Thread: 2D JAVA GAME TCP SERVER/CLEINT SUPPORT HELP?

Hello Folks,

my name is MdeeY......i am new to this forum i just registered......i really need some help with 2d game TCP multiplayer.....the is about Spaceship Multiplayer i want to use TCP client and server to enable two people to control the spaceships from two computers or one computer by running the instance of the server then two instance of the client.......any help will be greatly appreciated

Yes i have written the program everything is work...i can drive the spaceship on one computer but i haven't implemented the network part.........if u have skype or any other IM we can chat and i will show u my code......thanks

ok i understand.....what does SSCCE stands for please ?

--- Update ---

I'm new here Norm please help me........the Program is school assessment and is due to be submitted in 1 week time.....thanks!

 
//Import PACKAGES
import java.net.*;
import java.io.*;
import java.util.logging.Logger;
import javax.swing.Timer;
import java.awt.event.*;
import java.awt.*;
import java.util.*;
import java.lang.*;
import javax.swing.*;
import java.applet.*;
 
 
public class SpaceshipClient extends JPanel implements ActionListener, KeyListener
{
 
       public ImageIcon pictures0[];// This is the array of pictures0 that will be animated
       public ImageIcon pictures1[];// This is the array of pictures0 that will be animated
 
       public int player1spaceship = 13, player2spaceship = 13;
       public int x = 500, y = 368, x0 = 550, y0 = 368;// X and Y Cordinates for Positioning the Space ships
       public Timer AnimationTimer;//Timer to drive the animation and start the races
       public int Velocity = 0, Velocity1 = 0;// This keeps track of the two Space ships speed
       public String send = null;
 
 
   public SpaceshipClient()
   {
      try //Try Block to Display the Welcome Screen
 
         {
            //display a welcome dialog (JOptionPane) that includes the rules
 
          JOptionPane.showMessageDialog(null,"GAME INSTRUCTIONS \n\n" +"This game is a multiplayer space ship game\n" + "Player 1 space ship is Red\n" + "Player 2 space ship is Blue\n\n" + "The Object of this game is to\n" + "drive the two space ships around\n" + "the race track and try to reach\n" + "the finishing line as quick as possible\n" + "to gain first position while avoiding\n"+ "collision with the wall, center astroid and each other.\n\n" + "PLAYER 1 CONTROLS\n\n" + "W = Accelaration\n" + "S = Decelaration\n" + "D = Turn right\n" + "A = Turn left\n\n" + "PLAYER 2 CONTROLS\n\n" + "I = Accelaration\n" + "K = Decelaration\n" + "L = Turn right\n" + "J = Turn left\n");
 
         }
 
 
 
       catch(Exception e){
         }
 
 
 
 
       try //Try Block to Play the Sound
         {
            URL eng = this.getClass().getResource ("Sounds/hotidle.wav");// This Loads the Sound Effect from the Directory
            AudioClip snd = JApplet.newAudioClip(eng);//Creating Instance of the Audio Clip
            snd.play();//This will play the sound effect only once
 
         }
 
 
 
       catch(Exception e){
         }
 
 
 
 
    }     
 
 
 
 
 
 
 
   {
           int i = 0;//This sets the number of pictures0 to Zero since its an array
           pictures0 = new ImageIcon[16];//Creating the instance of pictures0
           pictures1 = new ImageIcon[16];//Creating the instance of pictures0
 
 
           //This will allow the Key Presses 
           addKeyListener(this);
           setFocusable(true);
           setFocusTraversalKeysEnabled(false);
 
           // Method to load the 16 pictures0
           while(i < 16){
 
               pictures0[i] = new ImageIcon("player1/spaceship"+i+".png"); // This loads the pictures0 from the directory 
 
               pictures1[i] = new ImageIcon("player2/spaceship"+i+".png");// This loads the pictures0 from the directory 
 
               i++;// starts the animation of the pictures0
           } 
 
   }
 
 
 
 
	  public void paintComponent( Graphics g ) {
 
 
	  super.paintComponent(g);// This calls the super class paintComponent
 
	   Color c1 = Color.black;
      g.setColor( c1 );    
      g.fillRect(50, 100, 750, 500);  // surrounding space  
 
