unity--拖拽（UI-Image Sprite Render）

Posted 2023-03-02 格拉格拉

目录

1.UI ---Image拖拽

2.spriteReder拖拽

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1.UI ---Image拖拽

 

控制脚本需继承IBeginDragHandler, IEndDragHandler, IDragHandler 三个接口 并实现接口方法

public class ItemContr : MonoBehaviour, IBeginDragHandler, IEndDragHandler, IDragHandler

    private RectTransform rectTrans;

    private void Awake()
    
        rectTrans = GetComponent<RectTransform>();
    

    private void OnTriggerEnter2D(Collider2D other)
    
        //....
    

    private void OnTriggerExit2D(Collider2D other)
    
        //....
    

    public void OnBeginDrag(PointerEventData eventData)
    
        rectTrans.SetAsLastSibling();
    

    public void OnDrag(PointerEventData eventData)
    
        rectTrans.anchoredPosition += eventData.delta;
    

    public void OnEndDrag(PointerEventData eventData)
    
        rectTrans.SetSiblingIndex(1);
    

2.spriteReder拖拽

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

public class ItemContr : MonoBehaviour

    private Vector3 oriMousePos;
    private Vector3 oriPos;

    void Start()
    

    

    void Update()
    

    

    private void OnMouseDown()
    
        oriMousePos = Input.mousePosition;
        oriPos = transform.position;
    

    private void OnMouseDrag()
    
        var offset = (Camera.main.ScreenToWorldPoint(Input.mousePosition).x - Camera.main.ScreenToWorldPoint(oriMousePos).x);
        transform.position = new Vector3(oriPos.x + offset, transform.position.y, transform.position.z);
    

    private void OnMouseUp()
    
        Debug.LogError("Up");