C++ Position::Ep方法代码示例

本文整理汇总了C++中Position::Ep方法的典型用法代码示例。如果您正苦于以下问题：C++ Position::Ep方法的具体用法？C++ Position::Ep怎么用？C++ Position::Ep使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Position的用法示例。

在下文中一共展示了Position::Ep方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: Mirror

void Position::Mirror()
{
	Position old = *this;
	Clear();
	for (int f = 0; f < 64; f++)
	{
		PIECE p = old[f];
		if (p == NOPIECE) continue;
		Put(FLIP[f], p ^ 1);
		if (p == KW)
			m_Kings[BLACK] = FLIP[f];
		else if (p == KB)
			m_Kings[WHITE] = FLIP[f];
	}
	m_side = old.Side() ^ 1;
	m_fifty = old.Fifty();
	if (old.Ep() != NF) m_ep = FLIP[old.Ep()];
	m_ply = old.Ply();
	int bit0 = old.m_castlings & 0x01;
	int bit1 = (old.m_castlings & 0x02) >> 1;
	int bit2 = (old.m_castlings & 0x04) >> 2;
	int bit3 = (old.m_castlings & 0x08) >> 3;
	int bit4 = (old.m_castlings & 0x10) >> 4;
	int bit5 = (old.m_castlings & 0x20) >> 5;
	int bit6 = (old.m_castlings & 0x40) >> 6;
	int bit7 = (old.m_castlings & 0x80) >> 7;
	m_castlings = static_cast<U8>((bit5 << 7) | (bit4 << 6) | (bit7 << 5) | (bit6 << 4) | (bit1 << 3) | (bit0 << 2) | (bit3 << 1) | (bit2 << 0));
}

开发者ID:raimarHD，项目名称:lcec，代码行数:28，代码来源:position.cpp

示例2: GenCheckEvasions

void MoveList::GenCheckEvasions(const Position& pos)
{
  Clear();

  COLOR side = pos.Side();
  COLOR opp = side ^ 1;
  U64 freeOrOpp = ~pos.BitsAll(side);
  U64 occ = pos.BitsAll();

  U64 x, y;
  FLD from, to;
  PIECE piece, captured;
  FLD K = pos.King(side);

  U64 attackers = pos.GetAttacks(K, opp, occ);
  U64 mask = attackers;
  while (attackers)
  {
    from = PopLSB(attackers);
    mask |= BB_BETWEEN[from][K];
  }

  int fwd = -8 + 16 * side;
  int second = 6 - 5 * side;
  int seventh = 1 + 5 * side;

  piece = PW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    int row = Row(from);

    to = static_cast<FLD>(from + fwd);
    if (!pos[to])
    {
      if (row == second)
      {
        if (BB_SINGLE[to] & mask)
          Add(from, to, piece);
        
        to = static_cast<FLD>(to + fwd);
        if (!pos[to])
        {
          if (BB_SINGLE[to] & mask)
            Add(from, to, piece);
        }
      }
      else if (row == seventh)
      {
        if (BB_SINGLE[to] & mask)
        {
          Add(from, to, piece, NOPIECE, QW | side);
          Add(from, to, piece, NOPIECE, RW | side);
          Add(from, to, piece, NOPIECE, BW | side);
          Add(from, to, piece, NOPIECE, NW | side);
        }
      }
      else
      {
        if (BB_SINGLE[to] & mask)
          Add(from, to, piece);
      }
    }

    y = BB_PAWN_ATTACKS[from][side] & pos.BitsAll(opp) & mask;
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];

      if (row == seventh)
      {
        Add(from, to, piece, captured, QW | side);
        Add(from, to, piece, captured, RW | side);
        Add(from, to, piece, captured, BW | side);
        Add(from, to, piece, captured, NW | side);        
      }
      else
        Add(from, to, piece, captured);
    }
  }

  to = pos.Ep();
  if (to != NF)
  {
    y = BB_PAWN_ATTACKS[to][opp] & pos.Bits(PW | side);
    while (y)
    {
      from = PopLSB(y);
      Add(from, to, piece, PW | opp);
    }
  }

  piece = NW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    y = BB_KNIGHT_ATTACKS[from] & freeOrOpp & mask;
//.........这里部分代码省略.........

