private void playCard(@NotNull SevensPlayer inputter, Card card, Card adjacentExtremeCard) {
if (adjacentExtremeCard.getRank() != SEVEN) {
extremeCards.remove(adjacentExtremeCard);
}
extremeCards.add(card);
playedCards.get(card.getSuit()).add(card);
inputter.playCard(card);
}
@Nullable
private Card getAdjacentExtremeCard(@NotNull Card card) {
if (card.getRank() == SEVEN) {
if (extremeCards.isEmpty()) {
// You can only start the game with the seven of diamonds.
return card == SEVEN_OF_DIAMONDS ? SEVEN_OF_DIAMONDS : null;
} else {
return card;
}
}
return extremeCards
.stream()
.filter(extreme -> isAdjacent(card, extreme))
.findAny()
.orElse(null);
}
private boolean isAdjacent(Card card, Card extreme) {
return card.getSuit() == extreme.getSuit()
&& (card.getRank().getValue() == extreme.getRank().getValue() - 1
|| card.getRank().getValue() == extreme.getRank().getValue() + 1);
}