transform.position Mathf.Sin

Unity Engine
1

Hi, how do I write in code to make an object moves up and down in an axis like a sine wave? Thank you very much.

http://upload.wikimedia.org/wikipedia/commons/7/77/Waveforms.svg

1 Like
2

Hi

There’s a script in the 3D Platform Tutorial to handle this, search for the LaserTrap in the document.

See ya

3

Thanks. I’m getting the object to move up and down now. But, how do I make it move in x-axis. I can’t get it move in Time.deltaTime.

var height = 3.2;
var speed = 2.0;
var timingOffset = 0.0;
var count=0;

function Update()
{
count++;
	var offset = Mathf.Sin(Time.time * speed + timingOffset) * height / 2;
	transform.position = Vector3(count, offset, 0);

}
4

The code you are using moves the object in the X axis by one unit each frame. To make it move at one unit per second, use something like this:-

   ...
var count=0.0;

function Update()
{
   count += Time.deltaTime;
	var offset = Mathf.Sin(Time.time * speed + timingOffset) * height / 2;
	transform.position = Vector3(count, offset, 0);

}
2 Likes
5

wow thanks. That’s what I’m looking for.

6

Aaaand some years after, it’s also what i was looking for.

7

And even from farther ahead in the future, this is what I am looking for.

8

Every two years someone comes across this post and is helped. Thank you for the great question, and the great answer!

9

I think this has just solved my problem too! Thanks!

10

A bit over 9 years later it also solved my issue, cheers!

11

woooo I time travelled to 2019 and got helped by this. thanks