// Card filter: GUARD, when played against anyone but me.
public void GuardFilter(int TargetSittingOrder, int GuessedValue)
{
Debug.Assert(TargetSittingOrder != MySittingOrder);
Debug.Assert(GuessedValue >= CardController.VALUE_PRIEST && GuessedValue <= CardController.VALUE_PRINCESS);
int CardIndex = GuessedValue - 1;
int HiddenHandIndex = GetHiddenHandIndex(TargetSittingOrder);
// Update and renormalize the appropriate matrix
if (CurrentOpponentCount == 3)
{
// In case of THREE remaining opponents, update the ThreeOpponentsHandsDistribution
ThreeOpponentsHandsDistribution.ClearSlice(HiddenHandIndex, CardIndex);
ThreeOpponentsHandsDistribution.Renormalize();
}
else if (CurrentOpponentCount == 2)
{
// In case of TWO remaining opponents, update the TwoOpponentsHandsDistribution
TwoOpponentsHandsDistribution.ClearSlice(HiddenHandIndex, CardIndex);
TwoOpponentsHandsDistribution.Renormalize();
}
else if (CurrentOpponentCount == 1)
{
// In case of ONE remaining opponents, update the SingleOpponentHandDistribution
SingleOpponentHandDistribution[CardIndex] = 0;
SingleOpponentHandDistribution.Renormalize();
}
}
// On a knock-out, reduce the dimension of the joint distribution array and renormalize it
public void KnockOutFilter(int SittingOrder, int DiscardedValue)
{
Debug.Assert(SittingOrder != MySittingOrder);
Debug.Assert(DiscardedValue >= CardController.VALUE_GUARD && DiscardedValue <= CardController.VALUE_PRINCESS);
int CardIndex = DiscardedValue - 1;
int HiddenHandIndex = GetHiddenHandIndex(SittingOrder);
// Account for the discared card
AccountForCard(DiscardedValue);
// Merge down the current matrix to one dimension lower, taking the slice that corresponds to the knocked-out player's actual hand
if (CurrentOpponentCount == 3)
{
TwoOpponentsHandsDistribution = ThreeOpponentsHandsDistribution.GetSlice(HiddenHandIndex, CardIndex);
TwoOpponentsHandsDistribution.Renormalize();
// Also, we move out the knocked-out player's sitting order to the last place of the HiddenHands array
AIUtil.ShiftToLast(ref HiddenHands, HiddenHandIndex);
}
else if (CurrentOpponentCount == 2)
{
SingleOpponentHandDistribution = TwoOpponentsHandsDistribution.GetSlice(HiddenHandIndex, CardIndex);
SingleOpponentHandDistribution.Renormalize();
AIUtil.ShiftToLast(ref HiddenHands, HiddenHandIndex);
}
// Update player situation
CurrentOpponentCount -= 1;
PlayerIsKnockedOut[SittingOrder] = true;
}
// During the basic opponent turn update, we need to update the joint probability distribution
// using just the information about which card he has just played
protected void FilterHiddenHand(MoveData TurnData)
{
Debug.Assert(TurnData.Player.SittingOrder != MySittingOrder);
Debug.Assert(!PlayerIsKnockedOut[TurnData.Player.SittingOrder]);
Debug.Assert(TurnData.Card.Value >= CardController.VALUE_GUARD && TurnData.Card.Value <= CardController.VALUE_PRINCESS);
// Update the hand distribution matrices
if (CurrentOpponentCount == 3)
{
// Prepare a temporary array
tempArray3D.Clear();
// Loop through all possible world states and update the tempoprary array accordingly
for (int h0 = 0; h0 < CARD_VECTOR_LENGTH; h0++)
{
for (int h1 = 0; h1 < CARD_VECTOR_LENGTH; h1++)
{
for (int h2 = 0; h2 < CARD_VECTOR_LENGTH; h2++)
{
UpdatePartialHandDistribution(TurnData, h0, h1, h2, ref tempArray3D);
}
}
}
// Renormalize the temporary array and write it back to the three-player distribution
tempArray3D.Renormalize();
ThreeOpponentsHandsDistribution.CopyFrom(tempArray3D);
}
