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Moves.cpp
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/*
DDS, a bridge double dummy solver.
Copyright (C) 2006-2014 by Bo Haglund /
2014-2018 by Bo Haglund & Soren Hein.
See LICENSE and README.
*/
#include <iomanip>
#include <sstream>
#include "Moves.h"
#include "debug.h"
#ifdef DDS_MOVES
#define MG_REGISTER(a, b) lastCall[currTrick][b] = a
#else
#define MG_REGISTER(a, b) 1;
#endif
const MGtype RegisterList[16] =
{
MG_NT0, MG_TRUMP0,
MG_SIZE, MG_SIZE, // Unused
MG_NT_NOTVOID1, MG_TRUMP_NOTVOID1,
MG_NT_VOID1, MG_TRUMP_VOID1,
MG_NT_NOTVOID2, MG_TRUMP_NOTVOID2,
MG_NT_VOID2, MG_TRUMP_VOID2,
MG_COMB_NOTVOID3, MG_COMB_NOTVOID3,
MG_NT_VOID3, MG_TRUMP_VOID3
};
Moves::Moves()
{
funcName[MG_NT0] = "NT0";
funcName[MG_TRUMP0] = "Trump0";
funcName[MG_NT_VOID1] = "NT_Void1";
funcName[MG_TRUMP_VOID1] = "Trump_Void1";
funcName[MG_NT_NOTVOID1] = "NT_Notvoid1";
funcName[MG_TRUMP_NOTVOID1] = "Trump_Notvoid1";
funcName[MG_NT_VOID2] = "NT_Void2";
funcName[MG_TRUMP_VOID2] = "Trump_Void2";
funcName[MG_NT_NOTVOID2] = "NT_Notvoid2";
funcName[MG_TRUMP_NOTVOID2] = "Trump_Notvoid2";
funcName[MG_NT_VOID3] = "NT_Void3";
funcName[MG_TRUMP_VOID3] = "Trump_Void3";
funcName[MG_COMB_NOTVOID3] = "Comb_Notvoid3";
for (int t = 0; t < 13; t++)
{
for (int h = 0; h < DDS_HANDS; h++)
{
lastCall[t][h] = MG_SIZE;
trickTable[t][h].count = 0;
trickSuitTable[t][h].count = 0;
trickDetailTable [t][h].nfuncs = 0;
trickDetailSuitTable[t][h].nfuncs = 0;
for (int i = 0; i < MG_SIZE; i++)
{
trickDetailTable [t][h].list[i].count = 0;
trickDetailSuitTable[t][h].list[i].count = 0;
}
}
}
trickFuncTable.nfuncs = 0;
trickFuncSuitTable.nfuncs = 0;
for (int i = 0; i < MG_SIZE; i++)
{
trickFuncTable .list[i].count = 0;
trickFuncSuitTable.list[i].count = 0;
}
WeightList[ 4] = &Moves::WeightAllocNTNotvoid1;
WeightList[ 5] = &Moves::WeightAllocTrumpNotvoid1;
WeightList[ 6] = &Moves::WeightAllocNTVoid1;
WeightList[ 7] = &Moves::WeightAllocTrumpVoid1;
WeightList[ 8] = &Moves::WeightAllocNTNotvoid2;
WeightList[ 9] = &Moves::WeightAllocTrumpNotvoid2;
WeightList[10] = &Moves::WeightAllocNTVoid2;
WeightList[11] = &Moves::WeightAllocTrumpVoid2;
WeightList[12] = &Moves::WeightAllocCombinedNotvoid3;
WeightList[13] = &Moves::WeightAllocCombinedNotvoid3;
WeightList[14] = &Moves::WeightAllocNTVoid3;
WeightList[15] = &Moves::WeightAllocTrumpVoid3;
}
void Moves::Init(
const int tricks,
const int relStartHand,
const int initialRanks[],
const int initialSuits[],
const unsigned short rankInSuit[DDS_HANDS][DDS_SUITS],
const int ourTrump,
const int ourLeadHand)
{
currTrick = tricks;
trump = ourTrump;
if (relStartHand == 0)
track[tricks].leadHand = ourLeadHand;
for (int m = 0; m < 13; m++)
{
for (int h = 0; h < DDS_HANDS; h++)
{
moveList[m][h].current = 0;
moveList[m][h].last = 0;
}
}
// 0x1ffff would be enough, but this is for compatibility.
