using UnityEngine;using System.Collections;//ci此脚本挂在背景上public class SknapBg : MonoBehaviour {    public GameObject[] cells; //可捡起物品所能移动的框格。    public GameObject obj;  //捡起的那个物品    public string[] strName;  //能捡起的所有物品的图片名称    private bool isHaveSprite=false; //这个框格是否有物品了    //    void Update()    {        if (Input.GetKeyDown (KeyCode.P)) {            PickUP();                }    }    public void PickUP()    {        int index = Random.Range (0, strName.Length);        string name = strName [index];        //判断如果一个格子有物品，判断捡起的物品是否和他名字一样。        for (int i = 0; i < cells.Length; i++) {            if(cells[i].transform.childCount>0)            {             if(cells[i].GetComponentInChildren<Sknap>().obj.GetComponent<UISprite>().spriteName == name)                {                    cells[i].GetComponentInChildren<Sknap>().AddCount(1);                    isHaveSprite=true;                    break;                }            }        }                //在某个位置没有图片的时候才添加图片                if (isHaveSprite == false) {                                                for (int i=0; i<cells.Length; i++) {                                if (cells [i].transform.childCount == 0) {                                        GameObject go = NGUITools.AddChild (cells [i], obj); //NGUITools.AddChild                                        go.GetComponent<UISprite> ().spriteName = name;                                        go.transform.localPosition = Vector3.zero;                                        break;                                }                                        }                }        }}

using UnityEngine;using System.Collections;//挂在可捡起的物品上public class Sknap :UIDragDropItem {    protected override void OnDragDropRelease (GameObject surface)    {        base.OnDragDropRelease (surface);        if (surface.tag == "Cell") {                        this.transform.parent = surface.transform;                        this.transform.localPosition = Vector3.zero;                } else if (surface.tag == "Sknap") {            Transform trans=surface.transform.parent;            surface.transform.parent=this.transform.parent;            surface.transform.localPosition=Vector3.zero;            this.transform.parent=trans;            this.transform.localPosition=Vector3.zero;        }    }    public GameObject obj;     public UILabel label;    private int count;     public void AddCount(int num)    {        count += num;        label.text = count.ToString ();    }}