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

public class Parallax : MonoBehaviour
{

    private float length, startpos, camYStart;
    [SerializeField]
    [Tooltip("Offset to cameras y position.")]
    private float yOffset;
    public GameObject cam;
    public float parallaxEffect;
    [Tooltip(" 1 --> furthest away      0 --> very close")]
    public float heightMult;



    // Start is called before the first frame update
    void Start()
    {
        startpos = transform.position.x;
        length = GetComponent<SpriteRenderer>().bounds.size.x;
        camYStart = cam.transform.position.y;
    }

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

        float temporary = (cam.transform.position.x * (1 - parallaxEffect));
        float distance = (cam.transform.position.x * parallaxEffect);
        //Set Position
        transform.position = new Vector3(startpos + distance, transform.position.y, transform.position.z);
        //Stay in bounds
        if (temporary > startpos + length) startpos += length;
        else if (temporary < startpos - length) startpos -= length;
    }

    private void LateUpdate()
    {
        //Set Y (Vertical) Position
        float yDiff = camYStart + ((camYStart - cam.transform.position.y) * -1 * heightMult);
        transform.position = new Vector3(transform.position.x, yDiff - yOffset, transform.position.z);
    }
}