--// HITBOX CHANGER ADMIN GUI (READY TO USE)

if game.CoreGui:FindFirstChild("HitboxChanger") then
	game.CoreGui.HitboxChanger:Destroy()
end

local Players = game:GetService("Players")
local UIS = game:GetService("UserInputService")
local LocalPlayer = Players.LocalPlayer

-- GUI SETUP
local ScreenGui = Instance.new("ScreenGui", game.CoreGui)
ScreenGui.Name = "HitboxChanger"
ScreenGui.ResetOnSpawn = false

local Main = Instance.new("Frame", ScreenGui)
Main.Size = UDim2.new(0, 300, 0, 210)
Main.Position = UDim2.new(0.5, -150, 0.5, -105)
Main.BackgroundColor3 = Color3.fromRGB(25,25,25)
Main.BorderSizePixel = 0
Main.Active = true
Main.Draggable = true

-- TITLE
local Title = Instance.new("TextLabel", Main)
Title.Size = UDim2.new(1,0,0,30)
Title.BackgroundColor3 = Color3.fromRGB(35,35,35)
Title.Text = "Hitbox Changer"
Title.TextColor3 = Color3.new(1,1,1)
Title.Font = Enum.Font.SourceSansBold
Title.TextSize = 18

-- INFO TEXT
local Info = Instance.new("TextLabel", Main)
Info.Position = UDim2.new(0,0,0,35)
Info.Size = UDim2.new(1,0,0,20)
Info.BackgroundTransparency = 1
Info.Text = "Hitbox value must be 50 or less"
Info.TextColor3 = Color3.fromRGB(200,200,200)
Info.Font = Enum.Font.SourceSans
Info.TextSize = 14

-- SLIDER BG
local SliderBG = Instance.new("Frame", Main)
SliderBG.Position = UDim2.new(0,20,0,70)
SliderBG.Size = UDim2.new(1,-40,0,10)
SliderBG.BackgroundColor3 = Color3.fromRGB(60,60,60)
SliderBG.BorderSizePixel = 0

local SliderFill = Instance.new("Frame", SliderBG)
SliderFill.Size = UDim2.new(0,0,1,0)
SliderFill.BackgroundColor3 = Color3.fromRGB(0,170,255)
SliderFill.BorderSizePixel = 0

-- VALUE TEXT
local ValueText = Instance.new("TextLabel", Main)
ValueText.Position = UDim2.new(0,0,0,90)
ValueText.Size = UDim2.new(1,0,0,25)
ValueText.BackgroundTransparency = 1
ValueText.Text = "Hitbox Size: 0"
ValueText.TextColor3 = Color3.new(1,1,1)
ValueText.Font = Enum.Font.SourceSansBold
ValueText.TextSize = 16

-- TOGGLE BUTTON
local Toggle = Instance.new("TextButton", Main)
Toggle.Position = UDim2.new(0.25,0,0,130)
Toggle.Size = UDim2.new(0.5,0,0,30)
Toggle.BackgroundColor3 = Color3.fromRGB(150,0,0)
Toggle.Text = "OFF"
Toggle.TextColor3 = Color3.new(1,1,1)
Toggle.Font = Enum.Font.SourceSansBold
Toggle.TextSize = 18

-- VARIABLES
local dragging = false
local enabled = false
local hitboxSize = 0

-- APPLY HITBOX
local function ApplyHitboxes()
	for _, plr in pairs(Players:GetPlayers()) do
		if plr ~= LocalPlayer then
			local char = plr.Character
			if char and char:FindFirstChild("HumanoidRootPart") then
				local hrp = char.HumanoidRootPart
				hrp.Size = Vector3.new(hitboxSize, hitboxSize, hitboxSize)
				hrp.Transparency = 0.6
				hrp.Material = Enum.Material.Neon
				hrp.CanCollide = false
			end
		end
	end
end

-- RESET HITBOX
local function ResetHitboxes()
	for _, plr in pairs(Players:GetPlayers()) do
		if plr.Character and plr.Character:FindFirstChild("HumanoidRootPart") then
			local hrp = plr.Character.HumanoidRootPart
			hrp.Size = Vector3.new(2,2,1)
			hrp.Transparency = 1
			hrp.Material = Enum.Material.Plastic
			hrp.CanCollide = false
		end
	end
end

-- SLIDER LOGIC
SliderBG.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1 then
		dragging = true
	end
end)

UIS.InputEnded:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1 then
		dragging = false
	end
end)

UIS.InputChanged:Connect(function(input)
	if dragging and input.UserInputType == Enum.UserInputType.MouseMovement then
		local minX = SliderBG.AbsolutePosition.X
		local maxX = minX + SliderBG.AbsoluteSize.X
		local percent = math.clamp((input.Position.X - minX) / (maxX - minX), 0, 1)

		hitboxSize = math.floor(percent * 50)
		SliderFill.Size = UDim2.new(percent,0,1,0)
		ValueText.Text = "Hitbox Size: "..hitboxSize

		if enabled then
			ApplyHitboxes()
		end
	end
end)

-- TOGGLE
Toggle.MouseButton1Click:Connect(function()
	enabled = not enabled
	if enabled then
		Toggle.Text = "ON"
		Toggle.BackgroundColor3 = Color3.fromRGB(0,150,0)
		ApplyHitboxes()
	else
		Toggle.Text = "OFF"
		Toggle.BackgroundColor3 = Color3.fromRGB(150,0,0)
		ResetHitboxes()
	end
end)

-- INSERT KEY OPEN/CLOSE
UIS.InputBegan:Connect(function(input, gp)
	if gp then return end
	if input.KeyCode == Enum.KeyCode.Insert then
		Main.Visible = not Main.Visible
	end
end)