EventsSystems(Unity3D)事件系統

當游戲的某一對象屬性改變時,全局需要用到或已經注冊該屬性的地方都要即時改變,EventSystem使用通過事件監聽的方法,實現了即時更新屬性的功能

基本框架圖解如下:

         

實現該功能的步驟如下:

1. 需要引用以下三個腳本,(來源於GameFrameWork的GameMain\Scripts\Event文件夾)

      

2.在EventKey中寫入需要注冊事件系統的屬性(作為事件監聽的索引鍵值,單一類),例如:

           

3.創建一個玩家屬性腳本(即圖解中的屬性管理區);例如       

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

public class PlayerInfoManagerTest
{
    #region 單例模式
    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
        {
            //之前玩家金幣數值  !=  設置過來的數值
            if (playerGold != value)
            {
                playerGold = value;
                //數值發生變化  通知注冊當前 金幣發生變化的 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.創建事件管理腳本,用於注冊事件,並寫入事件發生時執行的方法

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 = {"張三","李四","王五","趙柳","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.創建需要注冊監聽玩家屬性改變的界面的腳本;

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.