for (int s = 0; s < DDS_SUITS; s++)
track[tricks].removedRanks[s] = 0xffff;
for (int h = 0; h < DDS_HANDS; h++)
for (int s = 0; s < DDS_SUITS; s++)
track[tricks].removedRanks[s] ^= rankInSuit[h][s];
for (int n = 0; n < relStartHand; n++)
{
int s = initialSuits[n];
int r = initialRanks[n];
track[tricks].removedRanks[s] ^= bitMapRank[r];
}
}
void Moves::Reinit(
const int tricks,
const int ourLeadHand)
{
track[tricks].leadHand = ourLeadHand;
}
int Moves::MoveGen0(
const int tricks,
const pos& tpos,
const moveType& bestMove,
const moveType& bestMoveTT,
const relRanksType thrp_rel[])
{
trackp = &track[tricks];
leadHand = trackp->leadHand;
currHand = leadHand;
currTrick = tricks;
moveGroupType * mp;
int removed, g, rank, seq;
movePlyType& list = moveList[tricks][0];
mply = list.move;
for (int s = 0; s < DDS_SUITS; s++)
trackp->lowestWin[0][s] = 0;
numMoves = 0;
bool ftest = ((trump != DDS_NOTRUMP) &&
(tpos.winner[trump].rank != 0));
for (suit = 0; suit < DDS_SUITS; suit++)
{
unsigned short ris = tpos.rankInSuit[leadHand][suit];
if (ris == 0) continue;
lastNumMoves = numMoves;
mp = &groupData[ris];
g = mp->lastGroup;
removed = trackp->removedRanks[suit];
while (g >= 0)
{
rank = mp->rank[g];
seq = mp->sequence[g];
while (g >= 1 && ((mp->gap[g] & removed) == mp->gap[g]))
seq |= mp->fullseq[--g];
mply[numMoves].sequence = seq;
mply[numMoves].suit = suit;
mply[numMoves].rank = rank;
numMoves++;
g--;
}
if (ftest)
Moves::WeightAllocTrump0(tpos, bestMove, bestMoveTT, thrp_rel);
else
Moves::WeightAllocNT0(tpos, bestMove, bestMoveTT, thrp_rel);
}
#ifdef DDS_MOVES
if (ftest)
MG_REGISTER(MG_TRUMP0, 0);
else
MG_REGISTER(MG_NT0, 0);
#endif
list.current = 0;
list.last = numMoves - 1;
if (numMoves != 1)
Moves::MergeSort();
return numMoves;
}
int Moves::MoveGen123(
const int tricks,
const int handRel,
const pos& tpos)
{
trackp = &track[tricks];
leadHand = trackp->leadHand;
currHand = handId(leadHand, handRel);
currTrick = tricks;
leadSuit = track[tricks].leadSuit;
moveGroupType * mp;
int removed, g, rank, seq;
movePlyType& list = moveList[tricks][handRel];
mply = list.move;
for (int s = 0; s < DDS_SUITS; s++)
trackp->lowestWin[handRel][s] = 0;
numMoves = 0;
WeightPtr WeightFnc;
int findex;
int ftest = ((trump != DDS_NOTRUMP) &&
(tpos.winner[trump].rank != 0) ? 1 : 0);
unsigned short ris = tpos.rankInSuit[currHand][leadSuit];
if (ris != 0)
{
mp = &groupData[ris];
g = mp->lastGroup;
removed = trackp->removedRanks[leadSuit];
while (g >= 0)
{
rank = mp->rank[g];
seq = mp->sequence[g];
while (g >= 1 && ((mp->gap[g] & removed) == mp->gap[g]))
seq |= mp->fullseq[--g];
mply[numMoves].sequence = seq;
mply[numMoves].suit = leadSuit;
mply[numMoves].rank = rank;
numMoves++;
g--;
}
findex = 4 * handRel + ftest;
#ifdef DDS_MOVES
MG_REGISTER(RegisterList[findex], handRel);
#endif
list.current = 0;
list.last = numMoves - 1;
if (numMoves == 1)
return numMoves;
(this->*WeightList[findex])(tpos);
Moves::MergeSort();
return numMoves;
}
findex = 4 * handRel + ftest + 2;
#ifdef DDS_MOVES
MG_REGISTER(RegisterList[findex], handRel);
#endif
WeightFnc = WeightList[findex];
for (suit = 0; suit < DDS_SUITS; suit++)
