Is it possible to predict math.random?

[dthecoolest]

@NoobcyHarlaw

Is it possible to get “internal entropy source” from a script in roblox studio?

No, the best you can do is overwrite it and set the seed. Then you can predict based on how many times the function is called what the random number will produced. You can do this using math.randomseed() or better Random.new(seed) which is localized into one variable and not global effecting all scripts.

Would be interesting to know if an Roblox engineer comes along and gives the info.

What is math.randomseed()

This question has been asked before, I recommend reading these threads for a better explanation. In simple terms, computers don’t have the ability to generate “real” random numbers, so they take seeds. [image] Seeds are randomized to make the computer give pseudo-randomness, even though it’s been predefined already. That’s why math.randomseed(tick()) generates a random seed and is used to mimic true randomness.

I also found these GDC talks to be pretty interesting if you want techniques to control this RNG:

Noise-Based RNG

Fun fact random prediction was used to hack into TF2 and generate free random crits:

how crit hacking was stopped in tf2 (& how crit hacking still kinda works today)