48 Commits (c6ecdd4c8353b6184d5e2bbc28427128652d9c0a)

 

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Author	SHA1	Message	Date
TiynGER	c6ecdd4c83	tests: created tests dir ... The tests where cluttering the src dir so i moved them to a separate dir. Same goes for the binaries so i changed the outputdirectory for them and added these to the new gitignore file	4 years ago
TiynGER	2d021366cb	art: created art dir and moved pictures into it	4 years ago
marten	acb6a1ad77	readme: removed not working notice for engine	4 years ago
TiynGER	f6787eedd3	chess bugfix: castle and convertToFen ... Castling was bugged in the previous version. The pieces moved on the wrong squares due to W and E being set wrongly. convertToFen didnt record empty squares if located at the end of the fen string.	4 years ago
TiynGER	23a97ae9fe	chess bugfix: en passant square creation ... The en passant square is only important if it is target of an enemy pawn. If that is not the case it should not be set and shouldn't appear in the fen string either. Now it is checked if the en passant square is the target of an enemy pawn	4 years ago
TiynGER	5e796751d7	chess: repetition now uses less data ... Repetitions can only occur if the pieces and castling rights are exactly the same. For memory sake the sequence of last boards is now emptied if a capture occurs, a pawn moves, or if the castle rights change. That directly makes the saving of the castling rights obsolete.	4 years ago
TiynGER	a3c48fd50c	chess: chess to fen notation added ... Now there is a method to turn a chess object into a fen-string. Additionally the enPassant handling was changed. There can be only one enPassant field at a time. So a new attribute was added to the chess object that stores the field for the enPassant capture. If there is no enPassant field it will be set to -1.	4 years ago
TiynGER	d5ac25a642	readme: added move notation documentation	4 years ago
TiynGER	53e1cc8df3	bugfix chess: genPawnPromotion always gives back promotions ... The if statement was not tailored to the color and according back ranks. It didnt even check if the piece is a pawn. Now it does.	4 years ago
TiynGER	a383e52bd7	ches: added fen ... FEN is a notation to describe a state of a chess game. Added a initChess function, which is able to create a chess object from FEN	4 years ago
TiynGER	c195f2da6a	chess: refactoring genLegalMoves ... genLegalMoves procs where copy and pasted, now they are done by a common function. Some magic numbers have been removed.	4 years ago
TiynGER	ee7d5a0a9d	chess: refactoring genDests ... genDests procs where copy and pasted, now they are done by a common function. Single line functions where also removed, due to them being to trivial	4 years ago
TiynGER	087da7d3f1	bugfix chess: moveToNotation promotion part wrong ... The function moveToNotation added the promotion character even if a piece and not a pawn moves to the final rank.	4 years ago
TiynGER	4cac1ba6bf	merge conflict	4 years ago
TiynGER	3c97395ce8	refactoring: cleanup engine code and add alpha beta to readme	4 years ago
TiynGER	b7480a0cd4	engine: added piece-square tables ... Piece square tables are a way to encurage the engine to put pieces on active squares. Each piece got a corresponding table.	4 years ago
TiynGER	12ed9921f1	engine: added piece-square tables ... Piece square tables are a way to encurage the engine to put pieces on active squares. Each piece got a corresponding table.	4 years ago
TiynGER	b3c76fd2c1	visibility: use include in tests and only set needed functions as public	4 years ago
TiynGER	10098da82f	refactoring: renaming classes and functions ... Renamed the 'game' type to 'chess' to make more sense of the existing filestructure. Doubled functions where removed.	4 years ago
TiynGER	3bc523c37a	chess: fixed field indices ... Field indices where counting up from h to a, now they are counting up from a to h, so the board is not inverted anymore	4 years ago
TiynGER	9095cf8eee	engine: engine now correctly uses the negamax algorithm ... NegaMax is a simplified version of the MiniMax algorithm that doesn't need different subroutines for the different colors. The testcases were selected and extended. Evaluation now has values for draws and wins.	4 years ago
TiynGER	9ea20b6c1f	lichess: turned down difficulty and removed unnecessary echoes	4 years ago
