getBeEatenList method

List<ChessItem> getBeEatenList(
  1. int team
)

获取要被吃的子，无根，或者吃子者权重低， 不含老将

Implementation

List<ChessItem> getBeEatenList(int team) {
  List<ChessItem> items = [];
  List<ChessItem> pieces = fen.getAll();
  int eTeam = team == 0 ? 1 : 0;
  for (var item in pieces) {
    if (item.team == team && !['K', 'k'].contains(item.code)) {
      int rc = rootCount(item.position, team);
      int erc = rootCount(item.position, eTeam);
      if (rc == 0 && erc > 0) {
        items.add(item);
      } else {
        List<ChessItem> canEatMe = getBeEatList(item.position);
        for (ChessItem eItem in canEatMe) {
          if (chessWeight[eItem.code.toLowerCase()]! <
              chessWeight[item.code.toLowerCase()]!) {
            items.add(item);
            break;
          }
        }
      }
    }
  }
  items.sort(
    (a, b) => chessWeight[b.code.toLowerCase()]!
        .compareTo(chessWeight[a.code.toLowerCase()]!),
  );
  return items;
}