/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * Licensed under the Oculus SDK License Agreement (the "License");
 * you may not use the Oculus SDK except in compliance with the License,
 * which is provided at the time of installation or download, or which
 * otherwise accompanies this software in either electronic or hard copy form.
 *
 * You may obtain a copy of the License at
 *
 * https://developer.oculus.com/licenses/oculussdk/
 *
 * Unless required by applicable law or agreed to in writing, the Oculus SDK
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Rendering;

[RequireComponent(typeof(AudioSource))]
public class RepeatSound : MonoBehaviour
{
    public AudioClip[] clips;
    public float repeatRate = 2.0f;
    public float repeatRateRandomization = 0.0f;
    public float pitchRandomizationSemitones = 1.0f;
    public float volumeRandomizationDb = 3.0f;
    public bool noRepeat = true;

    private AudioSource source;
    private float timer = 0.0f;
    private int clipIndexPrev = 0;
    private float repeatPeriod = 0.0f;

    void Start()
    {
        source = GetComponent<AudioSource>();
    }

    void Update()
    {
        timer += Time.deltaTime;
        if (timer > repeatPeriod)
        {
            timer = 0.0f;
            int clipIndex = 0;
            if (noRepeat)
            {
                clipIndex = Random.Range(0, clips.Length - 1);
                if (clipIndex >= clipIndexPrev)
                {
                    ++clipIndex;
                }
            }
            else
            {
                clipIndex = Random.Range(0, clips.Length);
            }

            clipIndexPrev = clipIndex;
            source.clip = clips[clipIndex];
            float pitchSemitones = Random.Range(-pitchRandomizationSemitones / 2, pitchRandomizationSemitones / 2);
            source.pitch = Mathf.Pow(2, pitchSemitones / 12);
            float volumeDb = Random.Range(-volumeRandomizationDb, 0.0f);
            source.volume = Mathf.Pow(10.0f, volumeDb / 20.0f);
            source.Play();

            float newRepeatRate = repeatRate + Random.Range(-repeatRateRandomization / 2, repeatRateRandomization / 2);
            repeatPeriod = 1.0f / newRepeatRate;
        }

    }
}