     // Color c2 = new Color(210, 105, 30);
      //g.setColor( c2 );
      //g.fillRect( 150, 200, 550, 300 ); // asteroid
 
      Color c3 = Color.white;
      g.setColor( c3 );
      g.drawLine( 425, 500, 425, 700 ); // finish line
 
      g.setColor(Color.white);
      g.drawRect(100, 150, 650, 400);// mid-lane marker
 
		Color c4 = Color.blue;
      g.setColor( c4 );
      g.drawLine( 200, 250, 570, 325 );     
 
           //draw the two Space ships to the screen, at the white line 
      pictures0[player1spaceship-1].paintIcon(this, g, y, x);
 
      pictures1[player2spaceship-1].paintIcon(this, g, y0, x0);
 
		Image image;
 
  		ImageIcon i = new ImageIcon("images/near1.jpg");
  		image = i.getImage();
  		g.drawImage(image,150, 200, 520, 280, null);
 
 
 }
 
 
 
 
 
        //This method is used to respond to Timers' event
       public void actionPerformed( ActionEvent e )
       {
 
            //Using Rectangles to detect collision between the Space ships and the Wall walls
            Rectangle  Wall = new Rectangle(49, 100, 715, 452);
            Rectangle  Asteroid = new Rectangle(150, 200, 520, 280);
            Rectangle Finishline = new Rectangle(425, 500, 1, 615);
 
            int cordinate_x = x;
            int cordinate_y = y;
            int cordinate_x0 = x0;
            int cordinate_y0 = y0;
 
            //Move the Space ship forward base on the direction its facing
            if(player1spaceship == 1)
 
            { 
 
            cordinate_x -=Velocity1;
 
            }
 
 
 
            else  if(player1spaceship == 5)
            { 
 
            cordinate_y +=Velocity1; 
 
            }
 
 
 
           else if (player1spaceship == 9)
 
             { 
 
             cordinate_x +=Velocity1;
 
             }
 
 
 
 
 
            else if (player1spaceship == 13)
 
            { 
 
            cordinate_y -=Velocity1;
 
            }
 
 
 
 
            if(player2spaceship == 1)
 
            { 
 
            cordinate_x0 -=Velocity; 
 
            }
 
 
 
 
            else if(player2spaceship == 5)
 
              { 
 
              cordinate_y0 +=Velocity;
 
              }
 
 
 
 
            else if (player2spaceship == 9)
 
            { 
 
            cordinate_x0 +=Velocity;
 
             }
 
 
 
 
 
 
            else if (player2spaceship == 13)
 
             {
 
             cordinate_y0 -=Velocity;
 
              }
 
 
 
 
 
            //Using Rectangles to detect collision between the two Space ships
            Rectangle  spaceship1 = new Rectangle(cordinate_y, cordinate_x, 50, 50);
            Rectangle  spaceship2 = new Rectangle(cordinate_y0, cordinate_x0, 50, 50);
 
               //This Detects the Collision between the Walls of the race track and the two Space ships                        
            if(!Asteroid.intersects(spaceship1) && Wall.inside(cordinate_y,cordinate_x) && (!spaceship1.intersects(spaceship2)))
               {
 
                  y = cordinate_y;
                  x = cordinate_x;
 
                  //This checks and see if Player 1 hits Player 2 then the game ends
                  if(spaceship1.intersects(spaceship2))
                     System.exit(0);  
               }  
 
 
 
 
 
                  if(spaceship1.intersects(spaceship2))
               {
 
               URL eng = this.getClass().getResource ("Sounds/CARCRASH.WAV");// This Loads the Sound Effect from the Directory
               AudioClip snd = JApplet.newAudioClip(eng);//Creating Instance of the Audio Clip
               snd.play();//Message to be displayed when the two Space ships crashed / collide
               System.out.println("Space ships Crashed Game Over \n" + "Connection Lost fROM server" );
 
