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Sage v2.0.0 Release Notes

Release Date: 2016-07-17 // almost 8 years ago

  • ✨ Enhancements

    • 🐎 Performance greatly improved when performing operations with Board

    🆕 New Features

    • Most significant bit operations to Bitboard:

      • Properties: msb, msbIndex, msbSquare
      • Methods: popMSB(), popMSBIndex(), popMSBSquare()

    • Board initializer from arrays of piece characters

      Board(pieces: [["r", "n", "b", "q", "k", "b", "n", "r"],
               ["p", "p", "p", "p", "p", "p", "p", "p"],
               [" ", " ", " ", " ", " ", " ", " ", " "],
               [" ", " ", " ", " ", " ", " ", " ", " "],
               [" ", " ", " ", " ", " ", " ", " ", " "],
               [" ", " ", " ", " ", " ", " ", " ", " "],
               ["P", "P", "P", "P", "P", "P", "P", "P"],
               ["R", "N", "B", "Q", "K", "B", "N", "R"]])

    • 📜 Parsing PGN string data with PGN(parse:)

    • Exporting PGN string data with exported()

    • 🆕 New Player struct

    💥 Breaking Changes

    • Piece has been changed to a struct type with nested a Kind type

      • Values such as isKing and relativeValue now belong to Kind

    • The argument-less bitboard() method for Board has been changed to occupiedSpaces

    • Replaced Game.Mode with two Player instances for a game

    🛠 Fixes

    • 🚚 Calling redoMove() would sometimes cause a crash if the Game instance had no available moves (e.g. was over).

    • The Board playground view for iOS and tvOS was flipped vertically

    • canPromote(_:) for Piece didn't take king into account

    • ⏪ Castling rights weren't restored in undoMove()

    • 🚚 execute(move:) didn't check the promotion piece's kind