704 lines
19 KiB
Lua
704 lines
19 KiB
Lua
-- Minetest: builtin/misc_helpers.lua
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--------------------------------------------------------------------------------
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function basic_dump(o)
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local tp = type(o)
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if tp == "number" then
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return tostring(o)
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elseif tp == "string" then
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return string.format("%q", o)
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elseif tp == "boolean" then
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return tostring(o)
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elseif tp == "nil" then
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return "nil"
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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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else
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return string.format("<%s>", tp)
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end
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end
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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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--------------------------------------------------------------------------------
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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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function dump2(o, name, dumped)
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name = name or "_"
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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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dumped = dumped or {}
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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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table.insert(t, dump2(k, keyStr, dumped))
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end
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else
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keyStr = basic_dump(k)
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end
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local vname = string.format("%s[%s]", name, keyStr)
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table.insert(t, dump2(v, vname, dumped))
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end
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return string.format("%s = {}\n%s", name, table.concat(t))
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end
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--------------------------------------------------------------------------------
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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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-- 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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-- 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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function dump(o, indent, nested, level)
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if type(o) ~= "table" then
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return basic_dump(o)
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end
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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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local t = {}
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local dumped_indexes = {}
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for i, v in ipairs(o) do
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table.insert(t, dump(v, indent, nested, level + 1))
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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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table.insert(t, k.." = "..v)
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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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local end_indent_str = "\n"..string.rep(indent, level - 1)
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return string.format("{%s%s%s}",
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indent_str,
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table.concat(t, ","..indent_str),
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end_indent_str)
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end
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return "{"..table.concat(t, ", ").."}"
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end
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--------------------------------------------------------------------------------
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-- Localize functions to avoid table lookups (better performance).
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local table_insert = table.insert
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local str_sub, str_find = string.sub, string.find
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function string.split(str, delim, include_empty, max_splits, sep_is_pattern)
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delim = delim or ","
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max_splits = max_splits or -1
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local items = {}
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local pos, len, seplen = 1, #str, #delim
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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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local np, npe = str_find(str, delim, pos, plain)
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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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end
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local s = str_sub(str, pos, np - 1)
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if include_empty or (s ~= "") then
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max_splits = max_splits - 1
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table_insert(items, s)
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end
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pos = npe + 1
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until (max_splits == 0) or (pos > (len + 1))
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return items
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end
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--------------------------------------------------------------------------------
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function file_exists(filename)
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local f = io.open(filename, "r")
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if f==nil then
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return false
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else
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f:close()
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return true
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end
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end
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--------------------------------------------------------------------------------
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function string:trim()
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return (self:gsub("^%s*(.-)%s*$", "%1"))
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end
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assert(string.trim("\n \t\tfoo bar\t ") == "foo bar")
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--------------------------------------------------------------------------------
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function math.hypot(x, y)
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local t
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x = math.abs(x)
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y = math.abs(y)
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t = math.min(x, y)
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x = math.max(x, y)
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if x == 0 then return 0 end
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t = t / x
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return x * math.sqrt(1 + t * t)
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end
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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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--------------------------------------------------------------------------------
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function get_last_folder(text,count)
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local parts = text:split(DIR_DELIM)
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if count == nil then
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return parts[#parts]
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end
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local retval = ""
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for i=1,count,1 do
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retval = retval .. parts[#parts - (count-i)] .. DIR_DELIM
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end
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return retval
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end
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--------------------------------------------------------------------------------
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function cleanup_path(temppath)
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local parts = temppath:split("-")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath .. "_"
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end
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temppath = temppath .. parts[i]
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end
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parts = temppath:split(".")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath .. "_"
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end
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temppath = temppath .. parts[i]
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end
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parts = temppath:split("'")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath .. ""
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end
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temppath = temppath .. parts[i]
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end
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parts = temppath:split(" ")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath
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end