{
ris = tpos.rankInSuit[currHand][suit];
if (ris == 0) continue;
lastNumMoves = numMoves;
mp = &groupData[ris];
g = mp->lastGroup;
removed = trackp->removedRanks[suit];
while (g >= 0)
{
rank = mp->rank[g];
seq = mp->sequence[g];
while (g >= 1 && ((mp->gap[g] & removed) == mp->gap[g]))
seq |= mp->fullseq[--g];
mply[numMoves].sequence = seq;
mply[numMoves].suit = suit;
mply[numMoves].rank = rank;
numMoves++;
g--;
}
(this->*WeightFnc)(tpos);
}
list.current = 0;
list.last = numMoves - 1;
if (numMoves != 1)
Moves::MergeSort();
return numMoves;
}
void Moves::WeightAllocTrump0(
const pos& tpos,
const moveType& bestMove,
const moveType& bestMoveTT,
const relRanksType thrp_rel[])
{
const unsigned short suitCount = tpos.length[leadHand][suit];
const unsigned short suitCountLH = tpos.length[lho[leadHand]][suit];
const unsigned short suitCountRH = tpos.length[rho[leadHand]][suit];
const unsigned short aggr = tpos.aggr[suit];
// Why?
int countLH = (suitCountLH == 0 ? currTrick + 1 : suitCountLH) << 2;
int countRH = (suitCountRH == 0 ? currTrick + 1 : suitCountRH) << 2;
int suitWeightD = - (((countLH + countRH) << 5) / 13);
for (int k = lastNumMoves; k < numMoves; k++)
{
int suitBonus = 0;
bool winMove = false;
int rRank = relRank[aggr][mply[k].rank];
/* Discourage suit if LHO or RHO can ruff. */
if ((suit != trump) &&
(((tpos.rankInSuit[lho[leadHand]][suit] == 0) &&
(tpos.rankInSuit[lho[leadHand]][trump] != 0)) ||
((tpos.rankInSuit[rho[leadHand]][suit] == 0) &&
(tpos.rankInSuit[rho[leadHand]][trump] != 0))))
suitBonus = -12;
/* Encourage suit if partner can ruff. */
if ((suit != trump) &&
(tpos.length[partner[leadHand]][suit] == 0) &&
(tpos.length[partner[leadHand]][trump] > 0) &&
(suitCountRH > 0))
suitBonus += 17;
/* Discourage suit if RHO has high card. */
if ((tpos.winner[suit].hand == rho[leadHand]) ||
(tpos.secondBest[suit].hand == rho[leadHand]))
{
if (suitCountRH != 1)
suitBonus += -12;
}
/* Try suit if LHO has winning card and partner second best.
Exception: partner has singleton. */
else if ((tpos.winner[suit].hand == lho[leadHand]) &&
(tpos.secondBest[suit].hand == partner[leadHand]))
{
/* This case was suggested by Joël Bradmetz. */
if (tpos.length[partner[leadHand]][suit] != 1)
suitBonus += 27;
}
/* Encourage play of suit where partner wins and
returns the suit for a ruff. */
if ((suit != trump) && (suitCount == 1) &&
(tpos.length[leadHand][trump] > 0) &&
(tpos.length[partner[leadHand]][suit] > 1) &&
(tpos.winner[suit].hand == partner[leadHand]))
suitBonus += 19;
/* Discourage a suit selection where the search tree appears larger
than for the altenative suits: the search is estimated to be
small when the added number of alternative cards to play for
the opponents is small. */
int suitWeightDelta = suitBonus + suitWeightD;
if (tpos.winner[suit].rank == mply[k].rank)
{
if ((suit != trump))
{
if ((tpos.length[partner[leadHand]][suit] != 0) ||
(tpos.length[partner[leadHand]][trump] == 0))
{
if (((tpos.length[lho[leadHand]][suit] != 0) ||
(tpos.length[lho[leadHand]][trump] == 0)) &&
((tpos.length[rho[leadHand]][suit] != 0) ||
(tpos.length[rho[leadHand]][trump] == 0)))
