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Replace Position::copy()

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With assignment operator. And fix Position::flip().

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-04-06 19:13:48 +01:00
parent c2fc80e5d1
commit 676b2c8435
4 changed files with 16 additions and 30 deletions
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32
src/position.cpp
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@@ -92,16 +92,15 @@ CheckInfo::CheckInfo(const Position& pos) {
}
/// Position::copy() creates a copy of 'pos'. We want the new born Position
/// Position::operator=() creates a copy of 'pos'. We want the new born Position
/// object do not depend on any external data so we detach state pointer from
/// the source one.
void Position::copy(const Position& pos, Thread* th) {
void Position::operator=(const Position& pos) {
memcpy(this, &pos, sizeof(Position));
startState = *st;
st = &startState;
thisThread = th;
nodes = 0;
assert(pos_is_ok());
@@ -331,7 +330,7 @@ void Position::print(Move move) const {
if (move)
{
Position p(*this, thisThread);
Position p(*this);
cout << "\nMove is: " << (sideToMove == BLACK ? ".." : "") << move_to_san(p, move);
}
@@ -1540,21 +1539,20 @@ void Position::init() {
void Position::flip() {
// Make a copy of current position before to start changing
const Position pos(*this, thisThread);
const Position pos(*this);
clear();
thisThread = pos.this_thread();
// Board
sideToMove = ~pos.side_to_move();
thisThread = pos.this_thread();
nodes = pos.nodes_searched();
chess960 = pos.is_chess960();
startPosPly = pos.startpos_ply_counter();
for (Square s = SQ_A1; s <= SQ_H8; s++)
if (!pos.square_empty(s))
put_piece(Piece(pos.piece_on(s) ^ 8), ~s);
// Side to move
sideToMove = ~pos.side_to_move();
// Castling rights
if (pos.can_castle(WHITE_OO))
set_castle_right(BLACK, ~pos.castle_rook_square(WHITE_OO));
if (pos.can_castle(WHITE_OOO))
@@ -1564,22 +1562,14 @@ void Position::flip() {
if (pos.can_castle(BLACK_OOO))
set_castle_right(WHITE, ~pos.castle_rook_square(BLACK_OOO));
// En passant square
if (pos.st->epSquare != SQ_NONE)
st->epSquare = ~pos.st->epSquare;
// Checkers
st->checkersBB = attackers_to(king_square(sideToMove)) & pieces(~sideToMove);
// Hash keys
st->key = compute_key();
st->pawnKey = compute_pawn_key();
st->materialKey = compute_material_key();
// Incremental scores
st->psqScore = compute_psq_score();
// Material
st->checkersBB = attackers_to(king_square(sideToMove)) & pieces(~sideToMove);
st->npMaterial[WHITE] = compute_non_pawn_material(WHITE);
st->npMaterial[BLACK] = compute_non_pawn_material(BLACK);