Data things happening if I shutdown server

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#1

So basically, in my game I have things I want to happen with data incase I shutdown servers (using “Shutdown all servers” button). I tried using game:BindToClose(), but players seem to get kicked out before that function runs, resulting in my desired result not happening, since going through all players in the server results in no players being there at that point, making me unable to change data of players that were in that server.

Any solution as to what I could o with this?

#2

You can use a combination of PlayerRemoving and BindToClose

For example, do not let BindToClose return until all players are removed from the game, and the PlayerRemoving function has run.

However, BindToClose cannot keep the server open permanently, therefore you should probably Multithread the saving.

See this documentation for more details: https://create.roblox.com/docs/reference/engine/classes/DataModel#BindToClose

#3

To fruther expand on this, what I wish to achieve goes something like so:

servers shutdown pressed → servers know they’ll shutdown, proceed to flip a variable inside players data (said variable will let the next server they join know they came from a server that shut down, and act upon the data saved), along with setting some variables such as location, action state etc…

#4

My issue is that BindToClose runs after the players are already gone from the server, so my control variable doesn’t get flipped for them, since they’re not there anymore

#5

Inside the BindToClose you can alter the remaining the cached data I believe, or just flip a state/variable that your Data Post Processing function (i.e. the function right before it saves) will utilize when processing the players state/data.

If none of the above works, utilize the MessagingService as a last ditch effort to flip a variable, it will also announce the servers are shutting down soon, and then the data should save properly.

#6

Hmm, I’m not sure that’ll solve my problem hoewer…
Since by the time BindToClose runs, the server is already empty, which is the problem in the first place.

game:BindToClose(function() 
	closing = true  -- control variable that alters how playerleaving function behaves
	for i,v in game.Players:GetPlayers() do
		-- various changes to data because of server shutting down, these don't happen if player just normally leaves
	end	
end)

This is the code I have basically. Problem being game.Players:GetPlayers() returns nothing, since players were already all kicked out.

Is the only solution really making a custom shutdown system via messagingservice?

The closing variable also not working as intended, since the playerleaving functions all run before the BindToClose has a chance to flip it

#7

You could store UserIds while the server is running and then when the game closes you’ll still have the UserIds to save data with maybe.

local Players = game:GetService('Players')
local UserIdsInGame = {}

Players.PlayerAdded:Connect(function(player: Player)
	table.insert(UserIdsInGame, player.UserId)
end)

Players.PlayerRemoving:Connect(function(player: Player)
	local index = table.find(UserIdsInGame, player.UserId)
	if index then
		table.remove(UserIdsInGame, index)
	end
	-- perform data save here too
end)

game:BindToClose(function()
	for _, userId in pairs(UserIdsInGame) do
		-- save data with associated userid
	end
end)
#8

That could work for the custom data to be saved. Won’t work for altering the playerleaving behavior however… and that ones is pretty crucial for the ropes of my game, but I should be able to get around it.

I’ll give your solution a try

#9

I’ll give you the solution as what you said was partially what helped me resolve this.

I used a combination of what you suggested along with storing the player character(and dropping it along with data being released), as well as making the server hold the players data for 2 seconds after they leave. And some slight modifications in my logic of handling the modifications to data to fit the solution.