132 lines
4.4 KiB
C#
132 lines
4.4 KiB
C#
using JetBrains.Annotations;
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using System.Collections;
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using System.Collections.Generic;
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using Unity.VisualScripting;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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using ZXKFramework;
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namespace DongWuYiXue.DaoNiaoShu
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{
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public class Drag : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerEnterHandler, IPointerExitHandler
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{
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public enum Group
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{
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group1,
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group2,
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group3,
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group4
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}
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public string dragName;
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public Group group;
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[Header("是否拖拽")]
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public bool drag;
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[HideInInspector]
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public GameObject falseImage;
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[HideInInspector]
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public GameObject rightImage;
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[HideInInspector]
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public GameObject hoverImage;
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[HideInInspector]
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public GameObject dragImage;
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public Drag rightTarget;//正确答案
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[HideInInspector]
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public Drag yourTarget;//您的答案
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DragManager dragManager;
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[HideInInspector]
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public RectTransform rectTransform;
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private Vector3 startPos;
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private Vector2 offset;
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[HideInInspector]
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public bool right;
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private Canvas canvas;
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private void Awake()
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{
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canvas = GetComponentInParent<Canvas>();
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rectTransform = GetComponent<RectTransform>();
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startPos = rectTransform.localPosition;
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falseImage = transform.FindFirst("FalseImg");
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rightImage = transform.FindFirst("RightImg");
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hoverImage = transform.FindFirst("HoverImg");
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dragImage = transform.FindFirst("DragImg");
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}
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public void Init(DragManager dragManager)
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{
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this.dragManager = dragManager;
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ResetPos();
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right = false;
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falseImage.SetActive(false);
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rightImage.SetActive(false);
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hoverImage.SetActive(false);
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dragImage.SetActive(false);
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yourTarget = null;
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}
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// 开始拖拽时调用
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public void OnBeginDrag(PointerEventData eventData)
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{
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if (drag && !falseImage.activeSelf && !rightImage.activeSelf)
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{
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Vector2 localPoint;
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// 使用父级 RectTransform 进行坐标转换
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RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransform.parent as RectTransform, eventData.position, canvas.worldCamera, out localPoint);
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// 计算鼠标相对于 UI 元素的偏移量
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offset = rectTransform.anchoredPosition - localPoint;
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dragManager.drag = this;
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}
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}
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// 拖拽过程中调用
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public void OnDrag(PointerEventData eventData)
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{
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if (drag && !falseImage.activeSelf && !rightImage.activeSelf)
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{
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dragImage.SetActive(true);
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hoverImage.SetActive(false);
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Vector2 localPoint;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransform.parent as RectTransform, eventData.position, canvas.worldCamera, out localPoint);
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// 根据鼠标位置和偏移量更新 UI 元素的位置
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rectTransform.anchoredPosition = localPoint + offset;
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}
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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if (drag && !falseImage.activeSelf && !rightImage.activeSelf)
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{
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dragManager.DragEnd();
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dragImage.SetActive(false);
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}
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}
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public void ResetPos()
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{
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rectTransform.localPosition = startPos;
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}
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public void OnPointerEnter(PointerEventData eventData)
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{
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// 获取当前的 EventSystem
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EventSystem eventSystem = EventSystem.current;
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// 检查鼠标是否在 UI 上
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if (eventSystem.IsPointerOverGameObject())
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{
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if (!dragImage.activeSelf && yourTarget == null)//dragImage和hoverImage只能有一个显示
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{
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hoverImage.SetActive(true);
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}
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}
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}
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public void OnPointerExit(PointerEventData eventData)
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{
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// 获取当前的 EventSystem
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EventSystem eventSystem = EventSystem.current;
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// 检查鼠标是否在 UI 上
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if (eventSystem.IsPointerOverGameObject())
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{
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hoverImage.SetActive(false);
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}
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}
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}
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}
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