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temppath = temppath .. parts[i]
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end
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return temppath
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end
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function multicraft.formspec_escape(text)
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if text ~= nil then
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text = string.gsub(text,"\\","\\\\")
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text = string.gsub(text,"%]","\\]")
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text = string.gsub(text,"%[","\\[")
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text = string.gsub(text,";","\\;")
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text = string.gsub(text,",","\\,")
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end
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return text
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end
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function multicraft.splittext(text,charlimit)
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local retval = {}
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local current_idx = 1
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local start,stop = string.find(text," ",current_idx)
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local nl_start,nl_stop = string.find(text,"\n",current_idx)
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local gotnewline = false
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if nl_start ~= nil and (start == nil or nl_start < start) then
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start = nl_start
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stop = nl_stop
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gotnewline = true
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end
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local last_line = ""
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while start ~= nil do
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if string.len(last_line) + (stop-start) > charlimit then
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table.insert(retval,last_line)
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last_line = ""
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end
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if last_line ~= "" then
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last_line = last_line .. " "
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end
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last_line = last_line .. string.sub(text,current_idx,stop -1)
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if gotnewline then
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table.insert(retval,last_line)
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last_line = ""
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gotnewline = false
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end
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current_idx = stop+1
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start,stop = string.find(text," ",current_idx)
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nl_start,nl_stop = string.find(text,"\n",current_idx)
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if nl_start ~= nil and (start == nil or nl_start < start) then
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start = nl_start
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stop = nl_stop
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gotnewline = true
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end
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end
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--add last part of text
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if string.len(last_line) + (string.len(text) - current_idx) > charlimit then
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table.insert(retval,last_line)
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table.insert(retval,string.sub(text,current_idx))
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else
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last_line = last_line .. " " .. string.sub(text,current_idx)
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table.insert(retval,last_line)
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end
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return retval
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end
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--------------------------------------------------------------------------------
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if INIT == "game" then
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local dirs1 = {9, 18, 7, 12}
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local dirs2 = {20, 23, 22, 21}
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function multicraft.rotate_and_place(itemstack, placer, pointed_thing,
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infinitestacks, orient_flags)
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orient_flags = orient_flags or {}
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local unode = multicraft.get_node_or_nil(pointed_thing.under)
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if not unode then
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return
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end
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local undef = multicraft.registered_nodes[unode.name]
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if undef and undef.on_rightclick then
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undef.on_rightclick(pointed_thing.under, unode, placer,
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itemstack, pointed_thing)
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return
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end
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local pitch = placer:get_look_pitch()
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local fdir = multicraft.dir_to_facedir(placer:get_look_dir())
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local wield_name = itemstack:get_name()
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local above = pointed_thing.above
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local under = pointed_thing.under
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local iswall = (above.y == under.y)
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local isceiling = not iswall and (above.y < under.y)
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local anode = multicraft.get_node_or_nil(above)
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if not anode then
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return
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end
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local pos = pointed_thing.above
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local node = anode
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if undef and undef.buildable_to then
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pos = pointed_thing.under
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node = unode
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iswall = false
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end
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if multicraft.is_protected(pos, placer:get_player_name()) then
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multicraft.record_protection_violation(pos,
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placer:get_player_name())
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return
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end
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local ndef = multicraft.registered_nodes[node.name]
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if not ndef or not ndef.buildable_to then
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return
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end
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if orient_flags.force_floor then
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iswall = false
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isceiling = false
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elseif orient_flags.force_ceiling then
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iswall = false
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isceiling = true
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elseif orient_flags.force_wall then
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iswall = true
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isceiling = false
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elseif orient_flags.invert_wall then
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iswall = not iswall
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end
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if iswall then
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multicraft.set_node(pos, {name = wield_name,
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param2 = dirs1[fdir+1]})
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elseif isceiling then
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if orient_flags.force_facedir then
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multicraft.set_node(pos, {name = wield_name,
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param2 = 20})
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else
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multicraft.set_node(pos, {name = wield_name,
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param2 = dirs2[fdir+1]})
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end
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else -- place right side up
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if orient_flags.force_facedir then
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multicraft.set_node(pos, {name = wield_name,
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param2 = 0})
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else
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multicraft.set_node(pos, {name = wield_name,
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param2 = fdir})
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end
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end
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if not infinitestacks then
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itemstack:take_item()
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return itemstack
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end
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end
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--------------------------------------------------------------------------------
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--Wrapper for rotate_and_place() to check for sneak and assume Creative mode
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--implies infinite stacks when performing a 6d rotation.
