
|
|
local arg_index = 1
|
|
|
|
local translated = str:gsub("@(.)", function(matched)
|
|
|
|
local c = string.byte(matched)
|
|
|
|
if string.byte("1") <= c and c <= string.byte("9") then
|
|
|
|
local a = c - string.byte("0")
|
|
|
|
if a ~= arg_index then
|
|
|
|
error("Escape sequences in string given to core.translate " ..
|
|
|
|
"are not in the correct order: got @" .. matched ..
|
|
|
|
"but expected @" .. tostring(arg_index))
|
|
|
|
end
|
|
|
|
if a > arg.n then
|
|
|
|
error("Not enough arguments provided to core.translate")
|
|
|
|
end
|
|
|
|
arg_index = arg_index + 1
|
|
|
|
return ESCAPE_CHAR .. "F" .. arg[a] .. ESCAPE_CHAR .. "E"
|
2017-08-26 09:43:08 +02:00
|
|
|
elseif matched == "n" then
|
|
|
|
return "\n"
|
2017-01-31 18:05:03 +01:00
|
|
|
else
|
|
|
|
return matched
|
|
|
|
end
|
|
|
|
end)
|
|
|
|
if arg_index < arg.n + 1 then
|
|
|
|
error("Too many arguments provided to core.translate")
|
|
|
|
end
|
|
|
|
return start_seq .. translated .. end_seq
|
|
|
|
end
|
|
|
|
|
|
|
|
function core.get_translator(textdomain)
|
|
|
|
return function(str, ...) return core.translate(textdomain or "", str, ...) end
|
|
|
|
end
|
|
|
|
|
2017-04-01 16:50:53 +02:00
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
-- Returns the exact coordinate of a pointed surface
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
function core.pointed_thing_to_face_pos(placer, pointed_thing)
|
2018-05-16 21:49:46 +02:00
|
|
|
-- Avoid crash in some situations when player is inside a node, causing
|
|
|
|
-- 'above' to equal 'under'.
|
|
|
|
if vector.equals(pointed_thing.above, pointed_thing.under) then
|
|
|
|
return pointed_thing.under
|
|
|
|
end
|
|
|
|
|
2017-12-09 14:30:26 +01:00
|
|
|
local eye_height = placer:get_properties().eye_height
|
2017-04-01 16:50:53 +02:00
|
|
|
local eye_offset_first = placer:get_eye_offset()
|
|
|
|
local node_pos = pointed_thing.under
|
|
|
|
local camera_pos = placer:get_pos()
|
|
|
|
local pos_off = vector.multiply(
|
|
|
|
vector.subtract(pointed_thing.above, node_pos), 0.5)
|
|
|
|
local look_dir = placer:get_look_dir()
|
|
|
|
local offset, nc
|
|
|
|
local oc = {}
|
|
|
|
|
|
|
|
for c, v in pairs(pos_off) do
|
2017-04-13 13:58:34 +02:00
|
|
|
if nc or v == 0 then
|
2017-04-01 16:50:53 +02:00
|
|
|
oc[#oc + 1] = c
|
|
|
|
else
|
|
|
|
offset = v
|
|
|
|
nc = c
|
|
|
|
end
|
|
|
|
end
|
2017-04-13 13:58:34 +02:00
|
|
|
|
2017-04-01 16:50:53 +02:00
|
|
|
local fine_pos = {[nc] = node_pos[nc] + offset}
|
2017-12-09 14:30:26 +01:00
|
|
|
camera_pos.y = camera_pos.y + eye_height + eye_offset_first.y / 10
|
2017-04-01 16:50:53 +02:00
|
|
|
local f = (node_pos[nc] + offset - camera_pos[nc]) / look_dir[nc]
|
|
|
|
|
|
|
|
for i = 1, #oc do
|
|
|
|
fine_pos[oc[i]] = camera_pos[oc[i]] + look_dir[oc[i]] * f
|
|
|
|
end
|
|
|
|
return fine_pos
|
|
|
|
end
|
2017-06-07 09:09:06 +02:00
|
|
|
|
|
|
|
function core.string_to_privs(str, delim)
|
|
|
|
assert(type(str) == "string")
|
|
|
|
delim = delim or ','
|
|
|
|
local privs = {}
|
|
|
|
for _, priv in pairs(string.split(str, delim)) do
|
|
|
|
privs[priv:trim()] = true
|
|
|
|
end
|
|
|
|
return privs
|
|
|
|
end
|
|
|
|
|
|
|
|
function core.privs_to_string(privs, delim)
|
|
|
|
assert(type(privs) == "table")
|
|
|
|
delim = delim or ','
|
|
|
|
local list = {}
|
|
|
|
for priv, bool in pairs(privs) do
|
|
|
|
if bool then
|
|
|
|
list[#list + 1] = priv
|
|
|
|
end
|
|
|
|
end
|
|
|
|
return table.concat(list, delim)
|
|
|
|
end
|
2020-12-24 14:48:05 +01:00
|
|
|
|
|
|
|
function core.is_nan(number)
|
|
|
|
return number ~= number
|
|
|
|
end
|
2022-05-22 16:28:24 +02:00
|
|
|
|
|
|
|
--[[ Helper function for parsing an optionally relative number
|
|
|
|
of a chat command parameter, using the chat command tilde notation.
