-- Camera Follow with UI, FOV Circle, Distance Display
-- Safe for own game / spectator mode

local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local player = Players.LocalPlayer
local camera = workspace.CurrentCamera

-- SETTINGS
local ENABLED = false
local FOV_RADIUS = 180 -- pixels
local SMOOTHNESS = 0.12
local MAX_DISTANCE = 500

-- UI
local gui = Instance.new("ScreenGui", player:WaitForChild("PlayerGui"))
gui.Name = "CameraFollowUI"

-- Toggle Button
local toggle = Instance.new("TextButton", gui)
toggle.Size = UDim2.new(0,160,0,40)
toggle.Position = UDim2.new(0,20,0,20)
toggle.Text = "Camera Follow: OFF"
toggle.BackgroundColor3 = Color3.fromRGB(30,30,30)
toggle.TextColor3 = Color3.fromRGB(255,255,255)
toggle.BorderSizePixel = 0
toggle.TextScaled = true
toggle.Font = Enum.Font.GothamBold

toggle.MouseButton1Click:Connect(function()
	ENABLED = not ENABLED
	toggle.Text = ENABLED and "Camera Follow: ON" or "Camera Follow: OFF"
end)

-- Distance Label
local distanceLabel = Instance.new("TextLabel", gui)
distanceLabel.Size = UDim2.new(0,200,0,30)
distanceLabel.Position = UDim2.new(0.5,-100,0.5,80)
distanceLabel.BackgroundTransparency = 1
distanceLabel.TextColor3 = Color3.fromRGB(255,255,255)
distanceLabel.TextScaled = true
distanceLabel.Font = Enum.Font.GothamBold
distanceLabel.Text = ""

-- FOV Circle
local circle = Instance.new("Frame", gui)
circle.Size = UDim2.new(0,FOV_RADIUS*2,0,FOV_RADIUS*2)
circle.Position = UDim2.new(0.5,-FOV_RADIUS,0.5,-FOV_RADIUS)
circle.BackgroundTransparency = 1
circle.BorderSizePixel = 0

local uiCorner = Instance.new("UICorner", circle)
uiCorner.CornerRadius = UDim.new(1,0)

local stroke = Instance.new("UIStroke", circle)
stroke.Thickness = 2
stroke.Color = Color3.fromRGB(0,170,255)
stroke.Transparency = 0.2

-- Find closest visible player in FOV
local function getTarget()
	local closest, closestDist = nil, math.huge
	local center = Vector2.new(camera.ViewportSize.X/2, camera.ViewportSize.Y/2)

	for _, plr in ipairs(Players:GetPlayers()) do
		if plr ~= player and plr.Character and plr.Character:FindFirstChild("HumanoidRootPart") then
			local hrp = plr.Character.HumanoidRootPart
			local screenPos, visible = camera:WorldToViewportPoint(hrp.Position)

			if visible and screenPos.Z > 0 then
				local screenDist = (Vector2.new(screenPos.X, screenPos.Y) - center).Magnitude
				local worldDist = (hrp.Position - camera.CFrame.Position).Magnitude

				if screenDist <= FOV_RADIUS and worldDist <= MAX_DISTANCE and screenDist < closestDist then
					closestDist = screenDist
					closest = hrp
				end
			end
		end
	end

	return closest
end

-- Camera update
RunService.RenderStepped:Connect(function()
	if not ENABLED then
		distanceLabel.Text = ""
		return
	end

	local target = getTarget()
	if target then
		local camPos = camera.CFrame.Position
		camera.CFrame = camera.CFrame:Lerp(
			CFrame.new(camPos, target.Position),
			SMOOTHNESS
		)

		local studs = math.floor((target.Position - camPos).Magnitude)
		distanceLabel.Text = studs .. " studs"
	else
		distanceLabel.Text = ""
	end
end)