               //Displays the a Message when the two Space ships crashed
               JOptionPane.showMessageDialog(null,"Space ships crashed!! \n\n" + "*****Game Over***\n\n" + "hit OK to Exit");
 
               System.exit(0);//Terminates the Game if Collision happens    
               }
 
 
 
 
 
 
					 if(!Asteroid.intersects(spaceship1) && Wall.inside(cordinate_y,cordinate_x) && (!spaceship1.intersects(spaceship2)))
               {
 
                  y = cordinate_y;
                  x = cordinate_x;
 
                  //This checks and see if Player 1 hits Player 2 then the game ends
                  //if(Asteroid.intersects(spaceship2))
                     //System.exit(0);  
               }
 
 
 
 
 
 
 
                  if(Asteroid.intersects(spaceship2))
               {
 
					Velocity  = 0;
					Velocity1 = 0; 
 
               URL eng = this.getClass().getResource ("Sounds/geardown.WAV");// This Loads the Sound Effect from the Directory
               AudioClip snd = JApplet.newAudioClip(eng);//Creating Instance of the Audio Clip
               snd.play();//Message to be displayed when the two Space ships crashed / collide
 
 
               }
 
 
 
 
 
 
					 if(!Asteroid.intersects(spaceship1) && Wall.inside(cordinate_y,cordinate_x) && (!spaceship1.intersects(spaceship2)))
               {
 
                  y = cordinate_y;
                  x = cordinate_x;
 
                  //This checks and see if Player 1 hits Player 2 then the game ends
                  //if(Asteroid.intersects(spaceship2))
                     //System.exit(0);  
               } 
 
 
 
 
 
 
					  if(spaceship1.intersects(Finishline))
               {
 
               URL eng = this.getClass().getResource ("Sounds/ClappingCrowd.wav");
               AudioClip snd = JApplet.newAudioClip(eng);               
					snd.play();
 
 
               JOptionPane.showMessageDialog(null,"CONGRATULATIONS!!\n\n" + "Player 1\n\n"+ "YOU PLACED FIRST");
 
               System.exit(0);   
               }
 
 
 
 
 
 
						  if(spaceship2.intersects(Finishline))
               {
 
               URL eng = this.getClass().getResource ("Sounds/ClappingCrowd.wav");
               AudioClip snd = JApplet.newAudioClip(eng);               
					snd.play();
 
 
               JOptionPane.showMessageDialog(null,"CONGRATULATIONS!!\n\n" + "Player 2\n\n"+ "YOU PLACED FIRST");
 
               System.exit(0);   
               }
 
 
 
 
 
 
                  if(Asteroid.intersects(spaceship1))
               {
                   Velocity = 0;
					    Velocity1 =0; 
 
               URL eng = this.getClass().getResource ("Sounds/geardown.WAV");
               AudioClip snd = JApplet.newAudioClip(eng);               
					snd.play();
 
 
               }
 
 
 
 
 
 
 
 
            //This Detects the Collision between the Walls of the race track and the two Space ships
            if(!Asteroid.intersects(spaceship2) && Wall.inside(cordinate_y0,cordinate_x0) && (!spaceship2.intersects(spaceship1)))
            {
 
                  y0 = cordinate_y0;
                  x0 = cordinate_x0;
 
                  //This checks and see if Player 2 hits Player 1 then the game ends
                  if(spaceship2.intersects(spaceship1))
                     System.exit(0);                       
               }
 
 
 
 
 
            repaint();//Refresh the Screen
 
 
 
 
         }
 
      //Method to start the animation / Race    
      public void Start_Accelaration()
 
         {
         AnimationTimer = new Timer(40, this);
         AnimationTimer.start();
 
         }
 
 
 
 
 
 
 
 
 
   //Returns the minimum size of the animation  
       public Dimension getMinimumSize()
 
