using System.Collections.Generic;
using UnityEngine;

public class FollowPath : MonoBehaviour
{
    public enum MovementTypes
    {
        Moveing, Lerping

    }

    public MovementTypes MovementType = MovementTypes.Moveing;
    public MovementPath MyPath;
    public float speed = 1;
    public float maxDistance = .1f;

    public IEnumerator<Transform> pointInPath;

    // Start is called before the first frame update
    void Start()
    {
        if (MyPath == null)
        {
            Debug.Log("path not attached");
            return;
        }
        pointInPath = MyPath.GetNextPathPoint();
        pointInPath.MoveNext();
        if (pointInPath.Current == null)
        {
            Debug.Log("need points");
            return;
        }
        transform.position = pointInPath.Current.position;
    }

    // Update is called once per frame
    void Update()
    {
        if (pointInPath == null || pointInPath.Current == null)
        {
            return;
        }
        if (MovementType == MovementTypes.Moveing)
        {
            transform.position = Vector3.MoveTowards(transform.position, pointInPath.Current.position, Time.deltaTime * speed);
        }
        else
        {
            transform.position = Vector3.Lerp(transform.position, pointInPath.Current.position, Time.deltaTime * speed);
        }

        var distanceSqare = (transform.position - pointInPath.Current.position).sqrMagnitude;
        if (distanceSqare < maxDistance * maxDistance)
        {
            pointInPath.MoveNext();
        }
    }
}