How to create a global name system?

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#1

I wanted to create a system where the player could create his own name and if a name was already being used, an error message “this name is already being used” would appear, if that is possible how can I achieve this?

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#2

Is this across a single server or the entire game?

Either way, you would need to store a list of all of used names (use datastores to carry across servers).

Use table.find(nameList, name) to determine if the name has been used.

I would suggest storing these names formatted as string.lower() or string.upper() so the same names with different capitalization can’t be chosen.

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#3

It is in the entire game but how would I go about using table.find globally?

#4

Set a key in a datastore to the name. When a player tries to pick a name, use getasync() and check if it returns a true value. When a player picks a name, use setasync() and set that value to true

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#5

You would need to use datastores for this.

You can really do this multiple ways, but somehow store all of the used names, and before confirming a player’s name, reference the stored names to make sure it hasn’t been used.

I don’t personally know all of the ins and outs of datastores, but you can do what @ScriptideALT said, and save a boolean under a key, although I’m not sure if that’s a good practice or not (again, not the best with datastores). Instead of a list that you use table.find on, you can create a dictionary and do playerNames["MayorGnarwhal"] = true, which might be a bit more efficient.

Either way, you will be needing datastores.

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#6

The problem with your method is that in a large game, the table playernames will grow too large to run getasync() or setasync() on. It is better to store each name individually under seperate keys

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#7 
   local NameTable = {}
Event:Connect(function()
	local IsTaken = false
	local PlayerRequestName = (What they inputted)
	for i,v in pairs(NameTable) do
		if v == PlayerRequestName then
			IsTaken = true
		end
	end
	if IsTaken == true then
		--Tell them its taken
	else
		table.insert(NameTable, #NameTable+1, PlayerRequestName)
		--Do whats suppose to happen if its not taken (Insert the name into the table so no one can pick it.)
	end
end)
---Datastore not incorporated into the code / Basically a check the server for what you inputted. 
---Also, don't forget to run through the table to take non taken names out of the table.
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