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

public class PortalsController : MonoBehaviour
{
    public PortalsController targetPortal;              //传送目标
    public List<Rigidbody> rbs = new List<Rigidbody>(); //通过当前传送门的单位
    public float TransmitCD;                            //每个单位传送的CD
    public bool isReverse;                              //传送门朝向是否相反
    public bool onlyEnemy;                              //是否只能传送敌人

    private void OnTriggerEnter(Collider other)
    {
        //传送主角、使魔、敌人
        BeSearchTrigger beSearchTrigger = other.GetComponent<BeSearchTrigger>();
        if (beSearchTrigger != null)
        {
            Rigidbody rb = beSearchTrigger.GetComponentInParent<Rigidbody>();
            if(rb.tag == "Demonic")
            {
                return;
            }
            if(rb.tag == "Player" && onlyEnemy)
            {
                return;
            }
            if (Transmit(rb))
            {
                MoveCharacter moveCharacter = rb.GetComponent<MoveCharacter>();
                if (moveCharacter != null)
                {
                    moveCharacter.portalsController = this;
                    moveCharacter.transmitTime = TransmitCD;
                    moveCharacter.haveTransmit = true;
                }
            }
            return;
        }
        //传送子弹
        Bullet bullet = other.GetComponent<Bullet>();
        if(bullet != null && bullet.canTransmit)
        {
            Rigidbody rb = bullet.GetComponentInParent<Rigidbody>();
            if (Transmit(rb))
            {
                bullet.portalsController = this;
                bullet.transmitTime = TransmitCD;
                bullet.haveTransmit = true;
            }
            return;
        }
        //传送魂
        Soul soul = other.GetComponent<Soul>();
        if(soul != null)
        {
            Rigidbody rb = soul.GetComponent<Rigidbody>();
            if (Transmit(rb))
            {
                soul.portalsController = this;
                soul.transmitTime = TransmitCD;
                soul.haveTransmit = true;
            }
            return;
        }
    }

    //传送
    public bool Transmit(Rigidbody rb)
    {
       
        if (!targetPortal.rbs.Exists(t => t == rb))
        {
            if (!rbs.Exists(t => t == rb))
            {
                if ((transform.parent.localScale.x > 0 && rb.velocity.x > 0) ||
                    (transform.parent.localScale.x < 0 && rb.velocity.x < 0))
                {
                    rbs.Add(rb);
                    Vector3 targetPos = targetPortal.transform.position;
                    if (targetPortal.transform.parent.localScale.x > 0)
                    {
                        targetPos.x -= 1;
                    }
                    else
                    {
                        targetPos.x += 1;
                    }
                    
                    targetPos.y += rb.transform.position.y - transform.position.y;
                    rb.transform.position = targetPos;
                    if (!isReverse)
                    {
                        Vector3 velocity = rb.velocity;
                        velocity.x = -velocity.x;
                        rb.velocity = velocity;
                    }
                    return true;
                }
            }
        }
        return false;
    }
}