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66 lines
2.0 KiB
66 lines
2.0 KiB
package network.MessageEncoders;
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import network.Exceptions.InvalidMessageException;
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import network.Messages.BoatStatus;
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import java.nio.ByteBuffer;
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import static network.Utils.ByteConverter.intToBytes;
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import static network.Utils.ByteConverter.longToBytes;
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/**
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* This encoder can encode a {@link BoatStatus} message.
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*/
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public class BoatStatusEncoder {
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/**
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* Constructor.
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*/
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public BoatStatusEncoder() {
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}
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/**
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* Encodes a given BoatStatus message.
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* @param message The message to encode.
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* @return The encoded message.
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* @throws InvalidMessageException Thrown if the message is invalid in some way, or cannot be encoded.
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*/
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public byte[] encode(BoatStatus message) throws InvalidMessageException {
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try {
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//Downcast.
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BoatStatus boatStatus = (BoatStatus) message;
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//BoatStatus is 20 bytes.
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ByteBuffer boatStatusBuffer = ByteBuffer.allocate(20);
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byte[] sourceID = intToBytes(boatStatus.getSourceID());
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byte[] boatStatusBytes = intToBytes(boatStatus.getBoatStatus().getValue(), 1);
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byte[] legNum = intToBytes(boatStatus.getLegNumber(), 1);
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byte[] numPenalties = intToBytes(boatStatus.getNumPenaltiesAwarded(), 1);
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byte[] numPenaltiesServed = intToBytes(boatStatus.getNumPenaltiesServed(), 1);
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byte[] estNextMarkTime = longToBytes(boatStatus.getEstTimeAtNextMark(), 6);
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byte[] estFinishTime = longToBytes(boatStatus.getEstTimeAtFinish(), 6);
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boatStatusBuffer.put(sourceID);
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boatStatusBuffer.put(boatStatusBytes);
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boatStatusBuffer.put(legNum);
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boatStatusBuffer.put(numPenalties);
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boatStatusBuffer.put(numPenaltiesServed);
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boatStatusBuffer.put(estNextMarkTime);
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boatStatusBuffer.put(estFinishTime);
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return boatStatusBuffer.array();
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} catch (Exception e) {
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throw new InvalidMessageException("Could not encode BoatStatus message.", e);
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}
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}
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}
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