#include "application.h"//實(shí)現(xiàn)分布式應(yīng)用 泛洪算法

void application::initialize()
{ 
  last_seen_id=-1;
   msgcount=0;
   //設(shè)置 零 node點(diǎn)廣播信息 自消息為10s 調(diào)度一次
   if(ID==0)
	{
	   cMessage *msg=new cMessage("selfmessage");
	   msg->setKind(M_SELF);
	   scheduleAt(10,msg);
	}

}

void application::finish()
{
   ev<<"node"<<ID<<"generated/forwarded:"<<msgcount<<"message.\n";

}

void application::handleMessage(cMessage *msg)

{
   //判斷消息類型
    switch(msg->kind())

     { 
     case M_LOWHIGH:  //來在低層 若消息名與flood相同 用processflood函數(shù)處理 若不是 結(jié)束模擬
	{
     	  if(strcmp(msg->name(),"FLOOD")==0)
	   {
              processFlood(msg);
		return;
	
	   }

	ev<<"unknown message received from another node.\n";
	  endSimulation();
	}

       case M_SELF:   //若是自消息 產(chǎn)生新消息 設(shè)置類型為 m—highlow 并且追加flood—id=last seen id  將此消息通過                      //lowergate-out發(fā)送出去
        {
           cMessage *msgnew=new cMessage("FLOOD");//若是自消息 產(chǎn)生新消息
           msgnew->setKind(M_HIGHLOW);
	   msgnew->addPar("flood_id")=++last_seen_id;
	   send(msgnew,"lowergate_out");
	 
	//更新時(shí)間
	  UPDATECOLOR(msgcount+2);
	//跟新信息計(jì)數(shù)器
        msgcount++;
	//再次設(shè)置計(jì)時(shí)器 ,自消息設(shè)置
	scheduleAt(simTime()+GENERATIONDELAY,msg);
	break;




	}

    default:
        ev<<"unknown message received\n";
	endSimulation();//看不懂哦!!
     }
}

     void application::processFLood(cMessage *msg)//處理泛宏消息
 {
    if(ID==0)
	{
          delete msg;
	   return;
	}//若是發(fā)送節(jié)點(diǎn)，刪除

     //判斷此信息 之前是否收到過，若是刪除不轉(zhuǎn)發(fā) 若不是 先設(shè)置消息類型為m-highlow 然后通過lowergate-out們發(fā)送出去
      int flood_id=(int)msg->par("flood_id");
      if(flood_id<=last_seen_id)//這是干什么哦  看不懂 
         {
  	   delete msg;
	  return;
	}  

       msg->setKind(M_HIGHLOW);//若不是 傳送消息
	sendDelayed(msg,RETRANSMITDELAY,"lowergate_out");

        UPDATECOLOR(floo_id+2);//換色
        //跟新信息計(jì)數(shù)器
        msgcount++;
       last_seen_id=flood_id;//?????????????
}