using System.Collections;
using System.Collections.Generic;
using UnityEngine;
// Needed for changing Layer Order
using UnityEngine.Rendering;

public class ActorPosition : MonoBehaviour
{

    // References
    public SortingGroup actorController;
    public SortingGroup actorShadow;

    public float ActorPositionVector = 0f;
    public float FloorTransitionVector = 0f;

    public int actorFloor = 1;

    public int actorLayerOrder = 200;
    public int actorShadowOrder = 140;



    void Start()
    {
        // Setting up references for Sorting Order
        actorController = transform.Find("actor_animator_controller").GetComponent<SortingGroup>();
        actorShadow = transform.Find("actor_shadow").GetComponent<SortingGroup>();


        sortingGroupUpdate();
    }


    void OnTriggerStay2D(Collider2D other)
    {
        if (other == null) return;

        if (other.GetComponentInParent<FloorSorting>() != null) {

            if (actorFloor < other.GetComponent<FloorSorting>().FloorNumber){

                if (actorFloor != other.GetComponent<FloorSorting>().FloorNumber){

                    ActorPositionVector = this.transform.position.y;
                    FloorTransitionVector = other.GetComponent<Collider2D>().bounds.center.y;
                    // FloorTransitionVector = other.GetComponent<Collider2D>().transform.position.y + other.GetComponent<Collider2D>().offset.y;

                    Debug.Log("Raising Actor Draw Order.");

                    actorFloor = other.GetComponent<FloorSorting>().FloorNumber;
                    sortingGroupUpdate();
                }

            }
        }
    }





    void OnTriggerExit2D(Collider2D other) {
        if (other.GetComponentInParent<FloorSorting>() != null) {

            Debug.Log("EXITING Floor COL");

            ActorPositionVector = this.transform.position.y;
            FloorTransitionVector = other.GetComponent<Collider2D>().bounds.center.y;
            // FloorTransitionVector = other.GetComponent<Collider2D>().transform.position.y + other.GetComponent<Collider2D>().offset.y;

            if (ActorPositionVector <= FloorTransitionVector){
                Debug.Log("Lowering Actor Draw Order.");

                actorFloor = other.GetComponent<FloorSorting>().FloorNumber - 1;
                sortingGroupUpdate();

            }

        }

    }


    void sortingGroupUpdate(){

        // Moving Actor's model and Shadow to new Sorting Orders.
        actorLayerOrder = 100 + actorFloor*100;
        actorShadowOrder = 40 + actorFloor*100;

        actorController.sortingOrder = actorLayerOrder;
        actorShadow.sortingOrder = actorShadowOrder;
    }
}