开发者ID:GordCaswell，项目名称:lucaschessportable，代码行数:101，代码来源:moves.cpp

示例3: GenCaptures

void MoveList::GenCaptures(const Position& pos, bool genChecks)
{
  Clear();

  COLOR side = pos.Side();
  COLOR opp = side ^ 1;
  U64 targets = pos.BitsAll(opp);
  U64 occ = pos.BitsAll();
  U64 free = ~occ;
  U64 checksN = 0, checksB = 0, checksR = 0, checksQ = 0;

  FLD Kopp = pos.King(opp);
  if (genChecks)
  {
    checksN = BB_KNIGHT_ATTACKS[Kopp] & free;
    checksB = BishopAttacks(Kopp, occ) & free;
    checksR = RookAttacks(Kopp, occ) & free;
    checksQ = checksB | checksR;
  }
  
  U64 x, y;
  FLD from, to;
  PIECE piece, captured;

  int fwd = -8 + 16 * side;
  int seventh = 1 + 5 * side;

  piece = PW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    int row = Row(from);

    to = static_cast<FLD>(from + fwd);
    if (!pos[to])
    {
      if (row == seventh)
      {
        Add(from, to, piece, NOPIECE, QW | side);
        Add(from, to, piece, NOPIECE, RW | side);
        Add(from, to, piece, NOPIECE, BW | side);
        Add(from, to, piece, NOPIECE, NW | side);
      }
    }

    y = BB_PAWN_ATTACKS[from][side] & pos.BitsAll(opp);
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];

      if (row == seventh)
      {
        Add(from, to, piece, captured, QW | side);
        Add(from, to, piece, captured, RW | side);
        Add(from, to, piece, captured, BW | side);
        Add(from, to, piece, captured, NW | side);        
      }
      else
        Add(from, to, piece, captured);
    }
  }

  to = pos.Ep();
  if (to != NF)
  {
    y = BB_PAWN_ATTACKS[to][opp] & pos.Bits(PW | side);
    while (y)
    {
      from = PopLSB(y);
      Add(from, to, piece, PW | opp);
    }
  }

  piece = NW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    y = BB_KNIGHT_ATTACKS[from] & (targets | checksN);
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];
      Add(from, to, piece, captured);
    }
  }

  piece = BW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    y = BishopAttacks(from, occ) & (targets | checksB);
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];
      Add(from, to, piece, captured);
//.........这里部分代码省略.........

开发者ID:GordCaswell，项目名称:lucaschessportable，代码行数:101，代码来源:moves.cpp

示例4: GenAllMoves

void MoveList::GenAllMoves(const Position& pos)
{
  Clear();

  COLOR side = pos.Side();
  COLOR opp = side ^ 1;
  U64 freeOrOpp = ~pos.BitsAll(side);
  U64 occ = pos.BitsAll();

  U64 x, y;
  FLD from, to;
  PIECE piece, captured;

  int fwd = -8 + 16 * side;
  int second = 6 - 5 * side;
  int seventh = 1 + 5 * side;

  piece = PW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    int row = Row(from);

    to = static_cast<FLD>(from + fwd);
    if (!pos[to])
    {
      if (row == second)
      {
        Add(from, to, piece);
        to = static_cast<FLD>(to + fwd);
        if (!pos[to])
          Add(from, to, piece);
      }
      else if (row == seventh)
      {
        Add(from, to, piece, NOPIECE, QW | side);
        Add(from, to, piece, NOPIECE, RW | side);
        Add(from, to, piece, NOPIECE, BW | side);
        Add(from, to, piece, NOPIECE, NW | side);
      }
      else
        Add(from, to, piece);
    }

    y = BB_PAWN_ATTACKS[from][side] & pos.BitsAll(opp);
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];

