Unity的2D拖拽效果

最新推荐文章于 2024-12-13 16:38:32 发布

原创最新推荐文章于 2024-12-13 16:38:32 发布 · 1.2k 阅读

2 ·

CC 4.0 BY-SA版权

Unity工作随笔专栏收录该内容

19 篇文章

订阅专栏

实现2D的拖拽效果：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class Ye : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{ 

   
    // begin dragging
    public void OnBeginDrag(PointerEventData eventData)
    {
        SetDraggedPosition(eventData);
    }
    // during dragging
    public void OnDrag(PointerEventData eventData)
    {
        SetDraggedPosition(eventData);
    }
    // end dragging
    public void OnEndDrag(PointerEventData eventData)
    {
        SetDraggedPosition(eventData);
    }
    /// <summary>
    /// set position of the dragged game object
    /// </summary>
    /// <param name="eventData"></param>
    private void SetDraggedPosition(PointerEventData eventData)
    {
        var rt = gameObject.GetComponent<RectTransform>();
        // transform the screen point to world point int rectangle
        Vector3 globalMousePos;
        if (RectTransformUtility.ScreenPointToWorldPointInRectangle(rt, eventData.position, eventData.pressEventCamera, out globalMousePos))
        {
            rt.position = globalMousePos;
        }
    }
}