122 lines
4.9 KiB
C#
122 lines
4.9 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using DG.Tweening;
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using TMPro;
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using UnityEngine;
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namespace Ichni.UI
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{
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public class TextCatapult : MonoBehaviour
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{
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[Header("UI 元素")] [Tooltip("第一个文本组件")] [SerializeField]
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private TMP_Text textA;
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[Tooltip("第二个文本组件")] [SerializeField] private TMP_Text textB;
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[Header("动画参数")] [Tooltip("文本在中央停留显示的时间")] [SerializeField]
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private float displayDuration = 4f;
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[Tooltip("向上移动和淡入淡出的动画时间")] [SerializeField]
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private float animationDuration = 1f;
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[Tooltip("文本向上移动的距离")] [SerializeField]
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private float moveDistance = 200f;
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// --- 可选: 如果你想让文字内容循环变化 ---
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[Header("可选的文本内容")] [Tooltip("在这里填入你想循环显示的文字列表")] [SerializeField]
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private List<string> textContents = new List<string>();
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private TMP_Text[] _textElements;
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private int _currentTextIndex = 0; // 当前显示在中央的文本的索引 (0 或 1)
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private int _contentIndex = 0; // 当前显示内容的索引
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private Vector2 _centerPosition;
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private Sequence _animationSequence;
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void Start()
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{
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Setup();
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// 直接启动第一个动画过渡
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AnimateTransition();
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}
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void OnDestroy()
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{
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// 安全地杀死所有相关的DoTween动画，防止在场景切换或对象销毁时出错
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_animationSequence?.Kill();
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}
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/// <summary>
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/// 初始化设置
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/// </summary>
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private void Setup()
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{
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_textElements = new[] { textA, textB };
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// 记录中心位置
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_centerPosition = textA.rectTransform.anchoredPosition;
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// 设置 textA 的初始状态
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textA.rectTransform.anchoredPosition = _centerPosition;
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textA.alpha = 1f;
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UpdateTextContent(textA); // 设置初始文字
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// 设置 textB 的初始状态 (在下方，透明)
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textB.rectTransform.anchoredPosition = _centerPosition - new Vector2(0, moveDistance);
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textB.alpha = 0f;
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// textB 的内容将在它动画开始前更新，所以这里无需设置
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}
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/// <summary>
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/// 执行一次完整的文本过渡动画，并在完成后自我调用以形成循环
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/// </summary>
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private void AnimateTransition()
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{
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// 确定哪个文本要移出，哪个要移入
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TMP_Text textToAnimateOut = _textElements[_currentTextIndex];
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TMP_Text textToAnimateIn = _textElements[(_currentTextIndex + 1) % 2];
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// 创建一个新的动画序列
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_animationSequence = DOTween.Sequence();
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_animationSequence
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.AppendInterval(displayDuration) // 1. 等待当前文本显示4秒
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.AppendCallback(() => {
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// 2. 在动画开始前，更新即将进入的文本的内容
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UpdateTextContent(textToAnimateIn);
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})
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// 3. 同时执行两个文本的动画
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.Append(textToAnimateOut.rectTransform.DOAnchorPosY(_centerPosition.y + moveDistance, animationDuration).SetEase(Ease.OutCubic))
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.Join(textToAnimateOut.DOFade(0f, animationDuration).SetEase(Ease.OutCubic))
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.Join(textToAnimateIn.rectTransform.DOAnchorPosY(_centerPosition.y, animationDuration).SetEase(Ease.OutCubic))
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.Join(textToAnimateIn.DOFade(1f, animationDuration).SetEase(Ease.OutCubic))
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.OnComplete(() => {
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// 4. 当整个过渡动画完成时
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// 将刚刚移出的文本复位到起始位置，为下一次进入做准备
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textToAnimateOut.rectTransform.anchoredPosition = _centerPosition - new Vector2(0, moveDistance);
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// 切换当前文本的索引，为下个循环做准备
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_currentTextIndex = (_currentTextIndex + 1) % 2;
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// 启动下一次动画过渡，形成循环
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AnimateTransition();
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});
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_animationSequence.Play();
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}
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/// <summary>
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/// 更新文本内容（如果列表不为空）
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/// </summary>
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private void UpdateTextContent(TMP_Text textElement)
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{
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if (textContents == null || textContents.Count == 0)
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{
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return; // 如果列表为空，则不改变文字
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}
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textElement.text = textContents[_contentIndex];
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_contentIndex = (_contentIndex + 1) % textContents.Count; // 移动到下一个内容索引，并循环
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}
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}
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} |