-- Delta Mobile: Visual FOV + Lock-On Camera + Red Locked Button (Top Right)
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local TweenService = game:GetService("TweenService")
local Camera = workspace.CurrentCamera
local LocalPlayer = Players.LocalPlayer
local UserInputService = game:GetService("UserInputService")

local Radius = 100
local MaxDistance = 100
local rainbowFOV = false
local hue = 0
local currentTarget = nil

-- Draw FOV circle
local circle = Drawing.new("Circle")
circle.Visible = true
circle.Radius = Radius
circle.Thickness = 2
circle.Position = Vector2.new(Camera.ViewportSize.X / 2, Camera.ViewportSize.Y / 2)
circle.Color = Color3.fromRGB(0, 0, 0)
circle.Transparency = 0.6
circle.Filled = false

-- GUI setup
local gui = Instance.new("ScreenGui", game:GetService("CoreGui"))
gui.Name = "FOV_GUI"

-- Button: Locked On indicator (TOP RIGHT)
local lockedButton = Instance.new("TextLabel")
lockedButton.Size = UDim2.new(0, 160, 0, 40)
lockedButton.Position = UDim2.new(1, -170, 0.02, 0)
lockedButton.AnchorPoint = Vector2.new(0, 0)
lockedButton.BackgroundColor3 = Color3.fromRGB(200, 0, 0) -- red
lockedButton.TextColor3 = Color3.fromRGB(255, 255, 255)
lockedButton.Text = "🔒 LOCKED ON"
lockedButton.TextScaled = true
lockedButton.Font = Enum.Font.SourceSansBold
lockedButton.Visible = false
lockedButton.Parent = gui

-- Buttons: FOV Color and Rainbow toggle (bottom left)
local button1 = Instance.new("TextButton")
button1.Size = UDim2.new(0, 140, 0, 40)
button1.Position = UDim2.new(0.02, 0, 0.82, 0)
button1.BackgroundColor3 = Color3.fromRGB(0, 0, 0)
button1.TextColor3 = Color3.new(1, 1, 1)
button1.Text = "Change FOV Color"
button1.TextScaled = true
button1.Font = Enum.Font.SourceSansBold
button1.Parent = gui

local button2 = Instance.new("TextButton")
button2.Size = UDim2.new(0, 140, 0, 40)
button2.Position = UDim2.new(0.02, 0, 0.90, 0)
button2.BackgroundColor3 = Color3.fromRGB(0, 0, 0)
button2.TextColor3 = Color3.new(1, 1, 1)
button2.Text = "Rainbow FOV: OFF"
button2.TextScaled = true
button2.Font = Enum.Font.SourceSansBold
button2.Parent = gui

-- Make buttons draggable
local function makeDraggable(button)
	local dragging, dragInput, dragStart, startPos
	button.InputBegan:Connect(function(input)
		if input.UserInputType == Enum.UserInputType.Touch or input.UserInputType == Enum.UserInputType.MouseButton1 then
			dragging = true
			dragStart = input.Position
			startPos = button.Position
			input.Changed:Connect(function()
				if input.UserInputState == Enum.UserInputState.End then dragging = false end
			end)
		end
	end)
	button.InputChanged:Connect(function(input)
		if input.UserInputType == Enum.UserInputType.Touch or input.UserInputType == Enum.UserInputType.MouseMovement then
			dragInput = input
		end
	end)
	UserInputService.InputChanged:Connect(function(input)
		if input == dragInput and dragging then
			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
	end)
end

makeDraggable(button1)
makeDraggable(button2)

-- Color options
local fovColors = {
	Color3.fromRGB(0, 0, 0),
	Color3.fromRGB(255, 0, 0),
	Color3.fromRGB(0, 255, 0),
	Color3.fromRGB(0, 170, 255),
	Color3.fromRGB(255, 255, 0)
}
local colorIndex = 1

button1.MouseButton1Click:Connect(function()
	rainbowFOV = false
	button2.Text = "Rainbow FOV: OFF"
	colorIndex += 1
	if colorIndex > #fovColors then colorIndex = 1 end
	circle.Color = fovColors[colorIndex]
end)

button2.MouseButton1Click:Connect(function()
	rainbowFOV = not rainbowFOV
	button2.Text = "Rainbow FOV: " .. (rainbowFOV and "ON" or "OFF")
end)

-- Lock-on target detection
local function getClosestTarget()
	local closest = nil
	local closestDist = math.huge
	for _, player in pairs(Players:GetPlayers()) do
		if player ~= LocalPlayer and player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
			local hrp = player.Character.HumanoidRootPart
			local pos, onScreen = Camera:WorldToViewportPoint(hrp.Position)
			local distFromCenter = (Vector2.new(pos.X, pos.Y) - circle.Position).Magnitude
			local distFromPlayer = (hrp.Position - LocalPlayer.Character.HumanoidRootPart.Position).Magnitude
			if onScreen and distFromCenter <= Radius and distFromPlayer <= MaxDistance then
				if distFromCenter < closestDist then
					closestDist = distFromCenter
					closest = player
				end
			end
		end
	end
	return closest
end

-- Main loop
RunService.RenderStepped:Connect(function()
	if rainbowFOV then
		hue += 0.005
		if hue > 1 then hue = 0 end
		circle.Color = Color3.fromHSV(hue, 1, 1)
	end

	local newTarget = getClosestTarget()

	-- Lock-on logic
	if newTarget ~= currentTarget then
		currentTarget = newTarget
		if currentTarget then
			lockedButton.Visible = true
		else
			lockedButton.Visible = false
		end
	end

	-- Camera aim assist (look at target)
	if currentTarget and currentTarget.Character and currentTarget.Character:FindFirstChild("HumanoidRootPart") then
		local targetHRP = currentTarget.Character.HumanoidRootPart.Position
		local camPos = Camera.CFrame.Position
		local newLook = CFrame.new(camPos, targetHRP)
		Camera.CFrame = CFrame.new(camPos, targetHRP)
	end

	-- Highlight logic
	for _, player in pairs(Players:GetPlayers()) do
		if player ~= LocalPlayer and player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
			local char = player.Character
			local hrp = char.HumanoidRootPart
			local pos, onScreen = Camera:WorldToViewportPoint(hrp.Position)
			local distFromCenter = (Vector2.new(pos.X, pos.Y) - circle.Position).Magnitude
			local distFromPlayer = (hrp.Position - LocalPlayer.Character.HumanoidRootPart.Position).Magnitude

			if onScreen and distFromCenter <= Radius and distFromPlayer <= MaxDistance then
				if not char:FindFirstChild("FOVHighlight") then
					local hl = Instance.new("Highlight")
					hl.Name = "FOVHighlight"
					hl.Adornee = char
					hl.FillColor = Color3.fromRGB(255, 255, 255)
					hl.FillTransparency = 0.75
					hl.OutlineTransparency = 1
					hl.Parent = char
				end
			else
				local existing = char:FindFirstChild("FOVHighlight")
				if existing then existing:Destroy() end
			end
		end
	end
end)