先上效果图:

                 

 

 

 

我是用触发器做的。在信息滚动区的上方放了一个触发器，如上图所示，然后利用触发函数，在信息框触发事件时消除，并实例新的对话框。

挂在聊天框父物体的脚本：

using UnityEngine;using System.Collections;public class BGController : MonoBehaviour {    public GameObject chatPre;     // 聊天预设    private UIGrid grid;    private GameObject[] talks = new GameObject[4];    void Awake()    {        grid = transform.GetComponent
     
      ();        CreateCells();    }    private void CreateCells()    {        grid.maxPerLine = 1;        grid.cellWidth = Global.CWidth;        grid.cellHeight = Global.CHeight;        for (int i = 0; i < talks.Length; i++)         {            GameObject go = Instantiate(chatPre)as GameObject;            go.transform.SetParent(this.transform);               // 设置父物体            go.transform.localScale = Vector3.one;            grid.pivot = UIWidget.Pivot.Center;            grid.AddChild(go.transform,true);            CellModel m = CellModel.Create("系统：",i.ToString());            Cell c = go.GetComponent
      
       ();            c.Model = m;            talks[i] = go;        }    }    // 创建新的对话，需要相应的对话接口    public void AddNewCell()    {        GameObject go = Instantiate(chatPre)as GameObject;        go.transform.SetParent(transform);        go.transform.localPosition = new Vector3(0,-45,0);        go.transform.localScale = Vector3.one;        CellModel m = CellModel.Create(System.DateTime.Now.Day.ToString(),System.DateTime.Now.ToString());        Cell c = go.GetComponent
       
        ();        c.Model = m;    }}
       
      
     

挂在cell预设体上的脚本：

using UnityEngine;using System.Collections;public class Cell : MonoBehaviour {    private BGController bg;    private Rigidbody rig;    private CellModel model;    public UILabel title;    public UILabel chat;    public CellModel Model {        get {            return model;        }        set {            model = value;            UpdateChatView();        }    }    void Awake()    {        bg = GameObject.FindGameObjectWithTag("Container").GetComponent
     
      ();        rig = GetComponent
      
       ();        rig.useGravity = false;//        title.text = "";//        chat.text = "";    }    void Update ()     {        transform.localPosition += transform.up * Global.moveSpeed * Time.deltaTime;//        UpdateChatView();    }    void OnTriggerEnter(Collider other)    {        if(other.transform.name.Equals("Trigger"))        {//            Debug.Log(other.transform.name);            Destroy(this.gameObject);            bg.AddNewCell();        }    }    // 更新聊天框内容（可加接口）    private void UpdateChatView()    {        title.text = model.title;        chat.text = model.chat;    }}
      
     

 有两个全局脚本（CellModel和Global）

CellModel存放了cell的模型

using UnityEngine;using System.Collections;public class CellModel {    public string title;    public string chat;    private CellModel(){}    private CellModel(string title,string chat)    {        this.title = title;        this.chat = chat;    }    public static CellModel Create(string title,string chat)    {        return new CellModel(title,chat);    }}

Global存放全局静态变量

 

using UnityEngine;using System.Collections;public class Global {    public static float moveSpeed = 20f;    public static float CWidth = 270;    public static float CHeight = 30;}