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<MapRouteAreaItem> 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
        };
        
        Debug.Log(standardPositions[0]);
        Debug.Log(standardPositions[1]);
        Debug.Log(standardPositions[2]);
    }
    private void Start()
    {
        GetList();
    }
    async void GetList() 
    {
        var res = await ConfigHelper.mapApi.GetRecommendAreaList();
        if (res.result) 
        {
            if (res.data.Count >= 3)
            {
                Initial(res.data);
                gameObject.SetActive(true);
            }
            else 
            {
                gameObject.SetActive(false);
            }
        }
    }

    public void Initial(List<MapRouteAreaItem> list)
    {
        int index = 0;
        foreach (CanvasGroup c in itemList) 
        {
            var area = list[index++];
            c.GetComponent<NewRouteItemController>().Initial(area);
            if (c.alpha != 1)
            {
                c.GetComponent<Button>().onClick.RemoveAllListeners();
                if (c.transform.localPosition.x < 0)
                {
                    c.GetComponent<Button>().onClick.AddListener(Right);
                }
                else
                {
                    c.GetComponent<Button>().onClick.AddListener(Left);
                }
            }
        }
        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;
        itemList[center].DOFade(0.5f, 0.5f);
        itemList[center].GetComponent<RectTransform>().DOScale(Vector3.one * 0.8f, 0.5f);
        itemList[center].GetComponent<RectTransform>().DOLocalMoveX(43, 0.5f);
        itemList[right].GetComponent<RectTransform>().DOLocalMoveX(-43, 0.5f);
        var area = list[((currentIndex++) + list.Count) % list.Count];
        itemList[right].GetComponent<NewRouteItemController>().Initial(area);
        if (currentIndex >= list.Count) currentIndex = 0;
        itemList[left].DOFade(1, 0.5f);
        itemList[left].GetComponent<RectTransform>().DOScale(Vector3.one, 0.5f);
        itemList[left].GetComponent<RectTransform>().DOLocalMoveX(0, 0.5f);
        itemList[left].transform.SetAsLastSibling();
        //事件改变
        itemList[left].GetComponent<Button>().onClick.RemoveAllListeners();
        itemList[left].GetComponent<Button>().onClick.AddListener(()=> 
        {
            if (itemList[left].transform.localPosition.x == 0) 
            {
                UIManager.ShowNewRouteDetailPanel(itemList[left].GetComponent<NewRouteItemController>().Area);
            }
        });
        itemList[center].GetComponent<Button>().onClick.RemoveAllListeners();
        itemList[center].GetComponent<Button>().onClick.AddListener(Left);
        itemList[right].GetComponent<Button>().onClick.RemoveAllListeners();
        itemList[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;
        itemList[center].DOFade(0.5f, 0.5f);
        itemList[center].GetComponent<RectTransform>().DOScale(Vector3.one*0.8f, 0.5f);
        itemList[center].GetComponent<RectTransform>().DOLocalMoveX(-43, 0.5f);
        itemList[left].GetComponent<RectTransform>().DOLocalMoveX(43, 0.5f);
        var area = list[((currentIndex--) + list.Count) % list.Count];
        var centerArea = list[currentIndex + 1];
        itemList[left].GetComponent<NewRouteItemController>().Initial(area);
        if (currentIndex < 0) currentIndex = list.Count - 1;
        itemList[right].DOFade(1, 0.5f);
        itemList[right].GetComponent<RectTransform>().DOScale(Vector3.one, 0.5f);
        itemList[right].GetComponent<RectTransform>().DOLocalMoveX(0, 0.5f);
        itemList[right].transform.SetAsLastSibling();
        //事件改变
        itemList[right].GetComponent<Button>().onClick.RemoveAllListeners();
        itemList[right].GetComponent<Button>().onClick.AddListener(() => 
        {
            if (itemList[right].transform.localPosition.x == 0) 
            {
                UIManager.ShowNewRouteDetailPanel(itemList[right].GetComponent<NewRouteItemController>().Area);
            }
        });
        itemList[center].GetComponent<Button>().onClick.RemoveAllListeners();
        itemList[center].GetComponent<Button>().onClick.AddListener(Right);
        itemList[left].GetComponent<Button>().onClick.RemoveAllListeners();
        itemList[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);
    }
    // Update is called once per frame
    void Update()
    {
        
    }
}