|
|
|
|
|
|
|
|
Parameters:
|
|
|
|
* arg: String snippet containing the number; possible values:
|
|
|
|
* "<number>": return as number
|
|
|
|
* "~<number>": return relative_to + <number>
|
|
|
|
* "~": return relative_to
|
|
|
|
* Anything else will return `nil`
|
|
|
|
* relative_to: Number to which the `arg` number might be relative to
|
|
|
|
|
|
|
|
Returns:
|
|
|
|
A number or `nil`, depending on `arg.
|
|
|
|
|
|
|
|
Examples:
|
|
|
|
* `core.parse_relative_number("5", 10)` returns 5
|
|
|
|
* `core.parse_relative_number("~5", 10)` returns 15
|
|
|
|
* `core.parse_relative_number("~", 10)` returns 10
|
|
|
|
]]
|
|
|
|
function core.parse_relative_number(arg, relative_to)
|
|
|
|
if not arg then
|
|
|
|
return nil
|
|
|
|
elseif arg == "~" then
|
|
|
|
return relative_to
|
|
|
|
elseif string.sub(arg, 1, 1) == "~" then
|
|
|
|
local number = tonumber(string.sub(arg, 2))
|
|
|
|
if not number then
|
|
|
|
return nil
|
|
|
|
end
|
|
|
|
if core.is_nan(number) or number == math.huge or number == -math.huge then
|
|
|
|
return nil
|
|
|
|
end
|
|
|
|
return relative_to + number
|
|
|
|
else
|
|
|
|
local number = tonumber(arg)
|
|
|
|
if core.is_nan(number) or number == math.huge or number == -math.huge then
|
|
|
|
return nil
|
|
|
|
end
|
|
|
|
return number
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
--[[ Helper function to parse coordinates that might be relative
|
|
|
|
to another position; supports chat command tilde notation.
|
|
|
|
Intended to be used in chat command parameter parsing.
|
|
|
|
|
|
|
|
Parameters:
|
|
|
|
* x, y, z: Parsed x, y, and z coordinates as strings
|
|
|
|
* relative_to: Position to which to compare the position
|
|
|
|
|
|
|
|
Syntax of x, y and z:
|
|
|
|
* "<number>": return as number
|
|
|
|
* "~<number>": return <number> + player position on this axis
|
|
|
|
* "~": return player position on this axis
|
|
|
|
|
|
|
|
Returns: a vector or nil for invalid input or if player does not exist
|
|
|
|
]]
|
|
|
|
function core.parse_coordinates(x, y, z, relative_to)
|
|
|
|
if not relative_to then
|
|
|
|
x, y, z = tonumber(x), tonumber(y), tonumber(z)
|
|
|
|
return x and y and z and { x = x, y = y, z = z }
|
|
|
|
end
|
|
|
|
local rx = core.parse_relative_number(x, relative_to.x)
|
|
|
|
local ry = core.parse_relative_number(y, relative_to.y)
|
|
|
|
local rz = core.parse_relative_number(z, relative_to.z)
|
|
|
|
return rx and ry and rz and { x = rx, y = ry, z = rz }
|
|
|
|
end
|