@Override
public Field move(
Moveable moveable,
SetterOfPosition setterOfPosition,
Field target,
ResourceHolder resourceHolder)
throws FieldsNotConnectedException, MoveNotPossibleException, NotEnoughResourceException {
if (!moveable.getPosition().isConnected(target)) {
throw new FieldsNotConnectedException(moveable.getPosition(), target);
}
CanMoveReport canMoveReport = canMove(moveable, target, resourceHolder);
if (canMoveReport.isPossible()) {
resourceHolder.pay(movePointCollector.collect(moveable, target).asPayment());
setterOfPosition.setPosition(target);
return target;
} else if (!canMoveReport.canPay()) {
throw new NotEnoughResourceException(
movePointCollector.collect(moveable, target).asPayment(),
resourceHolder.amountOf(MovePoint.class));
} else if (canMoveReport.isBlocked() || !canMoveReport.isAbleToEnd()) {
throw new MoveNotPossibleException(canMoveReport);
} else {
throw new MoveNotPossibleException("move is not possible - unknown reason");
}
}
@Override
public CanMoveReport canMove(Moveable moveable, Field target, ResourceHolder resourceHolder) {
if (moveable == null || target == null || resourceHolder == null) {
return new CanMoveReportBasic.Builder().buildNull();
}
return new CanMoveReportBasic.Builder()
.setCost(movePointCollector.collect(moveable, target))
.setMaxPayment(resourceHolder.get(MovePoint.class))
.setMoveIsBlockedBy(checkMoveBlocks(moveable, target))
.setMoveIsUnableToEndBy(checkMoveUnableToEnd(moveable, target))
.setSource(moveable.getPosition())
.setTarget(target)
.build();
}
protected boolean checkResources(Moveable moveable, Field target, ResourceHolder resourceHolder) {
return resourceHolder != null
&& resourceHolder.canPay(movePointCollector.collect(moveable, target).asPayment());
}