---

local FLY_SPEED = 50       
local TOGGLE_KEY = "f"     

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

local localPlayer = Players.LocalPlayer
local character = localPlayer.Character or localPlayer.CharacterAdded:Wait()
local humanoidRootPart = character:WaitForChild("HumanoidRootPart")
local humanoid = character:WaitForChild("Humanoid")

local isFlying = false
local camera = workspace.CurrentCamera

local attachment = nil
local linearVelocity = nil
local alignOrientation = nil
local runConnection = nil

local function startFlying()
	if not humanoidRootPart or not humanoid then return end
	
	humanoid:ChangeState(Enum.HumanoidStateType.Physics)
	
	attachment = Instance.new("Attachment")
	attachment.Name = "FlyAttachment"
	attachment.Parent = humanoidRootPart
	
	linearVelocity = Instance.new("LinearVelocity")
	linearVelocity.Name = "FlyVelocity"
	linearVelocity.Attachment0 = attachment
	linearVelocity.MaxForce = math.huge
	linearVelocity.VectorVelocity = Vector3.new(0, 0, 0)
	linearVelocity.RelativeTo = Enum.ActuatorRelativeTo.World
	linearVelocity.Parent = humanoidRootPart
	
	alignOrientation = Instance.new("AlignOrientation")
	alignOrientation.Name = "FlyOrientation"
	alignOrientation.Attachment0 = attachment
	alignOrientation.MaxTorque = math.huge
	alignOrientation.Responsiveness = 20
	alignOrientation.Mode = Enum.OrientationMode.OneAttachment
	alignOrientation.CFrame = humanoidRootPart.CFrame
	alignOrientation.Parent = humanoidRootPart
	
	runConnection = RunService.RenderStepped:Connect(function()
		local moveDirection = Vector3.new(0, 0, 0)
		
		if UserInputService:IsKeyDown(Enum.KeyCode.W) then
			moveDirection = moveDirection + camera.CFrame.LookVector
		end
		if UserInputService:IsKeyDown(Enum.KeyCode.S) then
			moveDirection = moveDirection - camera.CFrame.LookVector
		end
		if UserInputService:IsKeyDown(Enum.KeyCode.A) then
			moveDirection = moveDirection - camera.CFrame.RightVector
		end
		if UserInputService:IsKeyDown(Enum.KeyCode.D) then
			moveDirection = moveDirection + camera.CFrame.RightVector
		end
		if UserInputService:IsKeyDown(Enum.KeyCode.Space) then
			moveDirection = moveDirection + Vector3.new(0, 1, 0)
		end
		if UserInputService:IsKeyDown(Enum.KeyCode.LeftShift) then
			moveDirection = moveDirection - Vector3.new(0, 1, 0)
		end
		
		if moveDirection.Magnitude > 0 then
			linearVelocity.VectorVelocity = moveDirection.Unit * FLY_SPEED
		else
			linearVelocity.VectorVelocity = Vector3.new(0, 0, 0)
		end
		
		alignOrientation.CFrame = camera.CFrame
	end)
end

local function stopFlying()
	isFlying = false
	
	if runConnection then
		runConnection:Disconnect()
		runConnection = nil
	end
	
	if linearVelocity then linearVelocity:Destroy() end
	if alignOrientation then alignOrientation:Destroy() end
	if attachment then attachment:Destroy() end
	
	if humanoid then
		humanoid:ChangeState(Enum.HumanoidStateType.GettingUp)
	end
end

UserInputService.InputBegan:Connect(function(input, gameProcessed)
	if gameProcessed then return end
	
	if input.KeyCode == Enum.KeyCode[TOGGLE_KEY:upper()] then
		isFlying = not isFlying
		if isFlying then
			startFlying()
		else
			stopFlying()
		end
	end
end)

localPlayer.CharacterAdded:Connect(function(newCharacter)
	stopFlying()
	character = newCharacter
	humanoidRootPart = character:WaitForChild("HumanoidRootPart")
	humanoid = character:WaitForChild("Humanoid")
end)