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8.3

array is not printed on the terminal [problem with code]

Asked by perdoname_ in Java Programming Language, Programming Languages

Tags: Java

Hello Experts,

Im trying to run the code below as to parse the xml and then print the elements on the terminal as 2D array but instead of that it returns :
type: floor
x: 18
y: 14
renderhint
tile
type: wall
x: 19
y: 14
...
...


What can i do as to load the walls and other things of map instead of that ???

Thanks in advance!
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import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.concurrent.Semaphore;
 
import javax.swing.text.Element;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
 
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.w3c.dom.Node;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.dom.*;
 
 
class LODServer {
     
      ServerBase<ClientHandler> server = null;
 
      /*
       * * Once the given number of players has connected, * the instance of
       * ServerBase<ClientHandler> returns * an array of them.
       */
      ArrayList<ClientHandler> clients = null;
 
      /*
       * * This is the data that encodes the state of the game. * The labyrinth is
       * stored in a 2D array with * numbers corresponding to the contents of each
       * location.
       */
      static final int TREASURE = 1;
      /* Larger positive numbers are several lots of treasure */
      static final int EMPTY = 0;
      static final int HEALTH = -1;
      static final int LANTERN = -2;
      static final int SWORD = -3;
      static final int ARMOUR = -4;
      static final int EXIT = -5;
      static final int WALL = -6;
 
      int mapWidth = 5;
      int mapHeight = 5;
      int map[/* mapHeight */][/* mapWidth */] = {
                  { WALL, WALL, ARMOUR, WALL, WALL },
                  { WALL, EXIT, EMPTY, TREASURE, TREASURE },
                  { LANTERN, TREASURE, EMPTY, HEALTH, LANTERN },
                  { WALL, SWORD, EMPTY, ARMOUR, TREASURE },
                  { WALL, WALL, SWORD, WALL, WALL } };
 
      boolean gameStarted = false;
      boolean gameFinished = false;
      int goal = 2; // The amount of treasure to collect
 
      /*
       * * The server has to be able to wait until the end of the player's turn. *
       * It uses a semaphore to do this. * The player acquires the semaphore at
       * the start of the turn * and releases it at the end of the turn. * This
       * allows the server to wait until the end of the player's turn by * simply
       * waiting for the semaphore to be released.
       */
      Semaphore playerTurn = new Semaphore(1);
 
      public void setup(int port, int players, String map) throws java.io.IOException {
	/*
            // Limit to one player
            if (players > 1) {
                  System.err
                              .println("The current implementation is limited to one player.");
                  players = 1;
            }
	*/
 
            // Create the object to handle the incoming connections
            // ( you don't have to understand how this works )
            // If the last arguement is true then all incoming and outgoing messages
            // to the instances of ClientHandler will be logged.
            // Set to false if you don't want this.
            server = new ServerBase<ClientHandler>(ClientHandler.class, players,
                        port, true);
            xmlParser(map);
      } // void setup (int port, int players, String map)
 
    
      Document document = null;
 
      public void readMap() {
 
//root
org.w3c.dom.Element map = document.getDocumentElement();
 
//title
String title = map.getAttribute("name");
System.out.println("name: "+title);
 
//goal
String goal = map.getAttribute("goal");
System.out.println("goal: "+goal);
 
//width & height
String width = map.getAttribute("width");
String height = map.getAttribute("height");
System.out.println("dimensions: "+width+"x"+height);
 
//children
NodeList mapChildren = map.getChildNodes();
for(int i=0;i<mapChildren.getLength();i++)
{
    Node mapChild = mapChildren.item(i);
    NamedNodeMap mapChildAttr = mapChild.getAttributes();
 
    //random-item
    if("random-item".equals(mapChild.getNodeName()))
    {
        System.out.println("random-item");
 
        //amount
        String amount = mapChildAttr.getNamedItem("amount").getNodeValue();
        System.out.println("amount: "+amount);
 
        //type
        String type = mapChildAttr.getNamedItem("type").getNodeValue();
        System.out.println("type: "+type);
    }
    //tile
    else if("tile".equals(mapChild.getNodeName()))
    {
        System.out.println("tile");
 
        //startlocation
        Node start = mapChildAttr.getNamedItem("startlocation");
        if(start != null)
        {
            String startlocation = start.getNodeValue();
            System.out.println("startlocation: "+startlocation);
        }
 
        //type
        String type = mapChildAttr.getNamedItem("type").getNodeValue();
        System.out.println("type: "+type);
 
        //x
        String tx = mapChildAttr.getNamedItem("x").getNodeValue();
        System.out.println("x: "+tx);
 
        //y
        String ty = mapChildAttr.getNamedItem("y").getNodeValue();
        System.out.println("y: "+ty);
 
        //children
        NodeList tileChildren = mapChild.getChildNodes();
        for(int j=0;j<tileChildren.getLength();j++)
        {
            Node tileChild = tileChildren.item(j);
            NamedNodeMap tileChildAttr = tileChild.getAttributes();
 
            //item
            if("item".equals(tileChild.getNodeName()))
            {
                System.out.println("item");
 
                //type
                Node ntype = tileChildAttr.getNamedItem("type");
                if(ntype != null)
                {
                    String itype = ntype.getNodeValue();
                    System.out.println("type: "+itype);
                }
            }
            //renderhint
            else if("renderhint".equals(tileChild.getNodeName()))
            {
                System.out.println("renderhint");
            }
        }
    }
}
      }
 
    public void xmlParser(String xmlMap)
        throws IOException
    {
        try
        {
            //parse settings
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            dbFactory.setValidating(false);
            dbFactory.setIgnoringElementContentWhitespace(true);
 
