Viewmodel disappears

Help and Feedback Scripting Support
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#1
  1. What do you want to achieve?
    I wanted to add viewmodel bopping into my game, and I found a forum post and implemented into the game.

Forum post I used:

  1. What is the issue?
    Sometimes the viewmodel decides to go underneath the baseplate, nowhere near the player. And in the roblox player, the viewmodel bopping is greatly exaggerated.

How it looks in studio:
robloxapp-20231027-2059073.wmv (1.6 MB)

How it looks in the roblox player:
robloxapp-20231027-2100431.wmv (2.0 MB)

  1. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
    I tried changing some of the values. I don’t know any other viewmodel scripts that would work for my model.

After that, you should include more details if you have any. Try to make your topic as descriptive as possible, so that it’s easier for people to help you!

local ReplicatedStorage		    = game:GetService("ReplicatedStorage")
local UserInputService			= game:GetService("UserInputService")

local PlayerEvents				= ReplicatedStorage:WaitForChild("PlayerEvents")
local LookUpDown				= PlayerEvents:WaitForChild("LookUpDown")

local Player					= game.Players.LocalPlayer
local mouse 					= Player:GetMouse()
local Camera 					= workspace.CurrentCamera

local Arms 						= ReplicatedStorage:WaitForChild("FirstPersonArms"):Clone()
Arms.Humanoid.PlatformStand 	= true
Arms.Parent 					= Player

local ClientModules				= ReplicatedStorage:WaitForChild("ClientModules")
local SpringModule				= require(ClientModules:WaitForChild("SpringModule"))

local primaryPart: Part			= nil
local humanoid: Humanoid		= nil

local runDebounce				= false
local cameraOffset 				= CFrame.new(0, -1, 1.5)

local swaySpring				= SpringModule.new()
local bobSpring					= SpringModule.new()

local function Bob(addition)
	return math.sin(tick() * addition * 1.3) * 0.25
end

local function update()
	if runDebounce then
		return
	end
	
	runDebounce = true
	LookUpDown:FireServer(mouse.Hit.Position, Camera.CFrame.Position)
	
	task.wait(.1)
	runDebounce = false
end

local function setArmsToCam(dt: number)
	if not primaryPart then
		return
	end
	
	local Delta = UserInputService:GetMouseDelta()
	
	swaySpring:shove(Vector3.new(-Delta.X/500, Delta.Y/500, 0))
	bobSpring:shove(Vector3.new(Bob(3), Bob(6), Bob(3)) / 12 * (primaryPart.Velocity.Magnitude) / 12)
	
	local UpdatedSway = swaySpring:update(dt)
	local UpdatedBob = bobSpring:update(dt)
	
	local cameraCframe = (Camera.CFrame*cameraOffset)
	
	Arms:SetPrimaryPartCFrame(cameraCframe*
		CFrame.new(UpdatedSway.X, UpdatedSway.Y, 0)*
		CFrame.new(UpdatedBob.X, UpdatedBob.Y, 0)
	)
end

local function charAdded(char: Model)
	Arms.Parent = Camera
	update()

	humanoid = char:WaitForChild("Humanoid")
	primaryPart = char.PrimaryPart

	local lookConnection 		    = Camera:GetPropertyChangedSignal("CFrame"):Connect(update)

	humanoid.Died:Connect(function()
		lookConnection:Disconnect()
		Arms.Parent = Player
	end)
end

if Player.Character then
	charAdded(Player.Character)
end

Player.CharacterAdded:Connect(charAdded)
RunService.RenderStepped:Connect(setArmsToCam)

Here is the viewmodel that I’m using:
fpa.obj (16.4 KB)

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