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fixed slight mistake

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This commit is contained in:
Karma Riuk 2025-02-03 16:12:20 +01:00
parent b70ca5302a
commit 310abb0611
2 changed files with 24 additions and 4 deletions
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26
cpp/src/board.cpp
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@ -281,11 +281,29 @@ std::vector<int8_t> to_target_square(std::vector<Move> moves) {
bool Board::is_check_for(int8_t colour) const {
int8_t king_idx = this->get_king_of(colour);
for (int i = 0; i < 64; i++) {
if (this->squares[i] == Piece::None)
if (this->squares[i] == Piece::None || colour_at(i) == colour)
continue;
std::vector<Move> moves =
legal_moves(this->squares[i], *this, Coords::from_index(i), true);
std::vector<int8_t> targets = to_target_square(moves);
std::vector<int8_t> targets;
if ((squares[i] & 0b00111) == King) {
// special case for the king, because it creates infinite recursion
// (since he looks if he's walking into a check)
Coords king_pos = Coords::from_index(i);
for (int dx = -1; dx <= 1; dx++) {
for (int dy = -1; dy <= 1; dy++) {
Coords c{king_pos.x + dx, king_pos.y + dy};
if (c.is_within_bounds())
targets.push_back(c.to_index());
}
}
} else {
std::vector<Move> moves = legal_moves(
this->squares[i],
*this,
Coords::from_index(i),
true
);
targets = to_target_square(moves);
}
if (std::find(targets.begin(), targets.end(), king_idx)
!= targets.end())
return true;

2
cpp/src/pieces/king.cpp
View File

@ -45,6 +45,8 @@ std::vector<Move> king_moves(const Board& b, const Coords xy) {
}
}
if (b.is_check_for(b.colour_at(xy)))
return keep_only_blocking(ret, b);
// -- Castles
int8_t castling_rights = b.colour_at(xy) == Colour::White