v1.7.1

Moving the chessmodels.perft() function from the tests to the main code; adding the go-chess-perft tool and the example for the chessmodels.MoveGenerator.MovesForColor() method; bug fixing.

Change Log

• new features:
  • transform the chessmodels.Board.CheckMove() method to an independent function;
  • the chessmodels.Perft() function:
    • move the chessmodels.perft() function from the tests to the main code;
    • pass a handler to all levels in the chessmodels.Perft() function;
    • pass a move generator to the chessmodels.Perft() function via an interface;
  • add the go-chess-perft tool;
• bug fixing:
  • fix rune conversion from an integer to a string in the uci.EncodePosition() function;
  • fix incorrect calculation of the last file in the uci.EncodePieceStorage() function;
• refactoring:
  • simplify the utility functions in the pieces package;
  • merge the chessmodels.pieceGroup type with the chessmodels.Board structure;
• unit testing:
  • complete the tests:
    • of the pieces.NewPiece() function;
    • of the uci.DecodePiece() function;
    • of the uci.EncodePiece() function;
  • add the long-playing tests to the Travis CI configuration;
• examples:
  • remove the examples:
    • remove the examples with a mock piece;
    • remove the redundant examples;
  • add the example for the chessmodels.MoveGenerator.MovesForColor() method.

Features

• representing the board as an associative array of pieces with their positions as keys;
• immutable applicating moves to the board via copying the latter;
• checkings of moves:
  • universal;
  • individual for all types of pieces;
• generating moves via filtering from all possible ones;
• perft function;
• using an abstraction of a piece;
• Forsyth–Edwards Notation:
  • parsing:
    • of a position;
    • of a move;
    • of a piece kind;
    • of a piece color;
    • of a board;
  • serialization:
    • of a position;
    • of a move;
    • of a piece kind;
    • of a piece color;
    • of a board;
• utilities:
  • utility for counting all possible moves (based on the perft function).