      if (row == seventh)
      {
        Add(from, to, piece, captured, QW | side);
        Add(from, to, piece, captured, RW | side);
        Add(from, to, piece, captured, BW | side);
        Add(from, to, piece, captured, NW | side);        
      }
      else
        Add(from, to, piece, captured);
    }
  }

  to = pos.Ep();
  if (to != NF)
  {
    y = BB_PAWN_ATTACKS[to][opp] & pos.Bits(PW | side);
    while (y)
    {
      from = PopLSB(y);
      Add(from, to, piece, PW | opp);
    }
  }

  piece = NW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    y = BB_KNIGHT_ATTACKS[from] & freeOrOpp;
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];
      Add(from, to, piece, captured);
    }
  }

  piece = BW | side;
  x = pos.Bits(piece);
  while (x)
  {
    from = PopLSB(x);
    y = BishopAttacks(from, occ) & freeOrOpp;
    while (y)
    {
      to = PopLSB(y);
      captured = pos[to];
      Add(from, to, piece, captured);
    }
//.........这里部分代码省略.........

开发者ID:GordCaswell，项目名称:lucaschessportable，代码行数:101，代码来源:moves.cpp

示例5: GenCheckEvasions

void MoveList::GenCheckEvasions(const Position& pos)
{
	Clear();

	COLOR side = pos.Side();
	COLOR opp = side ^ 1;
	U64 freeOrOpp = ~pos.BitsAll(side);
	U64 occ = pos.BitsAll();

	U64 x, y;
	FLD from, to;
	PIECE piece, captured;
	FLD K = pos.King(side);

	U64 attackers = pos.GetAttacks(K, opp, occ);
	U64 mask = attackers;
	while (attackers)
	{
		from = Bitboard::PopLSB(attackers);
		mask |= Bitboard::Between(from, K);
	}

	int fwd = -8 + 16 * side;
	int second = 6 - 5 * side;
	int seventh = 1 + 5 * side;

	piece = PW | side;
	x = pos.Bits(piece);
	while (x)
	{
		from = Bitboard::PopLSB(x);
		int row = Row(from);

		to = static_cast<FLD>(from + fwd);
		if (!pos[to])
		{
			if (row == second)
			{
				if (Bitboard::Single(to) & mask)
					Add(from, to, piece);

				to = static_cast<FLD>(to + fwd);
				if (!pos[to])
				{
					if (Bitboard::Single(to) & mask)
						Add(from, to, piece);
				}
			}
			else if (row == seventh)
			{
				if (Bitboard::Single(to) & mask)
				{
					Add(from, to, piece, NOPIECE, QW | side);
					Add(from, to, piece, NOPIECE, RW | side);
					Add(from, to, piece, NOPIECE, BW | side);
					Add(from, to, piece, NOPIECE, NW | side);
				}
			}
			else
			{
				if (Bitboard::Single(to) & mask)
					Add(from, to, piece);
			}
		}

		y = Bitboard::PawnAttacks(from, side) & pos.BitsAll(opp) & mask;
		while (y)
		{
			to = Bitboard::PopLSB(y);
			captured = pos[to];

			if (row == seventh)
			{
				Add(from, to, piece, captured, QW | side);
				Add(from, to, piece, captured, RW | side);
				Add(from, to, piece, captured, BW | side);
				Add(from, to, piece, captured, NW | side);
			}
			else
				Add(from, to, piece, captured);
		}
	}

	to = pos.Ep();
	if (to != NF)
	{
		y = Bitboard::PawnAttacks(to, opp) & pos.Bits(PW | side);
		while (y)
		{
			from = Bitboard::PopLSB(y);
			Add(from, to, piece, PW | opp);
		}
	}

	piece = NW | side;
	x = pos.Bits(piece);
	while (x)
	{
		from = Bitboard::PopLSB(x);
		y = Bitboard::KnightAttacks(from) & freeOrOpp & mask;
//.........这里部分代码省略.........

开发者ID:GordCaswell，项目名称:lucaschessportable，代码行数:101，代码来源:moves.cpp

注：本文中的Position::Ep方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。