Help with Day and night cycle

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#1

So, I’m using a day and night cycle and I’m trying to make it so when it’s a certain distance to night the fog and the brightness starts to change. here is how I’m doing it:

if lighting.ClockTime >= NightTime - .5 then
		if lighting.Brightness > 0 then
			lighting.Brightness -= .025
		end
		if lighting.FogEnd > 100 then
			lighting.FogEnd -= 5
		end
		if lighting.FogStart > 25 then
			lighting.FogStart -= 1
		end
	end

Ik this is not the most efficient way but idk how else to do it. problem is that this doesn’t work with color of fog. help needed

#2

still unsolved. just pushing this to the top.

1 Like
#3

So you want a drastic change in the fog when ClockTime is somewhere at night?

In the Lighting there must be an Atmosphere object. You can either:

  • Remove the Atmosphere object in game.Lighting
  • Use the Density property instead of Lighting.FogStart within the Atmosphere object.

In the documentation it states:

Fog properties are hidden when Lighting contains an Atmosphere object.

as it is used by the Atmosphere instance.

#4

No, I just need a better way to do what I’m doing. I need all the darkness settings to slowly change to the end goal.

1 Like
#5

When I want to change the fog and stuff, I would rather use float numbers to control the intensity of the fog which involves a bit of maths. Simply just taking away and adding the fog intensities imo would be harder to finetune and more complicated.

e.g. A multiplier will be used to increase/decrease the start and end of the Fog.

I wrote a basic script which calculates the multiplier based from the TimeOfDay and then applies the multiplier to the fog. You may need to change the variables to suit your needs.

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

--[[	

	If ClockTime reaches the end goal, the multiplier will be 1 (turning to night) or 0 (turning to day.)
	idk how to explain i'm bad at explaining maths

]]

-- Time Tick

local TimeTick = 0.1

-- Time goals

local NightStartGoal = 17
local NightEndGoal = 20

local DayStartGoal = 4
local DayEndGoal = 6

-- Fog values

local FogStartIntensity_Max	,FogStartIntensity_Min 	= 1000,100
local FogEndIntensity_Max	,FogEndIntensity_Min	= 4500,250

local TimeFloat = 0 -- This is a float number (0-1) which determines the intensity of the fog/brightness/colour

while true do
	local dt = runservice.Heartbeat:Wait()
	Lighting.ClockTime = Lighting.ClockTime + TimeTick  * (1/60)/dt -- Make sure that the tick is not too slow or too fast.
	local CurrentTime = Lighting.ClockTime
	
	if Lighting.ClockTime >= NightStartGoal and Lighting.ClockTime <= NightEndGoal then
		TimeFloat = 1 - (CurrentTime - NightEndGoal) / (NightStartGoal - NightEndGoal) -- goes from 0 to 1 (night)
	elseif Lighting.ClockTime >= DayStartGoal and Lighting.ClockTime <= DayEndGoal then
		TimeFloat = (CurrentTime - DayEndGoal) / (DayStartGoal - DayEndGoal) -- goes from 1 to 0 (day)
	end
	
	-- Now calculate the fog intensity
	
	local FogStartDiff = FogStartIntensity_Max - FogStartIntensity_Min
	local FogEndDiff = FogEndIntensity_Max - FogEndIntensity_Min
	
	Lighting.FogStart = FogStartIntensity_Max - (FogStartDiff * TimeFloat)
	Lighting.FogEnd = FogEndIntensity_Max - (FogEndDiff * TimeFloat)
end

Apologies if I didn’t annotate the code, I’m bad at explaining things.

If it is gradually aproaching night, the float variable TimeFloat would increase from 0 to 1 between the variables set by NightStartGoal and NightEndGoal. The oppisite effect is applied when ClockTime is approaching to day. The TimeFloat variable then determines the fog intensities between lines 43 and 47.

Sorry for the late responce, I was just finalising the code.

2 Likes
#6

I figured it out! Thank you tho! I figured out how to use lerp and it made everything easier.

1 Like
#7

Oh right, you could’ve just done that as well, :roll_eyes:
Reguardless, there are lots of solutions out there, My example happens to only be the one that I know of (and personally used before) which is why I thought to include it here.

#8

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