cocos2d-js 自定义事件监听派发

移动开发作者： 2024-08-24 22:10:01

转载于 http://www.cnblogs.com/kenkofox/p/3926797.html 熟悉js的dom事件或者flash事件的，基本都能立马明白cc.eventManager的用法。 cc.eventManager有两种注册监听器的方式，一种是原生事件，例如 cc.eventManager.addListener({ event: cc.EventListener.KEY

cc.eventManager.addListener({ 
    event: cc.EventListener.KEYBOARD,onKeyReleased: function(keyCode,event) { 
        if (keyCode == cc.KEY.back) { 
            cc.director.end(); 
        } 
 }},this);

    //进入后台 
    cc.eventManager.addCustomListener(cc.game.EVENT_HIDE,function(event){ 
        cc.log("cc.game.EVENT_HIDE!"); 
    }); 
    //恢复显示 
    cc.eventManager.addCustomListener(cc.game.EVENT_SHOW,function(event){ 
        cc.log("cc.game.EVENT_SHOW"); 
    });

/**
* Created by kenkozheng on 2014/8/20.
*/
var EventDispatcher = function() {
    this.init();
};
var p = EventDispatcher.prototype;

p._listenerMap = null;

p.init = function(){
    this._listenerMap = new Object();
};

/**
*
* @param event String
* @param callback function
*/
p.addListener = function(event,callback){
    if(!callback || !event)
        return;
    var listenerList = this._listenerMap[event];
    if(!listenerList)
        listenerList = this._listenerMap[event] = new Array();

    for (var i = 0; i < listenerList.length; i++) {
        if(listenerList[i] == callback)
            return;
    }
    listenerList.push(callback);
};

p.removeListener = function(event,callback){
    if(!callback || !event)
        return;
    var listenerList = this._listenerMap[event];
    if(listenerList)
    {
        for (var i = 0; i < listenerList.length; i++) {
            if(listenerList[i] == callback)
            {
                listenerList.splice(i,1);
                return;
            }
        }
    }
};

/**
*
* @param event String
*/
p.dispatchEvent = function(event){
    if(this._listenerMap[event])
    {
        var listeners = this._listenerMap[event].slice();
        for (var i = 0; i < listeners.length; i++) {
            listeners[i]();
        }
    }
}