//
// PlayBestCard()
//
// called on the third and fourth hand plays to try to win the trick
//
CCard* CPlayEngine::PlayBestCard(int nPosition)
{
CPlayerStatusDialog& status = *m_pStatusDlg;
// status << "2PLAY3! Playing best card.\n";
// get play info
CCard* pCurrentCard = pDOC->GetCurrentTrickCardLed();
int nSuitLed = pCurrentCard->GetSuit();
int nTopPos;
CCard* pCurrTopCard = pDOC->GetCurrentTrickHighCard(&nTopPos);
CString strTopCardPos = PositionToString(nTopPos);
BOOL bPartnerHigh = FALSE;
int nCurrentRound = pDOC->GetPlayRound();
int nCurrentSeat = pDOC->GetNumCardsPlayedInRound() + 1;
CCard* pPartnersCard = pDOC->GetCurrentTrickCard(m_pPartner->GetPosition());
if (pPartnersCard == pCurrTopCard)
bPartnerHigh = TRUE;
//
int nTrumpSuit = pDOC->GetTrumpSuit();
int numCardsInSuitLed = m_pHand->GetNumCardsInSuit(nSuitLed);
// card to play
CCard* pCard = NULL;
//
// first see if somebody trumped in this hand
//
if ((pDOC->WasTrumpPlayed()) && (nTrumpSuit != nSuitLed))
{
// a trump has been played
// see whether it was played by partner or by an opponent
if (bPartnerHigh)
{
// partner trumped -- leave it alone for now
pCard = GetDiscard();
status << "PLAYB10! We let partner's " & pCurrTopCard->GetName() & " trump ride and discard the " &
pCard->GetName() & ".\n";
}
else
{
// it was an opponent that did the trumping
// see if we can overtrump
CSuitHoldings& trumpSuit = m_pHand->GetSuit(nTrumpSuit);
CCard* pTopTrump = NULL;
if (trumpSuit.GetNumCards() > 0)
pTopTrump = trumpSuit.GetTopCard();
if ((numCardsInSuitLed == 0) && (pTopTrump) && (*pTopTrump > *pCurrTopCard))
{
// get the lowest trump that wil top the current top trump
int numTopCards = trumpSuit.GetNumCardsAbove(pCurrTopCard);
pCard = trumpSuit[numTopCards-1];
status << "PLAYB20! We can overtrump " & strTopCardPos & "'s " & pCurrTopCard->GetName() &
" with the " & pCard->GetFaceName() & ".\n";
}
else
{
// no chance to win, so discard
pCard = GetDiscard();
if ((numCardsInSuitLed == 0) && (trumpSuit.GetNumCards() > 0))
status << "PLAYB22! We can't overtrump " & strTopCardPos & "'s " &
pCurrTopCard->GetFaceName() & ", so discard the " & pCard->GetName() & ".\n";
else
status << "PLAYB23! We can't beat the opponent's " & pCurrTopCard->GetFaceName() &
" of trumps, so discard the " & pCard->GetName() & ".\n";
}
}
}
else
{
// else nobody has played a trump this round, _or_ a trump was led
// see if we can play trumps
if (numCardsInSuitLed > 0)
{
// nope, gotta follow the suit that was led, trumps or otherwise
// if we can beat the current top card, do so with the cheapest card
CSuitHoldings& suit = m_pHand->GetSuit(nSuitLed);
if (*(suit.GetTopCard()) > *pCurrTopCard)
{
// but see if the top card is partner's
if (bPartnerHigh)
{
// see if we should unblock here
if (ISSUIT(nTrumpSuit) && (nCurrentRound == 0) &&
(suit.GetNumHonors() == 1))
{
// first round in an NT contract, with one honor
// in the suit -- unblock
pCard = suit.GetTopCard();
if (suit.GetNumCards() > 1)
status << "PLAYB30! Drop the " & pCard->GetFaceName() &
" here to unblock the suit for partner.\n";
}
else
{
// else this is not an unblocking situation
if (nCurrentSeat == 4)
{
// playing in 4th seat, high card is partner, so discard
pCard = GetDiscard();
status << "PLAYB34! Partner's " & pCurrTopCard->GetFaceName() &
" is high, so discard the " & pCard->GetName() & ".\n";
}
else
{
// playing in third position -- decide whether to
// let partner's card ride
// do so if if partner's card beats all outstanding cards
CCard* pTopOutstandingCard = GetHighestOutstandingCard(nSuitLed);
if ((pTopOutstandingCard == NULL) || (*pCurrTopCard > *pTopOutstandingCard))
{
// let partner's card ride
pCard = GetDiscard();
status << "PLAYB36! Partner's " & pCurrTopCard->GetFaceName() &
" is higher than any outstanding card, so discard the " &
pCard->GetName() & ".\n";
}
else
{
// partner's card is not necessarily highest, so top it
pCard = suit.GetTopSequence().GetBottomCard();
status << "PLAYB37! Partner's " & pCurrTopCard->GetFaceName() &
" might not win the round, so top it with the " & pCard->GetFaceName() & ".\n";
}
}
}
}
else
{
// else high card is opponent's, so beat it w/ highest card affordable
// although, if playing in 3rd pos ahead of dummy, just play
// high enuff to beat dummy
if ((nCurrentSeat == 3) && (m_bLHDefender))
{
CSuitHoldings& dummySuit = GetDummySuit(nSuitLed);
int nDummyTopCard = 0;
if (dummySuit.GetNumCards() > 0)
nDummyTopCard = dummySuit[0]->GetFaceValue();
int nTopVal = Max(nDummyTopCard, pCurrTopCard->GetFaceValue());
pCard = suit.GetLowestCardAbove(nTopVal);
// see if we can beat the top card or dummy's top card
if (pCard)
{
if (nTopVal == nDummyTopCard)
{
// dummy has the top card and we can beat it
status << "PLAYB38A! Playing third ahead of dummy, need to beat dummy's " &
CardValToString(nDummyTopCard) & ".\n";
}
else
{
// the top card is declarer's
status << "PLAYB38B! Play high to win with the " & pCard->GetFaceName() & ".\n";
}
}
else
{
// else we can't beat dummy's top card, but play
// high anyway to force out his winner
pCard = suit.GetLowestCardAbove(pCurrTopCard);
status << "PLAYB38C! We top declarer's " & pCurrTopCard->GetFaceName() &
" to force a winner from dummy.\n";
}
}
else if (nCurrentSeat == 3)
{
// else we're playing 3rd, so play the lowest card from the top sequence
pCard = suit.GetTopSequence().GetBottomCard();
status << "PLAYB40! Play high to win with the " & pCard->GetFaceName() & ".\n";
}
else
{
// else we're playing last (4th)
// play the cheapest card that will beat the top card
pCard = suit.GetLowestCardAbove(pCurrTopCard);
status << "PLAYB41! Play the " & pCard->GetFaceName() & " to win the trick.\n";
}
}
}
else
{
// we don't have a card to top the current high card
if (bPartnerHigh)
{
// but partner's card is high, so we're OK
pCard = GetDiscard();
status << "PLAYB47! Partner's " & pCurrTopCard->GetFaceName() &
" can win the trick, so discard the " & pCard->GetName() & ".\n";
}
else
{
// else we're screwed
pCard = GetDiscard();
status << "PLAYB48! We can't beat " & strTopCardPos & "'s " & pCurrTopCard->GetFaceName() &
", so discard the " & pCard->GetName() & ".\n";
}
}
}
else if (ISSUIT(nTrumpSuit) && (nSuitLed != nTrumpSuit) &&
(m_pHand->GetNumCardsInSuit(nTrumpSuit) > 0))
{
// here, we can play a trump, so do so if appropriate
// see who has the top card in this round
if (bPartnerHigh)
{
// let partner's card ride
pCard = GetDiscard();
status << "PLAYB52! Although we could trump this hand, partner's " & pCurrTopCard->GetName() &
" is high, so discard the " & pCard->GetName() & ".\n";
}
else
{
// opponents have the high card (non-trump) -- so slam 'em
pCard = m_pHand->GetSuit(nTrumpSuit).GetBottomCard();
status << "PLAYB55! With no cards in " & SuitToString(nSuitLed) &
", trump with the " & pCard->GetName() & ".\n";
}
}
else
{
// here we have zero cards in the suit and in trumps, so we're hosed
pCard = GetDiscard();
status << "PLAYB52! With no cards in the suit led and no trumps, we discard the " & pCard->GetName() & ".\n";
}
}
//
ASSERT(pCard->IsValid());
ASSERT(m_pHand->HasCard(pCard));
//
return pCard;
}
//
// AdjustCardCountFromPlay()
//
// adjust card count and analysis after a card is played
//
void CPlayEngine::AdjustCardCountFromPlay(int nPos, CCard* pCard)
{
// default code
// if (nPos != m_pPlayer->GetPosition())
// {
// note the card that was played
CGuessedHandHoldings* pPlayerHoldings = m_ppGuessedHands[nPos];
CGuessedCard* pGuessedCard = new CGuessedCard(pCard, // card
FALSE, // no longer outstanding
nPos, // location
1.0); // known with certainty
*pPlayerHoldings << pGuessedCard;
// see if the player showed out
CPlayerStatusDialog& status = *m_pStatusDlg;
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
if (pCard)
{
int nSuitLed = pCardLed->GetSuit();
ASSERT(nSuitLed != NONE);
CGuessedSuitHoldings& suit = pPlayerHoldings->GetSuit(nSuitLed);
if ((pCard->GetSuit() != nSuitLed) && (!suit.IsSuitShownOut()))
{
status << "4RCP10! " & PositionToString(nPos) &
" shows out of " & STS(nSuitLed) & ".\n";
suit.MarkSuitShownOut();
if (pPlayerHoldings->GetNumSuitsFullyIdentified() > 1)
{
// multiple suits identified
status << "4RCP1A! " & PositionToString(nPos) &
" is now known to have started with ";
int numTotalIdentifiedSuits = pPlayerHoldings->GetNumSuitsFullyIdentified();
int numIdentifiedSuits = 0;
int numTotalIdentifiedCards = 0;
int numTotalOriginalCards = 0;
int nIdentifiedSuits[4];
for(int i=0;i<4;i++)
{
if (pPlayerHoldings->GetSuit(i).AreAllCardsIdentified())
{
CGuessedSuitHoldings& currSuit = pPlayerHoldings->GetSuit(i);
status < ((numIdentifiedSuits > 0)? " and " : " ") &
currSuit.GetNumOriginalCards() & " " &
((suit.GetNumOriginalCards() > 1)? STS(i) : STSS(i));
nIdentifiedSuits[numIdentifiedSuits] = i;
numIdentifiedSuits++;
numTotalIdentifiedCards += currSuit.GetNumDefiniteCards();
