How can I make a part follow this path?

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#1

How can I make a part loop around in a infinite symbol?
CFrames or constraints, I need a way.

Screenshot (222)
Screenshot (222)811×495 250 KB

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#2

You could maybe use math.sin() and math.cos().

#3

I don’t know much about math, so I don’t know what sin or cos is.
Could you give me an example?

#4

Back to back Cubic Beziers, Shameless plug How to make lerp Bezier Curves with RunService! [Chapter 1] but soon I might add a tutorial for cubics, but they aren’t really that complicated

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#5

I tried looking at the tutorial, I don’t know how to make an infinite symbol out of that.

#6

I feel honoured! When I get to my PC, I will make an update on the tutorial, and include your problem as an example

#7

I’m not very good at explaining, so I can’t really get into detail about what sin and cosine is in math terminology. Here is a gif that might help understand:

As you can see from the graph, sine is a number that moves back and forth from -1, to 1. You can use the wave-like motion in the sine function to sort of recreate the infinite symbol.

With this script, we can create the horizonal motion by applying the math.sin() function to the x-coordinate. In this example, I multiplied the current time with speed (5) to make it faster. I also multiplied the whole math.sin() function with strength (5) so that it made bigger movements.

local runservice = game:GetService('RunService')

local part = script.Parent
local x = part.Position.X
local y = part.Position.Y
local z = part.Position.Z
local speed = 5 -- feel free to change
local strength = 5 -- feel free to change

runservice.Heartbeat:Connect(function()
	local currentTime = tick() -- current time is the elapsed
	part.Position = Vector3.new(x + math.sin(currentTime*speed)*strength, y, z)
end)

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Next, we can combine that with the vertical motion by applying the same math.sin() function to the Y-coordinate. I then doubled the speed and then made the strength lower to create the infinite symbol

local runservice = game:GetService('RunService')

local part = script.Parent
local x = part.Position.X
local y = part.Position.Y
local z = part.Position.Z
local speed = 5 -- feel free to change
local strength = 5 -- feel free to change

runservice.Heartbeat:Connect(function()
	local currentTime = tick() -- current time is the elapsed
	part.Position = Vector3.new(x + math.sin(currentTime*speed)*strength, y + math.sin(2*currentTime*speed)*strength/3 z)
end)

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I hope this helps a little bit.

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#8

Well said! Nice to see appreciation of sine graphs!!

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#9

Thanks so much to you both, I’m going to use this for my view bobbing script.

1 Like