            //parse document
            DocumentBuilder builder = dbFactory.newDocumentBuilder();
            document = builder.parse(new File(xmlMap));
 
            //create tmp map
            File tmpFile = File.createTempFile("__tmp__", "");
            File dtdFile = new File("map.dtd");
            Result result = new StreamResult(tmpFile);
 
            //transform xml
            TransformerFactory tFactory = TransformerFactory.newInstance();
            Transformer transformer = tFactory.newTransformer();
            transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, dtdFile.getAbsolutePath());
            transformer.transform(new DOMSource(document), result);
 
            //parse document again
            dbFactory.setValidating(true);
            builder = dbFactory.newDocumentBuilder();
            document = builder.parse(tmpFile);
        }
        catch(TransformerConfigurationException e)
        {
            System.out.println(e);
        }
        catch(TransformerException e)
        {
            System.out.println(e);
        }
        catch(ParserConfigurationException e)
        {
            System.out.println("error with new document builder");
        }
        catch(org.xml.sax.SAXException e)
        {
            System.out.println("Error with parser file, xml file does not conform to map DTD");
            System.out.println(e);
            System.out.println("Exiting game");
            System.exit(1);
        }
 
        //... process document ...
        readMap();
    }
 
      public void play() throws InterruptedException {
 
            // Wait for all of the clients to connect
            clients = server.getConnections();
            System.out.println(" done.");
 
            // Any set up for the game that is specific
            // to the clients goes here.
 
            // Give each ClientHandler a reference to this object
            // and thus access to the game data
            for (ClientHandler c : clients) {
                  c.server = this;
            }
 
            // Fix the player's starting location
            clients.get(0).x = 2;
            clients.get(0).y = 2;
 
            // Let each client know the amount of treasure it needs
            for (ClientHandler c : clients) {
                  c.serverGoal(goal);
            }
 
            // Play the game!
            System.out.println("Starting the game.");
            gameStarted = true;
            while (gameFinished == false) {
 
                  // Check that there is at least one player connected
                  if (clients.size() <= 0) {
                        System.out.println("Game abandoned");
                        break;
                  }
 
                  // Each player takes a turn
                  // for (ClientHandler c : clients) {
                  ClientHandler c = clients.get(0);
 
                  // Start turn
                  System.out
                              .println("Starting the turn of player \"" + c.name + "\"");
                  c.startTurn(); // During this, c will acquire() the playerTurn
                                          // semaphore
 
                  // Wait for the player to finish their turn
                  // (they will release() the semaphore at the end of their turn)
                  try {
                        playerTurn.acquire();
                  } catch (InterruptedException e) {
                        // This shouldn't happen in normal operation
                        // If it happens, it is because this code
                        // has been used in a larger bit of software
                        // thus the wrapper can deal with this condition
                        throw (e);
                  }
                  System.out.println("End of turn");
 
                  // Check to see if the current player has won
                  // (gameFinished is set to true in ClientHandler.clientEndTurn())
                  if (gameFinished == true) {
 
                        System.out.println("Game over, \"" + c.name
                                    + "\" is the winner");
 
                        // Tell the player they have won
                        c.serverMessage("Congratulations " + c.name + " you won!");
                        c.serverWin();
 
                        // Tell everyone else that they haven't
                        for (ClientHandler d : clients) {
 
                              if (d != c) {
                                    d.serverMessage("Sorry " + d.name + " it looks like "
                                                + c.name + " beat you.");
                                    d.serverLose();
                              }
 
                        }
 
                  }
 
                  // Release the semaphore so that the next player can start their
                  // turn
                  playerTurn.release();
                  // }
 
            }
 
            return;
 
      }
 
      // A simple helper function
      public static void printUsageAndDie(String error) {
            System.err.println(error);
            System.err.println("Usage:");
            System.err.println("\tjava LODServer <port> <players> <map>");
            System.exit(1);
      }
 
      // The main method just handles the command line arguements
      // creates one instance of LODServer and starts it running
      public static void main(String args[]) throws java.io.IOException {
 
            // Check the command line arguements
            if (args.length != 3) {
                  printUsageAndDie("Incorrect number of command line arguements");
            } else {
                  // Parse the command line arguements
                  int port = Integer.parseInt(args[0]);
 
                  // Only ports 1025 to 65535 are suitable
                  if ((port <= 1024) || (port >= 65536)) {
                        printUsageAndDie("Invalid port number");
                  }
 
                  int players = Integer.parseInt(args[1]);
                  if (players < 0) {
                        printUsageAndDie("Invalid number of users");
                  }
 
                  // Create a LODServer object to run the game
                  LODServer s = new LODServer();
 
                  // Set it up
                  s.setup(port, players, args[2]);
 
                  // Go!
                  try {
                        s.play();
                  } catch (InterruptedException e) {
                        // Something has gone wrong - abort
                        System.err.println("Caught InterruptedException(?)");
                        System.exit(1);
                  }
            }
      }
}
[+][-]03/13/08 07:39 AM, ID: 21116620Accepted Solution

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About this solution

Zones: Java Programming Language, Programming Languages
Tags: Java
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Solution Provided By: ADSLMark
Participating Experts: 1
Solution Grade: A
 
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