numTotalOriginalCards += currSuit.GetNumOriginalCards();
}
}
status < ".\n";
// if the number of cards is known in 3 suits, the orignal
// and current length of the 4th suit is also known
if (numTotalIdentifiedSuits == 3)
{
// first identify the fourth suit
int nFourthSuit = NONE;
for(int i=0;i<4;i++)
{
// test each suit to see if it's in the list of know suits
for(int j=0;j<3;j++)
{
if (nIdentifiedSuits[j] == i)
break;
}
if (j == 3)
nFourthSuit = i;
}
//
VERIFY(nFourthSuit != NONE);
CGuessedSuitHoldings& fourthSuit = pPlayerHoldings->GetSuit(nFourthSuit);
int numOriginalCards = 13 - numTotalOriginalCards;
VERIFY(numOriginalCards >= 0);
fourthSuit.SetNumOriginalCards(numOriginalCards);
int numRemainingCards = numOriginalCards - fourthSuit.GetNumCardsPlayed();
VERIFY(numRemainingCards >= 0);
// mark the # of remaining cards
// revisit this later
// fourthSuit.SetNumLikelyCards(numRemainingCards);
fourthSuit.SetNumRemainingCards(numRemainingCards);
//
status << "4RCP1B! Therefore, " & PositionToString(nPos) &
" started with " & numOriginalCards & " " & STS(nFourthSuit) &
" and has " & numRemainingCards & " left.\n";
}
}
else
{
status < "RCP5A! " & PositionToString(nPos) &
" is now known to have started with " &
suit.GetNumOriginalCards() & " " &
((suit.GetNumOriginalCards() == 1)? STSS(nSuitLed) : STS(nSuitLed)) & ".\n";
}
}
// also, if this is the dummy, and the dummy plays his last card
// in the suit, he has effectively shown out
CPlayer* pDummy = pDOC->GetDummyPlayer();
if ((nPos == pDummy->GetPosition()) && (pDummy->AreCardsExposed()))
{
if ((pCard->GetSuit() == nSuitLed) &&
(pDummy->GetHand().GetNumCardsInSuit(nSuitLed) == 0) &&
(!pPlayerHoldings->IsSuitShownOut(nSuitLed)))
{
status << "3RCP20! Dummy is now out of " & STS(nSuitLed) & ".\n";
pPlayerHoldings->MarkSuitShownOut(nSuitLed);
}
}
}
// }
// special code -- if dummy has just been laid down, mark a suit as shown
// out if dummy is void in the suit
CPlayer* pDummy = pDOC->GetDummyPlayer();
int nRound = pDOC->GetPlayRound();
if ((nRound == 0) && (nPos == pDummy->GetPosition()) && (pDummy->AreCardsExposed()))
{
CHandHoldings& dummy = pDummy->GetHand();
for(int i=0;i<4;i++)
{
if (dummy.GetNumCardsInSuit(i) == 0)
{
status << "3RCP25! Dummy is shown to be void in " & STS(i) & ".\n";
pPlayerHoldings->MarkSuitShownOut(i);
}
}
}
}
//
// PlaySecond()
//
// default implementation, generally should be overridden in derived classes
//
CCard* CPlayEngine::PlaySecond()
{
CPlayerStatusDialog& status = *m_pStatusDlg;
status << "5PLAY2! Playing second, using default player logic.\n";
// get play info
int nDummyPos = pDOC->GetDummyPosition();
CCard* pCardLed = pDOC->GetCurrentTrickCardLed();
int nSuitLed = pCardLed->GetSuit();
int nFaceValue = pCardLed->GetFaceValue();
CCard* pCurrTopCard = pDOC->GetCurrentTrickHighCard();
int nTrumpSuit = pDOC->GetTrumpSuit();
CSuitHoldings& suit = m_pHand->GetSuit(nSuitLed);
// card to play
CCard* pCard = NULL;
// second hand low
int numCardsInSuit = suit.GetNumCards();
if (numCardsInSuit > 0)
{
// default behavior -- just play the low card
pCard = m_pHand->GetSuit(nSuitLed).GetBottomCard();
if (numCardsInSuit > 1)
{
if (*pCard < *pCurrTopCard)
status << "PLY2C1! Play second hand low with the " & pCard->GetFaceName() & ".\n";
else
status << "PLY2C2! As second hand, we play the lowest card we have in the suit, the " & pCard->GetFaceName() & ".\n";
}
else
{
status << "PLY2C4! Play our only " & STSS(nSuitLed) & ", the " & pCard->GetFaceName() & ".\n";
}
}
else
{
// no cards in the suit led
// trump here if possible
if (m_pHand->GetNumTrumps() > 0)
{
//
CSuitHoldings& trumpSuit = m_pHand->GetSuit(nTrumpSuit);
// see if partner would win the suit otherwise
CGuessedSuitHoldings& partnerSuit = m_pPlayer->GetGuessedHand(m_nPartnerPosition)->GetSuit(nSuitLed);
CCardList outstandingCards;
GetOutstandingCards(nSuitLed, outstandingCards);
if (partnerSuit.AreAllCardsIdentified() && partnerSuit.HasCard(outstandingCards[0]->GetFaceValue()))
{
// partner may win the trick, so discard
status << "PLY2K1! We could trump here, but we know partner holds the " & outstandingCards[0]->GetName() &
" and can win the trick, so discard the " & pCard->GetName() & ".\n";
}
else
{
// trump here if possible
// but first see if we're playing ahead of dummy (dummy is to our left),
// and dummy is also void in the suit
CGuessedHandHoldings* pDummyHand = m_pPlayer->GetGuessedHand(nDummyPos);
if ((m_pLHOpponent == pDOC->GetDummyPlayer()) &&
(pDummyHand->GetSuit(nSuitLed).GetNumRemainingCards() == 0) &&
(pDummyHand->GetSuit(nTrumpSuit).GetNumRemainingCards() > 0))
{
// dummy is also void, so trump if we have a trump higher than dummy's
CGuessedCard* pDummyTopTrump = pDummyHand->GetSuit(nTrumpSuit).GetAt(0);
if (trumpSuit.GetNumCardsAbove(pDummyTopTrump->GetFaceValue()) > 0)
{
// go ahead and ruff
pCard = trumpSuit.GetLowestCardAbove(pDummyTopTrump->GetFaceValue());
status << "PLY2M1! Trump here, making sure to thwart dummy's " & pDummyTopTrump->GetFaceName() &
" of trumps by playing the " & pCard->GetFaceName() & ".\n";
}
else
{
// dummy would overtrump
pCard = GetDiscard();
status << "PLY2M2! We'd like to trump here, but Dummy may overruff, so discard the " & pCard->GetName() & ".\n";
}
}
else
{
// safe to trump -- play the lowest trump
pCard = trumpSuit.GetBottomCard();
status << "PLY2P1! Trump with the " & pCard->GetFaceName() & ".\n";
}
}
}
else
{
// discard
pCard = GetDiscard();
status << "PLY2Y! We have no " & SuitToString(nSuitLed) & ", so discard the " & pCard->GetName() & ".\n";
}
}
//
ASSERT(pCard->IsValid());
return pCard;
}
//
// Perform()
//
// called to do the deed
//
PlayResult CCash::Perform(CPlayEngine& playEngine, CCombinedHoldings& combinedHand,
CCardLocation& cardLocation, CGuessedHandHoldings** ppGuessedHands,
CPlayerStatusDialog& status, CCard*& pPlayCard)
{
// check which hand this is
int nOrdinal = pDOC->GetNumCardsPlayedInRound();
CPlayer* pPlayer = playEngine.GetPlayer();
BOOL bPlayingInHand = (pDOC->GetCurrentPlayer() == pPlayer);
CHandHoldings& playerHand = *(combinedHand.GetPlayerHand());
CHandHoldings& dummyHand = *(combinedHand.GetPartnerHand());
CSuitHoldings& declarerSuit = playerHand.GetSuit(m_nSuit);
CSuitHoldings& dummySuit = dummyHand.GetSuit(m_nSuit);
CCombinedSuitHoldings& combinedSuit = combinedHand.GetSuit(m_nSuit);
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
int nSuitLed = pCardLed? pCardLed->GetSuit() : NONE;
CDeclarerPlayEngine& declarerEngine = (CDeclarerPlayEngine&) playEngine;
// see if a trump was played in this round
BOOL bTrumped = FALSE;
int nTrumpSuit = pDOC->GetTrumpSuit();
if ((nSuitLed != nTrumpSuit) && (pDOC->WasTrumpPlayed()))
bTrumped = TRUE;
pPlayCard = NULL;
// see what the top card in the round is
CCard* pTopCard = pDOC->GetCurrentTrickHighCard();
CCard* pDeclarerCard = pDOC->GetCurrentTrickCard(playEngine.GetPlayerPosition());
CCard* pDummysCard = pDOC->GetCurrentTrickCard(playEngine.GetPartnerPosition());
CCard* pPartnersCard = bPlayingInHand? pDummysCard : pDeclarerCard;
BOOL bPartnerHigh = (pTopCard == pPartnersCard);
//
if (!CPlay::IsPlayUsable(combinedHand, playEngine))
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// see if one or more opponents are void in the suit AND have not shown out
// of trumps
if (ISSUIT(nTrumpSuit))
{
int numOutstandingTrumps = playEngine.GetNumOutstandingCards(nTrumpSuit);
BOOL bSkipPlay = FALSE;
// if leading, check LHO
CGuessedHandHoldings* pLHOHand = ppGuessedHands[playEngine.GetLHOpponent()->GetPosition()];
if ((nOrdinal == 0) && (numOutstandingTrumps > 0) && pLHOHand->IsSuitShownOut(m_nSuit) && !pLHOHand->IsSuitShownOut(nTrumpSuit))
{
bSkipPlay = TRUE;
status << "5PLCSHZ1! The play <" & m_strName & "> is not yet safe as LHO has shown out of the suit and may ruff.\n";
}
// also check RHO
CGuessedHandHoldings* pRHOHand = ppGuessedHands[playEngine.GetRHOpponent()->GetPosition()];
if ((numOutstandingTrumps > 0) && pRHOHand->IsSuitShownOut(m_nSuit) && !pRHOHand->IsSuitShownOut(nTrumpSuit))
{
bSkipPlay = TRUE;
status << "5PLCSHZ2! The play <" & m_strName & "> is not yet safe as RHO has shown out of the suit and may ruff.\n";
}
//
if (bSkipPlay)
{
// opponents might ruff
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
// else proceed
// check our position in the play
switch(nOrdinal)
{
case 0:
// we're leading, player #0
if (bPlayingInHand)
{
// playing from our own hand (declarer) and cashing in hand
if (m_nTargetHand == IN_HAND)
{
// cashing from hand -- check to be sure the other hand has losers
// i.e., don't discard a winner on a winner UNLESS both hands
// have nothing but winners, OR the other hand has only one card,
// a winner that's lower than the top card in this hand,
// AND this hand has only winners
// this is because we don't want to end up stranded in the wrong hand
// examples:
// ---------
// from Kx/A -- don't lead the King!
