koobas.hobune.stream
How to move prefabs array in sine wave?
I'm rather new to C# and Unity, so appologize if the question is too basic.
I have an array of prefabs instantiated and I'd like to move them like a sine wave. Attached it's how it looks so far (they've only been created).
I reckon each prefab would need to be in a different position of the wave, so maybe there'd be a delay of their values?
Any help would be appreciated. Thanks
using UnityEngine;
using System.Collections;
public class SineWave : MonoBehaviour {
public int numberOfDots = 28;
public GameObject[] waveDots;
public GameObject waveDotPrefab;
private object sineWave;
void Start()
{
// re-initilaze array to get correct size
waveDots = new GameObject[numberOfDots];
// instantiate all prefab clones
for (int i = 1; i < numberOfDots; i++)
{
waveDots[i] = Instantiate(waveDotPrefab, new Vector3(0, 0, i), Quaternion.identity) as GameObject;
}
}
void Update()
{
// move the prefab clones as a sine wave
for (int i = 1; i < numberOfDots; i++)
{
// this was just part of my tries and fails
//waveDots[i].transform.position = new Vector3(0, 0, 0);
}
}
}
Try this :
Vector3 position = waveDots[i].transform.position ;
position.x = Mathf.Sin(Time.time + i *factor) * amplitude ;
waveDots[i].transform.position = position ;
Where factor is a floating value you will have to choose to make your sine wave smooth or not. A small value will make the wave smoother but with a low "frequency".
Thanks! But that makes the spheres move in the x axis only. I'm having issues in moving them like that ugly black wave I've drawn. They're already instantiated in a row in the z axis, so that should be enough to move them in the x axis, I'd guess.. =/
like this?
//scales the wave vertically
public float amplitude;
//scales the wave horizontally
public float waveLength;
//shifts the wave
public float phase;
void Update() {
for (int i = 1; i < numberOfDots; i++) {
float normalizedProgress = (float)i / (numberOfDots - 1);
float x = normalizedProgress * waveLength + phase;
Vector3 position = (Vector3.forward * i) + Vector3.up * Mathf.Sin(x) * amplitude;
}
}
