using UnityEngine;
using System.Collections;

public class AudioShowOutput : MonoBehaviour
{
	[Header("Inputs")]
	public Transform[] objects;

	[Header("Pulsation info")]
	public Vector3 pulsateAxis;
	public float pulsationMagnitude = 1f;
	public float pulsationRoughness = 1f;

	private Vector3[] scales;
	private float[] samples;
	private AudioSource source;

	// Use this for initialization
	void Start ()
	{
		source = GetComponent<AudioSource> ();

		scales = new Vector3[objects.Length];
		samples = new float[256];

		for (var i = 0; i < objects.Length; i++)
			scales [i] = objects [i].localScale;
	}

	// Update is called once per frame
	void Update ()
	{
		source.GetOutputData (samples, 0);

		var vol = 0f;

		for (var i = 0; i < samples.Length; i++)
			vol += Mathf.Abs (samples [i]);


		for(var i = 0; i < objects.Length; i++)
		{
			var objToScale = objects [i];

			objToScale.localScale = Vector3.Lerp(objToScale.localScale, scales[i] + pulsateAxis * vol * pulsationMagnitude, Time.smoothDeltaTime * pulsationRoughness);
		}
	}
}