【源码】Unity3D编程实现鼠标拖拽对象移动

1、1. 打开软件，创建工程如下图所示。

3、3. 双击脚本文件TestOnMouse，改写代码如下，并保存：using UnityEngine;using Unit烤恤鹇灭yEngine.UI;using System.Collections;using UnityEngine.EventSystems;public class TestMouseDrag : MonoBehaviour{private bool isMouseDrag;Vector3 pos;public Vector3 screenPosition;public Vector3 offset;void Start(){isMouseDrag = false;}void OnMouseDown(){screenPosition = Camera.main.WorldToScreenPoint(gameObject.transform.position);offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPosition.z));isMouseDrag = true;}void OnMouseDrag(){if (isMouseDrag){//Debug.Log("开始拖拽了");Vector3 currentScreenSpace = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPosition.z);Vector3 currentPosition = Camera.main.ScreenToWorldPoint(currentScreenSpace) + offset;gameObject.transform.position = currentPosition;}}void OnMouseUp(){isMouseDrag = false;}}

5、5. 点击Unity3d的运行按钮或者使用快捷键Ctrl+p

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