positionWeight method

int positionWeight(ChessPos pos)

位置权重

Implementation

int positionWeight(ChessPos pos) {
  String item = fen[pos.y][pos.x];
  List<String> points = movePoints(pos);
  int team = item.codeUnitAt(0) < ChessFen.colIndexBase ? 0 : 1;
  int weight = 0;
  for (var point in points) {
    ChessPos cPos = ChessPos.fromCode(point);
    String code = fen[cPos.y][cPos.x];
    if ((team == 0 && code == 'K') || (team == 1 && code == 'k')) {
    } else if (code != '0') {
      if (code == 'p') {
        if (cPos.y < 5) {
          code = 'p+';
          if (cPos.y < 3 && cPos.x > 2 && cPos.x < 7) {
            code = 'p++';
          }
        }
      } else if (code == 'P') {
        if (cPos.y > 4) {
          code = 'P+';
          if (cPos.y > 6 && cPos.x > 2 && cPos.x < 7) {
            code = 'P++';
          }
        }
      }
      weight += chessWeight[code.toLowerCase()]!;
    }
  }
  return weight;
}