local lp = game:GetService("Players").LocalPlayer
local char = lp.Character or lp.CharacterAdded:Wait()
local root = char:WaitForChild("HumanoidRootPart")
local hum = char:WaitForChild("Humanoid")
local cam = workspace.CurrentCamera
local rs = game:GetService("RunService")
local uis = game:GetService("UserInputService")

local fly = false
local speed = 2

rs.Stepped:Connect(function()
	if fly and char then
		-- noclip
		for _, v in pairs(char:GetDescendants()) do
			if v:IsA("BasePart") then
				v.CanCollide = false
			end
		end

		-- anti drift
		root.Velocity = Vector3.new(0, 0, 0)

		local dir = Vector3.new(0,0,0)
		
		if uis:IsKeyDown(Enum.KeyCode.W) then
			dir = dir + cam.CFrame.LookVector
		end
		if uis:IsKeyDown(Enum.KeyCode.S) then
			dir = dir - cam.CFrame.LookVector
		end
		if uis:IsKeyDown(Enum.KeyCode.A) then
			dir = dir - cam.CFrame.RightVector
		end
		if uis:IsKeyDown(Enum.KeyCode.D) then
			dir = dir + cam.CFrame.RightVector
		end

		if dir.Magnitude > 0 then
			root.CFrame = root.CFrame + (dir * speed)
		end
	end
end)

uis.InputBegan:Connect(function(io, typing)
	if typing then return end
	
	if io.KeyCode == Enum.KeyCode.Two then
		fly = true
		hum.PlatformStand = true
	elseif io.KeyCode == Enum.KeyCode.Nine then
		fly = false
		hum.PlatformStand = false
		
		for _, v in pairs(char:GetDescendants()) do
			if v:IsA("BasePart") then
				v.CanCollide = true
			end
		end
	end
end)