Random
The Random data type generates pseudorandom numbers and directions.
概要
方法
Returns a pseudorandom integer uniformly distributed over [min, max].
Returns a pseudorandom number uniformly distributed over [0, 1].
Returns a pseudorandom number uniformly distributed over [min, max].
Uniformly shuffles a table in-place.
Returns a unit vector with a pseudorandom direction.
Returns a new Random object with the same state as the original.
コンストラクタ
new
パラメータ
コードサンプル
local max = 2147483647 -- use a large integer
local seed = math.random(max)
local generator = Random.new(seed)方法
Shuffle
Uniformly shuffles the array part of tb in-place using NextInteger to pick indices. If there are any nil "holes" in the array part of the table, Shuffle throws an error, since shuffling could change the length.
The hash part of tb is ignored. No metamethods of tb are invoked.
The shuffle is defined to be a Fisher-Yates shuffle so the number of NextInteger calls is guaranteed to be consistent between engine versions for a given size of table.