// Kxx/AQ -- again, don't lead the King
// KJ/Q -- we _can_ lead the K (in fact, we should)
// KQJ/T9 -- doesn't matter
// Qx/AKJ -- doesn't matter
if ((dummySuit.GetNumCards() == 1) && (combinedSuit.GetNumDummyLosers() == 0) &&
(combinedSuit.GetNumDeclarerLosers() == 0) && (*dummySuit[0] < *m_pConsumedCard))
{
// this is a special case, so it's OK
}
else if ((dummySuit.GetNumCards() > 0) && (combinedSuit.GetNumDummyLosers() == 0) &&
(combinedSuit.GetNumDeclarerLosers() > 0) &&
(combinedSuit.GetNumDummyWinners() < declarerSuit.GetNumCards()) &&
(*dummySuit[0] > *declarerSuit[0]) &&
(declarerEngine.GetNumDeclarerEntries() == 1) )
{
// here, nothing but higher winners in dummy, which is shorter than hand
status << "5PLCSH02! We could cash the " & m_pConsumedCard->GetName() &
" from hand, but dummy has no losers to discard in the suit and could get stranded there.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// proceed
pPlayCard = m_pConsumedCard;
status << "PLCSH10! Cash the " & pPlayCard->GetName() &
" from hand.\n";
}
else
{
// playing from hand. but cashing from dummy,
// lead a low card from hand
if (declarerSuit.GetNumCards() > 0)
{
// we have cards in the suit
// if (combinedSuit.GetNumDeclarerLosers() > 0)
if (declarerSuit.GetNumCardsBelow(m_pConsumedCard) > 0)
{
// lead a low card, but test first
pPlayCard = declarerSuit.GetBottomCard();
if ( combinedSuit .AreEquivalentCards(pPlayCard, m_pConsumedCard) &&
// (declarerSuit.GetNumCards() > 1) && (ombinedSuit.GetNumDummyLosers() > 0) )
(combinedSuit.GetNumDummyLosers() > 0) )
{
// oops, the "low" card is equivalent to the cash card!
status << "4PLCSH15! Oops, the lowest card we can lead from hand for the cash is the " &
pPlayCard->GetFaceName() & ", which is equivalent to the " &
m_pConsumedCard->GetFaceName() & ", so skip the cash play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
else
{
status << "PLCSH20! Lead a low " & STSS(m_nSuit) &
" (the " & pPlayCard->GetFaceName() &
") from hand in order to cash the " &
m_pConsumedCard->GetFaceName() & " in dummy.\n";
}
}
else
{
// oops, we have no low cards in hand to lead!
status << "4PLCSH21! Oops, we wanted to cash a " & STSS(m_nSuit) &
" in dummy, but we have no low " & STS(m_nSuit) &
" in hand to lead, so we have to abandon that play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
else
{
// oops, no card in the suit to lead!
status << "4PLCSH22! Oops, we wanted to cash a " & STSS(m_nSuit) &
" in dummy, but we have no " & STS(m_nSuit) &
" in hand to lead, so we have to abandon that play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
}
}
else
{
// playing in dummy
if (m_nTargetHand == IN_DUMMY)
{
// we're leading from dummy and also cashing in dummy
// also check to be sure the player's hand has losers
if ((declarerSuit.GetNumCards() == 1) && (combinedSuit.GetNumDeclarerLosers() == 0) &&
(combinedSuit.GetNumDummyLosers() == 0) && (*declarerSuit[0] < *m_pConsumedCard))
{
// this is a special case (e.g., Kx/J), so it's OK
}
else if ((declarerSuit.GetNumCards() > 0) && (combinedSuit.GetNumDeclarerLosers() == 0) &&
(combinedSuit.GetNumDummyLosers() > 0) &&
(combinedSuit.GetNumDeclarerWinners() < dummySuit.GetNumCards()) &&
(*declarerSuit[0] > *dummySuit[0]) &&
(declarerEngine.GetNumDummyEntries() == 1) )
{
// here, nothing but higher winners in hand, which is shorter than dummy
status << "5PLCSH12! We could cash the " & m_pConsumedCard->GetName() &
" from dummy, but we have no losers in hand to discard in the suit and could get stranded there.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// proceed
pPlayCard = m_pConsumedCard;
status << "PLCSH30! Cash the " & pPlayCard->GetName() & " from dummy.\n";
}
else
{
// leading from dummy, but cashing from hand
// lead a low card of the suit from dummy
if (dummySuit.GetNumCards() > 0)
{
// if (combinedSuit.GetNumDummyLosers() > 0)
if (dummySuit.GetNumCardsBelow(m_pConsumedCard) > 0)
{
pPlayCard = dummySuit.GetBottomCard();
if ( combinedSuit .AreEquivalentCards(pPlayCard, m_pConsumedCard) &&
// (dummySuit.GetNumCards() > 1) && (combinedSuit.GetNumDeclarerLosers() > 0) )
(combinedSuit.GetNumDeclarerLosers() > 0) )
{
// oops, the "low" card is equivalent to the cash card!
status << "4PLCSH35! Oops, the lowest card we can lead from dummy for the cash is the " &
pPlayCard->GetFaceName() & ", which is equivalent to the " &
m_pConsumedCard->GetFaceName() & ", so skip the cash play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
else
{
status << "PLCSH40! Lead a low " & STSS(m_nSuit) &
" (the " & pPlayCard->GetFaceName() &
") from dummy in order to cash the " &
m_pConsumedCard->GetFaceName() & " in hand.\n";
}
}
else
{
// oops, we have no low cards in dummy to lead!
status << "4PLCSH41! Oops, we wanted to cash a " & STSS(m_nSuit) &
" in hand, but we have no low " & STS(m_nSuit) &
" in dummy to lead, so we have to abandon that play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
else
{
// oops, no card in the suit to lead!
status << "4PLCSH42! Oops, we wanted to cash a " & STSS(m_nSuit) &
" in hand, but we have no " & STS(m_nSuit) &
" in dummy to lead, so we have to abandon that play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
}
}
// all went OK
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 1:
// playing second
if (nSuitLed == m_nSuit)
{
// see if the card led is higher than ours
if (*pCardLed > *m_pConsumedCard)
{
status << "3PLCSH53! the card led (" & pCardLed->GetName() & ") " &
" beats the " & m_pConsumedCard->GetName() &
" we were going to play, so skip the cash for now.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// card led is not higher than our cash card
// see if this is the correct hand for the cash
if ( ((bPlayingInHand) && (m_nTargetHand == IN_HAND)) ||
((!bPlayingInHand) && (m_nTargetHand == IN_DUMMY)) )
{
// this is the right time to play the cash card
// but do a special test here -- see if partner
// has a singleton which is higher than this card
if ( (bPlayingInHand && (dummySuit.GetNumCards() == 1) &&
(*(dummySuit[0]) > *m_pConsumedCard)) ||
(!bPlayingInHand && (declarerSuit.GetNumCards() == 1) &&
(*(declarerSuit[0]) > *m_pConsumedCard)) )
{
status << "3PLCSH54! Partner has a singleton which is higher than the " &
m_pConsumedCard->GetName() & " we were going to cash, so skip the cash play for now.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// also check if partner has nothing but winners in his hand
if ( (bPlayingInHand && (dummySuit.GetNumCards() > 0) && (combinedSuit.GetNumDummyLosers() == 0) && (combinedSuit.GetNumDeclarerLosers() > 0)) ||
(!bPlayingInHand && (declarerSuit.GetNumCards() > 0) && (combinedSuit.GetNumDeclarerLosers() == 0) && (combinedSuit.GetNumDummyLosers() > 0)) )
{
/*
* ???
*/
status << "5PLCSH54a! We could cash the " & m_pConsumedCard->GetName() &
(bPlayingInHand? " in hand" : " in dummy") & ", but we have no losers in " &
(bPlayingInHand? " in dummy" : " in hand") & " in the suit, so skip this play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
pPlayCard = m_pConsumedCard;
status << "PLCSH55! The opponents led a " & STSS(m_nSuit) &
", so cash the " & pPlayCard->GetFaceName() & " now.\n";
}
else
{
// not the right hand, so discard from this hand
// but skip if we have no losers in this hand but do in the other
if ( (m_nTargetHand == IN_HAND) &&
(dummySuit.GetNumCards() > 0) &&
(combinedSuit.GetNumDummyLosers() == 0) &&
(combinedSuit.GetNumDeclarerLosers() > 0))
{
// no losers in dummy to discard, but some in hand!
