removeitemmsg.java

基于尚学堂坦克大战的基础上开发,支持多人对战,在线聊天,坦克大战网络版.

import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.SocketException;

public class RemoveItemMsg implements Msg {
	int msgType = Msg.REMOVE_ITEM_MSG;

	TankClient tc;

	private Item item;

	public RemoveItemMsg(TankClient tc,Item item) {
		this.item=item;
		this.tc = tc;
	}

	public void send(DatagramSocket ds, String IP, int udpPort) {

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		DataOutputStream dos = new DataOutputStream(baos);
		try {
			dos.writeInt(msgType);
			dos.writeInt(tc.tank.getTankId());
			dos.writeInt(tc.tank.blood);
			dos.writeInt(item.itemId);

		} catch (IOException e) {
			e.printStackTrace();
		}
		byte[] buf = baos.toByteArray();
		try {
			DatagramPacket dp = new DatagramPacket(buf, buf.length,
					new InetSocketAddress(IP, udpPort));
			ds.send(dp);
		} catch (SocketException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	public void parse(DataInputStream dis) {
		
		System.out.println("客户端接收一份服务端发来RemoveItemMsg的数据！");
        try {
        	int tankId = dis.readInt();
        	if(tankId==tc.tank.getTankId()) return;
        	
        	int blood = dis.readInt();
        	int itemId = dis.readInt();
        	
        	for(int i=0; i<tc.playerTanks.size();i++){
        		Tank tank = tc.playerTanks.get(i);
        		if(tank.getTankId()==tankId){
        			tank.blood=blood;
        		}
        	}
        	
        	for(int i=0; i<tc.items.size(); i++){
        		Item item = tc.items.get(i);
        		if(item.itemId==itemId){
        			tc.items.remove(item);
        		}
        	}
		} catch (IOException e) {
			e.printStackTrace();
		}
        
        
	}

}