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

public class ParallaxBackground_0 : MonoBehaviour
{
    [Header("Layer Setting")]
    public float[] Layer_Speed = new float[7];
    public GameObject[] Layer_Objects = new GameObject[7];

    private Transform _camera;
    // private float[] startPos = new float[7];
    private float boundSizeX;
    private float sizeX;
    private GameObject Layer_0;
    public float SwitchPos = 40;
    public float SpeedMultiplier = -1;
    float startX;
    void Start()
    {
        _camera = Camera.main.transform;
        sizeX = Layer_Objects[0].transform.localScale.x;
        boundSizeX = Layer_Objects[0].GetComponent<SpriteRenderer>().sprite.bounds.size.x;
        startX = lastCamX = _camera.position.x;

        // for (int i=0;i<5;i++){
        //     startPos[i] = _camera.position.x;
        // }
    }
    float lastCamX;
    void Update(){
        float camDif = _camera.position.x - lastCamX;
        // Debug.Log(camDif);
        lastCamX = _camera.position.x;
        for (int i=0;i<5;i++){
            // float temp = (_camera.position.x * (1-Layer_Speed[i]) );
            // float distance = _camera.position.x  * Layer_Speed[i] ;

            Layer_Objects[i].transform.position += new Vector3(Layer_Speed[i] * camDif * SpeedMultiplier,0);
            if(Layer_Objects[i].transform.localPosition.x >= SwitchPos || Layer_Objects[i].transform.localPosition.x <= -SwitchPos){
                Layer_Objects[i].transform.localPosition = new Vector3(0,0,10);
            }
            // Layer_Objects[i].transform.position = new Vector2 (startPos[i] + distance, _camera.position.y);
            // if (temp > startPos[i] + boundSizeX*sizeX){
            //     startPos[i] += boundSizeX*sizeX;
            // }else if(temp < startPos[i] - boundSizeX*sizeX){
            //     startPos[i] -= boundSizeX*sizeX;
            // }
            
        }
    }
}