@Override
public ByteBuffer encode() {
ByteBuffer data = ByteBuffer.allocate(calculateSize());
addShort(data, 6); // Operand count
addInt(data, CRC); // CRC
addAscii(data, planetName); // ASCII planet name
addInt(data, travelPoints.size()); // List size
for (TravelPoint tp : travelPoints) // Point names
addAscii(data, tp.getName());
addInt(data, travelPoints.size()); // List size
for (TravelPoint tp : travelPoints) { // Point coordinates
addFloat(data, (float) tp.getLocation().getX());
addFloat(data, (float) tp.getLocation().getY());
addFloat(data, (float) tp.getLocation().getZ());
}
addInt(data, additionalCosts.size()); // List size
for (int additionalCost : additionalCosts) { // additional costs
addInt(data, additionalCost <= 0 ? additionalCost + 50 : additionalCost / 2);
}
addInt(data, travelPoints.size()); // List size
for (TravelPoint tp : travelPoints) { // reachable
addBoolean(data, tp.isReachable());
}
return data;
}
private int calculateSize() {
int size =
Integer.BYTES * 5
+ // CRC, 4x travelpoint list size
Short.BYTES * 2
+ // operand count + ascii string for planet name
travelPoints.size() * (3 * Float.BYTES)
+ // all the floats
travelPoints.size() * Integer.BYTES
+ // prices
travelPoints.size() * Byte.BYTES; // the "reachable" booleans
for (TravelPoint tp : travelPoints)
size +=
tp.getName().length()
+ Short.BYTES; // length of each actual name + a short to indicate name length
size += planetName.length();
return size;
}
