Scripting HelpersARCHIVE
A little piece of Roblox history. Preserved for everyone, one question at a time.Read about the archive →
All questions/Question #76200
✓ ANSWER ACCEPTED

WHY DOES THIS KEEP ERRORING? saying user data is unable to compare?

Asked 178 views1 answers
Part = script.Parent
BodyVelocity = Part.BodyVelocity
L = 'Touchpart'

Part.Touched:Connect(function(hit)
	 if hit:FindFirstChild('StringValue').Value == 'RevertValue' then
		Neg = hit:FindFirstChild('Negative')
		Pos = hit:FindFirstChild('Positive')
		if BodyVelocity.Velocity < Pos.Value then
			BodyVelocity.Velocity = Neg.Value
		elseif
			BodyVelocity.Velocity > Neg.Value then
				BodyVelocity.Velocity = Pos.Value
		end
		
	end
	
	
end)

it keeps saying 14:22:46.050 - Workspace.Part.Script:9: attempt to compare userdata with number

14:22:46.050 - Workspace.Part.Script:9: attempt to compare userdata with number

14:22:46.050 - Workspace.Part.Script:9: attempt to compare userdata with number

I don't get why and what a user data is and why its erroring any fix

Anonymous

1 answer

✓ Accepted answer

The Velocity property from the BodyVelocity object is a Vector3 userdata type. Userdata types include CFrame or BrickColor. I'm assuming that "Positive" is a NumberValue object, so technically you're comparing something that looks like:

if Vector3.new(0, 0, 0) < 123 then --example case

To fix this you could compare Positive.Value, and the other, to the read-only properties of the Vector3. So something like:

if BodyVelocity.Velocity.Y < Pos.Value then
	--run code if Y value is lower
elseif BodyVelocity.Velocity.Y > Pos.Value then
	--run code if Y value is greater
end

The top is just an example at what you're looking for. You do have access to the other immutable properties for a Vector3. You can see a list of them here.

####Let me know if you need something explained or I had missed anything.

AnonymousEdited Permalink

This discussion is preserved as it was. New answers, comments, and votes are closed.