@Override
public boolean canBidAfter(Contract current, BridgePosition bidder) {
BridgePosition decl = current.getBridgePosition();
// kontrakt musi być różny od 4 pasów, bez kontry i rekontry oraz
// zalicytowany przez przeciwników
return decl != null
&& current.getStatus() == ContractStatus.NORMAL
&& ((decl == BridgePosition.NORTH || decl == BridgePosition.SOUTH)
&& (bidder == BridgePosition.WEST || bidder == BridgePosition.EAST)
|| (decl == BridgePosition.EAST || decl == BridgePosition.WEST)
&& (bidder == BridgePosition.NORTH || bidder == BridgePosition.SOUTH));
}
@Override
public Contract getContractAfter(Contract current, Bidding bidding, BridgePosition bidder) {
Contract newContract = (Contract) current.clone();
newContract.setStatus(ContractStatus.DOUBLED);
return newContract;
}