          { 
          return getPreferredSize(); 
          }
   //Ends getMinimumsize method
 
 
 
 
 
 
 
	//Returns the preferred size of the animation
      public Dimension getPreferredSize()
 
          {
 
          return new Dimension( 850, 650); 
 
 
			 }
 
 
 
 
 
 
 
   //end getPreferredsize method
// Get Key pressed by user
   public void keyTyped(KeyEvent e)
   {
 
 
		throw new UnsupportedOperationException("Not supported yet.");
 
 
	}
 
 
 
   //Invoked when a key has been pressed.     
      public void keyPressed(KeyEvent e) 
          {
 
         int Code = e.getKeyCode();
          {  
 
			 if(Code == KeyEvent.VK_R){
 
				Restart_Accelaration();
 
 
			 }
 
 
 
 
 
 
          //Player 2
 
            if (Code == KeyEvent.VK_I)//If Player 2 pressed I, Space ship speed increases by 10
               {
 
 
					URL eng = this.getClass().getResource ("Sounds/tirespin.wav");// This Loads the Sound Effect from the Directory and play it when I key is pressed
               AudioClip snd = JApplet.newAudioClip(eng);
               snd.play();
 
 
                  Velocity +=1;
 
 
                  if(Velocity1>10) 
 
                  Velocity1 = 10;
 
               }
 
 
 
 
 
 
            if (Code == KeyEvent.VK_K)//If Player 2 pressed K, Space ship speed decreases by 10
               {
                  Velocity -=1;
 
                     if(Velocity1<0) 
 
                     Velocity1 = 0;
 
               }
 
 
 
 
 
 
            if (Code == KeyEvent.VK_L)//If Player 2 pressed L, Space ship turns 22.5 Degrees Right           
               player2spaceship = (((player2spaceship+1)>16)? 1 : (player2spaceship+1));
 
 
 
 
 
            if  (Code == KeyEvent.VK_J)//If Player 2 pressed J, Space ship turns 22.5 Degrees Left
 
               player2spaceship =  (((player2spaceship-1)<1)? 16 : (player2spaceship-1));
 
 
 
 
				//Player 1
 
 
            if (Code == KeyEvent.VK_W)//If Player 1 pressed W, Space ship speed increases by 10
               {
 
 
					URL eng = this.getClass().getResource ("Sounds/tirespin.wav");// This Loads the Sound Effect from the Directory
               AudioClip snd = JApplet.newAudioClip(eng);//Creating Instance of the Audio Clip
               snd.play();
 
 
                 Velocity1 +=1;
 
                     if(Velocity1>10)
 
                      Velocity1 = 10;
 
               }
 
 
 
 
 
 
            if (Code == KeyEvent.VK_S)//If Player 1 pressed S, Space ship speed decreases by 10
               {
 
					URL eng = this.getClass().getResource ("Sounds/geardown.wav");// This Loads the Sound Effect from the Directory
               AudioClip snd = JApplet.newAudioClip(eng);//Creating Instance of the Audio Clip
               snd.play();
 
 
                  Velocity1 -=1;
 
                     if(Velocity1<0)
 
 
 
                     Velocity = 0;
 
               }
 
 
 
 
 
 
            if (Code == KeyEvent.VK_D)
 
               player1spaceship = (((player1spaceship+1)>16)? 1 : (player1spaceship+1));//If Player 1 pressed D, Space ship turns 22.5 Degrees Right
 
 
             if (Code == KeyEvent.VK_A)
 
               player1spaceship =  (((player1spaceship-1)<1)? 16 : (player1spaceship-1));//If Player 1 pressed A, Space ship turns 22.5 Degrees Left
 
         }
     } 
 
 
 
 
 
 
   //Invoked when a key has been Released.
      public void keyReleased(KeyEvent e) 
      {
 
