powerfun-unity/Assets/BannerController.cs

using Assets.Scripts;
using Assets.Scripts.Apis.Models;
using DG.Tweening;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;

public class BannerController : MonoBehaviour
{
    // Start is called before the first frame update
    private List<CanvasGroup> itemList;
    private List<Vector3> standardPositions;
    private List<Recommand> list;
    private int currentIndex = 1;
    void Awake()
    {
        itemList = new List<CanvasGroup>
        {
            transform.Find("1").GetComponent<CanvasGroup>(),
            transform.Find("2").GetComponent<CanvasGroup>(),
            transform.Find("3").GetComponent<CanvasGroup>()
        };
        standardPositions = new List<Vector3>
        {
            transform.Find("1").localPosition,transform.Find("2").localPosition,transform.Find("3").localPosition
        };
        AddTouchEvent();
        
        
        Debug.Log(standardPositions[0]);
        Debug.Log(standardPositions[1]);
        Debug.Log(standardPositions[2]);
    }
    TKPanRecognizer pan;
    private void AddTouchEvent()
    {
        pan = new TKPanRecognizer();
        var panList = new List<CanvasGroup>();
        pan.gestureRecognizedEvent += (r) =>
        {
            if (!App.currentPageIsHome) return;
            int center = GetCenterIndex(),
                left = GetSideIndex(true),
                right = GetSideIndex(false);
            if (!(center == -1 || left == -1 || right == -1) && panList.Count == 0)
            {
                panList.Add(itemList[left]);
                panList.Add(itemList[center]);
                panList.Add(itemList[right]);
            }
            if (panList.Count == 0) return;
            var startPoint = r.startTouchLocation();
            if (((RectTransform)transform).isPointInTransfrom(startPoint))
            {
                foreach (var item in panList)
                {
                    item.GetComponent<Button>().onClick.RemoveAllListeners();
                }
                var offset = pan.deltaTranslation;
                if (panList[1].transform.localPosition.x == 0)
                {
                    panList[1].transform.DOScale(0.8f, 0.5f);
                }
                if (offset.x > 0)
                {
                    //-43 0 43
                    //后面的 如果往左，需要回到-43再往右
                    panList[0].transform.localPosition += new Vector3(1, 0, 0);
                    panList[1].transform.localPosition += new Vector3(1, 0, 0);
                    panList[2].transform.localPosition += new Vector3(-1, 0, 0);
                }
                else if (offset.x < 0)
                {
                    panList[0].transform.localPosition += new Vector3(1, 0, 0);
                    panList[1].transform.localPosition += new Vector3(-1, 0, 0);
                    //后面的 如果往右，需要回到43再往左
                    panList[2].transform.localPosition += new Vector3(-1, 0, 0);
                }
            }
            else 
            {
                panList.Clear();
            }
        };
        pan.gestureCompleteEvent += (r) =>
        {
            if (!App.currentPageIsHome) return;
            if (panList.Count == 0) return;
            if (panList[1].transform.localPosition.x < 0)
            {
                DOLeft(panList[0], panList[1], panList[2]);
            }
            else
            {
                DORight(panList[0], panList[1], panList[2]);
            }
            panList.Clear();
        };
        TouchKit.addGestureRecognizer(pan);
    }

    private void Start()
    {
        GetList();
    }
    async void GetList() 
    {
        var res = await ConfigHelper.mapApi.GetRecommendList();
        if (res.result) 
        {
            if (res.data.Count >= 3)
            {
                Initial(res.data);
                gameObject.SetActive(true);
            }
            else 
            {
                gameObject.SetActive(false);
            }
        }
    }

    public void Initial(List<Recommand> list)
    {
        int index = 0;
        foreach (CanvasGroup c in itemList) 
        {
            var area = list[index++];

