How do i make it so if somebody leaves they can't join back in that specific server

Help and Feedback Scripting Support
#1

i am wondering how to do it it’s for a game

#2
  1. Create a table of players who joined the server
  2. When player joins, check if they are in that table
  3. If they are kick them; if not, add them to the table
#3

This is just a basic idea:

local joined = {}

game.Players.PlayerAdded:Connect(function(Plr)
	task.wait(1)
	
	if table.find(joined, Plr) == nil then
		table.insert(joined, Plr)
	else
		Plr:Kick("You have already joined this server. Please join a new one.")
	end
end)
#4

You would probably want to save a table of JobIds that the player has been in inside a DataStore and check all of them against the server the player is joining.

#5 
local PlayersJoined = {}

game:GetService("Players").PlayerAdded:Connect(function(player)
	if table.find(PlayersJoined, player) == nil then
		table.insert(PlayersJoined, player)
	else
		player:Kick("you already joined this server")
	end
end)
#6

i don’t think i would need a data store cause once everybody leaves the server, the server deletes itself

#7

Thats not what I meant. I mean every player has a list of servers they have joined saved, not every server have a list of players that have joined.

#8

that didn’t work i don’t know what could be wrong

#9

Is there a error or something ?

#10

nope, there are no errors i don’t know what it is

#11

How are you testing it? On studio? Because you would need to test it on an actual game with at least 2 players on the server (since the server gets destroyed after last player leaves)

#12

yeah im testing it in a real server with my alt account

#13

If you’re having an issue with the PlayerAdded function not firing when you first join into the server you could try this:

local joined = {}
-------

local functions = {
	
	["Plr_ADDED"] = function(Plr)
		task.wait(1)

		if table.find(joined, Plr) == nil then
			table.insert(joined, Plr)
		else
			Plr:Kick("You have already joined this server. Please join a new one.")
		end
	end,
	
	--add more here:
}


game.Players.PlayerAdded:Connect(function(Plr)
	functions["Plr_ADDED"](Plr)
end)
------
task.wait(1)

if #game.Players:GetChildren() <= 0 then
	repeat
		wait()
	until #game.Players:GetChildren() > 0
end

for i,Plr in pairs(game.Players:GetChildren()) do
	functions["Plr_ADDED"](Plr)
end
#14

Oh sorry I meant to put .Name/.userId not the player instance

#15 
local PlayersJoined = {}

game:GetService("Players").PlayerAdded:Connect(function(player)
	--player:Kick("exited")
	if table.find(PlayersJoined, player) == nil then
		table.insert(PlayersJoined, player.UserId)
	else
		player:Kick("you already joined this server")
	end
end)

This is better, I thought I put .UserId earlier

#16

ok ill try it!!!

#17 
local Joined = {}
game.Players.PlayerAdded:Connect(function(Player)
	if Joined[Player.UserId] then Player:Kick("You have already joined this server") return end
	Joined[Player.UserId] = true
end)
#18

still didn’t work no errors i put my name into test if it works and it didn’t kick me

local PlayersJoined = {
"CookieTheSoda"
}
print(PlayersJoined)
game:GetService("Players").PlayerAdded:Connect(function(player)
	--player:Kick("exited")
	if table.find(PlayersJoined, player) == nil then
		table.insert(PlayersJoined, player.UserId)
	else
		player:Kick("you already joined this server")
	end
end)
#19

had to fix up the script a litte for anybody wondering what the script is it’s

local PlayersJoined = {}

print(PlayersJoined)
game:GetService("Players").PlayerAdded:Connect(function(player)
	--player:Kick("exited")
	print(player.Name)
	if table.find(PlayersJoined, player.Name) == nil then
		print("player not found")
		table.insert(PlayersJoined, player.Name)
	else
		player:Kick("you already joined this server")
	end
end)
1 Like
#20

Haha sorry I am a little tired, I peeped I only put .UserId on only one place instead of two. But glad you got it to work!