      }
   }

import java.io.*;
import java.net.*;
 
class TCPserver
{
public static void main(String args[]) throws Exception 
{
String line;
String mySentence;
ServerSocket service = new ServerSocket(5000);
 
while(true)
{
Socket server = service.accept();
BufferedReader is =
new BufferedReader(new InputStreamReader(server.getInputStream()));
DataOutputStream os = new DataOutputStream(server.getOutputStream());
line = is.readLine();
System.out.println("Received: " + line);
mySentence = line.toUpperCase() + '\n';
os.writeBytes(mySentence);
}
}
}

--- Update ---

 
import java.io.*;
import java.net.*;
 
class TCPclient
{
public static void main(String argv[]) throws Exception
{
String sentence;
String modifiedSentence;
 
while (true)
{
BufferedReader is = new BufferedReader( new InputStreamReader(System.in));
Socket clientSocket = new Socket("localhost", 5000);
DataOutputStream os = new DataOutputStream(clientSocket.getOutputStream());
BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
sentence = is.readLine();
os.writeBytes(sentence + '\n');
modifiedSentence = inFromServer.readLine();
System.out.println("FROM SERVER: " + modifiedSentence);
clientSocket.close();
}
}
}

ok.....i edited it

yes......code #9 is the client/server program i coded.....so i need u to help me to make the #9 work with #7 two clients should be able to control their space ship over a network in realtime while both players can see the movement of each other's spaceships........

what kind of drivers Norm? i normally run the client/server program from Command prompt in Windows......run the server first then client.....and then they both send/receive message vice versa........and what part of post #7 will have to be rewritten ?

ok.....i get it......

 public void keyPressed(KeyEvent e) 
          {
 
}

please point me to the right direction.....give me some guides or examples

Firstly I know coordinates is probably the wrong terminology? I'd assume i'd simply be passing the x and y variables, but coordinates describe it better I feel.

Now I need to have a Server which can be accessed by 2 clients, it is a racing game and it requires each client to be able to maneuver a racecar simultaniously, each using a different control scheme but that's neither here nor there.

I was hoping you would be able to assist me when it came to sending the x and y positions of a racecar to the server and having the server send them onto the next player and vice versa to allow both racecars to move at the same time on each clients window. So far i've only done the simple server stuff, such as the knock knock server on the sun website, and a simple echo server which repeats a string I send to the server.

When I tried to use int instead of string I recieved an error that the int I wanted to pass was dynamic (obviously changes with each movement) and cannot be passed as static (using readInt and writeInt).

So any help on how to create the wanted movement on both client windows through the server would be appreciated.

Thanks

is not only X and Y........the space ship (player 1 ) is driven with W,A,S,D keys W to accelerate......A to turn left......S to decelerate....and D to turn right............so the objective now is to create a one Server to host two Client......the Server receives the keystroke from Client one and then send it to Client two and vice versa.....while the both Clients can see the movement of each other in realtime.......i did some research today i realised this can be done with "Serialisation " but i don't know how to implement that......i really need some help with this Norm...........

The Server should be able to send ( co-ordinates, space ship crash and exit communications; concurrent controls)

--- Update ---

which i believe they are all integers.....

these are the two codes i want them to be serialized between the two clients through the server

 
 int cordinate_x = x;
            int cordinate_y = y;
            int cordinate_x0 = x0;
            int cordinate_y0 = y0;
 
            //Move the Space ship forward base on the direction its facing
            if(player1spaceship == 1)
 
            { 
 
            cordinate_x -=Velocity1;
 
            }
 
 
 
            else  if(player1spaceship == 5)
            { 
 
            cordinate_y +=Velocity1; 
 
            }

 
* * * * * *if (Code == KeyEvent.VK_K)//If Player 2 pressed K, Space ship speed decreases by 10
* * * * * * * *{
* * * * * * * * * Velocity -=1;
* * * * * * * * **
* * * * * * * * * * *if(Velocity1<0)*
* * * * * * * * **
* * * * * * * * * * *Velocity1 = 0;
* * * * * * * * **
* * * * * * * *}