Usernsme generator

 I made a script that can be used to generate untaken roblox names (It is scripted to get 4 char names).
I don't know if this works with exploits or not, I've been testing it in roblox studio (as a server script).
Note: It just alerts you in dev console that the name is not taken, it doesn't actually create the account for you.

There are some variables at the beginning you can set to change results (I don't know if the underscore variable works or not, lmao). I recommend keeping numbers enabled as no number-names are rare, haven't gotten any finds

After I finished I realized I could make a table with all possible four char combinations, rather than using a cache and a math.random() on a random index of a table full of characters, I'm gonna post this post and then try and work on that. Was running this for a while and all of a sudden 8char names start popping up, I made an oopsies somewhere, i think i added a fix but not sure if it works.

no bulli for how i script pls

https://developer.roblox.com/en-us/api-r...mNameAsync this is the roblox API that I use in the script



Cons (so far):

It is slow.
Sometimes the username is inappropriate and cannot be used, but will show up since there is no user with that name


Code:
players = game:GetService("Players");


underscoreOkay = true; -- change to true if you want an underscore visible in the username, false if you don't want them there', this may be broke, idk

numbersOkay = true; -- change to true if you want numbers visible in username, false if you dont want them there

nameLength = 4; -- 4 char usernames will be attempted to be generated (This value can be changed)


charTable = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"}; -- list of characters



if (underscoreOkay == true) then
table.insert(charTable, "_"); -- insert underscore for generation, there will be hard check in generation to make sure this can only be used once
end;

if (numbersOkay == true) then
for i = 0,9 do
table.insert(charTable, tostring(i)); -- insert each number into table for generation
end;
end;

local cache = {};


function generateRandom() -- this abomination made sense to me when i scripted it
local ret = ""; -- this will store the username

repeat wait() -- this nasty critter is needed so the nasty repeat doesnt crash us
local isDone = false;
for i = 1,nameLength do
local nextChar;
local underscoreAmount = 0;
local underscoreDone = false; -- this will help with underscore checks; if it is true, an underscore has already been used
repeat
wait(); -- this nasty critter is needed so the nasty repeat doesn't crash us
local isDoable = false;
nextChar = charTable[math.random(1, #charTable)];
if (underscoreAmount == 0 and nextChar == "_" and underscoreDone == true or nextChar == "_" and i ~= 1 or nextChar == "_" and i ~= nameLength) then -- if char position == last or first position and nextChar is underscore, of if underscore has been used once
-- I think I made logic error somewhere in these comparisons but it seems to work
underscoreAmount = 1;
underscoreDone = true;
else
isDoable = true;
end
until isDoable == true;
ret = ret .. nextChar; -- append the randomly generated character to the returning string.
end;

if (cache[ret] == nil and ret:len() == 4) then -- if the name has already been used in the generation, repeat the loopity loop
cache[ret] = true; -- it is now in the cache
isDone = true; -- end the loop
end
until isDone == true;

return ret;
end;


function checkPlayer(name)
local bet = "_";
local isPlayer = false;
local x, y = pcall(function()
bet = players:GetUserIdFromNameAsync(name);
end);

if (y == nil) then
isPlayer = true; -- there is no need to set it to false in an else statement as it is already false.
end;

return (isPlayer); -- return boolean of whether the username exists or not. If username exists, return true, if it does not, return false
end;

while wait() do -- will exe 100 times, will probably only give off like 5 results idk
local newName = generateRandom();
if (checkPlayer(newName) == false) then
print("Untaken name: " .. tostring(newName)); -- THIS WILL WARN THE USERNAME IF IT IS NOT TAKEN
end;
end;