TiynGER	5bee0f84d2	bugfix: threefold repitition throws nullpointer ... If the threefold repitition check is called before enough moves are saved in the previous board state it throws a nullpointer. A simple null check solves the problem	4 years ago
TiynGER	91281d97a7	lichess: added lichess integration ... Lichess is a free and open source platform to play chess. Connection is realized via the berserk python plugin that uses the lichess api.	4 years ago
TiynGER	7fb821254c	game: added single player ... Integrated the engine into the playable game. Created a menu to choose between single player and hotseat. Added a way to choose difficulty and color in single player.	4 years ago
TiynGER	4e69bd3977	engine: Readme update according to used algorithm	4 years ago
TiynGER	4ba3e06d93	engine: first push for engine ... I created an engine, that uses a basic version of the minimax algorithm to evaluate a position. It then evaluates all the possible next moves in a given position and picks the one that has the best evaluation. Basic test cases were also added.	4 years ago
TiynGER	0e27d0a6b5	chess: syntax and structure changes ... gameTest renamed to chessTest due to it testing chess.nim and not game.nim. always used += in chess.nim to increase readability.	4 years ago
TiynGER	0a0accb3d0	chess: Moved replaced with CastleRights ... Moved was a 10x12 1-d array, that stored bools. It was only used for checking if a pawn moved (especially important for the double move of the pawns) and if the other pieces moved (important for checking if the player can castle or not). The pawn moves are now checked by the starting position (pawns on the second rank cant be already moved). The castle rights of a game are expressed as CastleRights, a tuple with 4 bools. This saves basically 116 boolean values.	4 years ago
TiynGER	c91bf64047	chess restructuring: changed order of functions	4 years ago
TiynGER	0ceb567048	structure: made a src folder and moved all source file into it	4 years ago
TiynGER	6ad11fde2a	chess: updating documentation ... Documentation is now set for every method with complete parameters. Also all global variables and constants as well as types are documented.	4 years ago
TiynGER	9b68538b12	readme: specified plan for engine	4 years ago
TiynGER	c5cf2fd737	chess: refactoring setters and try ... Setters are not needed as all the assigning gets handled inside the file. All Setters were removed. The try-statements were used to excessively and were changed for manual checking	4 years ago
TiynGER	c4f7e3b98d	chess: improved documentation and deleted unused stuff	4 years ago
TiynGER	81d5d57e75	chess: refactoring getters ... Getters are not needed according to the official nim documentation. https://nim-lang.org/docs/manual.html#procedures-properties Getters were replaced accordingly	4 years ago
TiynGER	75e804ef6f	chess/game: claimable draw at 50-Move-Rule added	4 years ago
TiynGER	9ed8b886db	chess/game: claimable draw at 3-fold repitition added	4 years ago
TiynGER	7caa4db120	game bugfix: game isnt stopped after stalemate	4 years ago
TiynGER	8e918aebb7	chess: draw by insufficient material added	4 years ago
TiynGER	2b4598785d	readme: added logo	4 years ago
TiynGER	1cc88f6bf9	game bugfix: after castling toMove wasnt changed ... If you castle correctly the toMove attribute of the game object wasnt changed. This is now fixed.	4 years ago
TiynGER	67a3ab4579	readme/license: updated/added	4 years ago
TiynGER	97406d4da3	tests: added unittests ... Due to the official nim documentation the snake_case was now swapped for camelCase. Tests for nearly any move were added. A new procedure can initialize a game with a given 8x8 board with pieces and determines if they have been moved already.	4 years ago
TiynGER	f749f66c3c	chess: code reformatting	4 years ago
TiynGER	e30ff1f3ba	chess/game: base game completely implemented ... All moves including en-passant and castling are implemented. Game now features a proof of concept game. Some cleanup still needs to be done.	4 years ago
TiynGER	b30aa89dc0	base: chess now basically works ... The most important movements and even en passant and castling are implemented. A cli game is not done for now. An engine is the goal of the project, but will be focussed at the end of the basic development.	4 years ago
Marten	3747b1ae49	Initial commit	4 years ago