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

public class MoPath : MonoBehaviour {
    private List<Vector3> PositionList = new List<Vector3>();
    public GameObject PositionListParent;
    private Vector3 CurrentPosition;
    private int PositionIndex = 0;
    public float MoPathSpeed = 1;
    private float PositionLerpAmnt;
    private Vector3 NewPosition;
    private Vector3 NewScale;
    private Vector3 StartScale;
    private Vector3 AimDirection;
    private int ListLen;
    public bool DoRandomize;
	void Start ()
    {

        StartScale = transform.localScale;
        foreach (Transform child in PositionListParent.transform)
            {
            if (child.gameObject.activeSelf == true)
            {
                PositionList.Add(child.position);
            }
            //Debug.Log(child.position);
            }
        ListLen = PositionList.Count;
        CurrentPosition = transform.position;
        if (DoRandomize)
        {
            PositionIndex = Random.Range(0, ListLen - 1);
        }
	}

	// Update is called once per frame
	void Update () {

        NewPosition = Vector3.Lerp(CurrentPosition, PositionList[PositionIndex], PositionLerpAmnt);

        if (PositionIndex == 1)
        {
            NewScale = Vector3.Slerp(Vector3.zero, StartScale, PositionLerpAmnt);

        }
        if (PositionIndex == ListLen-1)
        {
            NewScale = Vector3.Slerp(StartScale, Vector3.zero, PositionLerpAmnt);
        }


        if (PositionLerpAmnt >= 1)
        {
            if (PositionIndex < ListLen)
            {
                CurrentPosition = transform.position;
                PositionIndex += 1;
                PositionLerpAmnt = 0;
            }
            if (PositionIndex == ListLen)
            {
                PositionIndex = 0;
            }



        }
        //AimDirection = Vector3.RotateTowards(transform.position, PositionList[PositionIndex+1], 1, 360);
        if(PositionIndex < ListLen - 1)
        {
            transform.LookAt(PositionList[PositionIndex]);
        }

        transform.localScale = NewScale;
        transform.position = NewPosition;
        PositionLerpAmnt += MoPathSpeed * Time.deltaTime;

    }
}