using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.UI;
using DG.Tweening;
using TMPro;

public class GameController : UnitySingleton<GameController>
{   
    private float cameraTransDistance = 0;
    private float cameraStartX;
    
    public struct Death{
        public enum DeadReason { Camera , PersonFall }
        public DeadReason deadReason;
    }

    private Horse horse;
    private CameraManager cameraManager;
    private Person person;
    public bool hasGameOver = false;

    void Start(){
        FindSth();
    }

    void Update(){
        // //当同时按下左右扳机，触发重开,仅调试用
        // if(Gamepad.current != null && Gamepad.current.leftTrigger.isPressed && Gamepad.current.rightTrigger.isPressed){
        //     UnityEngine.SceneManagement.SceneManager.LoadScene(UnityEngine.SceneManagement.SceneManager.GetActiveScene().name);
        // }
        //如果已经游戏结束，并且按下手柄Y键，则重新开始游戏
        if(hasGameOver && Gamepad.current != null && Gamepad.current.buttonNorth.isPressed){
            StartCoroutine(RestartCoroutine());
            //UnityEngine.SceneManagement.SceneManager.LoadScene(UnityEngine.SceneManagement.SceneManager.GetActiveScene().name);
        }
    }

    private IEnumerator RestartCoroutine(){
        //仅防止多次触发
        hasGameOver = false;
        //首先呼出黑幕
        BlackController.Instance.Trans();
        //等到屏幕全黑
        yield return new WaitUntil(() => {return BlackController.Instance.AllBlack;});
        //切换场景
        UnityEngine.SceneManagement.SceneManager.LoadScene(UnityEngine.SceneManagement.SceneManager.GetActiveScene().name);
    }

    void FindSth(){
        horse = FindObjectOfType<Horse>();
        cameraManager = FindObjectOfType<CameraManager>();
        person = FindObjectOfType<Person>();
        cameraStartX = Camera.main.transform.position.x;
    }

    public void GameOver(Death deathInfo){
        hasGameOver = true;
        //触发马的死亡功能
        horse.Death(deathInfo);
        //触发人的死亡功能
        person.Death(deathInfo);
        //告诉相机马死了
        cameraManager.Death(deathInfo);
        StartCoroutine(UICoroutine());
    }

    public RectTransform restartUI;
    public TextMeshProUGUI meter;
    private IEnumerator UICoroutine(){
        //计算相机移动距离
        cameraTransDistance = Camera.main.transform.position.x - cameraStartX; 
        cameraTransDistance /= 5;
        //设定UI分数显示为cameraTransDistance
        //restartUI = GameObject.Find("重开").GetComponent<RectTransform>();
        meter.text = ((int)cameraTransDistance).ToString();
        //等待2秒钟
        yield return new WaitForSeconds(2);
        //UI进入页面
        restartUI.DOLocalMoveX(0,1f);
    }
   
}