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Fix castling check when converting move to SAN

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This commit is contained in:
Alex Clink 2021-09-25 00:24:55 -04:00
parent a66bf70a65
commit eafa4e0fbb
1 changed files with 16 additions and 3 deletions
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19
src/lx_chess/game.cr
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@ -153,7 +153,20 @@ module LxChess
end
checkmate = check ? tmp_move(from, to) { checkmate?(next_turn(turn)) } : false
castling = piece.king? ? to - from : nil
castles_k = false
castles_q = false
if piece.king?
dist = (to - from)
if dist.abs == 2
if dist.positive?
castles_k = true
else
castles_q = true
end
end
end
Notation.new(
square: @board.cord(to),
@ -165,8 +178,8 @@ module LxChess
en_passant: en_passant,
check: check && !checkmate,
checkmate: checkmate,
castles_k: castling && castling.positive? || false,
castles_q: castling && castling.negative? || false
castles_k: castles_k,
castles_q: castles_q
)
end