/// <summary>
/// KIF/KI2形式の指し手を与えて、Moveに変換する。指し手の合法性のチェックはここでは行わない。
/// 変換に失敗したときはMove.NONEが返る。
/// </summary>
/// <param name="pos"></param>
/// <param name="kifMove"></param>
/// <returns></returns>
public static Move FromKif(this Position pos, string kifMove)
{
// match.Group[1]: ([▲△▼▽☗☖⛊⛉]?)
// match.Group[2]: ([1-9１２３４５６７８９一二三四五六七八九]{2}同?)
// match.Group[3]: (同)
// match.Group[4]: ([歩香桂銀金角飛玉王と杏圭全馬竜龍]|成[香桂銀])
// match.Group[5]: ([右左]?[上寄引]?|直)
// match.Group[6]: (成|不成|打)?
// match.Group[7]: (\([1-9]{2}\))?
Match match = new Regex(@"([▲△▼▽☗☖⛊⛉]?)(?:([1-9１２３４５６７８９一二三四五六七八九]{2}同?)|(同))[ ]*([歩香桂銀金角飛玉王と杏圭全馬竜龍]|成[香桂銀])(直|[右左]?[上寄引]?)(成|不成|打)?(\([1-9]{2}\))?").Match(kifMove);
if (!match.Success)
{
return(Move.NONE);
}
Color c0 = pos.sideToMove;
Color c1 = FromColor(match.Groups[1].Value);
Square sq0;
Square sq1 = match.Groups[3].Value == "同" ? pos.State().lastMove.To() : FromSquare(match.Groups[2].Value);
if (sq1 == Square.NB)
{
return(Move.NONE);
}
Piece pt1 = FromKifPieceType(match.Groups[4].Value);
// 駒打ち
if (match.Groups[6].Value == "打")
{
return(Util.MakeMoveDrop(pt1, sq1));
}
// 成チェック
bool isPromote = (match.Groups[6].Value == "成");
// KIF形式で元座標が示されている場合
if (match.Groups[7].Value.Length == 4)
{
sq0 = FromSquare(match.Groups[7].Value.Substring(1, 2));
return(isPromote ? Util.MakeMovePromote(sq0, sq1) : Util.MakeMove(sq0, sq1));
}
// KI2棋譜用処理
// 駒の移動範囲を調べるため、着手前の駒を求める
Piece pt0 = isPromote ? pt1.RawPieceType() : pt1;
Bitboard sameBB = pos.AttackersTo(c0, sq1) & pos.Pieces(c0, pt0);
if (sameBB.IsZero())
{
return(Move.NONE);
}
if (sameBB.IsOne())
{
sq0 = sameBB.Pop();
return(isPromote ? Util.MakeMovePromote(sq0, sq1) : Util.MakeMove(sq0, sq1));
}
Bitboard bb;
switch (match.Groups[5].Value)
{
case "右":
sq0 = rightMost(c0, sameBB);
break;
case "左":
sq0 = leftMost(c0, sameBB);
break;
case "直":
bb = (KifUtil.lineDirBB(c0, sq1, Direct.D) & sameBB);
if (!bb.IsOne())
{
return(Move.NONE);
}
sq0 = bb.Pop();
break;
case "上":
bb = (KifUtil.dirBB(c0, sq1, Direct.D) & sameBB);
if (!bb.IsOne())
{
return(Move.NONE);
}
sq0 = bb.Pop();
break;
case "引":
bb = (KifUtil.dirBB(c0, sq1, Direct.U) & sameBB);
if (!bb.IsOne())
{
return(Move.NONE);
}
sq0 = bb.Pop();
break;
case "寄":
bb = (Bitboard.RankBB(sq1.ToRank()) & sameBB);
if (!bb.IsOne())
{
return(Move.NONE);
}
sq0 = bb.Pop();
break;
case "右上":
bb = (KifUtil.dirBB(c0, sq1, Direct.D) & sameBB);
sq0 = rightMost(c0, bb);
break;
case "左上":
bb = (KifUtil.dirBB(c0, sq1, Direct.D) & sameBB);
sq0 = leftMost(c0, bb);
break;
case "右引":
bb = (KifUtil.dirBB(c0, sq1, Direct.U) & sameBB);
sq0 = rightMost(c0, bb);
break;
case "左引":
bb = (KifUtil.dirBB(c0, sq1, Direct.U) & sameBB);
sq0 = leftMost(c0, bb);
break;
case "右寄":
bb = (Bitboard.RankBB(sq1.ToRank()) & sameBB);
sq0 = rightMost(c0, bb);
break;
case "左寄":
bb = (Bitboard.RankBB(sq1.ToRank()) & sameBB);
sq0 = leftMost(c0, bb);
break;
default: return(Move.NONE);
}
if (sq0 == Square.NB)
{
return(Move.NONE);
}
return(isPromote ? Util.MakeMovePromote(sq0, sq1) : Util.MakeMove(sq0, sq1));
}
static string fromSqFormat_KI2(Position pos, Move move)
{
Color c = pos.sideToMove;
Square fromSq = move.From(), toSq = move.To();
Piece p = pos.PieceOn(fromSq), pt = p.PieceType();
Bitboard sameBB = pos.AttackersTo(c, toSq) & pos.Pieces(c, pt);
if (!sameBB.IsSet(fromSq))
{
return("");
}
if (sameBB.IsOne())
{
return("");
}
if (KifUtil.checkBB(sameBB, Bitboard.RankBB(toSq.ToRank()), fromSq))
{
return("寄");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirBB(c, toSq, Direct.D), fromSq))
{
return("上");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirBB(c, toSq, Direct.U), fromSq))
{
return("引");
}
if (KifUtil.checkBB(sameBB, KifUtil.lineDirBB(c, toSq, Direct.D), fromSq) && (
pt == Piece.SILVER || pt == Piece.GOLD ||
pt == Piece.PRO_PAWN || pt == Piece.PRO_LANCE || pt == Piece.PRO_KNIGHT || pt == Piece.PRO_SILVER
))
{
return("直");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirOrBB(c, fromSq, Direct.L), fromSq))
{
return("左");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirOrBB(c, fromSq, Direct.R), fromSq))
{
return("右");
}
if (KifUtil.checkBB(sameBB, KifUtil.lineDirOrBB(c, fromSq, Direct.L) & Bitboard.RankBB(toSq.ToRank()), fromSq))
{
return("左寄");
}
if (KifUtil.checkBB(sameBB, KifUtil.lineDirOrBB(c, fromSq, Direct.R) & Bitboard.RankBB(toSq.ToRank()), fromSq))
{
return("右寄");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirBB(c, toSq, Direct.D) & KifUtil.dirOrBB(c, fromSq, Direct.L), fromSq))
{
return("左上");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirBB(c, toSq, Direct.D) & KifUtil.dirOrBB(c, fromSq, Direct.R), fromSq))
{
return("右上");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirBB(c, toSq, Direct.U) & KifUtil.dirOrBB(c, fromSq, Direct.L), fromSq))
{
return("左引");
}
if (KifUtil.checkBB(sameBB, KifUtil.dirBB(c, toSq, Direct.U) & KifUtil.dirOrBB(c, fromSq, Direct.R), fromSq))
{
return("右引");
}
// 正常な局面・指し手でここに到達する筈は無い
return("");
}