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implemented en passant in legal moves

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Karma Riuk 2025-02-02 23:13:37 +01:00
parent 84c3af2bb1
commit 4c8fdfa3b4
1 changed files with 13 additions and 0 deletions
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13
cpp/src/pieces/pawn.cpp
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@ -29,6 +29,19 @@ std::vector<Move> pawn_moves(const Board& b, const Coords xy) {
} }
} }
// -- Capture en passant
if (b.en_passant_target != -1) {
Coords c = Coords::from_index(b.en_passant_target);
int dy = my_colour == Colour::White ? -1 : 1;
if (c.y == xy.y + dy && (c.x == xy.x - 1 || c.x == xy.x + 1))
ret.push_back(Move{
xy.to_index(),
c.to_index(),
.is_capturing = true,
.en_passant = true
});
}
// -- Promotion // -- Promotion
bool is_on_starting_rank = bool is_on_starting_rank =
my_colour == Colour::White ? xy.y == 1 : xy.y == 6; my_colour == Colour::White ? xy.y == 1 : xy.y == 6;