@Override
public Piece givePiece(Board board, Piece[] pieces) {
List<Piece> nonWinning = new ArrayList<>(Arrays.asList(pieces));
Streak[] streaks = board.findStreaks();
for (Streak streak : streaks) {
if (streak.getLength() == 3) {
Piece streakPiece = new Piece(streak.getType());
// Remove matching from nonWinning list
LinkedList<Piece> winning = new LinkedList<>();
for (Piece p : nonWinning) {
if (Piece.getSimilarities(p, streakPiece) != 0) {
winning.add(p);
}
}
nonWinning.removeAll(winning);
}
}
if (nonWinning.isEmpty()) {
// System.out.println("Must give a winning piece");
return super.givePiece(board, pieces);
} else {
// System.out.println("Non winning piece");
return nonWinning.get(0);
}
}
@Override
public Board yourMove(Piece givenPiece, Board board, Piece[] piecesAvailable) {
Streak[] streaks = board.findStreaks();
for (Streak streak : streaks) {
if (streak.getLength() == 3
&& Piece.getSimilarities(givenPiece, new Piece(streak.getType())) != 0) {
// Place piece
// Find free places
int[] placeFree = new int[] {0, 1, 2, 3};
for (int i = 0; i < 4; i++) {
Piece p = null;
switch (streak.getOrientation()) {
case HORIZONTAL:
p = board.getPiece(streak.getNo(), i);
break;
case VERTICAL:
p = board.getPiece(i, streak.getNo());
break;
case DIAGONAL:
if (streak.getNo() == 0) {
p = board.getPiece(i, i);
} else {
p = board.getPiece(3 - i, i);
}
}
if (p != null) {
placeFree[i] = -1;
}
}
for (int place : placeFree) {
if (place >= 0) {
if (streak.getOrientation() == Streak.Orientation.HORIZONTAL) {
board.setPiece(streak.getNo(), place, givenPiece);
} else if (streak.getOrientation() == Streak.Orientation.VERTICAL) {
board.setPiece(place, streak.getNo(), givenPiece);
} else {
if (streak.getNo() == 0) {
board.setPiece(place, place, givenPiece);
} else {
board.setPiece(3 - place, place, givenPiece);
}
}
}
}
return board;
}
}
return super.yourMove(givenPiece, board, piecesAvailable);
}