-- ==============================
-- Robust Roblox Fly Script
-- ==============================

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

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

local flying = false
local flySpeed = 50

-- Key states
local keys = {W=false, A=false, S=false, D=false, Space=false, Shift=false}

-- Toggle fly with F
UserInputService.InputBegan:Connect(function(input, gameProcessed)
    if gameProcessed then return end
    if input.KeyCode == Enum.KeyCode.F then
        flying = not flying
        humanoid.PlatformStand = flying
    end
    if input.KeyCode == Enum.KeyCode.W then keys.W = true end
    if input.KeyCode == Enum.KeyCode.A then keys.A = true end
    if input.KeyCode == Enum.KeyCode.S then keys.S = true end
    if input.KeyCode == Enum.KeyCode.D then keys.D = true end
    if input.KeyCode == Enum.KeyCode.Space then keys.Space = true end
    if input.KeyCode == Enum.KeyCode.LeftShift then keys.Shift = true end
end)

UserInputService.InputEnded:Connect(function(input, gameProcessed)
    if input.KeyCode == Enum.KeyCode.W then keys.W = false end
    if input.KeyCode == Enum.KeyCode.A then keys.A = false end
    if input.KeyCode == Enum.KeyCode.S then keys.S = false end
    if input.KeyCode == Enum.KeyCode.D then keys.D = false end
    if input.KeyCode == Enum.KeyCode.Space then keys.Space = false end
    if input.KeyCode == Enum.KeyCode.LeftShift then keys.Shift = false end
end)

-- Fly loop
RunService.RenderStepped:Connect(function()
    if flying then
        local cam = workspace.CurrentCamera
        local moveDir = Vector3.new()
        
        if keys.W then moveDir = moveDir + cam.CFrame.LookVector end
        if keys.S then moveDir = moveDir - cam.CFrame.LookVector end
        if keys.A then moveDir = moveDir - cam.CFrame.RightVector end
        if keys.D then moveDir = moveDir + cam.CFrame.RightVector end
        if keys.Space then moveDir = moveDir + Vector3.new(0,1,0) end
        if keys.Shift then moveDir = moveDir - Vector3.new(0,1,0) end

        if moveDir.Magnitude > 0 then
            hrp.Velocity = moveDir.Unit * flySpeed
        else
            hrp.Velocity = Vector3.new(0,0,0)
        end
    end
end)