效果：

场景结构：

 特殊物体：panel下面用排列组件horizent layout group放置多个需要显示的面板，用mask遮罩好。

 

主要思路：

这次是要在最后一个toggle的地方，依然向左滚动回1，这是难点。因此实际上在4后面，还增加了一个1面板的副本，等滑动到4后面的1后，直接重设整个panel的recttransform，狸猫换太子，视觉欺骗。

代码：

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using DG.Tweening;
using UnityEngine;
using UnityEngine.UI;public class RollControlPanel : MonoBehaviour
{private RectTransform rollPanel;private Vector2 startPos;private ToggleGroup toggleGroup;private Toggle[] toggles;private int preToggleIndex = 0;private int curToggleIndex = 0;private int toggleCount;public float moveValue = 756;private Tween slideTween;private List<Vector2> panelPos = new List<Vector2>();// Start is called before the first frame updatevoid Start(){rollPanel = transform.Find("Mask/RollPanel").GetComponent<RectTransform>();toggleGroup = transform.Find("TogglePanel/ToggleGroup").GetComponent<ToggleGroup>();toggles = transform.GetComponentsInChildren<Toggle>();startPos = rollPanel.anchoredPosition;panelPos.Add(startPos);int panelCount = rollPanel.childCount;for (int i = 1; i < panelCount; i++){Vector2 tmp = new Vector2(startPos.x - i * moveValue, startPos.y);panelPos.Add(tmp);}toggleCount = toggles.Length;for (int i = 0; i < toggleCount; i++){Toggle toggle = toggles[i];toggles[i].onValueChanged.AddListener((arg0 =>{OnToggleOpen(toggle);}));}IEnumerator enumerator = MovePanel();Coroutine setTogglesetToggle= StartCoroutine(enumerator);}/// <summary>/// 只关注循环播放/// </summary>/// <returns></returns>IEnumerator MovePanel(){while (true){yield return new WaitForSeconds(2f);if (curToggleIndex==toggleCount-1){//挪到最后一个（也就是第一个的副本）,偷偷重置位置slideTween = rollPanel.DOAnchorPosX(panelPos[panelPos.Count - 1].x, 0.5f).OnComplete((() =>{rollPanel.anchoredPosition = startPos;}));for (int i = 0; i < toggleCount; i++){toggles[i].onValueChanged.RemoveAllListeners();}toggles[0].isOn = true;for (int i = 0; i < toggleCount; i++){Toggle toggle = toggles[i];toggles[i].onValueChanged.AddListener((arg0 =>{OnToggleOpen(toggle);}));}preToggleIndex = curToggleIndex;curToggleIndex = 0;}else{//正常相对于当前位置移动curToggleIndex++;slideTween = rollPanel.DOAnchorPosX(panelPos[curToggleIndex].x, 0.5f);for (int i = 0; i < toggleCount; i++){toggles[i].onValueChanged.RemoveAllListeners();}toggles[curToggleIndex].isOn = true;for (int i = 0; i < toggleCount; i++){Toggle toggle = toggles[i];toggles[i].onValueChanged.AddListener((arg0 =>{OnToggleOpen(toggle);}));}preToggleIndex = curToggleIndex;}}}// private void Update()// {//     if (Input.GetKeyDown(KeyCode.K))//     {//         StopAllCoroutines();//         slideTween.Kill();//         rollPanel.anchoredPosition = startPos;//     }// }void OnToggleOpen(Toggle toggle){StopAllCoroutines();slideTween.Kill();if (toggle.isOn){for (int i = 0; i < toggleCount; i++){if (toggle == toggles[i]){curToggleIndex = i;break;}}//直接切换rect位置rollPanel.anchoredPosition = panelPos[curToggleIndex];IEnumerator enumerator = MovePanel();Coroutine setTogglesetToggle= StartCoroutine(enumerator);}}
}