61 lines
1.9 KiB
Nim
61 lines
1.9 KiB
Nim
import board as chess
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import std/strformat
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import std/strutils
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when isMainModule:
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setControlCHook(proc () {.noconv.} = echo ""; quit(0))
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const fen = "rnbqkbnr/2p/8/8/8/8/P7/RNBQKBNR w KQkq - 0 1"
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var
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board = newChessboardFromFEN(fen)
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canCastle: tuple[queen, king: bool]
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data: string
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move: Move
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echo "\x1Bc"
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while true:
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canCastle = board.canCastle()
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echo &"{board.pretty()}"
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echo &"Turn: {board.getSideToMove()}"
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echo &"Moves: {board.getMoveCount()} full, {board.getHalfMoveCount()} half"
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echo &"Can castle:\n - King side: {(if canCastle.king: \"yes\" else: \"no\")}\n - Queen side: {(if canCastle.queen: \"yes\" else: \"no\")}"
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stdout.write(&"En passant target: ")
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if board.getEnPassantTarget() != emptyLocation():
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echo board.getEnPassantTarget().locationToAlgebraic()
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else:
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echo "None"
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stdout.write(&"Check: ")
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if board.inCheck():
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echo &"Yes"
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else:
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echo "No"
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stdout.write("\nMove(s) -> ")
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try:
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data = readLine(stdin).strip(chars={'\0', ' '})
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except IOError:
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echo ""
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break
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if data == "undo":
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echo &"\x1BcUndo: {board.undoLastMove()}"
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continue
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if data == "reset":
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echo &"\x1BcBoard reset"
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board = newChessboardFromFEN(fen)
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continue
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for moveChars in data.split(" "):
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if len(moveChars) != 4:
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echo "\x1BcError: invalid move"
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break
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try:
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move = board.makeMove(moveChars[0..1], moveChars[2..3])
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except ValueError:
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echo &"\x1BcError: {getCurrentExceptionMsg()}"
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if move == emptyMove():
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echo &"\x1BcError: move '{moveChars}' is illegal"
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break
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else:
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echo "\x1Bc"
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