fly script

-- The following code should be in a local script.
-- Only works on PC, not xbox or mobile. I do not have devices to test on.
-- Call the start fly function AFTER the character exists to fly. The function does not run if there is no character.

local lastSpace = 0;
local speed = 50 -- This is the fly speed. Change it to whatever you like. The variable can be changed while running

local c
local h
local bv
local bav
local cam
local flying
local p = game.Players.LocalPlayer
local buttons = {W = false, S = false, A = false, D = false, Moving = false}

local startFly = function () -- Call this function to begin flying
	if not p.Character or not p.Character.Head or flying then return end
	c = p.Character
	h = c.Humanoid
	h.PlatformStand = true
	cam = workspace:WaitForChild('Camera')
	bv = Instance.new("BodyVelocity")
	bav = Instance.new("BodyAngularVelocity")
	bv.Velocity, bv.MaxForce, bv.P = Vector3.new(0, 0, 0), Vector3.new(10000, 10000, 10000), 1000
	bav.AngularVelocity, bav.MaxTorque, bav.P = Vector3.new(0, 0, 0), Vector3.new(10000, 10000, 10000), 1000
	bv.Parent = c.Head
	bav.Parent = c.Head
	flying = true
	h.Died:connect(function() flying = false end)
end

local endFly = function () -- Call this function to stop flying
	if not p.Character or not flying then return end
	h.PlatformStand = false
	bv:Destroy()
	bav:Destroy()
	flying = false
end

game:GetService("UserInputService").InputBegan:connect(function (input, GPE)
	if GPE then return end
	for i, e in pairs(buttons) do
		if i ~= "Moving" and input.KeyCode == Enum.KeyCode[i] then
			buttons[i] = true
			buttons.Moving = true
		end
	end
	print(time()-lastSpace)
	if(input.KeyCode == Enum.KeyCode.Space)then
		if(time()-lastSpace <= .25)then
			if(not flying)then startFly() else endFly() end
		end
		lastSpace = time()
	end
end)

game:GetService("UserInputService").InputEnded:connect(function (input, GPE)
	if GPE then return end
	local a = false
	for i, e in pairs(buttons) do
		if i ~= "Moving" then
			if input.KeyCode == Enum.KeyCode[i] then
				buttons[i] = false
			end
			if buttons[i] then a = true end
		end
	end
	buttons.Moving = a
end)

local setVec = function (vec)
	return vec * (speed / vec.Magnitude)
end

game:GetService("RunService").Heartbeat:connect(function (step) -- The actual fly function, called every frame
	if flying and c and c.PrimaryPart then
		local p = c.PrimaryPart.Position
		local cf = cam.CFrame
		local ax, ay, az = cf:toEulerAnglesXYZ()
		c:SetPrimaryPartCFrame(CFrame.new(p.x, p.y, p.z) * CFrame.Angles(ax, ay, az))
		if buttons.Moving then
			local t = Vector3.new()
			if buttons.W then t = t + (setVec(cf.lookVector)) end
			if buttons.S then t = t - (setVec(cf.lookVector)) end
			if buttons.A then t = t - (setVec(cf.rightVector)) end
			if buttons.D then t = t + (setVec(cf.rightVector)) end
			c:TranslateBy(t * step)
		end
	end
end)