--!strict
-- PORTFOLIO SAMPLE / ROBLOX STUDIO VALIDATION REQUIRED
-- Put this Script in ServerScriptService in a separate test experience.
-- A full day passes every CYCLE_SECONDS seconds.

local Lighting = game:GetService("Lighting")
local RunService = game:GetService("RunService")

local CYCLE_SECONDS = 8 * 60 -- 8 minutes for a full 24-hour in-game day
local START_HOUR = 12
local DAY_BRIGHTNESS = 2.5
local NIGHT_BRIGHTNESS = 0.4
local DAY_AMBIENT = Color3.fromRGB(145, 155, 170)
local NIGHT_AMBIENT = Color3.fromRGB(53, 65, 100)

local currentHour = START_HOUR
Lighting.ClockTime = START_HOUR

RunService.Heartbeat:Connect(function(deltaTime: number)
	currentHour = (currentHour + (deltaTime / CYCLE_SECONDS) * 24) % 24
	Lighting.ClockTime = currentHour

	-- 0 at midnight, 1 at noon, smooth across sunrise/sunset.
	local sunFactor = math.clamp((math.cos((currentHour - 12) * math.pi / 12) + 0.2) / 1.2, 0, 1)
	Lighting.Brightness = NIGHT_BRIGHTNESS + (DAY_BRIGHTNESS - NIGHT_BRIGHTNESS) * sunFactor
	Lighting.OutdoorAmbient = NIGHT_AMBIENT:Lerp(DAY_AMBIENT, sunFactor)
end)