/**
* Find a suitable cash in location for this unit.
*
* @param aiUnit The <code>AIUnit</code> to execute this mission.
* @param range The maximum number of moves to search.
* @param deferOK Enables deferring to a fallback colony.
* @return A <code>PathNode</code> to the target, or null if not found which includes the case
* when Europe should be preferred (because the unit can not get there by itself).
*/
private static PathNode findTargetPath(AIUnit aiUnit, int range, boolean deferOK) {
if (invalidAIUnitReason(aiUnit) != null) return null;
final Unit unit = aiUnit.getUnit();
final Location start = unit.getPathStartLocation();
final Player player = unit.getOwner();
final Europe europe = player.getEurope();
final Unit carrier = unit.getCarrier();
final CostDecider standardCd = CostDeciders.avoidSettlementsAndBlockingUnits();
PathNode path;
if (player.getNumberOfSettlements() <= 0 || start == null) {
// No settlements or not on the map, so go straight to
// Europe. If Europe does not exist then this mission is
// doomed.
return (europe == null)
? null
: unit.findPath(unit.getLocation(), europe, carrier, standardCd);
}
// Can the unit get to a cash in site?
return unit.search(start, getGoalDecider(aiUnit, deferOK), standardCd, range, carrier);
}
