Roblox HitBox Gui

local ScreenGui = Instance.new("ScreenGui")
local Frame = Instance.new("Frame")
local Num = Instance.new("TextBox")
local Plus = Instance.new("TextButton")
local Minus = Instance.new("TextButton")

ScreenGui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")
ScreenGui.ResetOnSpawn = false

Frame.Size = UDim2.new(0, 200, 0, 100)
Frame.Position = UDim2.new(0.5, -100, 0.5, -50)
Frame.BackgroundColor3 = Color3.fromRGB(50, 50, 50)
Frame.Parent = ScreenGui
Frame.Active = true
Frame.Draggable = true

Num.Size = UDim2.new(0.6, 0, 0.6, 0)
Num.Position = UDim2.new(0.2, 0, 0.3, 0)
Num.BackgroundColor3 = Color3.fromRGB(30, 30, 30)
Num.TextColor3 = Color3.new(1, 1, 1)
Num.TextScaled = true
Num.Font = Enum.Font.SourceSans
Num.Text = "•"
Num.ClearTextOnFocus = true
Num.Parent = Frame

Plus.Size = UDim2.new(0.2, 0, 0.6, 0)
Plus.Position = UDim2.new(0.8, 0, 0.3, 0)
Plus.BackgroundColor3 = Color3.fromRGB(70, 70, 70)
Plus.TextColor3 = Color3.new(1, 1, 1)
Plus.TextScaled = true
Plus.Font = Enum.Font.SourceSans
Plus.Text = "+"
Plus.Parent = Frame

Minus.Size = UDim2.new(0.2, 0, 0.6, 0)
Minus.Position = UDim2.new(0, 0, 0.3, 0)
Minus.BackgroundColor3 = Color3.fromRGB(70, 70, 70)
Minus.TextColor3 = Color3.new(1, 1, 1)
Minus.TextScaled = true
Minus.Font = Enum.Font.SourceSans
Minus.Text = "-"
Minus.Parent = Frame

local DefaultSize = 1
local character = game.Players.LocalPlayer.Character or game.Players.LocalPlayer.CharacterAdded:Wait()
local humanoidRootPart = character:WaitForChild("HumanoidRootPart", 10)
if humanoidRootPart then
    DefaultSize = humanoidRootPart.Size.X
end

local number = math.floor(DefaultSize)
local function UpdateNum()
    Num.Text = tostring(number)
end

local function Config()
    for _, player in next, game:GetService("Players"):GetPlayers() do
        if player.Name ~= game.Players.LocalPlayer.Name then
            pcall(function()
                local hrp = player.Character.HumanoidRootPart
                hrp.Size = Vector3.new(_G.HeadSize, _G.HeadSize, _G.HeadSize)
                hrp.Transparency = 0.4
                hrp.BrickColor = BrickColor.new("Black")
                hrp.Material = "Neon"
                hrp.CanCollide = false
            end)
        end
    end
end

local function DefaultConfig()
    for _, player in next, game:GetService("Players"):GetPlayers() do
        if player.Name ~= game.Players.LocalPlayer.Name then
            pcall(function()
                local hrp = player.Character.HumanoidRootPart
                hrp.Size = Vector3.new(DefaultSize, DefaultSize, DefaultSize)
                hrp.Transparency = 1
                hrp.BrickColor = BrickColor.new("Medium stone grey")
                hrp.Material = "Plastic"
                hrp.CanCollide = true
            end)
        end
    end
end

local function Credits() game:GetService("StarterGui"):SetCore("SendNotification", {
        Title = "HitBox Gui",
        Text = "Made By the_king.78",
        Duration = 12
    })
end

Plus.MouseButton1Click:Connect(function()
    number = number + 1
    UpdateNum()
    _G.HeadSize = number
    Config()
end)

Minus.MouseButton1Click:Connect(function()
    if number > 0 then
        number = number - 1
        UpdateNum()
        _G.HeadSize = number
        if number == 0 then
            DefaultConfig()
        else
            Config()
        end
    end
end)

Num.FocusLost:Connect(function(enterPressed)
    if enterPressed then
        local Value = tonumber(Num.Text)
        if Value and Value >= 0 then
            number = Value
            UpdateNum()
            _G.HeadSize = number
            if number == 0 then
                DefaultConfig()
            else
                Config()
            end
        else
            UpdateNum()
        end
    end
end)

_G.HeadSize = DefaultSize
_G.Disabled = true

game:GetService("RunService").RenderStepped:Connect(function()
    if _G.Disabled then
        if number > 0 then
            Config()
        else
            DefaultConfig()
        end
    end
end)

Credits()
UpdateNum()