/**
* Copyright (C) 2017 Jan Schäfer (jansch@users.sourceforge.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jskat.ai.nn.input;
import java.util.ArrayList;
import java.util.List;
import org.jskat.data.Trick;
import org.jskat.player.ImmutablePlayerKnowledge;
import org.jskat.util.Card;
import org.jskat.util.CardDeck;
import org.jskat.util.GameType;
import org.jskat.util.Player;
import org.jskat.util.Rank;
import org.jskat.util.Suit;
class DetailedNetworkInputGenerator implements NetworkInputGenerator {
final static int INPUT_LENGTH = 1089;
private final static int PLAYER_LENGTH = 363;
public static double HAS_CARD = 1.0d;
public static double COULD_HAVE_CARD = 0.5d;
public static double DOESNT_HAVE_CARD = 0.0d;
public static double PLAYED_CARD = -0.5d;
public static double PLAYED_CARD_IN_TRICK = -1.0d;
public static double ACTIVE = 1.0d;
public static double INACTIVE = 0.0d;
/**
* Creates the net input attributes
*
* @param cardToPlay
* Card to be played
* @return Net input attributes
*/
@Override
public double[] getNetInputs(ImmutablePlayerKnowledge knowledge, Card cardToPlay) {
double[] netInputs = new double[INPUT_LENGTH];
// set game declarer
setDeclarerInputs(knowledge, netInputs, PLAYER_LENGTH);
// set information for all played cards
final int TRICK_LENGTH = 33;
final int CARD_OFFSET = 1;
setTrickInputs(knowledge, netInputs, PLAYER_LENGTH, TRICK_LENGTH,
CARD_OFFSET);
// set information for all unplayed cards
Player leftOpponent = knowledge.getPlayerPosition().getLeftNeighbor();
Player rightOpponent = knowledge.getPlayerPosition().getRightNeighbor();
final int KNOWN_CARDS_OFFSET = 331;
for (Card card : new CardDeck()) {
setKnownCards(knowledge, netInputs, leftOpponent, rightOpponent,
card, PLAYER_LENGTH, KNOWN_CARDS_OFFSET);
}
// set information of card to be played
if (cardToPlay != null) {
int trickStartIndex = knowledge.getCurrentTrick()
.getTrickNumberInGame() * TRICK_LENGTH + 1;
setCardInputs(knowledge.getGameType(), netInputs, PLAYER_LENGTH,
knowledge.getPlayerPosition(), trickStartIndex,
CARD_OFFSET, knowledge.getPlayerPosition(), cardToPlay,
PLAYED_CARD_IN_TRICK);
}
return netInputs;
}
private static void setTrickInputs(ImmutablePlayerKnowledge knowledge,
double[] inputs, int playerLength, int trickLength, int cardOffset) {
List<Trick> trickList = new ArrayList<Trick>();
trickList.addAll(knowledge.getCompletedTricks());
trickList.add(knowledge.getCurrentTrick());
for (Trick trick : trickList) {
Player position = knowledge.getPlayerPosition();
Player trickForeHand = trick.getForeHand();
int trickStartIndex = trick.getTrickNumberInGame() * trickLength
+ 1;
int index = -1;
if (position.getLeftNeighbor() == trickForeHand) {
index = trickStartIndex;
} else if (position == trickForeHand) {
index = trickStartIndex + playerLength;
} else if (position.getRightNeighbor() == trickForeHand) {
index = trickStartIndex + 2 * playerLength;
}
inputs[index] = ACTIVE;
double activationValue = 0.0;
if (trick.getTrickNumberInGame() < trickList.size()) {
activationValue = PLAYED_CARD;
} else {
activationValue = PLAYED_CARD_IN_TRICK;
}
Player trickPlayer = trick.getForeHand();
for (Card card : trick.getCardList()) {
setCardInputs(knowledge.getGameType(), inputs, playerLength,
position, trickStartIndex, cardOffset, trickPlayer,
card, activationValue);
trickPlayer = trickPlayer.getLeftNeighbor();
}
}
}
private static void setCardInputs(GameType gameType, double[] inputs,
int playerLength, Player position, int trickStartIndex,
int cardOffset, Player trickPlayer, Card card,
double activationValue) {
int cardIndex = getNetInputIndex(gameType, card);
int index = -1;
if (position.getLeftNeighbor() == trickPlayer) {
index = cardIndex + trickStartIndex + cardOffset;
} else if (position == trickPlayer) {
index = cardIndex + trickStartIndex + cardOffset + playerLength;
} else if (position.getRightNeighbor() == trickPlayer) {
index = cardIndex + trickStartIndex + cardOffset + 2 * playerLength;
}
inputs[index] = activationValue;
}
