using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Audio;
using UnityEngine.Experimental.VFX;

public class FX_Speed : MonoBehaviour
{
    public GameObject cPlayer;

    [SerializeField]
    public VisualEffect VFXGraph;

    [SerializeField, Range(0, 6000)]
    public float normalSpeed = 0;

    [SerializeField, Range(0, 6000)]
    public float warpSpeed = 0;

    public AudioMixerGroup output;
    public AudioClip engineSound;
    private float minPitch = 0.5f;
    private float maxPitch = 2f;

    // Start is called before the first frame update
    void Start()
    {
        VFXGraph.SetFloat("Speed2", normalSpeed);
        cPlayer = GameObject.FindGameObjectWithTag("Player");
    }

    // Update is called once per frame
    void Update()
    {
        PlayerController pC = cPlayer.GetComponentInChildren<PlayerController>();

        normalSpeed = pC.Speed*100;

        ////adjust pitch of engine sound
        float ePitch = pC.Speed / 10*maxPitch;
        float maxSpeed = pC.MaxSpeed;
        float warpMaxSpeed = pC.WarpSpeed;

        changePitch(ePitch);

        if (normalSpeed >= 6000)
        {
            normalSpeed = 6000;
        }
        if(normalSpeed > 0 && gameObject.GetComponent<AudioSource>() == null)
        {
            engineOn(ePitch);
        }

        if (normalSpeed <= 0)
        {
            normalSpeed = 0;
            engineOff();
        }

        VFXGraph.SetFloat("Speed2", normalSpeed);

    }

    public void changePitch(float enginePitch)
    {
        if (gameObject.GetComponent<AudioSource>() != null)
        {
            AudioSource source = gameObject.GetComponent<AudioSource>();

            if (enginePitch <= 0.5f)
            {
                enginePitch = 0.5f;
            }

            if (enginePitch >= 2f)
            {
                enginePitch = 2f;
            }
            source.pitch = enginePitch;
            Debug.Log("Current Pitch: " + enginePitch.ToString());
        }
    }

    public void engineOn(float enginePitch)
    {
        AudioSource source = gameObject.AddComponent<AudioSource>();
        source.clip = engineSound;
        source.volume = 1;
        source.spatialBlend = 1f;
        source.minDistance = 0.1f;
        source.maxDistance = 5f;
        source.loop = true;
        source.pitch = enginePitch;
        source.Play();
    }

    public void engineOff()
    {
        AudioSource source = gameObject.GetComponent<AudioSource>();
        Destroy(source);
    }
}