public McRunnable(Player player, CopiableStructure stuff) {
LgrfTable table = null;
try {
table = stuff.get(LgrfTable.class);
} catch (final IllegalArgumentException e) {
// If we get here, we're not using LGRF
}
final CopiableStructure copy = stuff.copy();
board = copy.get(Board.class);
coords = board.getCoordinateSystem();
suggesters = copy.get(Suggester[].class);
weights = copy.get(int[].class);
this.player = player;
random = new MersenneTwisterFast();
mover = copy.get(Mover.class);
if (table != null) {
final LgrfSuggester lgrf = copy.get(LgrfSuggester.class);
lgrf.setTable(table);
}
scorer = copy.get(ChinesePlayoutScorer.class);
mercyObserver = copy.get(StoneCountObserver.class);
historyObserver = copy.get(HistoryObserver.class);
filter = copy.get(Predicate.class);
fancyHashes = new long[coords.getMaxMovesPerGame() + 1];
playedPoints = new ShortSet(coords.getFirstPointBeyondBoard());
}
/**
* Plays moves to the end of the game and returns the winner: BLACK, WHITE, or (in rare event of a
* tie or a playout canceled because it hits the maximum number of moves) VACANT.
*
* @param mercy True if we should abandon the playout when one color has many more stones than the
* other.
*/
public Color playout(boolean mercy) {
do {
if (board.getTurn() >= coords.getMaxMovesPerGame()) {
// Playout ran out of moves, probably due to superko
return VACANT;
}
if (board.getPasses() < 2) {
selectAndPlayOneMove();
}
if (board.getPasses() >= 2) {
// Game ended
return scorer.winner();
}
final Color mercyWinner = mercyObserver.mercyWinner();
if (mercy && mercyWinner != null) {
// One player has far more stones on the board
return mercyWinner;
}
} while (true);
}