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
if ( (m_nTargetHand == IN_DUMMY) &&
(declarerSuit.GetNumCards() > 0) &&
(combinedSuit.GetNumDeclarerLosers() == 0) &&
(combinedSuit.GetNumDummyLosers() > 0))
{
// no losers in hand to discard, but some in dummy!
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// else go ahead and discard
pPlayCard = playEngine.GetDiscard();
status << "PLCSH56! Discard a " & STSS(m_nSuit) & " from " &
(bPlayingInHand? "hand" : "dummy") &
" in anticipation of cashing the " &
m_pConsumedCard->GetFaceName() & " in " &
(bPlayingInHand? "dummy" : "hand") & ".\n";
}
}
else
{
// wrong suit led, so no point here
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// else we're ok
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 2:
// playing third -- this play may or may not be active
// i.e., may have started one cash, then switched to another
// see if the wrong suit was led
if (nSuitLed != m_nSuit)
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// see if RHO has trumped
if (bTrumped)
{
status << "2PLCSH64! RHO has trumped, so abandon the cashing play for this round.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// see if the current top card in the trick is higher than ours
if (*pTopCard > *m_pConsumedCard)
{
status << "2PLCSH66! the " & m_pConsumedCard->GetName() & " can't beat the " &
pTopCard->GetName() & ", so skip the cash.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// else check which hand we're playing in
if (bPlayingInHand)
{
// playing from our own hand (declarer)
// see if it's time to cash
if (m_nTargetHand == IN_HAND)
{
// proceed
pPlayCard = m_pConsumedCard;
status << "PLCSH68! Cash the " & pPlayCard->GetName() & " from hand.\n";
}
else
{
// cash is/was in dummy
if (bTrumped)
{
pPlayCard = playEngine.GetDiscard();
status << "2PLCSH70! RHO's trump negates our cash; discard the " &
pPlayCard->GetName() & ".\n";
}
else
{
// see if we need to win in this hand to cash the remaining winnners
if ((dummySuit.GetNumCards() == 0) && (declarerSuit.GetNumCards() > 1) &&
(declarerSuit.GetNumLosers() == 0) && (*declarerSuit[0] > *pCardLed))
{
pPlayCard = declarerSuit.GetLowestCardAbove(pCardLed);
status << "PLCSH71! Our cash of the " & pCardLed->GetName() &
" from dummy is holding, but we need to win in the hand to cash the remaining winners, so play the " &
pPlayCard->GetName() & " here.\n";
}
else
{
pPlayCard = playEngine.GetDiscard();
status << "PLCSH72! Our cash of the " & pCardLed->GetName() &
" from dummy is holding, so discard the " & pPlayCard->GetName() & ".\n";
}
}
}
}
else
{
// playing in dummy
// see if it's time to cash
if (m_nTargetHand == IN_DUMMY)
{
// proceed
pPlayCard = m_pConsumedCard;
status << "PLCSH74! Cash the " & pPlayCard->GetName() &
" from dummy.\n";
}
else
{
// cashed from hand, so discard
if (bTrumped)
{
pPlayCard = playEngine.GetDiscard();
status << "2PLCSH76! RHO's trump negates our cash; discard the " &
pPlayCard->GetName() & ".\n";
}
else
{
// see if we need to win here in dummy to cash the remaining winnners
if ((declarerSuit.GetNumCards() == 0) && (dummySuit.GetNumCards() > 1) &&
(dummySuit.GetNumLosers() == 0) && (*dummySuit[0] > *pCardLed))
{
pPlayCard = dummySuit.GetLowestCardAbove(pCardLed);
status << "PLCSH77! Our cash of the " & pCardLed->GetName() &
" from hand is holding, but we need to win in dummy to cash the remaining winners, so play the " &
pPlayCard->GetName() & " here.\n";
}
else
{
pPlayCard = playEngine.GetDiscard();
status << "PLCSH78! Our cash of the " &
pCardLed->GetName() & " from hand is holding, so discard the " &
pPlayCard->GetName() & ".\n";
}
}
}
}
// all's OK
m_nStatusCode = PLAY_COMPLETE;
break;
case 3:
// playing fourth
// make sure the play is in progress
if (m_nStatusCode != PLAY_IN_PROGRESS)
return PLAY_INACTIVE;
// since opponent led the suit, we are still trying to cash
status << "3PLCSH80! the opponents led a " & STSS(nSuitLed) &
", so see if we can finish up the cash play here.\n";
// see if RHO (or partner) has trumped
if (bTrumped)
{
status << "2PLCSH82! The suit was trumped, so abandon the cashing play for this round.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// see if the current (opponents') top card in the trick is higher than ours
if ((!bPartnerHigh) && (*pTopCard > *m_pConsumedCard))
{
status << "2PLCSH83! the " & m_pConsumedCard->GetName() & " we intended to cash can't beat the " &
pTopCard->GetName() & ", so skip the cash.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// else see if partner played a top card (which wasn't part of the cash)
if ((bPartnerHigh) && (m_pConsumedCard != pPartnersCard))
{
status << "2PLCSH84! Partner's " & pTopCard->GetName() & " is high, so skip the cash of the " &
m_pConsumedCard->GetFaceName() & ".\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// else check which hand we're playing in
if (bPlayingInHand)
{
// playing from our own hand (declarer)
// see if it's time to cash
if (m_nTargetHand == IN_HAND)
{
// cashing from hand, so do it
// BUT see if we have a lower card which would win!
if (declarerSuit.GetNumCardsAbove(pTopCard) > 1)
{
CCard* pCard = declarerSuit.GetLowestCardAbove(pTopCard);
status << "3PLCSH85! We can actually play the " & pCard->GetFaceName() &
" to win this trick, so postpone the cash of the " &
m_pConsumedCard->GetFaceName() & ".\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
pPlayCard = m_pConsumedCard;
status << "PLCSH86! Cash the " & pPlayCard->GetName() & " from hand.\n";
}
else
{
// cash is/was in dummy, so discard
if (bTrumped)
{
pPlayCard = playEngine.GetDiscard();
status << "2PLCSH87! RHO's trump negates our cash; discard the " &
pPlayCard->GetName() & ".\n";
}
else
{
// see if we need to win in this hand to cash the remaining winnners
if ((dummySuit.GetNumCards() == 0) && (declarerSuit.GetNumCards() > 1) &&
(declarerSuit.GetNumLosers() == 0) && (*declarerSuit[0] > *pCardLed))
{
pPlayCard = declarerSuit.GetLowestCardAbove(pCardLed);
status << "PLCSH88a! Our cash of the " & m_pConsumedCard->GetName() &
" from dummy is holding, but we need to win in the hand to cash the remaining winners, so play the " &
pPlayCard->GetName() & " here.\n";
}
else
{
pPlayCard = playEngine.GetDiscard();
status << "PLCSH88b! Our cash of the " &
m_pConsumedCard->GetName() & " from dummy is holding, so discard the " &
pPlayCard->GetName() & ".\n";
}
}
}
}
else
{
// playing in dummy
// see if it's time to cash
if (m_nTargetHand == IN_DUMMY)
{
// cashing from dummy, so do it
// BUT see if we have a lower card which would win!
if (dummySuit.GetNumCardsAbove(pTopCard) > 1)
{
CCard* pCard = dummySuit.GetLowestCardAbove(pTopCard);
status << "3PLCSH89! We can actually play the " & pCard->GetFaceName() &
" to win this trick, so postpone the cash of the " &
m_pConsumedCard->GetFaceName() & ".\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
pPlayCard = m_pConsumedCard;
status << "PLCSH90! Cash the " & pPlayCard->GetName() &
" from dummy.\n";
}
else
{
// cashed from hand, so discard
if (bTrumped)
{
pPlayCard = playEngine.GetDiscard();
status << "2PLCSH91! RHO's trump negates our cash; discard the " &
pPlayCard->GetName() & ".\n";
}
else
{
// see if we need to win here in dummy to cash the remaining winnners
if ((declarerSuit.GetNumCards() == 0) && (dummySuit.GetNumCards() > 1) &&
(dummySuit.GetNumLosers() == 0) && (*dummySuit[0] > *pCardLed))
{
pPlayCard = dummySuit.GetLowestCardAbove(pCardLed);
status << "PLCSH92a! Our cash of the " & m_pConsumedCard->GetName() &
" from hand is holding, but we need to win in dummy to cash the remaining winners, so play the " &
pPlayCard->GetName() & " here.\n";
}
else
{
pPlayCard = playEngine.GetDiscard();
status << "PLCSH92b! Our cash of the " &
m_pConsumedCard->GetName() & " from hand is holding, so discard the " &
pPlayCard->GetName() & ".\n";
}
}
}
}
// all's OK
m_nStatusCode = PLAY_COMPLETE;
break;
}
// ### TEMP ###
if (pDOC->GetCurrentPlayerPosition() == playEngine.GetPlayerPosition())
ASSERT(playEngine.GetPlayer()->HasCard(pPlayCard));
else
ASSERT(playEngine.GetPartner()->HasCard(pPlayCard));
// done
ASSERT(pPlayCard->IsValid());
return m_nStatusCode;
}
//
// GetLeadCard()
//
CCard* CPlayEngine::GetLeadCard()
{
// default implementation
CPlayerStatusDialog& status = *m_pStatusDlg;
CCard* pLeadCard = NULL;
int nTrumpSuit = pDOC->GetTrumpSuit();
// look to see if we have any winners
if (m_pHand->GetNumWinners() > 0)
{
// return the first winner found
// but avoid the trump suit unless there are no other winners
int nSuit = NONE;
if (ISSUIT(nTrumpSuit))
nSuit = GetNextSuit(nTrumpSuit);
else
nSuit= CLUBS; // else start with the club suit
//
for(int i=0;i<4;i++)
{
CSuitHoldings& suit = m_pHand->GetSuit(nSuit);
if ((suit.GetNumTopCards() > 0) && (nSuit != nTrumpSuit))
{
pLeadCard = suit.GetTopSequence().GetBottomCard();
status << "PLYLDA! With no other obvious plays, cash a winner with the " & pLeadCard->GetName() & ".\n";
ASSERT(m_pHand->HasCard(pLeadCard));
return pLeadCard;
}
// else look at the next suit
nSuit = GetNextSuit(nSuit);
}
}
// if we have a card in an unbid suit, lead from that suit.