winMove = true;
}
else if (((tpos.length[lho[leadHand]][suit] != 0) ||
(tpos.rankInSuit[partner[leadHand]][trump] >
tpos.rankInSuit[lho[leadHand]][trump])) &&
((tpos.length[rho[leadHand]][suit] != 0) ||
(tpos.rankInSuit[partner[leadHand]][trump] >
tpos.rankInSuit[rho[leadHand]][trump])))
winMove = true;
}
else
winMove = true;
}
else if (tpos.rankInSuit[partner[leadHand]][suit] >
(tpos.rankInSuit[lho[leadHand]][suit] |
tpos.rankInSuit[rho[leadHand]][suit]))
{
if (suit != trump)
{
if (((tpos.length[lho[leadHand]][suit] != 0) ||
(tpos.length[lho[leadHand]][trump] == 0)) &&
((tpos.length[rho[leadHand]][suit] != 0) ||
(tpos.length[rho[leadHand]][trump] == 0)))
winMove = true;
}
else
winMove = true;
}
else if (suit != trump)
{
if ((tpos.length[partner[leadHand]][suit] == 0) &&
(tpos.length[partner[leadHand]][trump] != 0))
{
if ((tpos.length[lho[leadHand]][suit] == 0) &&
(tpos.length[lho[leadHand]][trump] != 0) &&
(tpos.length[rho[leadHand]][suit] == 0) &&
(tpos.length[rho[leadHand]][trump] != 0))
{
if (tpos.rankInSuit[partner[leadHand]][trump] >
(tpos.rankInSuit[lho[leadHand]][trump] |
tpos.rankInSuit[rho[leadHand]][trump]))
winMove = true;
}
else if ((tpos.length[lho[leadHand]][suit] == 0) &&
(tpos.length[lho[leadHand]][trump] != 0))
{
if (tpos.rankInSuit[partner[leadHand]][trump]
> tpos.rankInSuit[lho[leadHand]][trump])
winMove = true;
}
else if ((tpos.length[rho[leadHand]][suit] == 0) &&
(tpos.length[rho[leadHand]][trump] != 0))
{
if (tpos.rankInSuit[partner[leadHand]][trump]
> tpos.rankInSuit[rho[leadHand]][trump])
winMove = true;
}
else
winMove = true;
}
}
if (winMove)
{
/* Encourage ruffing LHO or RHO singleton, highest card. */
if (((suitCountLH == 1) &&
(tpos.winner[suit].hand == lho[leadHand]))
|| ((suitCountRH == 1) &&
(tpos.winner[suit].hand == rho[leadHand])))
mply[k].weight = suitWeightDelta + 35 + rRank;
/* Lead hand has the highest card. */
else if (tpos.winner[suit].hand == leadHand)
{
/* Also, partner has second highest card. */
if (tpos.secondBest[suit].hand == partner[leadHand])
mply[k].weight = suitWeightDelta + 48 + rRank;
else if (tpos.winner[suit].rank == mply[k].rank)
/* If the current card to play is the highest card. */
mply[k].weight = suitWeightDelta + 31;
else
mply[k].weight = suitWeightDelta - 3 + rRank;
}
else if (tpos.winner[suit].hand == partner[leadHand])
{
/* If partner has highest card */
if (tpos.secondBest[suit].hand == leadHand)
mply[k].weight = suitWeightDelta + 42 + rRank;
else
mply[k].weight = suitWeightDelta + 28 + rRank;
}
/* Encourage playing second highest rank if hand also has
third highest rank. */
else if ((mply[k].sequence) &&
(mply[k].rank == tpos.secondBest[suit].rank))
mply[k].weight = suitWeightDelta + 40;
else if (mply[k].sequence)
mply[k].weight = suitWeightDelta + 22 + rRank;
else
mply[k].weight = suitWeightDelta + 11 + rRank;
/* playing cards that previously caused search cutoff
or was stored as the best move in a transposition table entry
match. */
if ((bestMove.suit == suit) &&
(bestMove.rank == mply[k].rank))
mply[k].weight += 55;
else if ((bestMoveTT.suit == suit) &&
(bestMoveTT.rank == mply[k].rank))
mply[k].weight += 18;
}
else
{
/* Encourage playing the suit if the hand together with partner
have both the 2nd highest and the 3rd highest cards such that
the side of the hand has the highest card in the next round
playing this suit. */
int thirdBestHand = thrp_rel[aggr].absRank[3][suit].hand;
if ((tpos.secondBest[suit].hand == partner[leadHand]) &&
(partner[leadHand] == thirdBestHand))
suitWeightDelta += 20;
else if (((tpos.secondBest[suit].hand == leadHand) &&
(partner[leadHand] == thirdBestHand) &&
(tpos.length[partner[leadHand]][suit] > 1)) ||
((tpos.secondBest[suit].hand == partner[leadHand]) &&
(leadHand == thirdBestHand) &&
(tpos.length[partner[leadHand]][suit] > 1)))
suitWeightDelta += 13;
/* Higher weight if LHO or RHO has the highest (winning) card as
a singleton. */
if (((suitCountLH == 1) &&
(tpos.winner[suit].hand == lho[leadHand]))
|| ((suitCountRH == 1) &&
(tpos.winner[suit].hand == rho[leadHand])))
mply[k].weight = suitWeightDelta + rRank + 2;
else if (tpos.winner[suit].hand == leadHand)
{
if (tpos.secondBest[suit].hand == partner[leadHand])
/* Opponents win by ruffing */
mply[k].weight = suitWeightDelta + 33 + rRank;
else if (tpos.winner[suit].rank == mply[k].rank)
/* Opponents win by ruffing */
mply[k].weight = suitWeightDelta + 38;
else
mply[k].weight = suitWeightDelta - 14 + rRank;
}
else if (tpos.winner[suit].hand == partner[leadHand])
{
/* Opponents win by ruffing */
mply[k].weight = suitWeightDelta + 34 + rRank;
}
/* Encourage playing second highest rank if hand also has
third highest rank. */
else if ((mply[k].sequence) &&
(mply[k].rank == tpos.secondBest[suit].rank))
mply[k].weight = suitWeightDelta + 35;
else
mply[k].weight = suitWeightDelta + 17 - (mply[k].rank);
/* Encourage playing cards that previously caused search cutoff
or was stored as the best move in a transposition table
entry match. */
if ((bestMove.suit == suit) &&
(bestMove.rank == mply[k].rank))
mply[k].weight += 18;
}
}
}
void Moves::WeightAllocNT0(
const pos& tpos,
const moveType& bestMove,
const moveType& bestMoveTT,
const relRanksType thrp_rel[])
{
int aggr = tpos.aggr[suit];
/* Discourage a suit selection where the search tree appears larger
than for the alternative suits: the search is estimated to be
small when the added number of alternative cards to play for
the opponents is small. */
unsigned short suitCountLH = tpos.length[lho[leadHand]][suit];
unsigned short suitCountRH = tpos.length[rho[leadHand]][suit];
// Why?
int countLH = (suitCountLH == 0 ? currTrick + 1 : suitCountLH) << 2;
int countRH = (suitCountRH == 0 ? currTrick + 1 : suitCountRH) << 2;
int suitWeightD = - (((countLH + countRH) << 5) / 19);
if (tpos.length[partner[leadHand]][suit] == 0)
suitWeightD += -9;
for (int k = lastNumMoves; k < numMoves; k++)
{
int suitWeightDelta = suitWeightD;
int rRank = relRank[aggr][mply[k].rank];
if (tpos.winner[suit].rank == mply[k].rank ||
(tpos.rankInSuit[partner[leadHand]][suit] >
(tpos.rankInSuit[lho[leadHand]][suit] |
tpos.rankInSuit[rho[leadHand]][suit])))
{
// Can win trick, ourselves or partner.
// FIX: No distinction?
/* Discourage suit if RHO has second best card.
