Tweening doesn't always fire

Help and Feedback Scripting Support
,
#1

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!

I’m currently trying to make a bullet trail, that tweens away after (I think) .2 seconds. Seems simple, and that’s what I thought until I ran into this:

It may be hard to see, but the tween is inconsistent, and happens on some clicks and not on others. In this example I was spam clicking to “simulate” a machine gun if I were to make this into one (for testing purposes).

I’ve tried quite a few things to fix this. I’ve lowered the time it takes to tween, I’ve moved the tween out of a function (thinking maybe that slows it down/breaks it) but I’m not sure what else to do, rather than ask for help here.

Here’s the important code!



	if raycastResult then
		print("Hit something")
		local hitpart = raycastResult.Instance
		print(hitpart.Name)
		
		
		
		local distance = (rayOrigin - raycastResult.Position).Magnitude

		p.Anchored = true
		p.CanCollide = false
		p.Transparency = .3
		p.Parent = game.Workspace
		p.Size = Vector3.new(0.1, 0.1, distance)
		p.CFrame = CFrame.lookAt(rayOrigin, raycastResult.Position)*CFrame.new(0, 0, -distance/2)
		Tween:Play()

		print("Finished")

		--CreateVisibleRay(true, rayOrigin, raycastResult, rayDirection, rayOrigin)
		
		if hitpart.Parent:FindFirstChild("Humanoid") then
			print("Found one!")
		else 
			print("No humanoid")
		end
		
	else
		--CreateVisibleRay(false, rayOrigin, raycastResult, rayDirection, rayOrigin)

		local distance = (rayOrigin - rayDirection).Magnitude

		p.Anchored = true
		p.CanCollide = false
		p.Transparency = .3
		p.Parent = game.Workspace
		p.Size = Vector3.new(0.1, 0.1, distance)
		p.CFrame = CFrame.lookAt(rayOrigin, rayDirection)*CFrame.new(0, 0, -distance/2)
		Tween:Play()

		print("Finished")
	end

for some context, I’m using a tool for activation, then a remote event to tell the server to do all of the stuff above (plus some unneeded code for this question).

Thanks in advanced if you can help!

2 Likes
#2

Are you using the same trail for the tween? Maybe the tween doesn’t finish before it is called again causing it to break. Consider making a new tween/part each time it’s fired?

1 Like
#4

I agree, if you try to apply more than one tween of the same property to a part then the tween breaks and might not move in the direction you want it to.
Read a bit about this here: TweenBase | Roblox Creator Documentation

1 Like
#5

Actually I think I left it out but here’s the variable


local p = instance.new("Part)

(Or something like that)

I took yours and @awesomefolsom 's advice and I have a function to check if the tween is done. if it is is does p:Destroy(), however I am still noticing that it’s inconsistent
(Less than before but still noticeable)

#6

Kind of confused about what you mean. Would you be comfortable sharing the code, or at least the part messing up?

1 Like
#7

Any errors in console?? and Tween isnt defined by anything or did i miss it?

1 Like
#8

Try this instead of using CFrame:

local Train = game.Workspace.Train
Train:TweenPosition(Vector3.new(-0.75, 0.5, -487.99), "In", "Back", 5, false)
1 Like
#9

:TweenPosition can only be used on GUI Objects like TextLabels or Frames.

2 Likes
#10

Here’s a better look into it @loror



-------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------
-- Creates a visible ray, duhhh

local function CreateVisibleRay (Resultornot, rayOrigin, raycastResult, rayDirection, rayOrigin)
	local p = Instance.new("Part")
	local Info = TweenInfo.new(1)
	local Tween = game:GetService("TweenService"):Create(p,Info,{Transparency=1})
			if Resultornot == true then
				local distance = (rayOrigin - raycastResult.Position).Magnitude
				
				p.Anchored = true
				p.CanCollide = false
				p.Transparency = .3
				p.Parent = game.Workspace
				p.Size = Vector3.new(0.1, 0.1, distance)
		p.CFrame = CFrame.lookAt(rayOrigin, raycastResult.Position)*CFrame.new(0, 0, -distance/2)
		
		Tween:Play()
		Tween.Completed:Connect(function(playbackState)
			print("Done")
			p:Destroy()
		end)

		
				print("Finished")
			else
				local distance = (rayOrigin - rayDirection).Magnitude
				
				p.Anchored = true
				p.CanCollide = false
				p.Transparency = .3
				p.Parent = game.Workspace
				p.Size = Vector3.new(0.1, 0.1, distance)
		p.CFrame = CFrame.lookAt(rayOrigin, rayDirection)*CFrame.new(0, 0, -distance/2)
	
		Tween:Play()
		Tween.Completed:Connect(function(playbackState)
			print("Done")
			p:Destroy()
		end)
				
				print("Finished")
			end
end



------------- some irrelevant code ------


--- the function that calls the tweening--
	
	if raycastResult then
		print("Hit something")
		local hitpart = raycastResult.Instance
		print(hitpart.Name)
		
		
		
	
		CreateVisibleRay(true, rayOrigin, raycastResult, rayDirection, rayOrigin)
		
		if hitpart.Parent:FindFirstChild("Humanoid") then
			print("Found one!")
		else 
			print("No humanoid")
		end
		
	else
		CreateVisibleRay(false, rayOrigin, raycastResult, rayDirection, rayOrigin)

	
	end

@Zach_DaQuack

Yeah, here’s the thing i’m just tweening the transparency as it’s a bullet trail

@JS_Coded

There were no errors, and also see the code above, I added the part where tween is defined. It was late so I accidentally forgot to include the important variables :man_facepalming: