/** {@inheritDoc} */
@Override
public Mission doMission(LogBuilder lb) {
lb.add(tag);
String reason = invalidReason();
if (isTargetReason(reason)) {
return retargetMission(reason, lb);
} else if (reason != null) {
return lbFail(lb, false, reason);
}
for (; ; ) {
// Go to the target.
final Unit unit = getUnit();
Unit.MoveType mt =
travelToTarget(getTarget(), CostDeciders.avoidSettlementsAndBlockingUnits(), lb);
switch (mt) {
case MOVE: // Arrived
break;
case MOVE_HIGH_SEAS:
case MOVE_NO_MOVES:
case MOVE_NO_REPAIR:
case MOVE_ILLEGAL:
return lbWait(lb);
case MOVE_NO_ACCESS_EMBARK:
case MOVE_NO_TILE:
return this;
default:
return lbMove(lb, mt);
}
// Cash in now if:
// - already in Europe
// - or can never get there
// - it is free to transport the treasure
// - or there is no potential carrier to get the treasure to there
// Otherwise, it is better to send to Europe.
lbAt(lb);
final AIUnit aiUnit = getAIUnit();
final Europe europe = getUnit().getOwner().getEurope();
if (unit.canCashInTreasureTrain()) {
AIUnit aiCarrier = null;
boolean cashin = unit.isInEurope() || europe == null || unit.getTransportFee() == 0;
if (!cashin && aiUnit.getTransport() == null) {
cashin = assignCarrier(lb) == null;
}
if (cashin)
return (AIMessage.askCashInTreasureTrain(aiUnit))
? lbDone(lb, false, "cashed in")
: lbFail(lb, false, "cashin");
}
return retargetMission("transport expected", lb);
}
}
