Loading course mark order from RaceXML

- Mark order is read from the generated RaceXML and stored
- Added .getNextMark() to get the next mark in the race
- Added .equals() and .hashCode() for Marks

Tags: #story[1124] (Task 1)

src/main/java/seng302/gameServer/GameState.java

@@ -1,13 +1,14 @@
 package seng302.gameServer;
 
+import seng302.client.ClientPacketParser;
+import seng302.models.Player;
+import seng302.models.Yacht;
+import seng302.server.messages.BoatActionType;
+
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import seng302.client.ClientPacketParser;
-import seng302.models.Player;
-import seng302.models.Yacht;
-import seng302.server.messages.BoatActionType;
 
 /**
  * A Static class to hold information about the current state of the game (model)
@@ -43,7 +44,6 @@ public class GameState implements Runnable {
         yachts = new HashMap<>();
 
         new Thread(this).start();
-
     }
 
     public static String getHostIpAddress() {

src/main/java/seng302/models/map/CanvasMap.java

@@ -7,8 +7,6 @@ import seng302.utilities.GeoPoint;
 import javax.net.ssl.HttpsURLConnection;
 import java.net.URL;
 
-import java.lang.Math;
-
 /**
  * CanvasMap retrieves a map image with given geo boundary from Google Map server.
  * By passing a rectangle like geo boundary, it returns a map image with the

src/main/java/seng302/models/mark/Mark.java

@@ -145,4 +145,42 @@ public abstract class Mark {
     public int getCompoundMarkID() {
         return compoundMarkID;
     }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == null) {
+            return false;
+        }
+
+        if (!(other instanceof Mark)){
+            return false;
+        }
+
+        Mark otherMark = (Mark) other;
+
+        if (otherMark.getLatitude() != getLatitude() || otherMark.getLongitude() != getLongitude()) {
+            return false;
+        }
+
+        if (otherMark.getCompoundMarkID() != getCompoundMarkID()){
+            return false;
+        }
+
+        if (otherMark.getId() != getId()){
+            return false;
+        }
+
+        if (!otherMark.getName().equals(name)){
+            return false;
+        }
+
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        return getName().hashCode() + getMarkType().hashCode() +
+                Integer.hashCode(getCompoundMarkID()) + Double.hashCode(getLatitude()) +
+                Double.hashCode(getLongitude());
+    }
 }

src/main/java/seng302/models/mark/MarkOrder.java

@@ -0,0 +1,116 @@
+package seng302.models.mark;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Document;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import seng302.models.stream.XMLParser;
+import seng302.models.xml.Race;
+import seng302.models.xml.XMLGenerator;
+import seng302.server.messages.XMLMessageSubType;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Class to hold the order of the marks in the race.
+ */
+public class MarkOrder {
+    private List<Mark> raceMarkOrder;
+    private Logger logger = LoggerFactory.getLogger(MarkOrder.class);
+
+    public MarkOrder(){
+        loadRaceProperties();
+    }
+
+    /**
+     * @return An ordered list of marks in the race
+     *         OR null if the mark order could not be loaded
+     */
+    public List<Mark> getMarkOrder(){
+        if (raceMarkOrder == null){
+            logger.warn("Race order accessed but not instantiated");
+            return null;
+        }
+
+        return Collections.unmodifiableList(raceMarkOrder);
+    }
+
+    /**
+     * Returns the mark in the race after the previous mark
+     * @param previous The previous mark
+     * @return the next mark
+     *         OR null if there is no next mark
+     */
+    public Mark getNextMark(Mark previous){
+        for (int i = 0; i < raceMarkOrder.size(); i++){
+            Mark mark = raceMarkOrder.get(i);
+
+            if (i + 1 >= raceMarkOrder.size()){
+                return null;
+            }
+
+            if (mark.equals(previous)){
+                return raceMarkOrder.get(i+1);
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Loads the race order from an XML string
+     * @param xml An AC35 RaceXML
+     * @return An ordered list of marks in the race
+     */
+    private List<Mark> loadRaceOrderFromXML(String xml){
+        XMLParser xmlParser = new XMLParser();
+        XMLParser.RaceXMLObject raceXMLObject;
+
+        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+        DocumentBuilder db;
+        Document doc;
+
+        try {
+            db = dbf.newDocumentBuilder();
+            doc = db.parse(new InputSource(new StringReader(xml)));
+        } catch (ParserConfigurationException | IOException | SAXException e) {
+            logger.error("Failed to read generated race XML");
+            return null;
+        }
+
+        xmlParser.constructXML(doc , XMLMessageSubType.RACE.getType());
+        raceXMLObject = xmlParser.getRaceXML();
+
+        if (raceXMLObject != null){
+            logger.debug("Loaded RaceXML for mark order");
+            return raceXMLObject.getNonDupCompoundMarks();
+        }
+
+        return null;
+    }
+
+    /**
+     * Load the raceXML and mark order
+     */
+    private void loadRaceProperties(){
+        XMLGenerator generator = new XMLGenerator();
+
+        generator.setRace(new Race());
+
+        String raceXML = generator.getRaceAsXml();
+
+        if (raceXML == null){
+            logger.error("Failed to generate raceXML (for race properties)");
+            return;
+        }
+
+        raceMarkOrder = loadRaceOrderFromXML(raceXML);
+    }
+}

src/main/java/seng302/server/messages/Message.java

@@ -1,7 +1,5 @@
 package seng302.server.messages;
 
-import java.io.IOException;
-import java.io.OutputStream;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.Arrays;