CArray<int,int> suitsUnbid;
int numSuitsUnbid = pDOC->GetSuitsUnbid(suitsUnbid);
for(int i=0;i<numSuitsUnbid;i++)
{
CSuitHoldings& suit = m_pHand->GetSuit(suitsUnbid[i]);
if (suit.GetNumCards() > 0)
{
pLeadCard = suit.GetBottomCard();
status << "PLYLDB! With no other clear plays available, lead a card from the unbid " &
STSS(pLeadCard->GetSuit()) & " suit.\n";
ASSERT(m_pHand->HasCard(pLeadCard));
return pLeadCard;
}
}
// no winners in hand, so just lead anything
if (ISSUIT(nTrumpSuit))
{
// playing in a suit contract
// if we have any trumps left, _and_ have a singleton, then lead it
if ((m_pHand->GetNumTrumps() > 0) && (m_pHand->GetNumSingletons() > 0))
{
// search for the singleton suit
BOOL bSuitFound = FALSE;
int nSuit;
for(int i=3;i>=0;i--)
{
nSuit = m_pHand->GetSuitsByLength(3);
if (m_pHand->GetNumCardsInSuit(nSuit) > 1)
break; // oops, no more singletons
// check if this is a non-trump singleton suit
if ((m_pHand->GetNumCardsInSuit(nSuit) == 1) && (nSuit != nTrumpSuit))
{
bSuitFound = TRUE;
break;
}
}
// lead a card from the suit
if (bSuitFound)
{
CSuitHoldings& suit = m_pHand->GetSuit(nSuit);
pLeadCard = suit[0];
status << "PLYLDC! Lead the singleton " & pLeadCard->GetName() & " in the hopes of setting up a ruff later.\n";
ASSERT(m_pHand->HasCard(pLeadCard));
return pLeadCard;
}
}
// else we're stuck -- just lead a card from the worst suit
// (i.e., keep the "good" suits alive)
for(int i=3;i>=0;i--)
{
int nSuit = m_pHand->GetSuitsByPreference(i);
// avoid leading from the trump suit if we can help it
if (nSuit == nTrumpSuit)
continue;
// else lead from this suit
if (m_pHand->GetNumCardsInSuit(nSuit) > 0)
{
pLeadCard = m_pHand->GetSuit(nSuit).GetBottomCard();
ASSERT(m_pHand->HasCard(pLeadCard));
return pLeadCard;
}
}
// else we're stuck with leading a trump
if (m_pHand->GetNumTrumps() > 0)
return m_pHand->GetSuit(nTrumpSuit).GetAt(0);
}
else
{
// playing in notrump
// lead a card from the worst suit, keeping the good suits alive
for(int i=3;i>=0;i--)
{
int nSuit = m_pHand->GetSuitsByPreference(i);
if (m_pHand->GetNumCardsInSuit(nSuit) > 0)
{
pLeadCard = m_pHand->GetSuit(nSuit).GetBottomCard();
ASSERT(m_pHand->HasCard(pLeadCard));
return pLeadCard;
}
}
}
// we should NEVER get here
ASSERT(FALSE);
return NULL;
}
//
// Perform()
//
PlayResult CForce::Perform(CPlayEngine& playEngine, CCombinedHoldings& combinedHand,
CCardLocation& cardLocation, CGuessedHandHoldings** ppGuessedHands,
CPlayerStatusDialog& status, CCard*& pPlayCard)
{
// a "force" is a play of the lowest possible card that will force out
// a key enemy card
// check which hand this is
int nOrdinal = pDOC->GetNumCardsPlayedInRound();
CPlayer* pPlayer = playEngine.GetPlayer();
BOOL bPlayingInHand = (pDOC->GetCurrentPlayer() == pPlayer);
CHandHoldings& playerHand = *(combinedHand.GetPlayerHand());
CHandHoldings& dummyHand = *(combinedHand.GetPartnerHand());
CCombinedSuitHoldings& combinedSuit = combinedHand.GetSuit(m_nSuit);
CSuitHoldings& playerSuit = playerHand.GetSuit(m_nSuit);
CSuitHoldings& dummySuit = dummyHand.GetSuit(m_nSuit);
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
int nSuitLed = NONE;
if (pCardLed)
nSuitLed = pCardLed->GetSuit();
// see if a trump was played in this round
BOOL bTrumped = FALSE;
if ((nSuitLed != pDOC->GetTrumpSuit()) && (pDOC->WasTrumpPlayed()))
bTrumped = TRUE;
pPlayCard = NULL;
// test preconditions
if (!CPlay::IsPlayUsable(combinedHand, playEngine))
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
//
// test to make sure that the required played cards have indeed been played
//
if (m_pRequiredPlayedCardsList)
{
// check if any of the cards that should have benen played
// are still outstanding
for(int i=0;i<m_pRequiredPlayedCardsList->GetNumCards();i++)
{
CCard* pCard = (*m_pRequiredPlayedCardsList)[i];
if (playEngine.IsCardOutstanding(pCard))
{
status << "5PLFRCA! The force play of the " & m_pConsumedCard->GetFaceName() &
" to force out the " & m_nTargetCardVal &
" is not yet viable as the card [" & pCard->GetFaceName() &
"] is still outstanding.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
}
//
// check our position in the play
//
switch(nOrdinal)
{
case 0:
// we're leading, player #0
if (bPlayingInHand)
{
// playing from our own hand (declarer)
if (m_nTargetHand == IN_HAND)
{
// play the card necessary to force the opponent
pPlayCard = playerSuit.GetHighestCardBelow(m_nTargetCardVal);
// NCR check that dummy does not have a singleton honor that's same value as our lead
if(dummySuit.IsSingleton()
&& ((dummySuit.GetTopCard()->GetFaceValue() > pPlayCard->GetFaceValue()) // NCR-28
|| (combinedHand.AreEquivalentCards(pPlayCard, dummySuit.GetTopCard()))))
pPlayCard = playerSuit.GetBottomCard(); // NCR get lowest card
if (pPlayCard == NULL)
{
status << "4PLFRC02! Error in force play -- no cards in declarer hand usable in a force play.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
status << "PLFRC04! Play the " & pPlayCard->GetName() &
" from hand to force out the opponents' " & CardValToString(m_nTargetCardVal) & ".\n";
}
else
{
// forcing from dummy, so lead a low card
if (playerSuit.GetNumCards() > 0)
{
pPlayCard = playerSuit.GetBottomCard();
status << "PLFRC06! Lead a low " & STSS(m_nSuit) &
" (" & pPlayCard->GetFaceName() &
") from hand to trigger a force play in dummy.\n";
}
else
{
// oops, no card in the suit to lead!
status << "4PLFRC08! Oops, we can't start a force play in the " & STSS(m_nSuit) &
" suit from declarer, since we have no cards in the suit.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
}
}
else
{
// leading from dummy
if (m_nTargetHand == IN_DUMMY)
{
// forcing from dummy, so do it
pPlayCard = dummySuit.GetHighestCardBelow(m_nTargetCardVal);
if (pPlayCard == NULL)
{
status << "4PLFRC10! Error in force play -- no cards in dummy usable in a force play.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
status << "PLFRC12! Play the " & pPlayCard->GetName() &
" from dummy to force out the opponents' " & CardValToString(m_nTargetCardVal) & ".\n";
}
else
{
// forcing from hand, so lead a low card from dummy
if (dummySuit.GetNumCards() > 0)
{
pPlayCard = dummySuit.GetBottomCard();
status << "PLFRC14! Lead a low " & STSS(m_nSuit) &
" (" & pPlayCard->GetFaceName() &
") from dummy to trigger a force play in hand.\n";
}
else
{
// oops, no card in the suit to lead!
status << "4PLFRC16! Oops, we can't start a force play in the " & STSS(m_nSuit) &
" suit from dummy, since we have no cards in the suit.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
}
}
// all went OK
m_nStatusCode = PLAY_IN_PROGRESS;
// m_nStatusCode = PLAY_COMPLETE;
break;
case 1:
// playing second -- see if we can still force
// (i.e., the right suit was led, and the card led < target card)
if ((nSuitLed == m_nSuit) && (pCardLed->GetFaceValue() < m_nTargetCardVal))
{
// opponent led the suit, so we still try to force
if ( ((bPlayingInHand) && (m_nTargetHand == IN_HAND)) ||
((!bPlayingInHand) && (m_nTargetHand == IN_DUMMY)) )
{
// this is the right time to play the forcing card
if (bPlayingInHand)
pPlayCard = playerSuit.GetHighestCardBelow(m_nTargetCardVal);
else
pPlayCard = dummySuit.GetHighestCardBelow(m_nTargetCardVal);
// check for error
if (pPlayCard == NULL)
{
status << "4PLFRC20! Error in force play -- no cards in " &
(bPlayingInHand? "hand" : "dummy") & " usable in a force play.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
// got the forcing card
status << "PLFRC22! The opponents led a " & STSS(m_nSuit) &
", so play the " & pPlayCard->GetName() & " from " &
(bPlayingInHand? "hand" : "dummy") & " to try and force out the " &
CardValToString(m_nTargetCardVal) & " now.\n";
// m_nStatusCode = PLAY_IN_PROGRESS;
m_nStatusCode = PLAY_COMPLETE;
}
else
{
// not the right hand. so discard
pPlayCard = playEngine.GetDiscard();
status << "4PLFRC24! We're not in the right position to play a forcing card, so discard the " &
pPlayCard->GetName() & ".\n";
m_nStatusCode = PLAY_POSTPONE;
}
}
else
{
// wrong suit led, so no point here
m_nStatusCode = PLAY_POSTPONE;
}
// done
return m_nStatusCode;
break;
case 2:
// playing third
// sanity check
if ((m_nStatusCode != PLAY_IN_PROGRESS) || (nSuitLed != m_nSuit))
{
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
// see if RHO trumped
if (bTrumped)
{
status << "5PLFR30! RHO trumped, rendering the force play of the " & m_pConsumedCard->GetFaceName() &
" ineffective, so skip the play.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
// see if we're in the correct hand
if ( (bPlayingInHand && (m_nTargetHand == IN_HAND)) ||
(!bPlayingInHand && (m_nTargetHand == IN_DUMMY)) )
{
// see if RHO played the target card
CCard* pRHOCard = pDOC->GetCurrentTrickCardByOrder(1);
if (pRHOCard->GetFaceValue() >= m_nTargetCardVal)
{
status << "5PLFR50! RHO played the " & CardValToString(m_nTargetCardVal) &
", so skip this force play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
// the target card has not been played yet, so proceed
if (bPlayingInHand)
pPlayCard = playerSuit.GetHighestCardBelow(m_nTargetCardVal);
else
pPlayCard = dummySuit.GetHighestCardBelow(m_nTargetCardVal);
// NCR check if our card is less than the top card already played
if(pPlayCard < pDOC->GetCurrentTrickHighCard())
{
m_nStatusCode = PLAY_POSTPONE; // or NOT_VIABLE ???
