-- [ Watermark GUI ]
local Players = game:GetService("Players")
local player = Players.LocalPlayer
local PlayerGui = player:WaitForChild("PlayerGui")

local screenGui = Instance.new("ScreenGui")
screenGui.Name = "WatermarkGui"
screenGui.ResetOnSpawn = false
screenGui.IgnoreGuiInset = true
screenGui.ZIndexBehavior = Enum.ZIndexBehavior.Global
screenGui.Parent = PlayerGui

local label = Instance.new("TextLabel")
label.Size = UDim2.new(0.6, 0, 0.1, 0)
label.Position = UDim2.new(0.2, 0, 0.45, 0)
label.BackgroundTransparency = 1
label.Text = "Made by whatanwaza"
label.Font = Enum.Font.GothamBlack
label.TextScaled = true
label.TextColor3 = Color3.new(1, 1, 1)
label.TextStrokeTransparency = 0.5
label.TextTransparency = 0
label.ZIndex = 999999
label.Parent = screenGui

task.wait(3)
for i = 0, 1, 0.03 do
	label.TextTransparency = i
	label.TextStrokeTransparency = 0.5 + (i * 0.5)
	task.wait(0.03)
end
screenGui:Destroy()

-- [ Knife Script ]
local RunService = game:GetService("RunService")
local char = player.Character or player.CharacterAdded:Wait()
local rightArm = char:WaitForChild("Right Arm")
local mouse = player:GetMouse()

-- Create knife parts
local knife = Instance.new("Model")
knife.Name = "Knife"

local handle = Instance.new("Part")
handle.Name = "Handle"
handle.Size = Vector3.new(0.2, 0.6, 0.2)
handle.BrickColor = BrickColor.new("Really black")
handle.Material = Enum.Material.Metal
handle.CanCollide = false
handle.Massless = true
handle.Parent = knife

local blade = Instance.new("Part")
blade.Name = "Blade"
blade.Size = Vector3.new(0.1, 0.8, 0.05)
blade.BrickColor = BrickColor.new("Medium stone grey")
blade.Material = Enum.Material.Metal
blade.CanCollide = false
blade.Massless = true
blade.Parent = knife

local guard = Instance.new("Part")
guard.Name = "Guard"
guard.Size = Vector3.new(0.4, 0.1, 0.1)
guard.BrickColor = BrickColor.new("Dark stone grey")
guard.Material = Enum.Material.Metal
guard.CanCollide = false
guard.Massless = true
guard.Parent = knife

blade.CFrame = handle.CFrame * CFrame.new(0, 0.7, 0)
guard.CFrame = handle.CFrame * CFrame.new(0, 0, 0)

local function weldParts(part1, part2)
    local weld = Instance.new("WeldConstraint")
    weld.Part0 = part1
    weld.Part1 = part2
    weld.Parent = part1
end

weldParts(handle, blade)
weldParts(handle, guard)

knife.Parent = workspace
knife.PrimaryPart = handle

local function attachKnifeToArm()
    local weld = rightArm:FindFirstChild("KnifeWeld")
    if weld then weld:Destroy() end

    knife.Parent = char
    knife.PrimaryPart = handle

    local weld = Instance.new("Weld")
    weld.Name = "KnifeWeld"
    weld.Part0 = rightArm
    weld.Part1 = handle
    weld.C0 = CFrame.new(0, -0.5, -0.3) * CFrame.Angles(math.rad(-90), math.rad(180), 0)
    weld.Parent = rightArm

    for _, part in pairs(knife:GetChildren()) do
        if part:IsA("BasePart") then
            part.CanCollide = false
            part.Anchored = false
        end
    end
end

attachKnifeToArm()

local launched = false
local launchSpeed = 60
local originalCFrame

local flingConnection
local flingVictimAngularVelocity

local function spinAndFlingInsideTorso(rootPart, victimHumanoidRootPart)
    local spinSpeedY = 9000
    local spinSpeedX = 9000
    local startTime = tick()

    flingVictimAngularVelocity = Instance.new("BodyAngularVelocity")
    flingVictimAngularVelocity.MaxTorque = Vector3.new(1e6, 1e6, 1e6)
    flingVictimAngularVelocity.AngularVelocity = Vector3.new(50, 50, 50)
    flingVictimAngularVelocity.Parent = victimHumanoidRootPart

