How to save Udim2

[Enferrujado_BR (Ferrugem_YT)]

I’m trying to save the size of a frame, but it’s not possible to save Udim2, how do I do it?

CLIENT:

SERVER:

ERROR:

[Recodetfort]

Hi. Datastores cannot store data types like these, so you need to use serialization. The solution for you could be to use these two functions. They can convert Udim2 to a table and vice versa.

function UDim2ToTable(value : UDim2) : {number}
	local x = value.X
	local y = value.Y
	return {x.Scale, x.Offset, y.Scale, y.Offset}
end

function TableToUDim2(value : {number}) : UDim2
	return UDim2.new(value[1], value[2], value[3], value[4])
end

Although, the best solution would be to use some serialization module. Like this.

[Ziffixture (Ziffix)]

Through serialization. Serialization is the process of reducing complex abstract data structures into the least amount of primitive information required to reconstruct (deserialize) the data structure. Roblox cannot save your UDim2 because it contains functions etc. The only relevant details are its offset and scale values on the X and Y axis. You can save them as a CSV (comma-separated values) string, which is the most memory efficient:

local function serializeUDim2CSV(udim2: UDim2): string
    local x = udim2.X
    local y = udim2.Y

    local values = {
        x.Scale, x.Offset,
        y.Scale, y.Offset,
    }

    return table.concat(values, ",")
end

local function deserializeUDim2CSV(csv: string): UDim2
    local values = string.split(csv, ",")
 
    return UDim2.new(table.unpack(values))
end

[Enferrujado_BR (Ferrugem_YT)]

How do you separate all 4 values at once and turn them into Udim2?

Call DESERIALIZE:

DESERIALIZE:

TABLE:

ERROR CODE:

[Ziffixture (Ziffix)]

You’re not supposed to use tables. CSV stands for comma-separated values, which is a string

[Enferrujado_BR (Ferrugem_YT)]

Can u do some example for my code?

[Ziffixture (Ziffix)]

You give the UDim2 to serializeUDim2CSV and it produces a string for you to save. You reconstruct the UDim2 with deserializeUDim2CSV by giving it the saved string and applying the UDim2 to your GUI

[Enferrujado_BR (Ferrugem_YT)]

yes but the saved string is inside of the table, i need to deserialize four times?

[metatablecatmaid (metatablecat)]

you people complicate things so much

Just pack it into an array of XScale, XOffset, YScale, YOffset

local udimTuple = {
  ud2.X.Scale,
  ud2.X.Offset,
  ud2.Y.Scale,
  ud2.Y.Offset
}

Then unpack it directly into the UDim2 constructor

UDim2.new(unpack(udimTuple))

If you’re trying to get a string, you should also consider HttpService.JSONEncode since that will give you a fairly good serialised string format from a table. Though I’m pretty sure DataStores will accept a table directly.

[Ziffixture (Ziffix)]

["Break"] = {
    ["Position"] = "0.568,0,0.663,0",
    ["Size"] = "0,100,0,100",
    -- ...
}

Your data should look like the above. If I understand your schema correctly, the serialization process would look like:

serializedGuis[gui.Name] = {
    Position = serializeUDim2CSV(gui.Position),
    Size = serializeUDim2CSV(gui.Size)
}

The deserialization process would look like:

for guiName, data in serializedGuis do
    local gui = -- Whatever you do here...

    gui.Position = deserializeUDim2CSV(data.Position)
    gui.Size = deserializeUDim2CSV(data.Size)
end