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--------------------------------------------------------------------------------
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multicraft.rotate_node = function(itemstack, placer, pointed_thing)
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multicraft.rotate_and_place(itemstack, placer, pointed_thing,
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multicraft.setting_getbool("creative_mode"),
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{invert_wall = placer:get_player_control().sneak})
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return itemstack
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end
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--------------------------------------------------------------------------------
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-- Function to make a copy of an existing node definition, to be used
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-- by mods that need to redefine some aspect of a node, but without
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-- them having to copy&paste the entire node definition.
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--------------------------------------------------------------------------------
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function multicraft.clone_node(name)
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node2={}
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node=multicraft.registered_nodes[name]
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for k,v in pairs(node) do
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node2[k]=v
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end
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return node2
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end
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end
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--------------------------------------------------------------------------------
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if multicraft then
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local dirs1 = { 9, 18, 7, 12 }
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local dirs2 = { 20, 23, 22, 21 }
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function multicraft.rotate_and_place(itemstack, placer, pointed_thing, infinitestacks, orient_flags)
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orient_flags = orient_flags or {}
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local node = multicraft.get_node(pointed_thing.under)
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if not multicraft.registered_nodes[node.name]
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or not multicraft.registered_nodes[node.name].on_rightclick then
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local above = pointed_thing.above
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local under = pointed_thing.under
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local pitch = placer:get_look_pitch()
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local pname = multicraft.get_node(under).name
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local node = multicraft.get_node(above)
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local fdir = multicraft.dir_to_facedir(placer:get_look_dir())
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local wield_name = itemstack:get_name()
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local reg_node = multicraft.registered_nodes[pname]
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if not reg_node or not reg_node.on_rightclick then
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local iswall = (above.x ~= under.x) or (above.z ~= under.z)
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local isceiling = (above.x == under.x) and (above.z == under.z)
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and (pitch > 0)
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local pos1 = above
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if reg_node and reg_node.buildable_to then
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pos1 = under
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iswall = false
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end
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reg_node = multicraft.registered_nodes[multicraft.get_node(pos1).name]
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if not reg_node or not reg_node.buildable_to then
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return
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end
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if orient_flags.force_floor then
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iswall = false
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isceiling = false
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elseif orient_flags.force_ceiling then
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iswall = false
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isceiling = true
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elseif orient_flags.force_wall then
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iswall = true
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isceiling = false
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elseif orient_flags.invert_wall then
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iswall = not iswall
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end
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if iswall then
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multicraft.add_node(pos1, {name = wield_name, param2 = dirs1[fdir+1] })
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elseif isceiling then
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if orient_flags.force_facedir then
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multicraft.add_node(pos1, {name = wield_name, param2 = 20 })
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else
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multicraft.add_node(pos1, {name = wield_name, param2 = dirs2[fdir+1] })
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end
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else -- place right side up
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if orient_flags.force_facedir then
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multicraft.add_node(pos1, {name = wield_name, param2 = 0 })
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else
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multicraft.add_node(pos1, {name = wield_name, param2 = fdir })
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end
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end
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if not infinitestacks then
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itemstack:take_item()
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return itemstack
|
|
end
|
|
end
|
|
else
|
|
multicraft.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
|
|
end
|
|
end
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
--Wrapper for rotate_and_place() to check for sneak and assume Creative mode
|
|
--implies infinite stacks when performing a 6d rotation.
