EventsSystems(Unity3D)事件系统

当游戏的某一对象属性改变时,全局需要用到或已经注册该属性的地方都要即时改变,EventSystem使用通过事件监听的方法,实现了即时更新属性的功能

基本框架图解如下:

         

实现该功能的步骤如下:

1. 需要引用以下三个脚本,(来源于GameFrameWork的GameMainScriptsEvent文件夹)

      

2.在EventKey中写入需要注册事件系统的属性(作为事件监听的索引键值,单一类),例如:

           

3.创建一个玩家属性脚本(即图解中的属性管理区);例如       

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

public class PlayerInfoManagerTest
{
    #region 单例模式
    private static PlayerInfoManagerTest instance;

    public static PlayerInfoManagerTest Instance
    {
        get
        {
            if (instance == null)
            {
                instance = new PlayerInfoManagerTest();
            }
            return instance;
        }
    }
    private PlayerInfoManagerTest() { }
    #endregion


    private int playerGold;

    private string playerName;

    public int PlayerGold
    {
        get { return playerGold; }
        set
        {
            //之前玩家金币数值  !=  设置过来的数值
            if (playerGold != value)
            {
                playerGold = value;
                //数值发生变化  通知注册当前 金币发生变化的 界面
                EventDispatcher.TriggerEvent<int>(EventKeyTest.OnPlayerGoldChange, playerGold);

            }
        }
    }
    public string PlayerName {
        get { return playerName; }
        set {
            //if (!playerName.Equals(true))          
            if (playerName!=value)
            {
                playerName = value;
                EventDispatcher.TriggerEvent<string>(EventKeyTest.OnPlayerNameChage, playerName);
            }
        }
    }
}

4.创建事件管理脚本,用于注册事件,并写入事件发生时执行的方法

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


public class EventTest : MonoBehaviour {

    public Text goldText;
    public Text playerNameText;

    private string[] names = {"张三","李四","王五","赵柳","二哈","狗子" };
    // Use this for initialization
    void Start()
    {
        EventDispatcher.AddEventListener<int>(EventKeyTest.OnPlayerGoldChange, OnPlayerGoldValueChange);
        EventDispatcher.AddEventListener<string>(EventKeyTest.OnPlayerNameChage, OnPlayerNameChange);
    }

    void OnPlayerGoldValueChange(int gold)
    {
        goldText.text = gold.ToString();
    }
    void OnPlayerNameChange(string name)
    {
        playerNameText.text = name;
    }
    // Update is called once per frame
    void Update() {

    }
    private void OnDestroy()
    {
        EventDispatcher.RemoveEventListener<int>(EventKeyTest.OnPlayerGoldChange, OnPlayerGoldValueChange);
        EventDispatcher.RemoveEventListener<string>(EventKeyTest.OnPlayerNameChage, OnPlayerNameChange);
    }  
    //unityBtn事件
    public void OnClickToAddGold()
    {
        PlayerInfoManagerTest.Instance.PlayerGold += 100;
    }
    public void ClickReduceBtn() {
        PlayerInfoManagerTest.Instance.PlayerGold -= 50;
    }

    public void ClickChangeNameBtn() { 
        PlayerInfoManagerTest.Instance.PlayerName=names[Random.Range(0,names.Length)];
    }
}

5.创建需要注册监听玩家属性改变的界面的脚本;

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

public class TextPlayerGold : MonoBehaviour {

    // Use this for initialization
    void Start()
    {

        EventDispatcher.AddEventListener<int>(EventKeyTest.OnPlayerGoldChange, OnPlayerGoldChange);
    }

    private void OnPlayerGoldChange(int aaa)
    {
        gameObject.GetComponent<Text>().text = aaa.ToString();
    }
    // Update is called once per frame
    void Update () {
        
    }
}

完成.