tiyn
/
yeschess
mirror of https://github.com/tiyn/yeschess
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

visibility: use include in tests and only set needed functions as public

Browse Source
master
TiynGER 4 years ago
parent 10098da82f
commit b3c76fd2c1
5 changed files with 22 additions and 22 deletions
Show Stats Download Patch File Download Diff File

30
src/chess.nim
Unescape View File

@ -6,7 +6,7 @@ type
## `Color` describes the possible color of players.
Black = -1,
White = 1
Board* = array[0..119, int] ## \
Board = array[0..119, int] ## \
## `Board` saves the position of the chess pieces.
CastleRights = tuple
## `CastleRights` contains the rights to castling for each player.
@ -24,8 +24,8 @@ type
castleRights: CastleRights
Move* = object
## `Move` stores all important information for a move.
start*: int
dest*: int
start: int
dest: int
color: Color
prom: int
PieceAmount = tuple
@ -39,7 +39,7 @@ type
Pieces = array[10,int]
const
Block* = 999 ## \
Block = 999 ## \
## `Block` is the value assigned to empty blocked fields in a board.
WPawn* = 1
## `WPawn` is the value assigned to a square in a board with a white pawn.
@ -54,9 +54,9 @@ const
WQueen* = 5 ## \
## `WQueen` is the value assigned to a square in a board with a white
## queen.
WKing* = 6 ## \
WKing = 6 ## \
## `WKing` is the value assigned to a square in a board with a white king.
WEnPassant* = 7 ## \
WEnPassant = 7 ## \
## `WEnPassant` is assigned to a square in a board with an invisible white
## en passant pawn.
BPawn* = -WPawn ## \
@ -71,9 +71,9 @@ const
## `BRook` is the value assigned to a square in a board with a black rook.
BQueen* = -WQueen ## \
## `BQueen` is the value assigned to a square in a board with a black queen.
BKing* = -WKing ## \
BKing = -WKing ## \
## `BKing` is the value assigned to a square in a board with a black king.
BEnPassant* = -WEnPassant ## \
BEnPassant = -WEnPassant ## \
## `BEnPassant` is assigned to a square in a board with an invisible black
## en passant pawn.
N = 10 ## `N` describes a move a field up the board from whites perspective.
@ -142,7 +142,7 @@ let
# `FileChar` maps the files of the chessboard to numbers for better
# conversion.
proc fieldToInd*(field: string): int =
proc fieldToInd(field: string): int =
## Calculate and return board index from `field` of a chess board.
## Returns -1 if the `field` was not input correct.
try:
@ -152,7 +152,7 @@ proc fieldToInd*(field: string): int =
except IndexDefect, ValueError:
return -1
proc indToField*(ind: int): string =
proc indToField(ind: int): string =
## Calculate and returns field name from board index `ind`.
let line = (int)ind/10-1
let file_ind = 7-((ind)%%10-1)
@ -160,7 +160,7 @@ proc indToField*(ind: int): string =
if FileChar[file] == file_ind:
return $file & $line
proc getMove*(start: int, dest: int, prom: int, color: Color): Move =
proc getMove(start: int, dest: int, prom: int, color: Color): Move =
## Get a move object of the `color` player from `start` to `dest` with an
## eventual promition to `prom`.
var move = Move(start: start, dest: dest, prom: prom * ord(color), color: color)
@ -168,7 +168,7 @@ proc getMove*(start: int, dest: int, prom: int, color: Color): Move =
move.prom = WQueen
return move
proc getMove*(start: int, dest: int, color: Color): Move =
proc getMove(start: int, dest: int, color: Color): Move =
## Get a move object of the `color` player from `start` to `dest` with
## automatic promition to queen.
var move = Move(start: start, dest: dest, prom: WQueen * ord(color), color: color)
@ -259,7 +259,7 @@ proc initChess*(): Chess =
fiftyMoveCounter: 0, castleRights: (true, true, true, true))
return chess
proc initChess*(board: array[0..63, int], color: Color): Chess =
proc initChess(board: array[0..63, int], color: Color): Chess =
## Create and return a Chess object based on a position of choice.
## `board` describes the pieces, `color` the color that is about to move.
let board = initBoard(board)
@ -533,7 +533,7 @@ proc isAttacked(chess: Chess, position: int, color: Color): bool =
color), WKnight)
return attacked
proc isInCheck*(chess: Chess, color: Color): bool =
proc isInCheck(chess: Chess, color: Color): bool =
## Returns true if the king of a given `color` is in check in a `chess`.
var king_pos: int
for i in countup(0, chess.board.high):
@ -663,7 +663,7 @@ proc genLegalKingMoves(chess: Chess, field: int, color: Color): seq[Move] =
res.add(getMove(field, dest, color))
return res
proc genLegalMoves*(chess: Chess, field: int, color: Color): seq[Move] =
proc genLegalMoves(chess: Chess, field: int, color: Color): seq[Move] =
## Generates all legal moves in a `chess` starting from `field` for a `color`.
var legal_moves = newSeq[Move]()
var target = ord(color) * chess.board[field]

2
src/chessTest.nim
Unescape View File

@ -1,7 +1,7 @@
import einheit
import algorithm
import ./chess.nim
include ./chess.nim
testSuite ChessTest of TestSuite:

6
src/engine.nim
Unescape View File

@ -17,7 +17,7 @@ const
DrawVal = 0 ## `DrawVal` is the engines value for a draw.
LoVal = -1000000 ## `LoVal` is a value always lower than any evaluation.
proc pieceEval*(chess: Chess): int =
proc pieceEval(chess: Chess): int =
## Returns the evaluation of existing pieces on the `board`
var evaluation = DrawVal
for square in chess.board:
@ -63,7 +63,7 @@ proc evaluate(chess: Chess): int =
evaluation = min(DrawVal, evaluation)
return evaluation
proc spanMoveTree*(chess: Chess, depth: int): MoveTree =
proc spanMoveTree(chess: Chess, depth: int): MoveTree =
## Create and return a Movetree of a given `chess` with a given maximum `depth`.
var mTree: MoveTree
mTree.chess = chess
@ -75,7 +75,7 @@ proc spanMoveTree*(chess: Chess, depth: int): MoveTree =
mTree.children.add(spanMoveTree(tmpChess, depth-1))
return mTree
proc negaMax*(mTree: MoveTree): int =
proc negaMax(mTree: MoveTree): int =
## Return the value of the root node of a given `MoveTree`
if mTree.children == []:
return mTree.chess.evaluate()

4
src/engineTest.nim
Unescape View File

@ -1,7 +1,7 @@
import einheit
import ./chess.nim
import ./engine.nim
include ./chess.nim
include ./engine.nim
testSuite ChessTest of TestSuite:

2
src/game.nim
Unescape View File

@ -15,7 +15,7 @@ proc runGameHotseat*(): void =
while not chess.checkedMove(notationToMove(move, chess.toMove)):
move = readLine(stdin)
chess.echoBoard(chess.toMove)
if (chess.isDrawClaimable):
if (chess.isDrawClaimable()):
echo "Do you want to claim a draw? (y/N)"
draw = readLine(stdin)
if (draw == "y"):

Write Preview
Loading…
Cancel
Save