所以我正在开发一款非常简单的多人 Java 游戏，只需点击屏幕，您的玩家就会直线移动到该位置，并向所有其他连接的玩家显示您的玩家移动，这里是三个类：
机器人：
import java.applet.Applet;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.ArrayList;
public class Bots extends Applet implements MouseListener, Runnable{
Thread gameLoop;
ArrayList<Player> players = new ArrayList<Player>();
//Socket stuff for multiplayer client
final static String SERVER_ADDR = "localhost";
final static int SERVER_PORT = 1025;
static Socket socket;
static volatile BufferedReader br;
static PrintWriter pw;
//Double buffer stuff
Graphics g;
Image offscreen;
Dimension dim;
@Override
public void run() {
//Starts the main game loop
Thread t = Thread.currentThread();
//Checks to see if the thread is alive
while (t == gameLoop){
try{
Thread.sleep(1000/60);
//Repaints the screen
players.get(0).move();
repaint();
if (socket != null){
sendMove();
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void start(){
gameLoop = new Thread(this);
gameLoop.start();
}
public void stop(){
gameLoop = null;
}
public void init(){
this.setSize(640,480);
dim = this.getSize();
addMouseListener(this);
//More double buffer stuff
offscreen = createImage(this.getSize().width,this.getSize().height);
g = offscreen.getGraphics();
//Adds the initial player
players.add(new Player(320,240,8,8,"Jeremy"));
multiplayer();
}
public void paint(Graphics bufferGraphics){
g = offscreen.getGraphics();
g.clearRect(0,0,dim.width,dim.height);
g.setColor(Color.BLACK);
for (Player player: players){
g.fillOval(player.x, player.y, player.width, player.height);
}
bufferGraphics.drawImage(offscreen,0,0,this);
}
public void multiplayer(){
try {
socket = new Socket(SERVER_ADDR, SERVER_PORT);
InputStreamReader isr;
isr = new InputStreamReader(socket.getInputStream());
br = new BufferedReader(isr);
pw = new PrintWriter(socket.getOutputStream(), true);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
multiplayerThread();
}
public void sendMove(){
//pw.println(players.get(0).name+":X"+players.get(0).x+":Y"+players.get(0).y);
}
public void multiplayerThread(){
new Thread(){
public void run() {
String line;
try {
while ((line = br.readLine()) != null) {
boolean newClient = true;
for (Player player: players){
if (line.startsWith(player.name)){
if (line.startsWith(players.get(0).name)){
//Do nothing
newClient = false;
} else {
String[] tempLine = line.split(":");
player.x = Integer.parseInt(tempLine[1].substring(1));
player.y = Integer.parseInt(tempLine[2].substring(1));
newClient = false;
}
}
System.out.println(line);
}
if (newClient && !line.contains("Welcome")){
String[] tempLine = line.split(":");
players.add(new Player (Integer.parseInt(tempLine[1].substring(1)),Integer.parseInt(tempLine[2].substring(1)),8,8,tempLine[0].substring(0)));
}
}
}
catch (IOException ioe) {
}
}
}.start();
}
@Override
public void mouseClicked(MouseEvent me) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent me) {
// TODO Auto-generated method stub
players.get(0).x2 = me.getX();
players.get(0).y2 = me.getY();
players.get(0).calculateMove();
}
@Override
public void mouseReleased(MouseEvent arg0) {
// TODO Auto-generated method stub
}
public void update(Graphics g)
{
paint(g);
}
}
球员等级：
import java.awt.Rectangle;
public class Player {
public String name;
public int x;
public int y;
public int width;
public int height;
public int x2;
public int y2;
public int longest;
public int numerator;
public int shortest;
public int dx1,dy1,dx2,dy2;
public boolean moving;
public Player(int x, int y, int width, int height, String name) {
this.x = x;
this.y = y;
this.x2 = x;
this.y2 =y;
this.width = width;
this.height = height;
this.name = name;
}
public Rectangle getBounds(){
Rectangle r;
r = new Rectangle(x - width/2, y-height/2,width,height);
return r;
}
public void move(){
if (this.x2 != this.x && this.y2 != this.y){
this.numerator += this.shortest ;
if (!(this.numerator<this.longest)) {
this.numerator -= this.longest ;
this.x += this.dx1 ;
this.y += this.dy1 ;
} else {
this.x += this.dx2 ;
this.y += this.dy2 ;
}
this.moving = false;
}
}
public void calculateMove(){
int w = x2 - x ;
int h = y2 - y ;
int dx1 = 0, dy1 = 0, dx2 = 0, dy2 = 0 ;
if (w<0) dx1 = -1 ; else if (w>0) dx1 = 1 ;
if (h<0) dy1 = -1 ; else if (h>0) dy1 = 1 ;
if (w<0) dx2 = -1 ; else if (w>0) dx2 = 1 ;
int longest = Math.abs(w) ;
int shortest = Math.abs(h) ;
if (!(longest>shortest)) {
longest = Math.abs(h) ;
shortest = Math.abs(w) ;
if (h<0) dy2 = -1 ; else if (h>0) dy2 = 1 ;
dx2 = 0 ;
}
this.shortest = shortest;
this.longest = longest;
this.numerator = longest >> 1 ;
this.dx1 = dx1;
this.dy1 = dy1;
this.dx2 = dx2;
this.dy2 = dy2;
this.moving = true;
}
}
最后是我的 BotsServer 类：
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
class BotsServer
{
private final static int PORT_NO = 1025;
private ServerSocket listener;
private List<Connection> clients;
BotsServer() throws IOException
{
listener = new ServerSocket(PORT_NO);
clients = new ArrayList<Connection>();
System.out.println("listening on port "+PORT_NO);
}
void runServer()
{
try
{
while (true)
{
Socket socket = listener.accept();
System.out.println("accepted connection");
Connection con = new Connection(socket);
synchronized(clients)
{
clients.add(con);
con.start();
con.send("Welcome!");
}
}
}
catch (IOException ioe)
{
System.err.println("I/O error: "+ioe.getMessage());
return;
}
}
private class Connection extends Thread
{
private volatile BufferedReader br;
private volatile PrintWriter pw;
private String clientName;
Connection(Socket s) throws IOException
{
br = new BufferedReader(new InputStreamReader(s.getInputStream()));
pw = new PrintWriter(s.getOutputStream(), true);
}
@Override
public void run()
{
System.out.println("test");
String line;
try
{
while ((line = br.readLine()) != null){
System.out.println(line);
send(line);
}
}
catch (IOException ioe)
{
System.err.println("I/O error: "+ioe.getMessage());
}
finally
{
synchronized(clients)
{
clients.remove(this);
}
}
}
private void send(String message)
{
pw.println(message);
}
}
public static void main(String[] args)
{
try
{
System.out.println("ChatServer starting");
new BotsServer().runServer();
}
catch (IOException ioe)
{
System.err.println("unable to create server socket");
}
}
}
我认为问题出在 BotsServer 类中，我提出：
System.out.println("test");
在运行中，但只有在客户端第一次连接时才会被调用，它应该循环吗？任何帮助都很棒！谢谢！