Added boat location, and race start messages to the mock data interface

- Added proper support for signed and unsigned types. This includes automatic conversion to the correct data type (long to int, short, or byte). - Moved code related to adding values into the byte buffer into the abstract Message class Tags: #story[29]
2026-05-09 14:28:43 +00:00 · 2017-04-25 21:49:51 +12:00
parent 6874f288ee
commit 1f8f1f0f86
12 changed files with 573 additions and 121 deletions
@@ -0,0 +1,109 @@
+package seng302.server.messages;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public class BoatLocationMessage extends Message {
+    private final int MESSAGE_SIZE = 56;
+
+    private long messageVersionNumber;
+    private long time;
+    private long sourceId;
+    private long sequenceNum;
+    private DeviceType deviceType;
+    private long latitude;
+    private long longitude;
+    private long altitude;
+    private long heading;
+    private long pitch;
+    private long roll;
+    private long boatSpeed;
+    private long COG;
+    private long SOG;
+    private long apparentWindSpeed;
+    private long apparentWindAngle;
+    private long trueWindSpeed;
+    private long trueWindDirection;
+    private long trueWindAngle;
+    private long currentDrift;
+    private long currentSet;
+    private long rudderAngle;
+
+    /**
+     * Describes the location, altitude and sensor data from the boat.
+     * @param sourceId ID of the boat
+     * @param sequenceNum Sequence number of the message
+     * @param latitude The boats latitude
+     * @param longitude The boats longitude
+     * @param heading The boats heading
+     * @param boatSpeed The boats speed
+     */
+    public BoatLocationMessage(int sourceId, int sequenceNum, long latitude, long longitude, long heading, long boatSpeed){
+        messageVersionNumber = 1;
+        time = System.currentTimeMillis() / 1000L;
+        this.sourceId = sourceId;
+        this.sequenceNum = sequenceNum;
+        this.deviceType = DeviceType.RACING_YACHT;
+        this.latitude = -latitude;
+        this.longitude = longitude;
+        this.altitude = 0;
+        this.heading = heading;
+        this.pitch = 0;
+        this.roll = 0;
+        this.boatSpeed = boatSpeed;
+        this.COG = 0;
+        this.SOG = 0;
+        this.apparentWindSpeed = 0;
+        this.apparentWindAngle = 0;
+        this.trueWindSpeed = 0;
+        this.trueWindDirection = 0;
+        this.trueWindAngle = 0;
+        this.currentDrift = 0;
+        this.currentSet = 0;
+        this.rudderAngle = 0;
+
+        setHeader(new Header(MessageType.BOAT_LOCATION, 1, (short) getSize()));
+    }
+
+    @Override
+    public int getSize() {
+        return 56;
+    }
+
+    @Override
+    public void send(DataOutputStream outputStream) {
+        allocateBuffer();
+        writeHeaderToBuffer();
+
+        putByte((byte) messageVersionNumber);
+        putInt((int) time, 6);
+        putInt((int) sourceId, 4);
+        putUnsignedInt((int) sequenceNum, 4);
+        putByte((byte) deviceType.getCode());
+        putInt((int) latitude, 4);
+        putInt((int) longitude, 4);
+        putInt((int) altitude, 4);
+        putUnsignedInt((int) heading, 2);
+        putInt((int) pitch, 2);
+        putInt((int) roll, 2);
+        putUnsignedInt((int) boatSpeed, 2);
+        putUnsignedInt((int) COG, 2);
+        putUnsignedInt((int) SOG, 2);
+        putUnsignedInt((int) apparentWindSpeed, 2);
+        putInt((int) apparentWindAngle, 2);
+        putUnsignedInt((int) trueWindSpeed, 2);
+        putUnsignedInt((int) trueWindDirection, 2);
+        putInt((int) trueWindAngle, 2);
+        putUnsignedInt((int) currentDrift, 2);
+        putUnsignedInt((int) currentSet, 2);
+        putInt((int) rudderAngle, 2);
+
+
+        writeCRC();
+        try {
+            outputStream.write(getBuffer().array());
+        } catch (IOException e) {
+            System.out.print("");
+        }
+    }
+}