    flingConnection = RunService.Heartbeat:Connect(function()
        if not rootPart or not rootPart.Parent or not victimHumanoidRootPart or not victimHumanoidRootPart.Parent then
            flingConnection:Disconnect()
            flingVictimAngularVelocity:Destroy()
            flingConnection, flingVictimAngularVelocity = nil, nil
            return
        end

        local elapsed = tick() - startTime
        local spinY = CFrame.Angles(0, elapsed * spinSpeedY, 0)
        local spinX = CFrame.Angles(elapsed * spinSpeedX, 0, 0)
        rootPart.CFrame = victimHumanoidRootPart.CFrame * (spinY * spinX)
    end)
end

local function stopSpinAndFling()
    if flingConnection then flingConnection:Disconnect() end
    if flingVictimAngularVelocity then flingVictimAngularVelocity:Destroy() end
    flingConnection, flingVictimAngularVelocity = nil, nil
end

local function detachKnife()
    local weld = rightArm:FindFirstChild("KnifeWeld")
    if weld then weld:Destroy() end
    knife.Parent = workspace
end

local function launchKnife()
    if launched then return end
    launched = true

    detachKnife()

    local origin = handle.Position
    local targetPos = mouse.Hit.p
    local direction = (targetPos - origin).Unit

    handle.CFrame = CFrame.new(origin, origin + direction)

    for _, part in pairs(knife:GetChildren()) do
        if part:IsA("BasePart") then
            part.CanCollide = true
            part.Anchored = false
        end
    end

    originalCFrame = char.PrimaryPart and char.PrimaryPart.CFrame or nil

    local bodyVelocity = Instance.new("BodyVelocity")
    bodyVelocity.MaxForce = Vector3.new(1e5, 1e5, 1e5)
    bodyVelocity.Velocity = direction * launchSpeed
    bodyVelocity.Parent = handle

    local bodyAngularVelocity = Instance.new("BodyAngularVelocity")
    bodyAngularVelocity.MaxTorque = Vector3.new(1e5, 1e5, 1e5)
    bodyAngularVelocity.AngularVelocity = handle.CFrame.RightVector * 60
    bodyAngularVelocity.Parent = handle

    local connection
    connection = handle.Touched:Connect(function(hit)
        if not launched or not hit or not hit.Parent then return end
        if hit:IsDescendantOf(char) or hit:IsDescendantOf(knife) then return end

        bodyVelocity:Destroy()
        bodyAngularVelocity:Destroy()

        for _, part in pairs(knife:GetChildren()) do
            part.Anchored = true
            part.CanCollide = true
        end

        connection:Disconnect()

        local hitHumanoid = hit.Parent:FindFirstChildOfClass("Humanoid")
        local hitTorso = hit.Parent:FindFirstChild("Torso") or hit.Parent:FindFirstChild("UpperTorso")

        if hitHumanoid and hitTorso then
            for _, part in pairs(knife:GetChildren()) do
                part.Transparency = 1
            end

            local rootPart = char:FindFirstChild("HumanoidRootPart")
            local victimRoot = hit.Parent:FindFirstChild("HumanoidRootPart")
            if rootPart and victimRoot then
                rootPart.Anchored = false
                spinAndFlingInsideTorso(rootPart, victimRoot)
            end

            wait(4.5)
            stopSpinAndFling()

            if rootPart and originalCFrame then
                rootPart.CFrame = originalCFrame
            end

            for _, part in pairs(knife:GetChildren()) do
                part.Transparency = 0
            end

            attachKnifeToArm()
            launched = false
        else
            local pickupConnection
            pickupConnection = handle.Touched:Connect(function(toucher)
                if toucher.Parent == char then
                    pickupConnection:Disconnect()
                    for _, part in pairs(knife:GetChildren()) do
                        part.Anchored = false
                        part.CanCollide = false
                    end
                    attachKnifeToArm()
                    launched = false
                end
            end)
        end
    end)
end

mouse.Button1Down:Connect(function()
    if not launched then
        launchKnife()
    end
end)