            c.GetComponent<RecommendController>().Initial(area);
            c.GetComponent<Button>().onClick.RemoveAllListeners();
            if (c.alpha != 1)
            {
                if (c.transform.localPosition.x < 0)
                {
                    c.GetComponent<Button>().onClick.AddListener(Right);
                }
                else
                {
                    c.GetComponent<Button>().onClick.AddListener(Left);
                }
            }
            else 
            {
                c.GetComponent<Button>().onClick.AddListener(()=>GoDetail(c));
            }
        }
        currentIndex = 1;
        this.list = list;
    }
    private void Right()
    {
        int center = GetCenterIndex(),
           left = GetSideIndex(true),
           right = GetSideIndex(false);
        if (center == -1 || left == -1 || right == -1) return;
        DOTween.CompleteAll();
        DORight(itemList[left], itemList[center], itemList[right]);
    }
    void DORight(CanvasGroup left, CanvasGroup center, CanvasGroup right) 
    {
        Sequence se = DOTween.Sequence();
        se.Join(center.DOFade(0.5f, 0.3f));
        se.Join(center.GetComponent<RectTransform>().DOScale(Vector3.one * 0.8f, 0.3f));
        se.Join(center.GetComponent<RectTransform>().DOLocalMoveX(43, 0.3f));
        se.Join(right.GetComponent<RectTransform>().DOLocalMoveX(-43, 0.3f));
        var area = list[((currentIndex++) + list.Count) % list.Count];
        right.GetComponent<RecommendController>().Initial(area);
        if (currentIndex >= list.Count) currentIndex = 0;
        se.Join(left.DOFade(1, 0.3f));
        se.Join(left.GetComponent<RectTransform>().DOScale(Vector3.one, 0.3f));
        se.Join(left.GetComponent<RectTransform>().DOLocalMoveX(0, 0.3f));
        se.Play();
        left.transform.SetAsLastSibling();
        //事件改变
        left.GetComponent<Button>().onClick.RemoveAllListeners();
        left.GetComponent<Button>().onClick.AddListener(() => GoDetail(left));
        center.GetComponent<Button>().onClick.RemoveAllListeners();
        center.GetComponent<Button>().onClick.AddListener(Left);
        right.GetComponent<Button>().onClick.RemoveAllListeners();
        right.GetComponent<Button>().onClick.AddListener(Right);
    }

    private void Left()
    {
        int center = GetCenterIndex(),
           left = GetSideIndex(true),
           right = GetSideIndex(false);
        if (center == -1 || left == -1 || right == -1) return;
        DOTween.CompleteAll();
        DOLeft(itemList[left], itemList[center], itemList[right]);
    }
    void DOLeft(CanvasGroup left, CanvasGroup center, CanvasGroup right) 
    {
        Sequence se = DOTween.Sequence();
        se.Join(center.DOFade(0.5f, 0.3f));
        se.Join(center.GetComponent<RectTransform>().DOScale(Vector3.one * 0.8f, 0.3f));
        se.Join(center.GetComponent<RectTransform>().DOLocalMoveX(-43, 0.3f));
        se.Join(left.GetComponent<RectTransform>().DOLocalMoveX(43, 0.3f));
        var area = list[((currentIndex--) + list.Count) % list.Count];
        var centerArea = list[currentIndex + 1];
        left.GetComponent<RecommendController>().Initial(area);
        if (currentIndex < 0) currentIndex = list.Count - 1;
        se.Join(right.DOFade(1, 0.3f));
        se.Join(right.GetComponent<RectTransform>().DOScale(Vector3.one, 0.3f));
        se.Join(right.GetComponent<RectTransform>().DOLocalMoveX(0, 0.3f));
        se.Play();
        right.transform.SetAsLastSibling();
        //事件改变
        right.GetComponent<Button>().onClick.RemoveAllListeners();
        right.GetComponent<Button>().onClick.AddListener(() => GoDetail(right));
        center.GetComponent<Button>().onClick.RemoveAllListeners();
        center.GetComponent<Button>().onClick.AddListener(Right);
        left.GetComponent<Button>().onClick.RemoveAllListeners();
        left.GetComponent<Button>().onClick.AddListener(Left);
    }
    int GetCenterIndex() 
    {
        return itemList.FindIndex(x => x.transform.localPosition.x == 0);
    }
    int GetSideIndex(bool left) 
    {
        return itemList.FindIndex(x => left ? x.transform.localPosition.x < 0 : x.transform.localPosition.x > 0);
    }
    void GoDetail(CanvasGroup c) 
    {
        if (c.transform.localPosition.x == 0)
        {
            var se = DOTween.Sequence();
            se.Append(c.transform.DOScale(1.05f * Vector3.one, 0.15f));
            se.Append(c.transform.DOScale(1f * Vector3.one, 0.15f));
            se.Play().onComplete = ()=> 
            {
                c.GetComponent<RecommendController>().DoWithType();
            };            
        }
    }

    float autoTime = 5;
    // Update is called once per frame
    void Update()
    {
        autoTime -= Time.deltaTime;
        if (autoTime < 0) 
        {
            Left();
            autoTime += 5;
        }
    }
    private void OnDestroy()
    {
        Debug.Log(248+"毁灭");
        TouchKit.removeGestureRecognizer(pan);
    }
}