else if (CurrentOpponentCount == 2)
{
// Prepare a temporary array
tempArray2D.Clear();
// Loop through all possible world states and update the tempoprary array accordingly
for (int h0 = 0; h0 < CARD_VECTOR_LENGTH; h0++)
{
for (int h1 = 0; h1 < CARD_VECTOR_LENGTH; h1++)
{
UpdatePartialHandDistribution(TurnData, h0, h1, ref tempArray2D);
}
}
// Renormalize the temporary array and write it back to the two-player distribution
tempArray2D.Renormalize();
TwoOpponentsHandsDistribution.CopyFrom(tempArray2D);
}
else if (CurrentOpponentCount == 1)
{
// Prepare a temporary array
tempArray1D.Clear();
// Loop through all possible world states and update the tempoprary array accordingly
for (int h0 = 0; h0 < CARD_VECTOR_LENGTH; h0++)
{
UpdatePartialHandDistribution(TurnData.Card.Value - 1, h0, ref tempArray1D);
}
// Renormalize the temporary array and write it back to the one-payer distribution
tempArray1D.Renormalize();
SingleOpponentHandDistribution.CopyFrom(tempArray1D);
}
// Finally, recalculate utility arrays
RecalculateHandAndDeckdistributions();
}
// The joint probabilities array is good for analysis, but slow for quick access,
// so we instead populate smaller, 1D arrays for each hand, as well as for the deck.
public void RecalculateHandAndDeckdistributions()
{
// The computation only works if there ARE any opponents left
if (CurrentOpponentCount < 1)
{
return;
}
// Precomputation for the aggregated hand distributions update
for (int h = 0; h < HiddenHands.Length; h++)
{
HandDistribution[HiddenHands[h]].Clear();
}
DeckDistribution.Clear();
// Precomputations for the deck distribution update
Array.Copy(CountUnaccountedForCards, 1, virtualRemainingCards, 0, CARD_VECTOR_LENGTH);
// Loop through the first hidden hand
for (int h1 = 0; h1 < CARD_VECTOR_LENGTH; h1++)
{
virtualRemainingCards[h1] -= 1;
// If there is only one opponent left, update SingleOpponentHandDistribution
if (CurrentOpponentCount < 2)
{
HandDistribution[HiddenHands[0]][h1] = SingleOpponentHandDistribution[h1];
CumulativeUpdateDeckDistribution(SingleOpponentHandDistribution[h1], virtualRemainingCards, ref DeckDistribution);
}
else
{
// Otherwise, enter the second loop
for (int h2 = 0; h2 < CARD_VECTOR_LENGTH; h2++)
{
virtualRemainingCards[h2] -= 1;
// If there are two opponents left, update TwoOpponentsHandsDistribution
if (CurrentOpponentCount < 3)
{
HandDistribution[HiddenHands[0]][h1] += TwoOpponentsHandsDistribution[h1, h2];
HandDistribution[HiddenHands[1]][h2] += TwoOpponentsHandsDistribution[h1, h2];
CumulativeUpdateDeckDistribution(TwoOpponentsHandsDistribution[h1, h2], virtualRemainingCards, ref DeckDistribution);
}
else
{
// Otherwise, enter the final loop
for (int h3 = 0; h3 < CARD_VECTOR_LENGTH; h3++)
{
HandDistribution[HiddenHands[0]][h1] += ThreeOpponentsHandsDistribution[h1, h2, h3];
HandDistribution[HiddenHands[1]][h2] += ThreeOpponentsHandsDistribution[h1, h2, h3];
HandDistribution[HiddenHands[2]][h3] += ThreeOpponentsHandsDistribution[h1, h2, h3];
// And update ThreeOpponentsHandsDistribution
virtualRemainingCards[h3] -= 1;
CumulativeUpdateDeckDistribution(ThreeOpponentsHandsDistribution[h1, h2, h3], virtualRemainingCards, ref DeckDistribution);
virtualRemainingCards[h3] += 1;
}
}
virtualRemainingCards[h2] += 1;
}
}
virtualRemainingCards[h1] += 1;
}
// Normalize distributions
if (TheDeck.CountCardsLeft > 0)
{
DeckDistribution.Renormalize();
}
for (int h = 0; h < CurrentOpponentCount; h++)
{
HandDistribution[HiddenHands[h]].Renormalize();
}
}