return m_nStatusCode;
}
// see if we played a card from the other hand that's equivalent
// to this card; if so, discard low
CSuitHoldings testSuit;
testSuit << combinedSuit;
testSuit << pCardLed; // needed for valid test
//
if (testSuit.AreEquivalentCards(pCardLed, pPlayCard))
{
// the opposite card can do the trick
if (bPlayingInHand && (playerSuit.GetNumCards() > 1))
{
pPlayCard = playerSuit.GetBottomCard();
status << "PLFRC55! The " & pCardLed->GetName() & " is sufficient for the force, so discard the " &
pPlayCard->GetFaceName() & " from hand.\n";
}
else if (!bPlayingInHand && (dummySuit.GetNumCards() > 1))
{
pPlayCard = dummySuit.GetBottomCard();
status << "PLFRC56! The " & pCardLed->GetName() & " is sufficient for the force, so discard the " &
pPlayCard->GetFaceName() & " from dummy.\n";
}
}
else
{
// check for error
if (pPlayCard == NULL)
{
status << "4PLFRC61! Error in force play -- no cards in " &
(bPlayingInHand? "hand" : "dummy") & " usable in a force play.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
// got the forcing card
status << "PLFRC62! Play the " & pPlayCard->GetName() & " from " &
(bPlayingInHand? "hand" : "dummy") & " to try and force out the " &
CardValToString(m_nTargetCardVal) & " now.\n";
m_nStatusCode = PLAY_COMPLETE;
}
}
else
{
// we're in the opposite (discard) hand. so discard
pPlayCard = playEngine.GetDiscard();
status << "PLFRC64! We're in the opposite hand of a force play, so discard the " &
pPlayCard->GetName() & ".\n";
m_nStatusCode = PLAY_COMPLETE;
}
break;
case 3:
// playing fourth -- can't use a force play here
return PLAY_POSTPONE;
break;
}
// done
ASSERT(pPlayCard->IsValid());
return m_nStatusCode;
}
//
// Perform()
//
PlayResult CTypeAFinesse::Perform(CPlayEngine& playEngine, CCombinedHoldings& combinedHand,
CCardLocation& cardLocation, CGuessedHandHoldings** ppGuessedHands,
CPlayerStatusDialog& status, CCard*& pPlayCard)
{
// Type A Finesse
// - opportunistic play of a non-top card in second position to
// finesse against LHO
// check which hand this is
int nOrdinal = pDOC->GetNumCardsPlayedInRound();
CPlayer* pPlayer = playEngine.GetPlayer();
BOOL bPlayingInHand = (pDOC->GetCurrentPlayer() == pPlayer);
CHandHoldings& playerHand = *(combinedHand.GetPlayerHand());
CHandHoldings& dummyHand = *(combinedHand.GetPartnerHand());
CSuitHoldings& playerSuit = playerHand.GetSuit(m_nSuit);
CSuitHoldings& dummySuit = dummyHand.GetSuit(m_nSuit);
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
int nSuitLed = NONE;
if (pCardLed)
nSuitLed = pCardLed->GetSuit();
// see if a trump was played in this round
BOOL bTrumped = FALSE;
if ((nSuitLed != pDOC->GetTrumpSuit()) && (pDOC->WasTrumpPlayed()))
bTrumped = TRUE;
CCard* pTopCard = pDOC->GetCurrentTrickHighCard();
pPlayCard = NULL;
CCard* pOppCard = NULL;
// test preconditions
if (!CPlay::IsPlayUsable(combinedHand, playEngine))
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// check our position in the play
switch(nOrdinal)
{
case 0:
// can't use in first seat
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
case 1:
// playing second -- this is the key to the finesse
// see if the wrong suit was led
if (nSuitLed != m_nSuit)
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// check which hand we're playing in
if (bPlayingInHand)
{
// playing second in our own hand (declarer)
// see if it's time to finesse
if (m_nTargetHand == IN_HAND)
{
// play the finesse card
pPlayCard = m_pConsumedCard;
status << "PLAFN20! Opportunistically finesse the " & pPlayCard->GetName() & " from hand in second position against " &
PositionToString(playEngine.GetLHOpponent()->GetPosition()) & ".\n";
}
else
{
// finessing in hand, but this is dummy? messed up
status << "4PLAFN30! We intended to finesse in hand, but ended up here in dummy in third position -- so skip this play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
else
{
// playing third in dummy
// see if it's time to finnesse here
if (m_nTargetHand == IN_DUMMY)
{
// finesse the card from dummy
pPlayCard = m_pConsumedCard;
status << "PLAFN54! Opportunistically finesse the " & pPlayCard->GetName() & " from dummy in second position against " &
PositionToString(playEngine.GetRHOpponent()->GetPosition()) & ".\n";
}
else
{
// messed up
status << "4PLAFN60! We intended to finesse in hand, but ended up here in dummy in third position -- so skip this play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
// all went OK
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 2:
// can't use this play in third posiiton
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
case 3:
// in 4th position, simply discard
if (m_nStatusCode == PLAY_IN_PROGRESS)
{
// discard here, but see if we won
if (pTopCard == m_pConsumedCard)
{
pPlayCard = playEngine.GetDiscard();
status << "PLAFN76! The finesse worked; finish the play by discarding the " & pPlayCard->GetName() & ".\n";
m_nStatusCode = PLAY_COMPLETE;
}
else
{
status << "PLAFN77! The finesse failed, so abandon the play\n";
m_nStatusCode = PLAY_NOT_VIABLE;
}
return m_nStatusCode;
}
else
{
// play is not active
m_nStatusCode = PLAY_INACTIVE;
return m_nStatusCode;
}
}
// done
ASSERT(pPlayCard->IsValid());
return m_nStatusCode;
}
//
// Perform()
//
PlayResult CHoldUp::Perform(CPlayEngine& playEngine, CCombinedHoldings& combinedHand,
CCardLocation& cardLocation, CGuessedHandHoldings** ppGuessedHands,
CPlayerStatusDialog& status, CCard*& pPlayCard)
{
// check which hand this is
int nOrdinal = pDOC->GetNumCardsPlayedInRound();
CPlayer* pPlayer = playEngine.GetPlayer();
BOOL bPlayingInHand = (pDOC->GetCurrentPlayer() == pPlayer);
CHandHoldings& playerHand = *(combinedHand.GetPlayerHand());
CHandHoldings& dummyHand = *(combinedHand.GetPartnerHand());
CSuitHoldings& playerSuit = playerHand.GetSuit(m_nSuit);
CSuitHoldings& dummySuit = dummyHand.GetSuit(m_nSuit);
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
int nSuitLed = NONE;
if (pCardLed)
nSuitLed = pCardLed->GetSuit();
// see if a trump was played in this round
BOOL bTrumped = FALSE;
int nTrumpSuit = pDOC->GetTrumpSuit();
if ((nSuitLed != nTrumpSuit) && (pDOC->WasTrumpPlayed()))
bTrumped = TRUE;
pPlayCard = NULL;
CCard* pOppCard = NULL;
//
CCard* pRoundTopCard = pDOC->GetCurrentTrickHighCard();
CCard* pDeclarerCard = pDOC->GetCurrentTrickCard(playEngine.GetPlayerPosition());
CCard* pDummysCard = pDOC->GetCurrentTrickCard(playEngine.GetPartnerPosition());
CCard* pPartnersCard = bPlayingInHand? pDummysCard : pDeclarerCard;
BOOL bPartnerHigh = (pRoundTopCard == pPartnersCard);
//
BOOL bValid = FALSE;
// test preconditions
if (!CPlay::IsPlayUsable(combinedHand, playEngine))
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// a holdup is simple -- discard instead of winning
switch(nOrdinal)
{
case 0:
// can't hold up here
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
case 1:
if (bPlayingInHand)
pPlayCard = playerHand.GetDiscard();
else
pPlayCard = dummyHand.GetDiscard();
status << "PLHLD04! Hold up a round of " & STS(m_nSuit) &
" and discard the " & pPlayCard->GetFaceName() & " from " &
(bPlayingInHand? "hand" : "dummy") & ".\n";
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 2:
// can't hold up here
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
case 3:
// complete the hold-up
if (m_nStatusCode != PLAY_IN_PROGRESS)
return PLAY_INACTIVE;
if (bPlayingInHand)
pPlayCard = playerHand.GetDiscard();
else
pPlayCard = dummyHand.GetDiscard();
status << "PLHLD08! Finish the hold-up and discard the " &
pPlayCard->GetFaceName() & " from " & (bPlayingInHand? "hand" : "dummy") & ".\n";
m_nStatusCode = PLAY_COMPLETE;
break;
}
// done
ASSERT(pPlayCard->IsValid());
return m_nStatusCode;
}
//
// Perform()
//
PlayResult CType1Finesse::Perform(CPlayEngine& playEngine, CCombinedHoldings& combinedHand,
CCardLocation& cardLocation, CGuessedHandHoldings** ppGuessedHands,
CPlayerStatusDialog& status, CCard*& pPlayCard)
{
// Type I Finesse
// - lead of a low card towards a higher card in the opposite hand,
// which holds a higher cover card and a commanding top card.
