Unity3D拖動任意對象GameObject移動到任意地方

標籤：gameobject拖拽

今天不是很忙，研究了一下拖拽GameObject移動到任意位置，沿x軸和z軸移動,其他的也就不說了，上代碼：

using UnityEngine;using System.Collections;public class DragAndDrog : MonoBehaviour {    private GameObject target;    private bool isMouseDrag;    private Vector3 screenPosition;    private Vector3 offset;// Use this for initializationvoid Start () {}// Update is called once per framevoid Update () {        GameObjectDragAndDrog();}    //任意拖拽    private GameObject ReturnGameObjectDrag(out RaycastHit hit)    {        target = null;        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);        if (Physics.Raycast(ray.origin, ray.direction * 10, out hit))        {            target = hit.collider.gameObject;        }        return target;    }    //拖拽Updata    private void GameObjectDragAndDrog()    {        if (Input.GetMouseButtonDown (0))        {            RaycastHit hitInfo;            target = ReturnGameObjectDrag(out hitInfo);            if (target != null)            {                isMouseDrag = true;                screenPosition = Camera.main.WorldToScreenPoint(target.transform.position);                offset = target.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPosition.z));            }              }        if (Input.GetMouseButtonUp(0))        {            isMouseDrag = false;        }        if (isMouseDrag)        {            Vector3 currentScreenSpace = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPosition.z);            Vector3 currentPosition = Camera.main.ScreenToWorldPoint(currentScreenSpace) + offset;            target.transform.localPosition = new Vector3(currentPosition.x, currentPosition.y, currentPosition.z);        }    }}本指令碼可以載入任意一個對象GameObject，情境中所有帶Collider的對象，當滑鼠點擊拖動時候都可以沿x和z軸拖動。之前，都是要拖動那個GameObject就會寫一個指令碼掛在上面，今天實現了不用每一個要拖動的GameObject都掛載指令碼，也不用將移動的GameObject賦給某個變數。

本文出自 “Unity_3D技術探討” 部落格，請務必保留此出處http://caoliyong.blog.51cto.com/9944020/1740192

Unity3D拖動任意對象GameObject移動到任意地方