Exception: RHO has singleton. */
if (tpos.secondBest[suit].hand == rho[leadHand])
{
if (suitCountRH != 1)
suitWeightDelta += -1;
}
/* Encourage playing suit if LHO has second highest rank. */
else if (tpos.secondBest[suit].hand == lho[leadHand])
{
if (suitCountLH != 1)
suitWeightDelta += 22;
else
suitWeightDelta += 16;
}
/* Higher weight if also second best rank is present on
current side to play, or if second best is a singleton
at LHO or RHO. */
if (((tpos.secondBest[suit].hand != lho[leadHand])
|| (suitCountLH == 1)) &&
((tpos.secondBest[suit].hand != rho[leadHand])
|| (suitCountRH == 1)))
mply[k].weight = suitWeightDelta + 45 + rRank;
else
mply[k].weight = suitWeightDelta + 18 + rRank;
/* Encourage playing cards that previously caused search cutoff
or was stored as the best move in a transposition table
entry match. */
if ((bestMove.suit == suit) &&
(bestMove.rank == mply[k].rank))
mply[k].weight += 126;
else if ((bestMoveTT.suit == suit) &&
(bestMoveTT.rank == mply[k].rank))
mply[k].weight += 32;
}
else
{
/* Discourage suit if RHO has winning or second best card.
Exception: RHO has singleton. */
if ((tpos.winner[suit].hand == rho[leadHand]) ||
(tpos.secondBest[suit].hand == rho[leadHand]))
{
if (suitCountRH != 1)
suitWeightDelta += -10;
}
/* Try suit if LHO has winning card and partner second best.
Exception: partner has singleton. */
else if ((tpos.winner[suit].hand == lho[leadHand]) &&
(tpos.secondBest[suit].hand == partner[leadHand]))
{
/* This case was suggested by Joël Bradmetz. */
if (tpos.length[partner[leadHand]][suit] != 1)
suitWeightDelta += 31;
}
/* Encourage playing the suit if the hand together with partner
have both the 2nd highest and the 3rd highest cards such
that the side of the hand has the highest card in the
next round playing this suit. */
int thirdBestHand = thrp_rel[aggr].absRank[3][suit].hand;
if ((tpos.secondBest[suit].hand == partner[leadHand]) &&
(partner[leadHand] == thirdBestHand))
suitWeightDelta += 35;
else if (((tpos.secondBest[suit].hand == leadHand) &&
(partner[leadHand] == thirdBestHand) &&
(tpos.length[partner[leadHand]][suit] > 1)) ||
((tpos.secondBest[suit].hand == partner[leadHand]) &&
(leadHand == thirdBestHand) &&
(tpos.length[partner[leadHand]][suit] > 1)))
suitWeightDelta += 25;
/* Higher weight if LHO or RHO has the highest (winning) card
as a singleton. */
if (((suitCountLH == 1) &&
(tpos.winner[suit].hand == lho[leadHand]))
|| ((suitCountRH == 1) &&
(tpos.winner[suit].hand == rho[leadHand])))
mply[k].weight = suitWeightDelta + 28 + rRank;
else if (tpos.winner[suit].hand == leadHand)
mply[k].weight = suitWeightDelta - 17 + rRank;
else if (! mply[k].sequence)
mply[k].weight = suitWeightDelta + 12 + rRank;
else if (mply[k].rank == tpos.secondBest[suit].rank)
mply[k].weight = suitWeightDelta + 48;
else
mply[k].weight = suitWeightDelta + 29 - rRank;
/* Encourage playing cards that previously caused search cutoff
or was stored as the best move in a transposition table
entry match. */
if ((bestMove.suit == suit) && (bestMove.rank == mply[k].rank))
mply[k].weight += 47;
else if ((bestMoveTT.suit == suit) &&
(bestMoveTT.rank == mply[k].rank))
mply[k].weight += 19;
}
}
}
void Moves::WeightAllocTrumpNotvoid1(const pos& tpos)
{
const int max3rd = highestRank[
tpos.rankInSuit[partner[leadHand]][leadSuit]];
const int maxpd = highestRank[
tpos.rankInSuit[rho[leadHand] ][leadSuit]];
const int min3rd = lowestRank [
tpos.rankInSuit[partner[leadHand]][leadSuit]];
const int minpd = lowestRank [
tpos.rankInSuit[rho[leadHand] ][leadSuit]];
for (int k = 0; k < numMoves; k++)
{
