--// SERVICES
local Players = game:GetService("Players")
local UIS = game:GetService("UserInputService")
local player = Players.LocalPlayer
local CoreGui = game:GetService("CoreGui")

--// CHARACTER HANDLING (FIXES DEATH BREAK)
local character = player.Character or player.CharacterAdded:Wait()

player.CharacterAdded:Connect(function(char)
	character = char
end)

--// REMOVE OLD GUI
if CoreGui:FindFirstChild("OpenSourceHub") then
	CoreGui.OpenSourceHub:Destroy()
end

--// GUI
local gui = Instance.new("ScreenGui")
gui.Name = "OpenSourceHub"
gui.Parent = CoreGui
gui.ResetOnSpawn = false

local frame = Instance.new("Frame")
frame.Size = UDim2.new(0, 260, 0, 160)
frame.Position = UDim2.new(0.5, -130, 0.5, -80)
frame.BackgroundColor3 = Color3.fromRGB(20, 20, 30)
frame.BorderSizePixel = 0
frame.Parent = gui
Instance.new("UICorner", frame).CornerRadius = UDim.new(0, 12)

local gradient = Instance.new("UIGradient", frame)
gradient.Color = ColorSequence.new{
	ColorSequenceKeypoint.new(0, Color3.fromRGB(40,40,60)),
	ColorSequenceKeypoint.new(1, Color3.fromRGB(15,15,25))
}

local title = Instance.new("TextLabel")
title.Text = "OpenSource"
title.Font = Enum.Font.GothamBold
title.TextSize = 20
title.TextColor3 = Color3.fromRGB(255,255,255)
title.BackgroundTransparency = 1
title.Size = UDim2.new(1,0,0,40)
title.Parent = frame

local subtitle = Instance.new("TextLabel")
subtitle.Text = "Made by _OpenSource_"
subtitle.Font = Enum.Font.Gotham
subtitle.TextSize = 12
subtitle.TextColor3 = Color3.fromRGB(180,180,180)
subtitle.BackgroundTransparency = 1
subtitle.Position = UDim2.new(0,0,0,30)
subtitle.Size = UDim2.new(1,0,0,20)
subtitle.Parent = frame

local button = Instance.new("TextButton")
button.Size = UDim2.new(0.8, 0, 0, 50)
button.Position = UDim2.new(0.1, 0, 0.55, 0)
button.Text = "Kill All NPCs: OFF"
button.Font = Enum.Font.GothamBold
button.TextSize = 16
button.TextColor3 = Color3.fromRGB(255,255,255)
button.BackgroundColor3 = Color3.fromRGB(60, 60, 90)
button.Parent = frame
Instance.new("UICorner", button).CornerRadius = UDim.new(0, 10)

local btnGradient = Instance.new("UIGradient", button)
btnGradient.Color = ColorSequence.new{
	ColorSequenceKeypoint.new(0, Color3.fromRGB(80,80,120)),
	ColorSequenceKeypoint.new(1, Color3.fromRGB(40,40,70))
}

-- Dragging
local dragging, dragStart, startPos
frame.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1 then
		dragging = true
		dragStart = input.Position
		startPos = frame.Position
	end
end)

frame.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 delta = input.Position - dragStart
		frame.Position = UDim2.new(
			startPos.X.Scale,
			startPos.X.Offset + delta.X,
			startPos.Y.Scale,
			startPos.Y.Offset + delta.Y
		)
	end
end)

--// TOGGLE
local enabled = false
button.MouseButton1Click:Connect(function()
	enabled = not enabled
	button.Text = enabled and "Kill All NPCs: ON" or "Kill All NPCs: OFF"
end)

--// SAFE REMOTE FINDER (FIXES UNEQUIP BREAK)
local function getRemote()
	local function scan(container)
		if not container then return end
		for _, tool in pairs(container:GetChildren()) do
			if tool:IsA("Tool") then
				local server = tool:FindFirstChild("GunScript_Server")
				if server then
					local remote = server:FindFirstChild("InflictTarget")
					if remote then
						return remote
					end
				end
			end
		end
	end

	return scan(player:FindFirstChild("Backpack")) or scan(character)
end

--// NPC SCAN (SAFE)
local function getNPCs()
	local list = {}

	for _, obj in pairs(workspace:GetDescendants()) do
		if obj:IsA("Model") then
			local hum = obj:FindFirstChild("Humanoid")
			local root = obj:FindFirstChild("HumanoidRootPart")

			if hum and root and hum.Health > 0 and obj ~= character then
				table.insert(list, obj)
			end
		end
	end

	return list
end

--// ⚡ MAIN LOOP (SAFE + BURST)
task.spawn(function()
	while true do
		if enabled then
			pcall(function() -- prevents full break
				
				local remote = getRemote()
				local char = character
				local myRoot = char and char:FindFirstChild("HumanoidRootPart")

				if remote and myRoot then
					for _, npc in pairs(getNPCs()) do
						local hum = npc:FindFirstChild("Humanoid")
						local root = npc:FindFirstChild("HumanoidRootPart")

						if hum and root then
							local direction = (root.Position - myRoot.Position).Unit

							local args = {
								hum,
								root,
								2,
								direction,
								0,
								0,
								false
							}

							-- ⚡ BURST
							for i = 1, 3 do
								remote:FireServer(unpack(args))
							end
						end
					end
				end

			end)
		end

		task.wait(0.05)
	end
end)