using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using HTC.UnityPlugin.ColliderEvent;
using HTC.UnityPlugin.Utility;
using UnityEngine.UI;

//每种配件有且只有一个，安装之后枪上原有的配件会自动返还到背包、手里、或者枪柜里
//这个类为按钮类，按下按钮生成对应物品，或者返还对应物品
public class GunItemButton : MonoBehaviour ,IColliderEventPressDownHandler{
    //type用整型表示,来确定配件的类型,相同位置的配件会进行替换
    public GameObject self_;
    private GameObject selfObj_;
    private Transform leftHand_;
    private Button selfBtn_;
    //可以被枪所适配(每把枪有一个适配数组,如果数组里面没有该id则从列表中清除)
    public int id_;
    //表明在某一类配件栏里
    public int type_;
    //装配位置
    private Transform transform_;
    //取消射线选择用
    private GameObject leftRay;
    //配件是否在手里
    public bool isInHand;
    //配件是否在枪上
    public bool isInGun;
    //邦定玩家控制类
    private PlayerControl player;

    private void Start()
    {
        transform_ = GameObject.FindGameObjectWithTag("gun").transform;
        selfBtn_ = gameObject.GetComponent<Button>();
        leftHand_ = GameObject.FindGameObjectWithTag("leftHand").transform;
        leftRay = GameObject.FindGameObjectWithTag("leftRay");
        player = GameObject.FindGameObjectWithTag("Player").GetComponent<PlayerControl>();
    }

    //将地上的配件或者物品栏里的配件转移到手上(btn禁用)
    public void GetItem() {
        isInHand = true;
        selfObj_ = Instantiate(self_, leftHand_);
        selfObj_.AddComponent<GunItem>();
        selfObj_.GetComponent<GunItem>().itemBtn = selfBtn_;
        selfObj_.transform.localPosition = new Vector3(0,-0.1f,0);
        selfBtn_.interactable = false;
        leftRay.SetActive(false);
        player.leftTriggerClick.AddListener(ReleaseItem);
    }

    //安装配件失败时，配件会返回仓库(btn恢复禁用)
    public void ReleaseItem() {
            ReturnItem();
    }
    
    //配件安装成功时调用的方法(如果轨道上有配件，将枪上原有的配件与手中的配件进行交换)
    public void InstallItem(Vector3 pos){
        isInHand = false;
        selfObj_.transform.SetParent(transform_);
        selfObj_.transform.localPosition = pos;
        selfObj_.transform.localEulerAngles = self_.transform.localEulerAngles;
        leftRay.SetActive(true);
        player.leftTriggerClick.RemoveAllListeners();
    }

    //配件的返还(如果配件在手上，可以通过这个方法把手里的配件放回到背包里)
    public void ReturnItem() {
        isInHand = false;
        Destroy(selfObj_);
        selfBtn_.interactable = true;
        leftRay.SetActive(true);
        player.leftTriggerClick.RemoveAllListeners();
    }

    //配件的更替(如果枪上有配件,进行安装配件的时候,会把枪上的配件与手上的配件进行更替)
    public void ReplaceItem() {
        Destroy(selfObj_);
        GetItem();
    }

    //配件被点击的事件
    public void OnColliderEventPressDown(ColliderButtonEventData eventData)
    {
        
    }

    //获取枪械坐标
    public Transform getGunTrans() {
        return transform_;
    }
}