Slitherine

--snagged long time ago from https://github.com/rjstone/cmano-lua-helpers/blob/master/cmano_helpers.lua
--it doesn't help all that much but it's marginally better than just os.time in tight loops.
function  gKH:improvedRandomseed(quality)
    if quality == nil then quality=10 end
    -- os.time() removes dependency on how long the software has been running currently
    -- os.clock() provides miliseconds, unlike os.time()
    -- we "chain" this with previous math.random() output to retain any accumulated entropy
    -- and "stir" a little by repeating more than once, though not much because the execution time
    -- probably doesn't vary much between calls and spending too much time will be a waste unless we want
    -- to spend several seconds doing this.
    math.randomseed(os.time() + math.random(90071992547)) -- preserve some previous entropy if there was any
    for i = 1, quality do
        -- Retain some previous PRNG state while adding a little jitter entropy, but not much.
        -- Jitter entropy comes from thread preemption, interrupt handing, and stuff like that in the OS that is
        -- somewhat random. This means you might not get much if any on a powerful and calm system.
        -- If we had a higher precision clock with ns instead of just ms then that would be more helpful.
        math.randomseed(((os.clock() * 1000) % 1000) + math.random(900719925470000))
    end
end