示例#1
0
 private void removeAnyCapturedPieces(Move move, CheckersBoard nextState) {
   int takenPieceXCoord = (move.getFrom().getXCoord() + move.getTo().getXCoord()) / 2;
   int takenPieceYCoord = (move.getFrom().getYCoord() + move.getTo().getYCoord()) / 2;
   Position takenPosition = new Position(takenPieceXCoord, takenPieceYCoord);
   if (!move.getFrom().equals(takenPosition)
       && !move.getTo()
           .equals(
               takenPosition)) { // neither the from or the 2 are the calculated middle position
     // then it has moved more then one place. Thus we must be
     // capturing a piece
     for (Piece<CheckersPieceDescription> removedPiece :
         nextState.getPiecesAtPlacement(takenPosition)) {
       nextState.removePiece(
           removedPiece); // no need to check whether this is an opponents piece as this move will
       // become invalidated in the game service.
     }
   }
 }
示例#2
0
  public CheckersBoard playMove(Iterable<Move> moves) throws GameFinishedException {
    CheckersBoard board = gameService.getCurrentState();
    CheckersBoard nextState = new CheckersBoard(boardIdService.nextId(), board);
    Iterable<Move> reverseStack = Lists.reverse(Lists.newArrayList(moves));
    for (Move move : reverseStack) {

      Piece<CheckersPieceDescription> piece = getPieceAtPossition(move.getFrom(), nextState);

      if (!board.isValidBoardPosition(move.getTo())) {
        throw new IllegalArgumentException(
            "The move to: " + move.getTo() + " is not within the confines of the board");
      }

      nextState.removePiece(piece);

      CheckersPieceDescription pieceToPlace =
          upgradePieceIfRequired(piece.getPiece(), move.getTo(), nextState);
      Piece<CheckersPieceDescription> nextPiece =
          new Piece<CheckersPieceDescription>(move.getTo(), pieceToPlace);
      nextState.addPiece(nextPiece);
      // create new state from current state

      // remove any opponents that might have been captured with this move

      removeAnyCapturedPieces(move, nextState);
    }

    gameService.playNextMove(nextState);

    return gameService.getCurrentState();
  }