private static void setDeclarerInputs(ImmutablePlayerKnowledge knowledge,
double[] inputs, int NEURON_OFFSET) {
if (!GameType.RAMSCH.equals(knowledge.getGameType())) {
// in Ramsch games there is no declarer
Player position = knowledge.getPlayerPosition();
Player declarer = knowledge.getDeclarer();
int index = -1;
if (position.getLeftNeighbor() == declarer) {
index = 0;
} else if (position == declarer) {
index = NEURON_OFFSET;
} else if (position.getRightNeighbor() == declarer) {
index = 2 * NEURON_OFFSET;
}
inputs[index] = ACTIVE;
}
}
private static void setKnownCards(ImmutablePlayerKnowledge knowledge,
double[] inputs, Player leftOpponent, Player rightOpponent,
Card card, int playerLength, int knownCardsOffset) {
GameType gameType = knowledge.getGameAnnouncement().getGameType();
int netInputIndexForCard = getNetInputIndex(gameType, card);
// inputs for left opponent
if (knowledge.couldHaveCard(leftOpponent, card)) {
if (knowledge.couldHaveCard(rightOpponent, card)) {
inputs[netInputIndexForCard + knownCardsOffset] = COULD_HAVE_CARD;
} else {
inputs[netInputIndexForCard + knownCardsOffset] = HAS_CARD;
}
}
// inputs for player
if (knowledge.getOwnCards().contains(card)) {
inputs[netInputIndexForCard + knownCardsOffset + playerLength] = HAS_CARD;
}
// inputs for right opponent
if (knowledge.couldHaveCard(rightOpponent, card)) {
if (knowledge.couldHaveCard(leftOpponent, card)) {
inputs[netInputIndexForCard + knownCardsOffset + 2
* playerLength] = COULD_HAVE_CARD;
} else {
inputs[netInputIndexForCard + knownCardsOffset + 2
* playerLength] = HAS_CARD;
}
}
}
/**
* Returns the index for a card according a game type
*
* @param gameType
* Game type
* @return Index of card for the given game type
*/
static int getNetInputIndex(final GameType gameType, final Card card) {
int result = 0;
// if (gameType == GameType.NULL) {
//
// result = getNetInputIndexNullGame(card);
// } else {
//
// result = getNetInputIndexSuitGrandRamschGame(gameType, card);
// }
result = getNetInputIndexNullGame(card);
return result;
}
private static int getNetInputIndexSuitGrandRamschGame(
final GameType gameType, final Card card) {
int result = -1;
if (card.getRank() == Rank.JACK) {
result = getNetInputIndexJack(card.getSuit());
} else {
if (gameType == GameType.GRAND) {
result = getNetInputIndexGrandGame(card);
} else if (gameType == GameType.RAMSCH) {
result = getNetInputIndexRamschGame(card);
} else {
// result = getNetInputIndexSuitGame(gameType, card);
result = getNetInputIndexGrandGame(card);
}
}
return result;
}
private static int getNetInputIndexJack(final Suit jackSuit) {
int result = -1;
switch (jackSuit) {
case CLUBS:
result = 0;
break;
case SPADES:
result = 1;
break;
case HEARTS:
result = 2;
break;
case DIAMONDS:
result = 3;
break;
}
return result;
}
private static int getNetInputIndexNullGame(final Card card) {
// TODO better order cards after frequency or points
// normal null ordering
return card.getSuit().getSuitOrder() * 8 + card.getNullOrder();
}
private static int getNetInputIndexGrandGame(final Card card) {
// TODO better order cards after frequency or points
// normal suit ordering after all jacks
return 4 + card.getSuit().getSuitOrder() * 7 + card.getSuitGrandOrder();
}
private static int getNetInputIndexRamschGame(final Card card) {
// TODO better order cards after frequency or points
// ramsch ordering after all jacks
return 4 + card.getSuit().getSuitOrder() * 7 + card.getRamschOrder();
}
private static int getNetInputIndexSuitGame(final GameType gameType,
final Card card) {
int result = -1;
Suit trump = gameType.getTrumpSuit();
if (card.getSuit() == trump) {
// trump cards after all jacks
result = 4 + card.getSuitGrandOrder();
} else {
// TODO better order cards after frequency or points
// normal suit ordering after all trump cards
if (card.getSuit().getSuitOrder() > trump.getSuitOrder()) {
result = 4 + 7 + (card.getSuit().getSuitOrder() - 1) * 7
+ card.getSuitGrandOrder();
} else {
result = 4 + 7 + card.getSuit().getSuitOrder() * 7
+ card.getSuitGrandOrder();
}
}
return result;
}
}