Hello All,
I am trying to forcibly move a car from some location to another one,
specified by an edge_id
I am trying to do this using SUMO TraCI Byte[] messages, but am having
difficulty encoding the message, I am not trying to decode any messages as
I don't think I should be getting any response, although I may be mistaken.
If you can see where I've gone wrong, that would be extremely useful.
Kind regards,
Tim Lehner
My approach is below:
===============================
public static byte[] encodeTeleportRequest(final String vehicleId, String
newEdgeId) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
try{
dos.writeInt(41 + newEdgeId.length()); // Message Length inc.
Header
dos.writeByte(37+ newEdgeId.length()); // Length of Command,
with Identifier (note just 4 less then total)
dos.writeByte((byte)0xc4); // Command 0xc4: Change
Vehicle State
dos.writeByte((byte)0x5c); // move to (0x5c) compound
(lane ID, position along lane)
// Moves the vehicle to a
new position
dos.writeInt(vehicleId.length()); // Prep next few lines
dos.write(vehicleId.getBytes("UTF-8")); // Identify Vehicle
dos.writeByte((byte)0x0F); // compound object 0x0F
dos.writeInt(2); // compound object has 2
values
dos.writeByte((byte)0x0C); // String object, 0x0C
dos.writeInt((newEdgeId.size() + 2));
dos.write((newEdgeId + "_0").getBytes("UTF-8")); // Lane id =
edge_id + "_#" where # is lane number
dos.writeByte((byte)0x0B); // Double object, 0x0B
dos.writeInt(8);
dos.writeDouble(0.0); // start of the lane.
} catch (IOException e) {
throw new RuntimeException(e);
}
return baos.toByteArray();
}
===============================
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