bool winMove = false; /* If true, current move can win trick. */
int rRank = relRank[ tpos.aggr[leadSuit] ][mply[k].rank];
if (leadSuit == trump)
{
if (maxpd > trackp->move[0].rank && maxpd > max3rd)
winMove = true;
else if (mply[k].rank > trackp->move[0].rank &&
mply[k].rank > max3rd)
winMove = true;
}
else
{
if (mply[k].rank > trackp->move[0].rank && mply[k].rank > max3rd)
{
if ((max3rd != 0) ||
(tpos.length[partner[leadHand]][trump] == 0))
winMove = true;
else if ((maxpd == 0)
&& (tpos.length[rho[leadHand]][trump] != 0)
&& (tpos.rankInSuit[rho[leadHand]][trump] >
tpos.rankInSuit[partner[leadHand]][trump]))
winMove = true;
}
else if (maxpd > trackp->move[0].rank && maxpd > max3rd)
{
if ((max3rd != 0) ||
(tpos.length[partner[leadHand]][trump] == 0))
winMove = true;
}
else if (trackp->move[0].rank > maxpd &&
trackp->move[0].rank > max3rd &&
trackp->move[0].rank > mply[k].rank)
{
if ((maxpd == 0) && (tpos.length[rho[leadHand]][trump] != 0))
{
if ((max3rd != 0) ||
(tpos.length[partner[leadHand]][trump] == 0))
winMove = true;
else if (tpos.rankInSuit[rho[leadHand]][trump]
> tpos.rankInSuit[partner[leadHand]][trump])
winMove = true;
}
}
else if (maxpd == 0 && tpos.length[rho[leadHand]][trump] != 0)
/* winnerHand is partner to first */
winMove = true;
}
if (winMove)
{
if (min3rd > mply[k].rank)
// Partner must be winning -- we can't.
mply[k].weight = 40 + rRank;
else if ((maxpd > trackp->move[0].rank) &&
(tpos.rankInSuit[leadHand][leadSuit] >
tpos.rankInSuit[rho[leadHand]][leadSuit]))
mply[k].weight = 41 + rRank;
/* If rho has a card in the leading suit that
is higher than the trick leading card but lower
than the highest rank of the leading hand, then
lho playing the lowest card will be the cheapest win */
// FIX: Don't follow
else if (mply[k].rank > trackp->move[0].rank)
{
if (mply[k].rank < maxpd)
mply[k].weight = 78 - (mply[k].rank);
/* If played card is lower than any of the cards of
rho, it will be the cheapest win */
else if (mply[k].rank > max3rd)
mply[k].weight = 73 - (mply[k].rank);
/* If played card is higher than any cards at partner
of the leading hand, rho can play low, under the
condition that he has a lower card than lho played */
else if (mply[k].sequence) // May establish a winner
mply[k].weight = 62 - (mply[k].rank);
else
mply[k].weight = 49 - (mply[k].rank);
}
else if (maxpd > 0)
mply[k].weight = 47 - (mply[k].rank);
else
mply[k].weight = 40 - (mply[k].rank);
}
else if (mply[k].rank < min3rd || mply[k].rank < minpd)
// Will be beaten anyway.
mply[k].weight = -9 + rRank;
else if (mply[k].rank < trackp->move[0].rank)
// Already beaten.
mply[k].weight = -16 + rRank;
else if (mply[k].sequence)
// May establish a winner
mply[k].weight = 22 - (mply[k].rank);
else
mply[k].weight = 10 - (mply[k].rank);
}
}
void Moves::WeightAllocNTNotvoid1(const pos& tpos)
{
// FIX: Second test should come first, and outside loop.
// Why is better not to be able to beat later players than
// not to be able to beat the lead?
// Why rRank?
const int max3rd = highestRank[
tpos.rankInSuit[partner[leadHand]][leadSuit]];
const int maxpd = highestRank[
tpos.rankInSuit[rho[leadHand]][leadSuit] ];
if (maxpd > trackp->move[0].rank && maxpd > max3rd)
{
// Partner can beat both opponents.
for (int k = 0; k < numMoves; k++)
mply[k].weight = -mply[k].rank;
}
else
{
int min3rd = lowestRank [
tpos.rankInSuit[partner[leadHand]][leadSuit]];
int minpd = lowestRank [
tpos.rankInSuit[rho[leadHand]][leadSuit] ];
for (int k = 0; k < numMoves; k++)
{
int rRank = relRank[ tpos.aggr[leadSuit] ][mply[k].rank];
if (mply[k].rank > trackp->move[0].rank && mply[k].rank > max3rd)
// We can beat both opponents.
