local player = game.Players.LocalPlayer
local playerGui = player:WaitForChild("PlayerGui")

-- Remove old GUI if exists
if playerGui:FindFirstChild("SmallButtonGui") then
    playerGui.SmallButtonGui:Destroy()
end

-- Create ScreenGui
local screenGui = Instance.new("ScreenGui")
screenGui.Name = "SmallButtonGui"
screenGui.ResetOnSpawn = false
screenGui.Parent = playerGui

-- Create the Desyncer button
local button = Instance.new("TextButton")
button.Name = "DesyncerButton"
button.Text = "Desyncer: OFF"
button.Size = UDim2.new(0, 140, 0, 50)  -- Slightly wider for text
button.Position = UDim2.new(0.5, -70, 0.5, -25)
button.BackgroundColor3 = Color3.fromRGB(200, 50, 50)  -- Red when OFF
button.TextColor3 = Color3.fromRGB(255, 255, 255)
button.Font = Enum.Font.GothamBold
button.TextSize = 22
button.Parent = screenGui

-- Rounded corners
local corner = Instance.new("UICorner")
corner.CornerRadius = UDim.new(0, 12)
corner.Parent = button

-- Hover effect
button.MouseEnter:Connect(function()
    if button.Text == "Desyncer: OFF" then
        button.BackgroundColor3 = Color3.fromRGB(220, 70, 70)
    else
        button.BackgroundColor3 = Color3.fromRGB(80, 220, 80)
    end
end)

button.MouseLeave:Connect(function()
    if button.Text == "Desyncer: OFF" then
        button.BackgroundColor3 = Color3.fromRGB(200, 50, 50)
    else
        button.BackgroundColor3 = Color3.fromRGB(50, 200, 50)
    end
end)

-- === TOGGLE STATE ===
local isActive = false

-- === DESYNC CODE ===
local FFlags = {
    GameNetPVHeaderRotationalVelocityZeroCutoffExponent = -5000,
    LargeReplicatorWrite5 = true,
    LargeReplicatorEnabled9 = true,
    AngularVelociryLimit = 360,
    TimestepArbiterVelocityCriteriaThresholdTwoDt = 2147483646,
    S2PhysicsSenderRate = 15000,
    DisableDPIScale = true,
    MaxDataPacketPerSend = 2147483647,
    PhysicsSenderMaxBandwidthBps = 20000,
    TimestepArbiterHumanoidLinearVelThreshold = 21,
    MaxMissedWorldStepsRemembered = -2147483648,
    PlayerHumanoidPropertyUpdateRestrict = true,
    SimDefaultHumanoidTimestepMultiplier = 0,
    StreamJobNOUVolumeLengthCap = 2147483647,
    DebugSendDistInSteps = -2147483648,
    GameNetDontSendRedundantNumTimes = 1,
    CheckPVLinearVelocityIntegrateVsDeltaPositionThresholdPercent = 1,
    CheckPVDifferencesForInterpolationMinVelThresholdStudsPerSecHundredth = 1,
    LargeReplicatorSerializeRead3 = true,
    ReplicationFocusNouExtentsSizeCutoffForPauseStuds = 2147483647,
    CheckPVCachedVelThresholdPercent = 10,
    CheckPVDifferencesForInterpolationMinRotVelThresholdRadsPerSecHundredth = 1,
    GameNetDontSendRedundantDeltaPositionMillionth = 1,
    InterpolationFrameVelocityThresholdMillionth = 5,
    StreamJobNOUVolumeCap = 2147483647,
    InterpolationFrameRotVelocityThresholdMillionth = 5,
    CheckPVCachedRotVelThresholdPercent = 10,
    WorldStepMax = 30,
    InterpolationFramePositionThresholdMillionth = 5,
    TimestepArbiterHumanoidTurningVelThreshold = 1,
    SimOwnedNOUCountThresholdMillionth = 2147483647,
    GameNetPVHeaderLinearVelocityZeroCutoffExponent = -5000,
    NextGenReplicatorEnabledWrite4 = true,
    TimestepArbiterOmegaThou = 1073741823,
    MaxAcceptableUpdateDelay = 1,
    LargeReplicatorSerializeWrite4 = true
}

local function respawnar(plr)
    local char = plr.Character
    local hum = char and char:FindFirstChildWhichIsA("Humanoid")
    if hum then
        hum:ChangeState(Enum.HumanoidStateType.Dead)
    end
    if char then
        char:ClearAllChildren()
    end
    local newChar = Instance.new("Model")
    newChar.Parent = workspace
    plr.Character = newChar
    task.wait()
    plr.Character = char
    newChar:Destroy()
end

local function activateDesync()
    for name, value in pairs(FFlags) do
        pcall(function()
            setfflag(tostring(name), tostring(value))
        end)
    end
    respawnar(player)
end

-- === IMPROVED DRAGGABLE + CLICK WITHOUT ACCIDENTAL TRIGGER ===
local dragging = false
local dragStart
local startPos
local clickThreshold = 6  -- Pixels

local function updateInput(input)
    local delta = input.Position - dragStart
    button.Position = UDim2.new(startPos.X.Scale, startPos.X.Offset + delta.X, startPos.Y.Scale, startPos.Y.Offset + delta.Y)
end

button.InputBegan:Connect(function(input)
    if input.UserInputType == Enum.UserInputType.MouseButton1 or input.UserInputType == Enum.UserInputType.Touch then
        dragging = true
        dragStart = input.Position
        startPos = button.Position

        local connection
        connection = input.Changed:Connect(function()
            if input.UserInputState == Enum.UserInputState.End then
                local delta = input.Position - dragStart
                local distance = math.sqrt(delta.X^2 + delta.Y^2)

                if distance <= clickThreshold then
                    -- Real click → Toggle state
                    isActive = not isActive

                    if isActive then
                        button.Text = "Desyncer: ON"
                        button.BackgroundColor3 = Color3.fromRGB(50, 200, 50)  -- Green when ON
                        activateDesync()
                        print("Desyncer: ON")
                    else
                        button.Text = "Desyncer: OFF"
                        button.BackgroundColor3 = Color3.fromRGB(200, 50, 50)  -- Red when OFF
                        print("Desyncer: OFF")
                    end
                end

                dragging = false
                connection:Disconnect()
            end
        end)
    end
end)

button.InputChanged:Connect(function(input)
    if dragging and (input.UserInputType == Enum.UserInputType.MouseMovement or input.UserInputType == Enum.UserInputType.Touch) then
        updateInput(input)
    end
end)

game:GetService("UserInputService").InputChanged:Connect(function(input)
    if dragging and (input.UserInputType == Enum.UserInputType.MouseMovement or input.UserInputType == Enum.UserInputType.Touch) then
        updateInput(input)
    end
end)

print("Desyncer toggle button loaded! Click to turn ON/OFF.")