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
multicraft.rotate_node = function(itemstack, placer, pointed_thing)
|
|
multicraft.rotate_and_place(itemstack, placer, pointed_thing,
|
|
multicraft.setting_getbool("creative_mode"),
|
|
{invert_wall = placer:get_player_control().sneak})
|
|
return itemstack
|
|
end
|
|
end
|
|
|
|
--------------------------------------------------------------------------------
|
|
function multicraft.explode_table_event(evt)
|
|
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())
|
|
if type(r) == "number" and type(c) == "number"
|
|
and t ~= "INV" then
|
|
return {type=t, row=r, column=c}
|
|
end
|
|
end
|
|
end
|
|
return {type="INV", row=0, column=0}
|
|
end
|
|
|
|
--------------------------------------------------------------------------------
|
|
function multicraft.explode_textlist_event(evt)
|
|
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
|
|
|
|
--------------------------------------------------------------------------------
|
|
function multicraft.explode_scrollbar_event(evt)
|
|
local retval = multicraft.explode_textlist_event(evt)
|
|
|
|
retval.value = retval.index
|
|
retval.index = nil
|
|
|
|
return retval
|
|
end
|
|
|
|
--------------------------------------------------------------------------------
|
|
function multicraft.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 .. ")"
|
|
end
|
|
|
|
--------------------------------------------------------------------------------
|
|
function multicraft.string_to_pos(value)
|
|
if value == nil then
|
|
return nil
|
|
end
|
|
|
|
local p = {}
|
|
p.x, p.y, p.z = string.match(value, "^([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
|
|
if p.x and p.y and p.z then
|
|
p.x = tonumber(p.x)
|
|
p.y = tonumber(p.y)
|
|
p.z = tonumber(p.z)
|
|
return p
|
|
end
|
|
local p = {}
|
|
p.x, p.y, p.z = string.match(value, "^%( *([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+) *%)$")
|
|
if p.x and p.y and p.z then
|
|
p.x = tonumber(p.x)
|
|
p.y = tonumber(p.y)
|
|
p.z = tonumber(p.z)
|
|
return p
|
|
end
|
|
return nil
|
|
end
|
|
|
|
assert(multicraft.string_to_pos("10.0, 5, -2").x == 10)
|
|
assert(multicraft.string_to_pos("( 10.0, 5, -2)").z == -2)
|
|
assert(multicraft.string_to_pos("asd, 5, -2)") == nil)
|
|
|
|
--------------------------------------------------------------------------------
|
|
function table.copy(t, seen)
|
|
local n = {}
|
|
seen = seen or {}
|
|
seen[t] = n
|
|
for k, v in pairs(t) do
|
|
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
|
|
end
|
|
return n
|
|
end
|
|
--------------------------------------------------------------------------------
|
|
-- mainmenu only functions
|
|
--------------------------------------------------------------------------------
|
|
if INIT == "mainmenu" then
|
|
function multicraft.get_game(index)
|
|
local games = game.get_games()
|
|
|
|
if index > 0 and index <= #games then
|
|
return games[index]
|
|
end
|
|
|
|
return nil
|
|
end
|
|
|
|
function fgettext_ne(text, ...)
|
|
text = multicraft.gettext(text)
|
|
local arg = {n=select('#', ...), ...}
|
|
if arg.n >= 1 then
|
|
-- Insert positional parameters ($1, $2, ...)
|
|
local result = ''
|
|
local pos = 1
|
|
while pos <= text:len() do
|
|
local newpos = text:find('[$]', pos)
|
|
if newpos == nil then
|
|
result = result .. text:sub(pos)
|
|
pos = text:len() + 1
|
|
else
|
|
local paramindex =
|
|
tonumber(text:sub(newpos+1, newpos+1))
|
|
result = result .. text:sub(pos, newpos-1)
|
|
.. tostring(arg[paramindex])
|
|
pos = newpos + 2
|
|
end
|
|
end
|
|
text = result
|
|
end
|
|
return text
|
|
end
|
|
|
|
function fgettext(text, ...)
|
|
return multicraft.formspec_escape(fgettext_ne(text, ...))
|
|
end
|
|
end
|