local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Workspace = game:GetService("Workspace")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

local player = Players.LocalPlayer
local camera = Workspace.CurrentCamera

local remoteEvent = ReplicatedStorage:FindFirstChild("IKMovementEvent") or Instance.new("RemoteEvent")
remoteEvent.Name = "IKMovementEvent"
remoteEvent.Parent = ReplicatedStorage

local BASE_HEIGHT = 6
local HEIGHT_STEP = 0.1
local MOVE_STEP = 0.3
local ACTIVATION_KEY = Enum.UserInputType.MouseButton1

local isActive = false
local currentHeight = BASE_HEIGHT
local horizontalOffset = 0
local leftHandIK, attachment
local originalAttachmentPosition = Vector3.new()
local updateLoopConnection = nil

local function updateAttachmentPosition()
if updateLoopConnection then
updateLoopConnection:Disconnect()
updateLoopConnection = nil
end

updateLoopConnection = RunService.RenderStepped:Connect(function()
if not isActive or not attachment then
if updateLoopConnection then
updateLoopConnection:Disconnect()
updateLoopConnection = nil
end
return
end

local mousePos = UserInputService:GetMouseLocation()
local ray = camera:ViewportPointToRay(mousePos.X, mousePos.Y)
local t = (currentHeight - ray.Origin.Y) / ray.Direction.Y
local targetWorldPosition = ray.Origin + (ray.Direction * t)
targetWorldPosition = targetWorldPosition + (camera.CFrame.RightVector * horizontalOffset)
local localPosition = leftHandIK.CFrame:PointToObjectSpace(targetWorldPosition)
attachment.Position = localPosition
remoteEvent:FireServer({
position = targetWorldPosition,
height = currentHeight,
offset = horizontalOffset
})
end)
end

remoteEvent.OnClientEvent:Connect(function(sender, data)
if sender == player then return end

local character = sender.Character
if not character then return end

local theirLeftHandIK = character:FindFirstChild("LeftHandIK")
local theirAttachment = theirLeftHandIK and theirLeftHandIK:FindFirstChild("Attachment1")
local theirLeftArmIK = character:FindFirstChild("Left Arm") and character:FindFirstChild("Left Arm"):FindFirstChild("LeftArmIK")

if theirLeftHandIK and theirAttachment and theirLeftArmIK then
if data and data.position then
theirLeftArmIK.Enabled = true
local localPosition = theirLeftHandIK.CFrame:PointToObjectSpace(data.position)
theirAttachment.Position = localPosition
else
theirLeftArmIK.Enabled = false
theirAttachment.Position = Vector3.new()
end
end
end)

local function setup()
local character = player.Character or player.CharacterAdded:Wait()
local leftArm = character:WaitForChild("Left Arm")
local leftArmIK = leftArm:WaitForChild("LeftArmIK")

leftHandIK = character:WaitForChild("LeftHandIK")
attachment = leftHandIK:WaitForChild("Attachment1")
originalAttachmentPosition = attachment.Position

UserInputService.InputBegan:Connect(function(input)
if input.UserInputType == ACTIVATION_KEY then
if not isActive then
isActive = true
leftArmIK.Enabled = true
updateAttachmentPosition()
end
elseif input.KeyCode == Enum.KeyCode.C then
if isActive then
horizontalOffset = horizontalOffset + MOVE_STEP
end
elseif input.KeyCode == Enum.KeyCode.V then
if isActive then
horizontalOffset = horizontalOffset - MOVE_STEP
end
end
end)

UserInputService.InputEnded:Connect(function(input)

if input.UserInputType == ACTIVATION_KEY then
if isActive then
isActive = false
leftArmIK.Enabled = false
attachment.Position = originalAttachmentPosition
remoteEvent:FireServer({
position = character.CFrame.Position,
height = 0,
offset = 0
})
end
end
end)

UserInputService.InputChanged:Connect(function(input)
if isActive and input.UserInputType == Enum.UserInputType.MouseWheel then
currentHeight = currentHeight - input.Position.Z * HEIGHT_STEP
currentHeight = math.max(2, math.min(currentHeight, 10))
end
end)
end

if player.Character then
setup()
end
player.CharacterAdded:Connect(setup)