using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using DG.Tweening;
using UnityEngine.EventSystems;

public class Start_UI : MonoBehaviour
{
    public AnimationCurve scaleCurve;

    Transform kuang;
    Vector3 str_kuang_pos;
    Vector3 end_kuang_pos;

    Transform AppName;
    Vector3 str_AppName;
    Vector3 end_AppName;

    Transform di;
    Vector3 str_di_pos;
    Vector3 end_di_pos;

    private void Awake()
    {
        kuang = transform.Find("kuang");
        AppName = transform.Find("AppName");
        di = transform.Find("di");

        str_kuang_pos = new Vector3(-2, 347, 0);
        str_AppName = str_kuang_pos;
        end_kuang_pos = kuang.localPosition;
        end_AppName = AppName.localPosition;

        kuang.localPosition = str_kuang_pos;
        AppName.localPosition = str_AppName;

        str_di_pos = new Vector3(0, -846, 0);
        end_di_pos = di.localPosition;
        di.localPosition = str_di_pos;
    }
    // Start is called before the first frame update
    void Start()
    {
        StartCoroutine(SwitchoverScenes());

    }
    public float GetScale(float v)
    {
        return scaleCurve.Evaluate(v);
    }

    void scale_appname() 
    {
        AppName.localScale = new Vector3(GetScale(Time.time), GetScale(Time.time), GetScale(Time.time));
        //yield return 1;
    }
    IEnumerator BeginScenes() 
    {
        InvokeRepeating("scale_appname", 0, 0.01f);
        kuang.DOLocalMove(end_kuang_pos, 1);
        AppName.DOLocalMove(end_AppName, 1);
        yield return new WaitForSeconds(1f);
        for (int i = 0; i < 5; i++)
        {
            if (i==0)
            {
                AppName.DOLocalRotate(Vector3.forward * 4, 0.05f);
                yield return new WaitForSeconds(0.05f);
            }
            else if (i==4)
            {
                AppName.DOLocalRotate(Vector3.zero, 0.05f);
                yield return new WaitForSeconds(0.05f);
            }
            else
            {
                if (AppName.localRotation.z>0)
                {
                    AppName.DOLocalRotate(-Vector3.forward * 4, 0.1f);
                    yield return new WaitForSeconds(0.1f);
                }
                else
                {
                    AppName.DOLocalRotate(Vector3.forward * 4, 0.1f);
                    yield return new WaitForSeconds(0.1f);
                }
                
            }
        }
        yield return new WaitUntil(() => (GetScale(Time.time) == 1));
        di.DOLocalMove(end_di_pos, 1);
        yield return new WaitForSeconds(1f);
    }

    IEnumerator SwitchoverScenes() 
    {
        yield return StartCoroutine(BeginScenes());
        gameObject.AddComponent<PassAnimation>();
        for (int i = 0; i < transform.childCount; i++)
        {
            transform.GetChild(i).gameObject.AddComponent<PassAnimation>();
        }
        yield return new WaitForSeconds(0.8f);
        SceneManager.LoadScene("EndScene");
        Debug.Log("可以跳转2");
    }
    // Update is called once per frame
    void Update()
    {
       
    }

    
}