// e.g., AQ3 (dummy) / 4 (hand) -- lead the 4, then finesse the Q
// check which hand this is
int nOrdinal = pDOC->GetNumCardsPlayedInRound();
CPlayer* pPlayer = playEngine.GetPlayer();
BOOL bPlayingInHand = (pDOC->GetCurrentPlayer() == pPlayer);
CHandHoldings& playerHand = *(combinedHand.GetPlayerHand());
CHandHoldings& dummyHand = *(combinedHand.GetPartnerHand());
CSuitHoldings& playerSuit = playerHand.GetSuit(m_nSuit);
CSuitHoldings& dummySuit = dummyHand.GetSuit(m_nSuit);
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
int nSuitLed = NONE;
if (pCardLed)
nSuitLed = pCardLed->GetSuit();
// see if a trump was played in this round
BOOL bTrumped = FALSE;
if ((nSuitLed != pDOC->GetTrumpSuit()) && (pDOC->WasTrumpPlayed()))
bTrumped = TRUE;
pPlayCard = NULL;
CCard* pOppCard = NULL;
// BOOL bLeading = TRUE;
CString strRHO = bPlayingInHand? playEngine.szRHO : playEngine.szLHO;
// test preconditions
if (!CPlay::IsPlayUsable(combinedHand, playEngine))
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// check our position in the play
switch(nOrdinal)
{
case 0:
// we're leading, player #0
if (bPlayingInHand)
{
// playing from our own hand (declarer)
// see where the finese card is located
if (m_nTargetHand == IN_HAND)
{
// can't finesse here
status << "4PL1FNS10! Can't use this (Type I) finesse leading from hand, as the finesse card (" &
m_pConsumedCard->GetName() & ") and its covers are in our own hand.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
else
{
// finessing from dummy so lead low card of the suit from hand
if (playerHand.GetNumCardsInSuit(m_nSuit) > 0)
{
pPlayCard = playerHand.GetSuit(m_nSuit).GetBottomCard();
status << "PL1FN12! Leading a low " & STSS(m_nSuit) &
" (the " & pPlayCard->GetFaceName() &
") from hand to finesse the " &
m_pConsumedCard->GetFaceName() & " in dummy.\n";
}
else
{
// oops, no card in the suit to lead!
status << "4PL1FN14! Oops, we wanted to finesse a " & STSS(m_nSuit) &
" in dummy, but we have no " & STS(m_nSuit) &
" in hand to lead, so we have to abandon the play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
}
}
else
{
// leading from dummy
if (m_nTargetHand == IN_DUMMY)
{
// leading from dummy & finessing in dummy? no can do
status << "4PL1FNS20! Can't use this (Type I) finesse leading from dummy, as the finesse card (" &
m_pConsumedCard->GetName() & ") and its covers are in dummy.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
else
{
// leading from dummy and finessing in hand, so do it
if (dummyHand.GetNumCardsInSuit(m_nSuit) > 0)
{
pPlayCard = dummyHand.GetSuit(m_nSuit).GetBottomCard();
status << "PL1FN22! Lead a low " & STSS(m_nSuit) &
" (the " & pPlayCard->GetFaceName() &
") from dummy to finesse the " &
m_pConsumedCard->GetFaceName() & " in hand.\n";
}
else
{
// oops, no card in the suit to lead!
status << "4PL1FN24! Oops, we wanted to finesse a " & STSS(m_nSuit) &
" in hand, but we have no " & STS(m_nSuit) &
" in dummy to lead, so we have to abandon the play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
}
}
// at this point, all went OK
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 1:
// playing second -- can't really use the type I finesse here
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
case 2:
// playing third -- this is the key to the finesse
// make sure the play is still on
{
if (m_nStatusCode != PLAY_IN_PROGRESS)
return PLAY_INACTIVE;
// see if the wrong suit was led
if (nSuitLed != m_nSuit)
{
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
// see if LHO trumped
if (bTrumped)
{
status << "3PL1FN50! the opponent has trumped, so abandon the finesse for this round.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// see if RHO showed out
CCard* pLHOCard = pDOC->GetCurrentTrickCardByOrder(1);
if (pLHOCard->GetSuit() != nSuitLed)
{
// oops! RHO showed out! the finesse can't win!
status << "3PL1FN55! Oops -- RHO (" & strRHO &
") showed out of " & STS(nSuitLed) & ", meaning that LHO holds the " &
m_pGapCards->GetAt(0)->GetFaceName() & ", so the finesse cannot succeed -- so skip it.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
/*
// play the cover card
pPlayCard = m_pCoverCards->GetBottomCard();
ASSERT(pPlayCard->IsValid());
status << "3PL1FN55! Oops -- " & playEngine.szLHO & " showed out of " & STS(nSuitLed) &
", meaning that RHO holds the " & m_pGapCards[0]->GetFaceName() &
", so the finesse cannot succeed -- so play the cover card (the " &
pCoverCard->GetFaceName() & ").\n";
m_nStatusCode = PLAY_COMPLETE;
return m_nStatusCode;
*/
}
// check the intervening opponents's card
pOppCard = pDOC->GetCurrentTrickCardByOrder(1);
// else check which hand we're playing in
if (bPlayingInHand)
{
// playing third from our own hand (declarer)
// see if it's time to finesse
if (m_nTargetHand == IN_HAND)
{
// see if RHO's card is higher than the intended finesse
if (*pOppCard > *m_pConsumedCard)
{
// if so, play a cover card if possible
// ??? pPlayCard = dummySuit.GetLowestCardAbove(pOppCard);
pPlayCard = playerSuit.GetTopSequence().GetBottomCard();
status << "PL1FN62! RHO has played a higher card (the " &
pOppCard->GetFaceName() & ") than our intended finesse (the " &
m_pConsumedCard->GetFaceName() & "), so cover with the " &
pPlayCard->GetFaceName() & ".\n";
}
else
{
// OK, finesse the card as intended
pPlayCard = m_pConsumedCard;
status << "PL1FN64! Finesse the " & pPlayCard->GetName() & " from hand.\n";
}
}
else
{
// finessing in hand, but this is dummy? messed up
status << "4PL1FN66! We intended to finesse in hand, but ended up here in dummy in third position -- so skip this play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
else
{
// playing third in dummy
// see if it's time to finnesse here
if (m_nTargetHand == IN_DUMMY)
{
// see if LHO's card is higher than the intended finesse
if (*pOppCard > *m_pConsumedCard)
{
// if so, play a cover card
// NCR-454 Which card to play? Mininum cover or a top sequence card?
pPlayCard = dummySuit.GetLowestCardAbove(pOppCard);
//???NCR-454 pPlayCard = dummySuit.GetTopSequence().GetBottomCard();
status << "PL1FN72! LHO has played a higher card (the " &
pOppCard->GetFaceName() & ") than our intended finesse (the " &
m_pConsumedCard->GetFaceName() & "), so cover with the " &
pPlayCard->GetFaceName() & ".\n";
}
else
{
// finesse the card from dummy
pPlayCard = m_pConsumedCard;
status << "PLCSH74! Finesse the " & pPlayCard->GetName() & " from dummy.\n";
}
}
else
{
// messed up
status << "4PL1FN76! We intended to finesse in hand, but ended up here in dummy in third position -- so skip this play.\n";
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
}
// else all went OK
m_nStatusCode = PLAY_COMPLETE;
break;
}
case 3:
// can't use the type I finesse in 4th position!
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// done
ASSERT(pPlayCard->IsValid());
return m_nStatusCode;
}
//
// Perform()
//
PlayResult CRuff::Perform(CPlayEngine& playEngine, CCombinedHoldings& combinedHand,
CCardLocation& cardLocation, CGuessedHandHoldings** ppGuessedHands,
CPlayerStatusDialog& status, CCard*& pPlayCard)
{
// check which hand this is
int nOrdinal = pDOC->GetNumCardsPlayedInRound();
CPlayer* pPlayer = playEngine.GetPlayer();
BOOL bPlayingInHand = (pDOC->GetCurrentPlayer() == pPlayer);
CHandHoldings& playerHand = *(combinedHand.GetPlayerHand());
CHandHoldings& dummyHand = *(combinedHand.GetPartnerHand());
CSuitHoldings& playerSuit = playerHand.GetSuit(m_nSuit);
CSuitHoldings& dummySuit = dummyHand.GetSuit(m_nSuit);
CCombinedSuitHoldings& combinedSuit = combinedHand.GetSuit(m_nSuit);
CCard* pCardLed = pDOC->GetCurrentTrickCardByOrder(0);
int nSuitLed = NONE;
if (pCardLed)
nSuitLed = pCardLed->GetSuit();
// see if a trump was played in this round
BOOL bTrumped = FALSE;
int nTrumpSuit = pDOC->GetTrumpSuit();
if ((nSuitLed != nTrumpSuit) && (pDOC->WasTrumpPlayed()))
bTrumped = TRUE;
pPlayCard = NULL;
CCard* pOppCard = NULL;
//
CCard* pRoundTopCard = pDOC->GetCurrentTrickHighCard();
CCard* pDeclarerCard = pDOC->GetCurrentTrickCard(playEngine.GetPlayerPosition());
CCard* pDummysCard = pDOC->GetCurrentTrickCard(playEngine.GetPartnerPosition());
CCard* pPartnersCard = bPlayingInHand? pDummysCard : pDeclarerCard;
BOOL bPartnerHigh = (pRoundTopCard == pPartnersCard);
//
BOOL bValid = FALSE;
// test preconditions
if (!CPlay::IsPlayUsable(combinedHand, playEngine))
{
m_nStatusCode = PLAY_INACTIVE;
return PLAY_POSTPONE;
}
// check our position in the play
switch(nOrdinal)
{
case 0:
// we're leading, player #0
if (bPlayingInHand)
{
// playing from our own hand (declarer)? can't do so!
