Im making some new beams and i need some sine effects but i dont know how to do this i hear i needed to use Math.sine but in very unsure in how to implement this into a script im trying to achieve sort of a wave pattern With motors Any help is appreciated.
This?
local Number = 1
local Height = 1
local Speed = 10
local Part = Instance.new("Part")
Part.Anchored = true
Part.Parent = workspace
while wait() do
local MathSin = Height * math.sin(Number / Speed)
Part.CFrame = CFrame.new(0, MathSin, 0)
Number += 1
end
2 Likes
Generally people love to stay away from complex trig problems 
Anyways, if you could elaborate a bit more on what you are trying to accomplish? Just a sine pattern?
You can accomplish this just by messing around with degrees if you want
while true do
for i=1, 360 do
print(math.sin(math.rad(i)))
wait()
end
end
You can mess around with code like this (which would move a part around)
workspace.Part.Position = workspace.Part.Position + Vector3.new(0, math.sin(math.rad(i))*.5, 0)
I would just suggest testing things out on your own as trig can be one of those things that you just need to troubleshoot
2 Likes
how can i make it output a max of 125 and a minimum of 45
Your parent formula is y = sin(x)
In order to increase the range of the function (max/min) we multiply on the outside
y = 40sin(x)
(The 40 is 80 / 2)
after that we want to change where it starts so we add
y = 40sin(x) + 85
(85 since 85 - 40 = 45 and 85 + 40 = 125)
1 Like
so what would a script with this look like?
local x = 123 -- variable can be i if used in a loop or something
math.sin(math.deg(x))*40 + 85
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It does not really work for me i will show you a video of what happens
Here is my script
for i,v in pairs(workspace.Ulights:GetChildren()) do
spawn(function()
while true do
local x = 123 – variable can be i if used in a loop or something
v.LightingController.Speed:Invoke(1)v.LightingController.Tilt:Invoke(math.sin(math.deg(x))*40 + 85) wait(.1) endend)
wait(.5)
end
local configSpeed = 0.1 -- change this to make it faster/slower
local configMin = 45
local configMax = 125
local evHeartbeat = game:GetService("RunService").Heartbeat
local progress = 0
evHeartbeat:Connect(function(timeDelta)
progress+=timeDelta*configSpeed
local tilt = (math.sin(progress)+1) * (configMax-configMin) / 2 + configMin
for i,v in pairs(workspace.Ulights:GetChildren()) do
--[[
Now you set your tilt here
I don't get what's with those invokes
Sine waves are already smooth and this code runs on every frame
]]
end
end)
1 Like
thx for help ima try it now i hope it works
nope still broken it wont work rly it does sort of the same thing as before
What do the invokes actually do? Do they call tweens, or what?
This problem is linked to your implementation. Unless you are using someone else’s script, the way I’d do this is have each light contain a ModuleScript containing a function which returns the position on each call. By default, it is a function that always returns 0.
Right now, I believe the issue lies with the tweens. There is no reason to tween something that’s already smooth. What probably happens is the sine wave is applied correctly, but the tween smoothens it out from a range of 45-125 to something like 82.5 - 87.5, making it seem like they aren’t moving.
1 Like
If you are using a 6Dmotor you could just set the desired angle or the current angle to the result of the math.sin operator?
1 Like
I made a simple example of what I meant. It doesn’t use motors, but the principle is very similar.
The actual code is contained inside the Module ModuleScript, while the script assigns an interpolation function.
test.rbxm (4.6 KB)
3 Likes
You can also use cos and tan to geenrate simular wave patterns.
See this plugin by CloneTrooper to better understand then Wave Generator - Roblox
Also Tweens and TweenService could fit your needs better. TweenService | Documentation - Roblox Creator Hub Here is a plugin to help you with tweensequences TweenSequence Editor - Roblox
2 Likes
Edited the code a bit to fit your use-case better. Now the function returns a Vector2, with X being the horizontal and Y being the vertical rotation. The previous one worked as if it was on a gimbal.
test2.rbxm (4.6 KB)
2 Likes
Ok i know its late but i got it to work but they all move at the same it should be L1 will move then L2 etc it goes on to L8 how do i do that?
i would highly reccomend you to not use roblox’s physics for that sorta stuff.
but as you can read below, math.sin returns the value on a sine wave.
By putting this into a for loop with value x in radians increasing to 2*pi, you can make visualize a sine wave by increasing the X position by one and having Y be the sine of x. (Vector3.new(X,math.sin(X),0))
The radius of the wave can be adjusted by multiplying the sine with the radius.
To make it make a circle, all you’ll need to do is to have X be the cosine of x and Y the sine of x.
1 Like
ok i made this script but it not work
local configSpeed = 0.1 -- change this to make it faster/slower
local configMin = 45
local configMax = 125
local evHeartbeat = game:GetService("RunService").Heartbeat
local progress = 0
evHeartbeat:Connect(function(timeDelta)
progress+=timeDelta*configSpeed
local nextmove = 1
local tilt = (math.sin(progress)+1) * (configMax-configMin) / 2 + configMin
for i,v in pairs(workspace.LLights:GetChildren()) do
if v.Name == ("L"+nextmove) then
v.Motors.Tilt.DesiredAngle = math.rad(tilt)
end
if nextmove == 8 then
nextmove = 1
else
nextmove = nextmove + 1
end
end
end)
What happens when you try this script?
I think a more versatile implementation would involve making use of the positions of each light so that you could use a formula like:
θ = Asin( k.r - ω t) + C
Where r is the position of the light and k is the wave vector, which is inversely proportional to the wavelength of the effect.
1 Like