@Override
public boolean isKeep(TridentTuple tuple) {
GameState gameState = (GameState) tuple.get(0);
boolean keep = (gameState.getBoard().isEndState());
if (keep) {
LOG.info("END GAME [" + gameState + "]");
}
return keep;
}
@Override
public void execute(TridentTuple tuple, TridentCollector collector) {
GameState gameState = (GameState) tuple.get(0);
Board currentBoard = gameState.getBoard();
List<Board> history = new ArrayList<Board>();
history.addAll(gameState.getHistory());
history.add(currentBoard);
if (!currentBoard.isEndState()) {
String nextPlayer = Player.next(gameState.getPlayer());
List<Board> boards = gameState.getBoard().nextBoards(nextPlayer);
Log.debug(
"Generated [" + boards.size() + "] children boards for [" + gameState.toString() + "]");
for (Board b : boards) {
GameState newGameState = new GameState(b, history, nextPlayer);
List<Object> values = new ArrayList<Object>();
values.add(newGameState);
collector.emit(values);
}
} else {
Log.debug("End game found! [" + currentBoard + "]");
}
}