if (m_nTargetHand == IN_HAND)
{
// can't ruff here
// status << "4PLRUF02! Can't ruff a card when leading.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
else
{
// ruffing in dummy -- first check eligibility
if (dummyHand.GetNumCardsInSuit(m_nSuit) > 0)
{
// can't use this now
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
// now lead a low card of the suit from hand
if (combinedSuit.GetNumDeclarerLosers() > 0)
{
pPlayCard = playerHand.GetSuit(m_nSuit).GetBottomCard();
status << "PLRUF04! Lead a low " & STSS(m_nSuit) &
" (the " & pPlayCard->GetFaceName() & ") from hand to ruff in dummy.\n";
}
else
{
// oops, no card in the suit to lead!
status << "4PLRUF08! Oops, we wanted to ruff a " & STSS(m_nSuit) &
" in dummy, but we have no " & STSS(m_nSuit) &
" losers in hand to lead, so we have to abandon the play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
}
}
else
{
// leading from dummy
if (m_nTargetHand == IN_DUMMY)
{
// leading from dummy & ruffing in dummy? no can do
// status << "4PLRUF12! Can't lead from dummy and ruff in dummy at the same time.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
else
{
// ruffing in hand -- first check eligibility
if (playerHand.GetNumCardsInSuit(m_nSuit) > 0)
{
// can't use this now
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
// now lead a low card of the suit from dummy
if (combinedSuit.GetNumDummyLosers() > 0)
{
pPlayCard = dummyHand.GetSuit(m_nSuit).GetBottomCard();
status << "PLRUF14! Lead a low " & STSS(m_nSuit) &
" (the " & pPlayCard->GetFaceName() & ") from dummy to ruff in hand.\n";
}
else
{
// oops, no card in the suit to lead!
status << "4PLRUF18! Oops, we wanted to ruff a " & STSS(m_nSuit) &
" in hand, but we have no " & STS(m_nSuit) &
" losers in dummy to lead, so we have to abandon the play.\n";
m_nStatusCode = PLAY_NOT_VIABLE;
return m_nStatusCode;
}
}
}
// at this point, all went OK
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 1:
// playing second -- may be able to ruff here, intended or not
if (nSuitLed == nTrumpSuit)
{
// but not if a trump was led
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
// an unintended ruff is OK only if the card led is not a trump card,
// _and_ we have zero cards in the suit in the appropriate hand
if ( ((m_nTargetHand == IN_HAND) && (playerHand.GetNumCardsInSuit(nSuitLed) == 0)) ||
((m_nTargetHand == IN_DUMMY) && (dummyHand.GetNumCardsInSuit(nSuitLed) == 0)) )
{
status << "3PLRUF20! We can ruff in the suit led by the opponent.\n";
}
else
{
// status << "3PLRUF21! A ruff here is not possible.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
// see which hand this is
if (bPlayingInHand)
{
// playing second in hand -- see where the ruff is
if (m_nTargetHand == IN_HAND)
{
// ruff here
CSuitHoldings& playerTrumps = playerHand.GetSuit(nTrumpSuit);
if (playerTrumps.GetNumCards() > 0)
{
pPlayCard = playerTrumps.GetBottomCard();
status << "PLRUF30! Ruff in hand with the " & pPlayCard->GetName() & ".\n";
}
else
{
status << "4PLRUF32! Error - no trumps left in hand to use in a ruff.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
}
else
{
// we'll be ruffing in dummy later, so discard
pPlayCard = playEngine.GetDiscard();
status << "PLRUF34! We'll be ruffing in dummy, so discard the " &
pPlayCard->GetName() & " from hand.\n";
}
}
else
{
// playing second in dummy -- see where the finese card is located
if (m_nTargetHand == IN_DUMMY)
{
// ruff here
CSuitHoldings& dummyTrumps = dummyHand.GetSuit(nTrumpSuit);
if (dummyTrumps.GetNumCards() > 0)
{
pPlayCard = dummyTrumps.GetBottomCard();
status << "PLRUF40! Ruff in dummy with the " & pPlayCard->GetName() & ".\n";
}
else
{
status << "4PLRUF42! Error - no trumps left in dummy to use in a ruff.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
}
else
{
// finessing in hand, so discard from dummy
pPlayCard = playEngine.GetDiscard();
status << "PLRUF44! We'll be ruffing in hand, so discard the " &
pPlayCard->GetName() & " from dummy.\n";
}
}
// done here
m_nStatusCode = PLAY_IN_PROGRESS;
break;
case 2: case 3:
// playing third -- ruff if possible
// if (m_nStatusCode != PLAY_IN_PROGRESS)
// return PLAY_INACTIVE;
// unintended ruff is OK only if the card led is not a trump card,
// _and_ we have zero cards in the suit
if (bPlayingInHand)
{
if ( (m_nStatusCode == PLAY_IN_PROGRESS) ||
((nSuitLed != nTrumpSuit) && (playerHand.GetNumCardsInSuit(nSuitLed) == 0)) )
bValid = TRUE;
}
else
{
if ( (m_nStatusCode == PLAY_IN_PROGRESS) ||
((nSuitLed != nTrumpSuit) && (dummyHand.GetNumCardsInSuit(nSuitLed) == 0)) )
bValid = TRUE;
}
//
if (bValid)
{
// bonanza
// status << "3PLRUF50! We can ruff in the suit led by the opponent.\n";
// status << "3PLRUF50! We can ruff here.\n";
}
else
{
// status << "3PLRUF51! A ruff here is not possible.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
// at this point, we MUST be in the proper hand to ruff
if (bPlayingInHand)
{
// playing third/fourth in hand -- see where the ruff is
if (m_nTargetHand == IN_HAND)
{
// ruff here
CSuitHoldings& playerTrumps = playerHand.GetSuit(nTrumpSuit);
if (playerTrumps.GetNumCards() > 0)
{
// see if RHO trumped
if (bTrumped && (pPartnersCard != pRoundTopCard))
{
// see if we can beat it
pPlayCard = playerTrumps.GetLowestCardAbove(pRoundTopCard);
if (pPlayCard)
{
status << "PLRUF56! Overruff RHO's trump " & pRoundTopCard->GetFaceName() &
" with the " & pPlayCard->GetFaceName() & ".\n";
}
else
{
status << "4PLRUF58! RHO ruffed, and we can't overruff.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
}
else if (pPartnersCard == pRoundTopCard)
{
status << "4PLRUF59! Partner'" & pPartnersCard->GetName() & " is high, so don't ruff it.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
else
{
// go ahead and ruff
pPlayCard = playerTrumps.GetBottomCard();
status << "PLRUF60! Ruff in hand with the " & pPlayCard->GetName() & ".\n";
}
}
else
{
status << "4PLRUF62! Error - no trumps left in hand to use in a ruff.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
}
else
{
// if we're playing 4th, we can discard (ruffed opposite)
if (nOrdinal == 3)
{
if (bPartnerHigh)
{
pPlayCard = playEngine.GetDiscard();
status << "PLRUF63! Complete the ruff by discarding the " & pPlayCard->GetName() & " from hand.\n";
}
else
{
// oops, opponents overruffed
status << "3PLRUF63a! Oops, the opponents overruffed, so skip the play.\n";
m_nStatusCode = PLAY_FAILED;
return m_nStatusCode;
}
}
else
{
// can't use _this_ ruff here
// status << "4PLRUF64! Oops, we ended up in hand opposite a ruff in dummy.\n";
// m_nStatusCode = PLAY_ERROR;
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
}
}
else
{
// playing second in dummy -- see if we're ruffing here
if (m_nTargetHand == IN_DUMMY)
{
// ruff here
CSuitHoldings& dummyTrumps = dummyHand.GetSuit(nTrumpSuit);
if (dummyTrumps.GetNumCards() > 0)
{
// see if RHO trumped
if (bTrumped && (pPartnersCard != pRoundTopCard))
{
// see if we can beat it
pPlayCard = dummyTrumps.GetLowestCardAbove(pRoundTopCard);
if (pPlayCard)
{
status << "PLRUF70! Overruff RHO's trump " & pRoundTopCard->GetFaceName() &
" with the " & pPlayCard->GetFaceName() & ".\n";
}
else
{
status << "3PLRUF72! RHO ruffed, and we can't overruff.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
}
else if (pPartnersCard == pRoundTopCard)
{
status << "4PLRUF73! Partner'" & pPartnersCard->GetName() & " is high, so don't ruff it.\n";
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
else
{
// go ahead and ruff
pPlayCard = dummyTrumps.GetBottomCard();
status << "PLRUF74! Ruff in dummy with the " & pPlayCard->GetName() & ".\n";
}
}
else
{
status << "4PLRUF76! Error - no trumps left in dummy to use in a ruff.\n";
m_nStatusCode = PLAY_ERROR;
return m_nStatusCode;
}
}
else
{
// if we're playing 4th, we can discard (ruffed opposite)
if (nOrdinal == 3)
{
if (bPartnerHigh)
{
pPlayCard = playEngine.GetDiscard();
status << "PLRUF77! Complete the ruff by discarding the " & pPlayCard->GetName() & " from hand.\n";
}
else
{
// oops, opponents overruffed
status << "3PLRUF77a! Oops, the opponents overruffed, so skip the play.\n";
m_nStatusCode = PLAY_FAILED;
return m_nStatusCode;
}
}
else
{
// can't ruff here
// status << "4PLRUF78! Oops, we ended up in dummy opposite a ruff in hand.\n";
// m_nStatusCode = PLAY_ERROR;
m_nStatusCode = PLAY_POSTPONE;
return m_nStatusCode;
}
}
}
// else all went OK
m_nStatusCode = PLAY_COMPLETE;
break;
}
// done
ASSERT(pPlayCard->IsValid());
return m_nStatusCode;
}