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

public class MyTile : MonoBehaviour
{
    public List<GameObject> elementObj = new List<GameObject>();
    public List<Terrain> terrainTile;
    private bool isEntry = false;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    public void AddElement(GameObject element)
    {
        elementObj.Add(element);
        element.gameObject.SetActive(isEntry);
    }

    public void AddSplitTerrain(Terrain tile)
    {
        terrainTile.Add(tile);
    }
    public void Show()
    {
        bool del = true;
        while (del)
        {
            del = false;
            foreach (var item in elementObj)
            {
                if (item == null)
                {
                    elementObj.Remove(item);
                    del = true;
                    break;
                }
                else
                {
                    item.SetActive(true);
                }
            }
        }
    }

    public void Hide()
    {
        bool del = true;
        while(del)
        {
            del = false;
            foreach (var item in elementObj)
            {
                if (item == null)
                {
                    elementObj.Remove(item);
                    del = true;
                    break;
                }
                else
                {
                    item.SetActive(false);
                }
            }
        }
        
    }
    private void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.layer == LayerMask.NameToLayer("Enemy"))
        {
            bool ifFind = elementObj.Find(delegate (GameObject item){ return item == other.gameObject; });
            if(ifFind)
            {
                return;
            }
            elementObj.Add(other.gameObject);
        }
        if (other.gameObject.layer != LayerMask.NameToLayer("CameraCube"))
        {
            return;
        }
        isEntry = true;
        Show();
    }
    private void OnTriggerExit(Collider other)
    {
        if (other.gameObject.layer == LayerMask.NameToLayer("Enemy"))
        {
            elementObj.Remove(other.gameObject);
        }
        if (other.gameObject.layer != LayerMask.NameToLayer("CameraCube"))
        {
            return;
        }
        isEntry = false;
        Hide();
    }
    private void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.layer == LayerMask.NameToLayer("Enemy"))
        {
            bool ifFind = elementObj.Find(delegate (GameObject item) { return item == collision.gameObject; });
            if (ifFind)
            {
                return;
            }
            elementObj.Add(collision.gameObject);
        }
        if (collision.gameObject.layer != LayerMask.NameToLayer("CameraCube"))
        {
            return;
        }
        isEntry = true;
        Show();
    }
    private void OnCollisionExit(Collision collision)
    {
        if (collision.gameObject.layer == LayerMask.NameToLayer("Enemy"))
        {
            elementObj.Remove(collision.gameObject);
        }
        if (collision.gameObject.layer != LayerMask.NameToLayer("CameraCube"))
        {
            return;
        }
        isEntry = false;
        Hide();
    }
}