mply[k].weight = 81 - mply[k].rank;
else if ((min3rd > mply[k].rank) || (minpd > mply[k].rank))
// Card can make no difference, so play very low.
mply[k].weight = -3 + rRank;
else if (mply[k].rank < trackp->move[0].rank)
// Can't beat the card led.
mply[k].weight = -11 + rRank;
else if (mply[k].sequence)
// Some willingness to split.
mply[k].weight = 10 + rRank;
else
mply[k].weight = 13 - mply[k].rank;
}
}
}
void Moves::WeightAllocTrumpVoid1(const pos& tpos)
{
// FIX:
// leadSuit == trump: Why differentiate?
// suit != trump: Same question.
// Don't ruff ahead of partner?
const unsigned short suitCount = tpos.length[currHand][suit];
int suitAdd;
if (leadSuit == trump) // We pitch
{
if (tpos.rankInSuit[rho[leadHand]][leadSuit] >
(tpos.rankInSuit[partner[leadHand]][leadSuit] |
bitMapRank[ trackp->move[0].rank ]))
// Partner can win.
suitAdd = (suitCount << 6) / 44;
else
{
// Don't pitch from Kx.
suitAdd = (suitCount << 6) / 36;
if ((suitCount == 2) &&
(tpos.secondBest[suit].hand == currHand))
suitAdd += -4;
}
for (int k = lastNumMoves; k < numMoves; k++)
mply[k].weight = -mply[k].rank + suitAdd;
}
else if (suit != trump)
{
// We discard on a side suit.
if (tpos.length[partner[leadHand]][leadSuit] != 0)
{
// 3rd hand will follow.
if (tpos.rankInSuit[rho[leadHand]][leadSuit] >
(tpos.rankInSuit[partner[leadHand]][leadSuit] |
bitMapRank[ trackp->move[0].rank ]))
// Partner has winning card.
suitAdd = 60 + (suitCount << 6) / 44;
else if ((tpos.length[rho[leadHand]][leadSuit] == 0)
&& (tpos.length[rho[leadHand]][trump] != 0))
// Partner can ruff.
suitAdd = 60 + (suitCount << 6) / 44;
else
{
// FIX: No reason to differentiate here?
suitAdd = -2 + (suitCount << 6) / 36;
// Don't pitch from Kx.
if ((suitCount == 2) &&
(tpos.secondBest[suit].hand == currHand))
suitAdd += -4;
}
}
else if ((tpos.length[rho[leadHand]][leadSuit] == 0)
&& (tpos.rankInSuit[rho[leadHand]][trump] >
tpos.rankInSuit[partner[leadHand]][trump]))
// Partner can overruff 3rd hand.
suitAdd = 60 + (suitCount << 6) / 44;
else if ((tpos.length[partner[leadHand]][trump] == 0)
&& (tpos.rankInSuit[rho[leadHand]][leadSuit] >
bitMapRank[ trackp->move[0].rank] ))
// 3rd hand has no trumps, and partner has suit winner.
suitAdd = 60 + (suitCount << 6) / 44;
else
{
// FIX: No reason to differentiate here?
suitAdd = -2 + (suitCount << 6) / 36;
// Don't pitch from Kx.
if ((suitCount == 2) &&
(tpos.secondBest[suit].hand == currHand))
suitAdd += -4;
}
for (int k = lastNumMoves; k < numMoves; k++)
mply[k].weight = -mply[k].rank + suitAdd;
}
else if (tpos.length[partner[leadHand]][leadSuit] != 0)
{
// 3rd hand follows suit while we ruff.
// Could be ruffing partner's winner!
suitAdd = (suitCount << 6) / 44;
for (int k = lastNumMoves; k < numMoves; k++)
mply[k].weight = 24 - (mply[k].rank) + suitAdd;
}
else if ((tpos.length[rho[leadHand]][leadSuit] == 0)
&& (tpos.length[rho[leadHand]][trump] != 0) &&
(tpos.rankInSuit[rho[leadHand]][trump] >
tpos.rankInSuit[partner[leadHand]][trump]))
{
// Everybody is void, and partner can overruff.
suitAdd = (suitCount << 6) / 44;
for (int k = lastNumMoves; k < numMoves; k++)