ComfyFactorio/maps/pitch_black/blood_moon.lua

local Public = {}

local get_noise = require "utils.get_noise"
local math_abs = math.abs
local math_round = math.round

function Public.set_daytime(surface, tick)
	local noise = get_noise("n1", {x = tick * 1, y = 0}, surface.map_gen_settings.seed)	
	local daytime = math_abs(math_round(noise, 5))
	
	local brightness_modifier = 1.55 - daytime * 1.5
	if brightness_modifier < 0 then brightness_modifier = 0 end
	if brightness_modifier > 1 then brightness_modifier = 1 end
	
	if noise > 0 then
		surface.brightness_visual_weights = {1, brightness_modifier, 1}
	else
		surface.brightness_visual_weights = {brightness_modifier, 1, 1}
	end
	
	global.daytime = daytime
	
	if daytime > 0.55 then daytime = 0.55 end
	surface.daytime = daytime		
end

return Public