-- Press T to toggle

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

if humanoid.RigType == Enum.HumanoidRigType.R15 then
    torso = character:WaitForChild("UpperTorso")
else
    torso = character:WaitForChild("Torso")
end

repeat wait() until torso and humanoid

local mouse = player:GetMouse()
repeat wait() until mouse

local flying = true
local deb = true
local ctrl = {f = 0, b = 0, l = 0, r = 0}
local lastctrl = {f = 0, b = 0, l = 0, r = 0}
local maxspeed = 500
local speed = 50

function Fly()
    local bg = Instance.new("BodyGyro", torso)
    bg.P = 9e4
    bg.maxTorque = Vector3.new(9e9, 9e9, 9e9)
    bg.cframe = torso.CFrame
    local bv = Instance.new("BodyVelocity", torso)
    bv.velocity = Vector3.new(0, 0.1, 0)
    bv.maxForce = Vector3.new(9e9, 9e9, 9e9)
    repeat wait()
        humanoid.PlatformStand = true
        if ctrl.l + ctrl.r ~= 0 or ctrl.f + ctrl.b ~= 0 then
            speed = speed + .5 + (speed / maxspeed)
            if speed > maxspeed then
                speed = maxspeed
            end
        elseif not (ctrl.l + ctrl.r ~= 0 or ctrl.f + ctrl.b ~= 0) and speed ~= 0 then
            speed = speed - 1
            if speed < 0 then
                speed = 0
            end
        end
        if (ctrl.l + ctrl.r) ~= 0 or (ctrl.f + ctrl.b) ~= 0 then
            bv.velocity = ((game.Workspace.CurrentCamera.CoordinateFrame.lookVector * (ctrl.f + ctrl.b)) + ((game.Workspace.CurrentCamera.CoordinateFrame * CFrame.new(ctrl.l + ctrl.r, (ctrl.f + ctrl.b) * .2, 0).p) - game.Workspace.CurrentCamera.CoordinateFrame.p)) * speed
            lastctrl = {f = ctrl.f, b = ctrl.b, l = ctrl.l, r = ctrl.r}
        elseif (ctrl.l + ctrl.r) == 0 and (ctrl.f + ctrl.b) == 0 and speed ~= 0 then
            bv.velocity = ((game.Workspace.CurrentCamera.CoordinateFrame.lookVector * (lastctrl.f + lastctrl.b)) + ((game.Workspace.CurrentCamera.CoordinateFrame * CFrame.new(lastctrl.l + lastctrl.r, (lastctrl.f + lastctrl.b) * .2, 0).p) - game.Workspace.CurrentCamera.CoordinateFrame.p)) * speed
        else
            bv.velocity = Vector3.new(0, 0.1, 0)
        end
        bg.cframe = game.Workspace.CurrentCamera.CoordinateFrame * CFrame.Angles(-math.rad((ctrl.f + ctrl.b) * 50 * speed / maxspeed), 0, 0)
    until not flying
    ctrl = {f = 0, b = 0, l = 0, r = 0}
    lastctrl = {f = 0, b = 0, l = 0, r = 0}
    speed = 0
    bg:Destroy()
    bv:Destroy()
    humanoid.PlatformStand = false
end

mouse.KeyDown:connect(function(key)
    if key:lower() == "t" then
        if flying then
            flying = false
        else
            flying = true
            Fly()
        end
    elseif key:lower() == "w" then
        ctrl.f = 1
    elseif key:lower() == "s" then
        ctrl.b = -1
    elseif key:lower() == "a" then
        ctrl.l = -1
    elseif key:lower() == "d" then
        ctrl.r = 1
    end
end)

mouse.KeyUp:connect(function(key)
    if key:lower() == "w" then
        ctrl.f = 0
    elseif key:lower() == "s" then
        ctrl.b = 0
    elseif key:lower() == "a" then
        ctrl.l = 0
    elseif key:lower() == "d" then
        ctrl.r = 0
    end
end)

Fly()